第二章、天天生鲜注册功能基本实现
第二章 天天生鲜项目实现基本功能
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本项目关键词：天天生鲜注册实现源码
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天天生鲜项目学习视频
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本内容持续更新直至天天生鲜项目完成！
本文主要内容：实现注册基本逻辑
本设计不涉及中间过程，直接上手最后的功能，所以自己对着视频分模块学习，把这个整个模块学习完再导入下面的代码
本文中用到的Django的一些说明书
类试图使用手册
章节目录
第一章、天天生鲜项目框架搭建
第二章、天天生鲜注册功能实现
第一步
首先将static文件夹下面的register.html复制到templates中，由于CSS文件以及js文件与其不在同一路径，我们需要将头文件做如下改变
# 将头部文件做如下改变 PS:这个注释最好不要复制进去
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
"http://www.w3.org/1999/xhtml" xml:lang="en">
{% load static %}
-equiv="Content-Type" content="text/html;charset=UTF-8">
天天生鲜<span class="token operator">-</span>注册<<span class="token operator">/</span>title>
<link rel=<span class="token string">"stylesheet"</span> <span class="token function">type</span>=<span class="token string">"text/css"</span> href=<span class="token string">"{% static 'css/reset.css' %}"</span>>
<link rel=<span class="token string">"stylesheet"</span> <span class="token function">type</span>=<span class="token string">"text/css"</span> href=<span class="token string">"{% static 'css/main.css' %}"</span>>
<script <span class="token function">type</span>=<span class="token string">"text/javascript"</span> src=<span class="token string">"{% static js/jquery-1.12.4.min.js %}"</span>><<span class="token operator">/</span>script>
<script <span class="token function">type</span>=<span class="token string">"text/javascript"</span> src=<span class="token string">"{% static 'js/register.js' %}"</span>><<span class="token operator">/</span>script>
<<span class="token operator">/</span>head>
</code></pre>
<p>另外，如果前端代码中，存在图片连接，由于图片存放在static中，因此图片也需要做如下改变，只要是图片连接都要做这种改变</p>
<pre><code class="prism language-powershell"><a <span class="token keyword">class</span>=<span class="token string">"reg_logo"</span>><img src=<span class="token string">"{% static 'images/logo02.png' %}"</span>><<span class="token operator">/</span>a>
</code></pre>
<p>最后我们的前端页面register.html中的是这样的，当然中间还存在很多改变，自己看视频，防止敲错，直接复制即可</p>
<pre><code class="prism language-html"><span class="token doctype"><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"></span>
<span class="token tag"><span class="token tag"><span class="token punctuation"><</span>html</span> <span class="token attr-name">xmlns</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>http://www.w3.org/1999/xhtml<span class="token punctuation">"</span></span> <span class="token attr-name"><span class="token namespace">xml:</span>lang</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>en<span class="token punctuation">"</span></span><span class="token punctuation">></span></span>
{% load static %}
<span class="token tag"><span class="token tag"><span class="token punctuation"><</span>head</span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation"><</span>meta</span> <span class="token attr-name">http-equiv</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>Content-Type<span class="token punctuation">"</span></span> <span class="token attr-name">content</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>text/html;charset=UTF-8<span class="token punctuation">"</span></span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation"><</span>title</span><span class="token punctuation">></span></span>天天生鲜-注册<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>title</span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation"><</span>link</span> <span class="token attr-name">rel</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>stylesheet<span class="token punctuation">"</span></span> <span class="token attr-name">type</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>text/css<span class="token punctuation">"</span></span> <span class="token attr-name">href</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>{% static <span class="token punctuation">'</span>css/reset.css<span class="token punctuation">'</span> %}<span class="token punctuation">"</span></span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation"><</span>link</span> <span class="token attr-name">rel</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>stylesheet<span class="token punctuation">"</span></span> <span class="token attr-name">type</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>text/css<span class="token punctuation">"</span></span> <span class="token attr-name">href</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>{% static <span class="token punctuation">'</span>css/main.css<span class="token punctuation">'</span> %}<span class="token punctuation">"</span></span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation"><</span>script</span> <span class="token attr-name">type</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>text/javascript<span class="token punctuation">"</span></span> <span class="token attr-name">src</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>{% static <span class="token punctuation">'</span>js/jquery-1.12.4.min.js<span class="token punctuation">'</span> %}<span class="token punctuation">"</span></span><span class="token punctuation">></span></span><span class="token script language-javascript"></span><span class="token tag"><span class="token tag"><span class="token punctuation"></</span>script</span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation"><</span>script</span> <span class="token attr-name">type</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>text/javascript<span class="token punctuation">"</span></span> <span class="token attr-name">src</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>{% static <span class="token punctuation">'</span>js/register.js<span class="token punctuation">'</span> %}<span class="token punctuation">"</span></span><span class="token punctuation">></span></span><span class="token script language-javascript"></span><span class="token tag"><span class="token tag"><span class="token punctuation"></</span>script</span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>head</span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation"><</span>body</span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation"><</span>div</span> <span class="token attr-name">class</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>register_con<span class="token punctuation">"</span></span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation"><</span>div</span> <span class="token attr-name">class</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>l_con fl<span class="token punctuation">"</span></span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation"><</span>a</span> <span class="token attr-name">class</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>reg_logo<span class="token punctuation">"</span></span><span class="token punctuation">></span></span><span class="token tag"><span class="token tag"><span class="token punctuation"><</span>a</span> <span class="token attr-name">class</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>reg_logo<span class="token punctuation">"</span></span><span class="token punctuation">></span></span><span class="token tag"><span class="token tag"><span class="token punctuation"><</span>img</span> <span class="token attr-name">src</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>{% static <span class="token punctuation">'</span>images/logo02.png<span class="token punctuation">'</span> %}<span class="token punctuation">"</span></span><span class="token punctuation">></span></span><span class="token tag"><span class="token tag"><span class="token punctuation"></</span>a</span><span class="token punctuation">></span></span><span class="token tag"><span class="token tag"><span class="token punctuation"></</span>a</span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation"><</span>div</span> <span class="token attr-name">class</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>reg_slogan<span class="token punctuation">"</span></span><span class="token punctuation">></span></span>足不出户 · 新鲜每一天<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>div</span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation"><</span>div</span> <span class="token attr-name">class</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>reg_banner<span class="token punctuation">"</span></span><span class="token punctuation">></span></span><span class="token tag"><span class="token tag"><span class="token punctuation"></</span>div</span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>div</span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation"><</span>div</span> <span class="token attr-name">class</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>r_con fr<span class="token punctuation">"</span></span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation"><</span>div</span> <span class="token attr-name">class</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>reg_title clearfix<span class="token punctuation">"</span></span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation"><</span>h1</span><span class="token punctuation">></span></span>用户注册<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>h1</span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation"><</span>a</span> <span class="token attr-name">href</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>#<span class="token punctuation">"</span></span><span class="token punctuation">></span></span>登录<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>a</span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>div</span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation"><</span>div</span> <span class="token attr-name">class</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>reg_form clearfix<span class="token punctuation">"</span></span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation"><</span>form</span> <span class="token attr-name">method</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>post<span class="token punctuation">"</span></span> <span class="token attr-name">action</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>/user/register<span class="token punctuation">"</span></span><span class="token punctuation">></span></span>
{% csrf_token %}
<span class="token tag"><span class="token tag"><span class="token punctuation"><</span>ul</span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation"><</span>li</span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation"><</span>label</span><span class="token punctuation">></span></span>用户名:<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>label</span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation"><</span>input</span> <span class="token attr-name">type</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>text<span class="token punctuation">"</span></span> <span class="token attr-name">name</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>user_name<span class="token punctuation">"</span></span> <span class="token attr-name">id</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>user_name<span class="token punctuation">"</span></span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation"><</span>span</span> <span class="token attr-name">class</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>error_tip<span class="token punctuation">"</span></span><span class="token punctuation">></span></span>提示信息<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>span</span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>li</span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation"><</span>li</span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation"><</span>label</span><span class="token punctuation">></span></span>密码:<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>label</span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation"><</span>input</span> <span class="token attr-name">type</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>password<span class="token punctuation">"</span></span> <span class="token attr-name">name</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>pwd<span class="token punctuation">"</span></span> <span class="token attr-name">id</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>pwd<span class="token punctuation">"</span></span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation"><</span>span</span> <span class="token attr-name">class</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>error_tip<span class="token punctuation">"</span></span><span class="token punctuation">></span></span>提示信息<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>span</span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>li</span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation"><</span>li</span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation"><</span>label</span><span class="token punctuation">></span></span>确认密码:<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>label</span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation"><</span>input</span> <span class="token attr-name">type</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>password<span class="token punctuation">"</span></span> <span class="token attr-name">name</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>cpwd<span class="token punctuation">"</span></span> <span class="token attr-name">id</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>cpwd<span class="token punctuation">"</span></span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation"><</span>span</span> <span class="token attr-name">class</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>error_tip<span class="token punctuation">"</span></span><span class="token punctuation">></span></span>提示信息<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>span</span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>li</span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation"><</span>li</span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation"><</span>label</span><span class="token punctuation">></span></span>邮箱:<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>label</span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation"><</span>input</span> <span class="token attr-name">type</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>text<span class="token punctuation">"</span></span> <span class="token attr-name">name</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>email<span class="token punctuation">"</span></span> <span class="token attr-name">id</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>email<span class="token punctuation">"</span></span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation"><</span>span</span> <span class="token attr-name">class</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>error_tip<span class="token punctuation">"</span></span><span class="token punctuation">></span></span>提示信息<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>span</span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>li</span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation"><</span>li</span> <span class="token attr-name">class</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>agreement<span class="token punctuation">"</span></span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation"><</span>input</span> <span class="token attr-name">type</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>checkbox<span class="token punctuation">"</span></span> <span class="token attr-name">name</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>allow<span class="token punctuation">"</span></span> <span class="token attr-name">id</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>allow<span class="token punctuation">"</span></span> <span class="token attr-name">checked</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>checked<span class="token punctuation">"</span></span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation"><</span>label</span><span class="token punctuation">></span></span>同意”天天生鲜用户使用协议“<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>label</span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation"><</span>span</span> <span class="token attr-name">class</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>error_tip2<span class="token punctuation">"</span></span><span class="token punctuation">></span></span>提示信息<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>span</span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>li</span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation"><</span>li</span> <span class="token attr-name">class</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>reg_sub<span class="token punctuation">"</span></span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation"><</span>input</span> <span class="token attr-name">type</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>submit<span class="token punctuation">"</span></span> <span class="token attr-name">value</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>注 册<span class="token punctuation">"</span></span> <span class="token attr-name">name</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span><span class="token punctuation">"</span></span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>li</span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>ul</span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>form</span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>div</span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>div</span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>div</span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation"><</span>div</span> <span class="token attr-name">class</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>footer no-mp<span class="token punctuation">"</span></span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation"><</span>div</span> <span class="token attr-name">class</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>foot_link<span class="token punctuation">"</span></span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation"><</span>a</span> <span class="token attr-name">href</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>#<span class="token punctuation">"</span></span><span class="token punctuation">></span></span>关于我们<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>a</span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation"><</span>span</span><span class="token punctuation">></span></span>|<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>span</span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation"><</span>a</span> <span class="token attr-name">href</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>#<span class="token punctuation">"</span></span><span class="token punctuation">></span></span>联系我们<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>a</span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation"><</span>span</span><span class="token punctuation">></span></span>|<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>span</span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation"><</span>a</span> <span class="token attr-name">href</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>#<span class="token punctuation">"</span></span><span class="token punctuation">></span></span>招聘人才<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>a</span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation"><</span>span</span><span class="token punctuation">></span></span>|<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>span</span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation"><</span>a</span> <span class="token attr-name">href</span><span class="token attr-value"><span class="token punctuation">=</span><span class="token punctuation">"</span>#<span class="token punctuation">"</span></span><span class="token punctuation">></span></span>友情链接<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>a</span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>div</span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation"><</span>p</span><span class="token punctuation">></span></span>CopyRight © 2016 北京天天生鲜信息技术有限公司 All Rights Reserved<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>p</span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation"><</span>p</span><span class="token punctuation">></span></span>电话：010-****888 京ICP备*******8号<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>p</span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>div</span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>body</span><span class="token punctuation">></span></span>
<span class="token tag"><span class="token tag"><span class="token punctuation"></</span>html</span><span class="token punctuation">></span></span>
</code></pre>
<p>然后再user/views.py中添加如下代码</p>
<pre><code class="prism language-powershell"><span class="token keyword">from</span> django<span class="token punctuation">.</span>shortcuts import render<span class="token punctuation">,</span>redirect
<span class="token keyword">from</span> django<span class="token punctuation">.</span>urls import reverse <span class="token comment">#反向解析函数</span>
<span class="token keyword">from</span> django<span class="token punctuation">.</span>core<span class="token punctuation">.</span>mail import send_mail <span class="token comment">#导入发送邮件函数</span>
<span class="token keyword">from</span> django<span class="token punctuation">.</span>views<span class="token punctuation">.</span>generic import View <span class="token comment">#导入类视图</span>
<span class="token keyword">from</span> django<span class="token punctuation">.</span>http import HttpResponse
<span class="token keyword">from</span> django<span class="token punctuation">.</span>conf import settings
<span class="token keyword">from</span> user<span class="token punctuation">.</span>models import User
<span class="token keyword">from</span> itsdangerous import TimedJSONWebSignatureSerializer as Serializer <span class="token comment">#导入用于用户信息加密的插件并且给它取个别名为Serializer</span>
<span class="token keyword">from</span> itsdangerous import SignatureExpired <span class="token comment">#导入异常</span>
import re <span class="token comment">#导入正则匹配模块用于检验邮箱</span>
<span class="token comment"># Create your views here.</span>
<span class="token keyword">class</span> RegisterView<span class="token punctuation">(</span>View<span class="token punctuation">)</span>:
<span class="token string">"'注册类试图'"</span>
def get<span class="token punctuation">(</span>self<span class="token punctuation">,</span>request<span class="token punctuation">)</span>:
<span class="token string">"'显示注册页面'"</span>
<span class="token keyword">return</span> render<span class="token punctuation">(</span>request<span class="token punctuation">,</span> <span class="token string">'register.html'</span><span class="token punctuation">)</span>
def post<span class="token punctuation">(</span>self<span class="token punctuation">,</span>request<span class="token punctuation">)</span>:
<span class="token string">"'进行注册处理'"</span>
<span class="token comment"># 接收数据</span>
username = request<span class="token punctuation">.</span>POST<span class="token punctuation">.</span>get<span class="token punctuation">(</span><span class="token string">'user_name'</span><span class="token punctuation">)</span>
password = request<span class="token punctuation">.</span>POST<span class="token punctuation">.</span>get<span class="token punctuation">(</span><span class="token string">'pwd'</span><span class="token punctuation">)</span>
email = request<span class="token punctuation">.</span>POST<span class="token punctuation">.</span>get<span class="token punctuation">(</span><span class="token string">'email'</span><span class="token punctuation">)</span>
allow = request<span class="token punctuation">.</span>POST<span class="token punctuation">.</span>get<span class="token punctuation">(</span><span class="token string">'allow'</span><span class="token punctuation">)</span>
<span class="token comment"># 进行数据校验</span>
<span class="token keyword">if</span> not all<span class="token punctuation">(</span><span class="token namespace">[username, password, email]</span><span class="token punctuation">)</span>:
<span class="token comment"># 数据不完整</span>
<span class="token keyword">return</span> render<span class="token punctuation">(</span>request<span class="token punctuation">,</span> <span class="token string">'register.html'</span><span class="token punctuation">,</span> <span class="token punctuation">{</span><span class="token string">'errmsg'</span>: <span class="token string">'数据不完整'</span><span class="token punctuation">}</span><span class="token punctuation">)</span>
<span class="token comment"># 检验邮箱</span>
<span class="token comment"># 如果不是一个邮箱，即邮箱形式不合法</span>
<span class="token keyword">if</span> not re<span class="token punctuation">.</span>match<span class="token punctuation">(</span>r<span class="token string">'^[a-z0-9][\w.\-]*@[a-z0-9\-]+(\.[a-z]{2,5}){1,2}$'</span><span class="token punctuation">,</span> email<span class="token punctuation">)</span>:
<span class="token comment"># 邮箱格式不正确</span>
<span class="token keyword">return</span> render<span class="token punctuation">(</span>request<span class="token punctuation">,</span> <span class="token string">'register.html'</span><span class="token punctuation">,</span> <span class="token punctuation">{</span><span class="token string">'errmsg'</span>: <span class="token string">'邮箱不合法'</span><span class="token punctuation">}</span><span class="token punctuation">)</span>
<span class="token keyword">if</span> allow <span class="token operator">!</span>= <span class="token string">'on'</span>:
<span class="token comment"># 是否同意协议</span>
<span class="token keyword">return</span> render<span class="token punctuation">(</span>request<span class="token punctuation">,</span> <span class="token string">'register.html'</span><span class="token punctuation">,</span> <span class="token punctuation">{</span><span class="token string">'errmsg'</span>: <span class="token string">'请同意协议'</span><span class="token punctuation">}</span><span class="token punctuation">)</span>
<span class="token comment"># 校验用户名是否重复</span>
<span class="token keyword">try</span>:
user= User<span class="token punctuation">.</span>objects<span class="token punctuation">.</span>get<span class="token punctuation">(</span>username=username<span class="token punctuation">)</span>
except User<span class="token punctuation">.</span>DoesNotExist:
user = None
<span class="token keyword">if</span> user:
<span class="token comment"># 用户名已存在</span>
<span class="token keyword">return</span> render<span class="token punctuation">(</span>request<span class="token punctuation">,</span> <span class="token string">'register.html'</span><span class="token punctuation">,</span> <span class="token punctuation">{</span><span class="token string">'errmsg'</span>: <span class="token string">'用户名已存在'</span><span class="token punctuation">}</span><span class="token punctuation">)</span>
<span class="token comment"># 进行业务处理：进行用户注册</span>
user = User<span class="token punctuation">.</span>objects<span class="token punctuation">.</span>create_user<span class="token punctuation">(</span>username<span class="token punctuation">,</span> email<span class="token punctuation">,</span> password<span class="token punctuation">)</span>
user<span class="token punctuation">.</span>is_active = 0 <span class="token comment"># 不让他自动激活</span>
user<span class="token punctuation">.</span>save<span class="token punctuation">(</span><span class="token punctuation">)</span>
<span class="token comment">#发送激活邮件，包含激活链接：</span>
<span class="token comment">#激活连接中需要包含用户的身份信息，并且要把身份信息进行加密</span>
<span class="token comment">#加密用户的身份信息，生成激活token</span>
serializer=Serializer<span class="token punctuation">(</span>settings<span class="token punctuation">.</span>SECRET_KEY<span class="token punctuation">,</span>3600<span class="token punctuation">)</span>
info=<span class="token punctuation">{</span><span class="token string">'confirm'</span>:user<span class="token punctuation">.</span>id<span class="token punctuation">}</span>
token=serializer<span class="token punctuation">.</span>dumps<span class="token punctuation">(</span>info<span class="token punctuation">)</span> <span class="token comment">#返回的是字节</span>
token=token<span class="token punctuation">.</span>decode<span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token comment">#进行字节解码</span>
<span class="token comment"># 组织邮件信息</span>
subject = <span class="token string">'天天生鲜欢迎信息'</span>
message = <span class="token string">'欢迎注册'</span>
sender = settings<span class="token punctuation">.</span>EMAIL_FROM <span class="token comment"># 发件人</span>
receiver = <span class="token namespace">[email]</span>
html_message = <span class="token string">'<h1>%s欢迎您成为为天天生鲜交易市场注册会员</h1>请点击下面链接激活您的账户<br/><a href="http://127.0.0.1:8000/user/active/%s">http://127.0.0.1:8000/user/active/%s</a>'</span> <span class="token operator">%</span> <span class="token punctuation">(</span>username<span class="token punctuation">,</span> token<span class="token punctuation">,</span> token<span class="token punctuation">)</span>
send_mail<span class="token punctuation">(</span>subject<span class="token punctuation">,</span> message<span class="token punctuation">,</span> sender<span class="token punctuation">,</span> receiver<span class="token punctuation">,</span> html_message=html_message<span class="token punctuation">)</span>
<span class="token comment"># 返回应答，跳转到首页</span>
<span class="token keyword">return</span> redirect<span class="token punctuation">(</span>reverse<span class="token punctuation">(</span><span class="token string">'goods:index'</span><span class="token punctuation">)</span><span class="token punctuation">)</span>
<span class="token keyword">class</span> ActiveView<span class="token punctuation">(</span>View<span class="token punctuation">)</span>:
<span class="token string">"'用户激活'"</span>
def get<span class="token punctuation">(</span>self<span class="token punctuation">,</span>request<span class="token punctuation">,</span>token<span class="token punctuation">)</span>:
<span class="token string">"'进行用户激活'"</span>
<span class="token comment"># 解密参数，获取要激活的用户信息</span>
serializer = Serializer<span class="token punctuation">(</span>settings<span class="token punctuation">.</span>SECRET_KEY<span class="token punctuation">,</span> 3600<span class="token punctuation">)</span>
<span class="token keyword">try</span>:
info=serializer<span class="token punctuation">.</span>loads<span class="token punctuation">(</span>token<span class="token punctuation">)</span>
<span class="token comment">#获取待激活用户的id</span>
user_id=info<span class="token punctuation">[</span><span class="token string">'confirm'</span><span class="token punctuation">]</span>
<span class="token comment">#根据用户id获取用户信息</span>
user=User<span class="token punctuation">.</span>objects<span class="token punctuation">.</span>get<span class="token punctuation">(</span>id=user_id<span class="token punctuation">)</span>
user<span class="token punctuation">.</span>is_active=1
user<span class="token punctuation">.</span>save<span class="token punctuation">(</span><span class="token punctuation">)</span>
<span class="token comment">#跳转登录页面</span>
<span class="token keyword">return</span> redirect<span class="token punctuation">(</span>reverse<span class="token punctuation">(</span><span class="token string">'user:login'</span><span class="token punctuation">)</span><span class="token punctuation">)</span>
except SignatureExpired as e:
<span class="token comment">#激活链接已过期</span>
<span class="token keyword">return</span> HttpResponse<span class="token punctuation">(</span><span class="token string">'激活链接已过期'</span><span class="token punctuation">)</span>
</code></pre>
<p>然后在user/urls.py中添加如下内容太</p>
<pre><code class="prism language-powershell"><span class="token keyword">from</span> django<span class="token punctuation">.</span>urls import path<span class="token punctuation">,</span>re_path
<span class="token keyword">from</span> user<span class="token punctuation">.</span>views import RegisterView<span class="token punctuation">,</span>ActiveView
urlpatterns = <span class="token punctuation">[</span>
path<span class="token punctuation">(</span><span class="token string">'register'</span><span class="token punctuation">,</span>RegisterView<span class="token punctuation">.</span>as_view<span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">,</span>name=<span class="token string">'register'</span><span class="token punctuation">)</span><span class="token punctuation">,</span> <span class="token comment">#注册</span>
re_path<span class="token punctuation">(</span><span class="token string">'active/(?P<token>.*)$'</span><span class="token punctuation">,</span>ActiveView<span class="token punctuation">.</span>as_view<span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">,</span>name=<span class="token string">'active'</span><span class="token punctuation">)</span><span class="token punctuation">,</span> <span class="token comment">#用户激活</span>
<span class="token punctuation">]</span>
</code></pre>
<p>由于可能用到首页，所以在goods/urls.py中添加如下内容：</p>
<pre><code class="prism language-powershell"><span class="token keyword">from</span> django<span class="token punctuation">.</span>urls import path
<span class="token keyword">from</span> goods import views
urlpatterns = <span class="token punctuation">[</span>
path<span class="token punctuation">(</span><span class="token string">''</span><span class="token punctuation">,</span>views<span class="token punctuation">.</span>index<span class="token punctuation">,</span>name=<span class="token string">'index'</span><span class="token punctuation">)</span><span class="token punctuation">,</span> <span class="token comment">#首页</span>
<span class="token punctuation">]</span>
</code></pre>
<p>在goods/views.py中添加如下内容</p>
<pre><code class="prism language-powershell"><span class="token keyword">from</span> django<span class="token punctuation">.</span>shortcuts import render
<span class="token comment"># Create your views here.</span>
def index<span class="token punctuation">(</span>request<span class="token punctuation">)</span>:
<span class="token string">"'首页'"</span>
<span class="token keyword">return</span> render<span class="token punctuation">(</span>request<span class="token punctuation">,</span><span class="token string">'index.html'</span><span class="token punctuation">)</span>
</code></pre>
<h5>第二步、一些插件的安装</h5>
<p>发送邮件时，为了对有些链接进行加密，我们需要安装加密插件"itsdangerous"，直接运行：</p>
<pre><code class="prism language-powershell">pip install itsdangerous <span class="token comment">#第一步安装插件</span>
<span class="token keyword">from</span> itsdangerous import TimedJSONWebSignatureSerializer as Serializer <span class="token comment">#第二步 在user/views.py导入这个</span>
<span class="token comment"># 第三步，在settings中做如下配置,记得看视频改成自己的邮箱配置啊！</span>
<span class="token comment"># 发送邮件配置 </span>
EMAIL_BACKEND = <span class="token string">'django.core.mail.backends.smtp.EmailBackend'</span>
<span class="token comment"># smpt服务地址</span>
EMAIL_HOST = <span class="token string">'smtp.163.com'</span>
EMAIL_PORT = 25
<span class="token comment"># 发送邮件的邮箱</span>
EMAIL_HOST_USER = <span class="token string">'smartli_it@163.com'</span>
<span class="token comment"># 在邮箱中设置的客户端授权密码</span>
EMAIL_HOST_PASSWORD = <span class="token string">'smartli123'</span>
<span class="token comment"># 收件人看到的发件人</span>
EMAIL_FROM = <span class="token string">'天天生鲜<smartli_it@163.com>'</span>
</code></pre>
<p>mysql数据库应用小技巧</p>
<pre><code class="prism language-mysql"># 1、如何删除数据库中某个表中的数据，比如从df_user表中删除id=1的用户
delete from df_user where id=1
# 2、查看df_user表中的全部数据
select * from df_user;
select * from df_user \G; #这个可以让数据一行行的展示
# 3、如何查看表的结构,比如df_user表
desc df_user;
</code></pre>
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<div>开发一款**家庭开支数字化记录与结算App**是一个非常有意义的项目，旨在帮助家庭用户高效管理开支、记录消费、分析财务状况，并提供结算和预算管理功能。以下是基于**Python**和**C++**的开发方案，结合两者在数据处理、实时通信和系统开发中的优势。---##1.**项目需求分析**家庭开支数字化记录与结算App的核心功能包括：1.**用户管理**：-用户注册、登录，支持家庭成员管理。2.*</div>
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<span class="text-muted">z小天才b</span>
<a class="tag" taget="_blank" href="/search/MongoDB/1.htm">MongoDB</a><a class="tag" taget="_blank" href="/search/mongodb/1.htm">mongodb</a><a class="tag" taget="_blank" href="/search/%E6%95%B0%E6%8D%AE%E5%BA%93/1.htm">数据库</a>
<div>一、MongoDB简介1.1什么是MongoDB？MongoDB是一个基于分布式文件存储的开源NoSQL数据库系统，由C++语言编写，旨在为Web应用提供可扩展的高性能数据存储解决方案。MongoDB将数据存储为一个文档，数据结构由键值对组成，类似于JSON对象，字段值可以包含其他文档、数组及文档数组。1.2MongoDB的核心特性文档型数据库：数据以BSON（BinaryJSON）格式存储灵活的</div>
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<span class="text-muted">weixin_39630440</span>
<a class="tag" taget="_blank" href="/search/brew/1.htm">brew</a><a class="tag" taget="_blank" href="/search/mysql/1.htm">mysql</a><a class="tag" taget="_blank" href="/search/client/1.htm">client</a>
<div>尝试在虚拟环境下通过pip安装：pipinstallmysqlclient然后报错：OSError:mysql_confignotfound找到官方文档https://github.com/PyMySQL/mysqlclient-python，解释说安装前需安装另一个模块：brewinstallmysql-connector-c但是报错：查看报错信息，在安装mysql-connector-c前先b</div>
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<div>前言最近笔者要为python+appium课程做准备，mac在2019年重新安装了一次系统，这次重新在mac下搭建appium环境，刚好顺带写个文稿给大家分享分享搭建过程。一、环境和所需软件概述1.1目前环境：MacOS(10.15.3)1.2所需软件:jdk-8u91-macosx-x64.dmg(jdk1.8及以上版本应该都可以)android-sdk_r24.4.1-macosx.zip(m</div>
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<li><a href="/article/1903357455702749184.htm"
title="python接口自动化" target="_blank">python接口自动化</a>
<span class="text-muted">全世界最帅的男人</span>
<a class="tag" taget="_blank" href="/search/python/1.htm">python</a><a class="tag" taget="_blank" href="/search/%E8%87%AA%E5%8A%A8%E5%8C%96/1.htm">自动化</a><a class="tag" taget="_blank" href="/search/%E5%BC%80%E5%8F%91%E8%AF%AD%E8%A8%80/1.htm">开发语言</a>
<div>Python是一种非常流行的编程语言，也是许多接口自动化测试框架的首选语言。下面是一个简单的接口自动化测试框架的思路：1.安装必要的库和工具：在Python中，我们可以使用requests库来发送HTTP请求，使用unittest库来编写测试用例，使用HTMLTestRunner库来生成测试报告。此外，我们还需要安装一个代码编辑器，如PyCharm或VSCode。2.创建测试用例：编写测试用例是接</div>
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<li><a href="/article/1903355944075587584.htm"
title="Python接口自动化" target="_blank">Python接口自动化</a>
<span class="text-muted">花落同学</span>
<a class="tag" taget="_blank" href="/search/Python%E8%87%AA%E5%8A%A8%E5%8C%96%E4%BB%8E%E5%85%A5%E9%97%A8%E5%88%B0%E6%94%BE%E5%BC%83/1.htm">Python自动化从入门到放弃</a><a class="tag" taget="_blank" href="/search/python/1.htm">python</a><a class="tag" taget="_blank" href="/search/%E8%87%AA%E5%8A%A8%E5%8C%96/1.htm">自动化</a>
<div>4接口自动化4.1使用python实现接口自动化如果不了解接口测试可参考https://ke.qq.com/course/4092904使用Python的request库实现接口测试：importjsonimportrequests#使用session管理：#1.可以自动关联set-cookie里面的内容#2.可以加快与服务器的连接速度session=requests.session()#auth</div>
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<li><a href="/article/1903353172743745536.htm"
title="Python异步编程：从基础到高级" target="_blank">Python异步编程：从基础到高级</a>
<span class="text-muted">CarlowZJ</span>
<a class="tag" taget="_blank" href="/search/python/1.htm">python</a><a class="tag" taget="_blank" href="/search/%E7%BD%91%E7%BB%9C/1.htm">网络</a><a class="tag" taget="_blank" href="/search/%E6%95%B0%E6%8D%AE%E5%BA%93/1.htm">数据库</a>
<div>前言在现代软件开发中，异步编程已经成为一种必不可少的技能。Python的异步编程模型（基于asyncio）为开发者提供了一种高效的方式来处理高并发任务，而无需依赖多线程或多进程。异步编程不仅可以提高程序的性能，还能简化并发代码的复杂性。本文将带你从异步编程的基础概念出发，逐步深入到高级应用，帮助你掌握Python异步编程的核心技能。一、异步编程的基础概念1.1什么是异步编程？异步编程是一种编程范式</div>
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title="python实现接口自动化" target="_blank">python实现接口自动化</a>
<span class="text-muted">一只小H呀の</span>
<a class="tag" taget="_blank" href="/search/python/1.htm">python</a><a class="tag" taget="_blank" href="/search/%E8%87%AA%E5%8A%A8%E5%8C%96/1.htm">自动化</a><a class="tag" taget="_blank" href="/search/%E5%BC%80%E5%8F%91%E8%AF%AD%E8%A8%80/1.htm">开发语言</a>
<div>代码实现自动化相关理论代码编写脚本和工具实现脚本区别是啥?代码：优点：代码灵活方便缺点：学习成本高工具：优点：易上手缺点：灵活度低，有局限性。总结：功能脚本：工具自动化脚本：代码代码接口自动化怎么做的？第一步：python+request+unittest;具体描述？第二步：封装、调用、数据驱动、日志、报告;详细举例:第三步：api\scripts\data\log\report\until…脚本</div>
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<span class="text-muted">Echo_Wish</span>
<a class="tag" taget="_blank" href="/search/Python/1.htm">Python</a><a class="tag" taget="_blank" href="/search/%E7%AC%94%E8%AE%B0/1.htm">笔记</a><a class="tag" taget="_blank" href="/search/Python/1.htm">Python</a><a class="tag" taget="_blank" href="/search/%E7%AE%97%E6%B3%95/1.htm">算法</a><a class="tag" taget="_blank" href="/search/python/1.htm">python</a><a class="tag" taget="_blank" href="/search/%E5%BC%80%E5%8F%91%E8%AF%AD%E8%A8%80/1.htm">开发语言</a>
<div>在机器学习领域，Stacking是一种高级的集成学习方法，它通过将多个基本模型的预测结果作为新的特征输入到一个元模型中，从而提高整体模型的性能和鲁棒性。本文将深入介绍Stacking的原理、实现方式以及如何在Python中应用。什么是Stacking？Stacking，又称为堆叠泛化（StackedGeneralization），是一种模型集成方法，与Bagging和Boosting不同，它并不直</div>
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<span class="text-muted">音乐学家方大刚</span>
<a class="tag" taget="_blank" href="/search/Python/1.htm">Python</a><a class="tag" taget="_blank" href="/search/python/1.htm">python</a><a class="tag" taget="_blank" href="/search/%E9%9B%86%E6%88%90%E5%AD%A6%E4%B9%A0/1.htm">集成学习</a><a class="tag" taget="_blank" href="/search/%E5%BC%80%E5%8F%91%E8%AF%AD%E8%A8%80/1.htm">开发语言</a>
<div>我们都找到天使了说好了心事不能偷藏着什么都一起做幸福得没话说把坏脾气变成了好沟通我们都找到天使了约好了负责对方的快乐阳光下的山坡你素描的以后怎么抄袭我脑袋想的薛凯琪《找到天使了》在机器学习中，单一模型的性能可能会受到其局限性和数据的影响。为了解决这个问题，我们可以使用集成学习（EnsembleLearning）方法。集成学习通过结合多个基模型的预测结果，来提高整体模型的准确性和稳健性。Stacki</div>
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title="跟着黑马学MySQL基础篇笔记(1)-概述与SQL" target="_blank">跟着黑马学MySQL基础篇笔记(1)-概述与SQL</a>
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<a class="tag" taget="_blank" href="/search/mysql/1.htm">mysql</a><a class="tag" taget="_blank" href="/search/%E7%AC%94%E8%AE%B0/1.htm">笔记</a><a class="tag" taget="_blank" href="/search/sql/1.htm">sql</a>
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<a class="tag" taget="_blank" href="/search/%E6%95%B0%E6%8D%AE%E5%BA%93/1.htm">数据库</a><a class="tag" taget="_blank" href="/search/postgresql/1.htm">postgresql</a>
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<span class="text-muted">程序猿与金融与科技</span>
<a class="tag" taget="_blank" href="/search/%E6%95%B0%E6%8D%AE%E5%BA%93/1.htm">数据库</a><a class="tag" taget="_blank" href="/search/postgresql/1.htm">postgresql</a>
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<a class="tag" taget="_blank" href="/search/minimind%E5%AD%A6%E4%B9%A0/1.htm">minimind学习</a><a class="tag" taget="_blank" href="/search/%E5%AD%A6%E4%B9%A0/1.htm">学习</a><a class="tag" taget="_blank" href="/search/%E6%B7%B1%E5%BA%A6%E5%AD%A6%E4%B9%A0/1.htm">深度学习</a><a class="tag" taget="_blank" href="/search/%E7%94%9F%E6%88%90%E6%A8%A1%E5%9E%8B/1.htm">生成模型</a>
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<li><a href="/article/1903339429766950912.htm"
title="使用Seaborn库中的`violinplot`函数绘制水平小提琴图（Violin Plot）是一种常见的数据可视化方法" target="_blank">使用Seaborn库中的`violinplot`函数绘制水平小提琴图（Violin Plot）是一种常见的数据可视化方法</a>
<span class="text-muted">code_welike</span>
<a class="tag" taget="_blank" href="/search/%E4%BF%A1%E6%81%AF%E5%8F%AF%E8%A7%86%E5%8C%96/1.htm">信息可视化</a><a class="tag" taget="_blank" href="/search/%E6%95%B0%E6%8D%AE%E5%88%86%E6%9E%90/1.htm">数据分析</a><a class="tag" taget="_blank" href="/search/%E6%95%B0%E6%8D%AE%E6%8C%96%E6%8E%98/1.htm">数据挖掘</a><a class="tag" taget="_blank" href="/search/Python/1.htm">Python</a>
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title="【集成学习】：Stacking原理以及Python代码实现" target="_blank">【集成学习】：Stacking原理以及Python代码实现</a>
<span class="text-muted">Geeksongs</span>
<a class="tag" taget="_blank" href="/search/%E6%9C%BA%E5%99%A8%E5%AD%A6%E4%B9%A0/1.htm">机器学习</a><a class="tag" taget="_blank" href="/search/python/1.htm">python</a><a class="tag" taget="_blank" href="/search/%E6%9C%BA%E5%99%A8%E5%AD%A6%E4%B9%A0/1.htm">机器学习</a><a class="tag" taget="_blank" href="/search/%E6%B7%B1%E5%BA%A6%E5%AD%A6%E4%B9%A0/1.htm">深度学习</a><a class="tag" taget="_blank" href="/search/%E4%BA%BA%E5%B7%A5%E6%99%BA%E8%83%BD/1.htm">人工智能</a><a class="tag" taget="_blank" href="/search/%E7%AE%97%E6%B3%95/1.htm">算法</a>
<div>Stacking集成学习在各类机器学习竞赛当中得到了广泛的应用，尤其是在结构化的机器学习竞赛当中表现非常好。今天我们就来介绍下stacking这个在机器学习模型融合当中的大杀器的原理。并在博文的后面附有相关代码实现。总体来说，stacking集成算法主要是一种基于“标签”的学习，有以下的特点：用法：模型利用交叉验证，对训练集进行预测，从而实现二次学习优点：可以结合不同的模型缺点：增加了时间开销，容</div>
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<span class="text-muted">YOUFDJ</span>
<a class="tag" taget="_blank" href="/search/python/1.htm">python</a><a class="tag" taget="_blank" href="/search/%E5%BC%80%E5%8F%91%E8%AF%AD%E8%A8%80/1.htm">开发语言</a><a class="tag" taget="_blank" href="/search/Python/1.htm">Python</a>
<div>使用Seaborn绘制水平小提琴图水平小提琴图是一种常用的数据可视化工具，可以用于展示不同类别之间的分布情况。在Python中，我们可以使用Seaborn库的catplot函数来轻松地绘制水平小提琴图。本文将介绍如何使用Seaborn绘制水平小提琴图，并附带相应的源代码示例。首先，确保你已经安装了Seaborn库。如果没有安装，可以使用以下命令在命令行中安装：pipinstallseaborn安装</div>
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<span class="text-muted">被窝妄想家</span>
<a class="tag" taget="_blank" href="/search/python%E8%BF%9B%E9%98%B6%E6%8C%87%E5%8D%97/1.htm">python进阶指南</a><a class="tag" taget="_blank" href="/search/python/1.htm">python</a><a class="tag" taget="_blank" href="/search/%E6%95%B0%E6%8D%AE%E5%BA%93/1.htm">数据库</a><a class="tag" taget="_blank" href="/search/%E5%BC%80%E5%8F%91%E8%AF%AD%E8%A8%80/1.htm">开发语言</a>
<div>一、文件操作：Python的"读写之眼"1.1文件基础哲学在计算机世界中，文件就像一本本等待翻阅的典籍。Python的open()函数如同手持放大镜，让我们能精确控制阅读和书写：#经典打开模式组合withopen("data.txt","r+",encoding="utf-8")asf:#r+模式：可读可写，文件指针初始位置在开头content=f.read(10)#读取前10个字节f.seek(</div>
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<li><a href="/article/1903337780369485824.htm"
title="使用Seaborn绘制小提琴图" target="_blank">使用Seaborn绘制小提琴图</a>
<span class="text-muted">CodeWG</span>
<a class="tag" taget="_blank" href="/search/python/1.htm">python</a><a class="tag" taget="_blank" href="/search/%E5%BC%80%E5%8F%91%E8%AF%AD%E8%A8%80/1.htm">开发语言</a>
<div>使用Seaborn绘制小提琴图在数据分析与可视化中，小提琴图是一种常用的图表类型。它能够展示数据的分布情况，同时还能显示中位数、四分位数和异常值等统计指标。在Python中，我们可以使用Seaborn库来轻松地绘制小提琴图。下面就来详细介绍一下如何使用Seaborn来创建小提琴图。首先，我们需要导入必要的库和数据集。这里我们使用Seaborn自带的数据集tips作为例子。importseaborn</div>
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<li><a href="/article/1903336645160136704.htm"
title="SSM卫生人员评审专家申报系统" target="_blank">SSM卫生人员评审专家申报系统</a>
<span class="text-muted">浅浅学姐</span>
<a class="tag" taget="_blank" href="/search/%E8%AF%BE%E7%A8%8B%E8%AE%BE%E8%AE%A1/1.htm">课程设计</a><a class="tag" taget="_blank" href="/search/%E6%AF%95%E4%B8%9A%E8%AE%BE%E8%AE%A1/1.htm">毕业设计</a><a class="tag" taget="_blank" href="/search/%E6%9C%8D%E5%8A%A1%E5%99%A8/1.htm">服务器</a><a class="tag" taget="_blank" href="/search/%E8%BF%90%E7%BB%B4/1.htm">运维</a><a class="tag" taget="_blank" href="/search/java/1.htm">java</a><a class="tag" taget="_blank" href="/search/%E5%BC%80%E5%8F%91%E8%AF%AD%E8%A8%80/1.htm">开发语言</a><a class="tag" taget="_blank" href="/search/%E6%95%B0%E6%8D%AE%E5%BA%93/1.htm">数据库</a><a class="tag" taget="_blank" href="/search/%E5%90%8E%E7%AB%AF/1.htm">后端</a>
<div>点赞+收藏+关注→添加文档最下方联系方式咨询本源代码、数据库本人在Java毕业设计领域有多年的经验，陆续会更新更多优质的Java实战项目希望你能有所收获，少走一些弯路。关注我不迷路项目视频SSM347的卫生人员项目申报评审管理系统资料介绍一、设计说明1.1研究背景面对大量的信息，传统的管理系统，都是通过笔记的方式进行详细信息的统计，后来出现电脑，通过电脑输入软件将纸质的信息统计到电脑上，这种方式比</div>
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<li><a href="/article/1903336267135905792.htm"
title="SSM卫生人员评审专家申报系统" target="_blank">SSM卫生人员评审专家申报系统</a>
<span class="text-muted">Plume98</span>
<a class="tag" taget="_blank" href="/search/%E8%AF%BE%E7%A8%8B%E8%AE%BE%E8%AE%A1/1.htm">课程设计</a><a class="tag" taget="_blank" href="/search/%E6%AF%95%E4%B8%9A%E8%AE%BE%E8%AE%A1/1.htm">毕业设计</a><a class="tag" taget="_blank" href="/search/%E6%9C%8D%E5%8A%A1%E5%99%A8/1.htm">服务器</a><a class="tag" taget="_blank" href="/search/%E8%BF%90%E7%BB%B4/1.htm">运维</a><a class="tag" taget="_blank" href="/search/java/1.htm">java</a><a class="tag" taget="_blank" href="/search/%E5%BC%80%E5%8F%91%E8%AF%AD%E8%A8%80/1.htm">开发语言</a><a class="tag" taget="_blank" href="/search/%E6%95%B0%E6%8D%AE%E5%BA%93/1.htm">数据库</a><a class="tag" taget="_blank" href="/search/%E5%90%8E%E7%AB%AF/1.htm">后端</a>
<div>点赞+收藏+关注→添加文档最下方联系方式咨询本源代码、数据库本人在Java毕业设计领域有多年的经验，陆续会更新更多优质的Java实战项目希望你能有所收获，少走一些弯路。关注我不迷路项目视频SSM347的卫生人员项目申报评审管理系统资料介绍一、设计说明1.1研究背景面对大量的信息，传统的管理系统，都是通过笔记的方式进行详细信息的统计，后来出现电脑，通过电脑输入软件将纸质的信息统计到电脑上，这种方式比</div>
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<li><a href="/article/1903327055194419200.htm"
title="数据库事务：确保数据一致性的关键机制" target="_blank">数据库事务：确保数据一致性的关键机制</a>
<span class="text-muted">可儿·四系桜</span>
<a class="tag" taget="_blank" href="/search/%E6%95%B0%E6%8D%AE%E5%BA%93/1.htm">数据库</a><a class="tag" taget="_blank" href="/search/java/1.htm">java</a><a class="tag" taget="_blank" href="/search/%23/1.htm">#</a><a class="tag" taget="_blank" href="/search/MySQL/1.htm">MySQL</a><a class="tag" taget="_blank" href="/search/%E6%95%B0%E6%8D%AE%E5%BA%93/1.htm">数据库</a><a class="tag" taget="_blank" href="/search/java/1.htm">java</a><a class="tag" taget="_blank" href="/search/%E5%90%8E%E7%AB%AF/1.htm">后端</a>
<div>1.什么是数据库事务定义：事务（Transaction）是数据库管理系统中的一个逻辑工作单元，用于确保一组相关操作要么全部成功执行，要么全部不执行，从而维护数据的一致性和完整性。重要性：在多用户环境下，当多个事务并发执行时，为了保证数据的完整性和一致性，事务的概念变得至关重要。例如，在银行转账系统中，从一个账户扣款并给另一个账户加款这两个操作必须同时成功或者同时失败，否则就会导致资金账目混乱。2.</div>
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<li><a href="/article/1903326545334824960.htm"
title="Django系列教程（15）——上传文件" target="_blank">Django系列教程（15）——上传文件</a>
<span class="text-muted">l软件定制开发工作室</span>
<a class="tag" taget="_blank" href="/search/Django%E6%95%99%E7%A8%8B/1.htm">Django教程</a><a class="tag" taget="_blank" href="/search/django/1.htm">django</a><a class="tag" taget="_blank" href="/search/okhttp/1.htm">okhttp</a><a class="tag" taget="_blank" href="/search/python/1.htm">python</a>
<div>目录Django文件上传需要考虑的重要事项Django文件上传的3种常见方式项目创建与设置创建模型URLConf配置使用一般表单上传文件使用ModelForm上传文件Django文件上传需要考虑的重要事项文件或图片一般通过表单进行。用户在前端点击文件上传，然后以POST方式将数据和文件提交到服务器。服务器在接收到POST请求后需要将其存储在服务器上的某个地方。Django默认的存储地址是相对于根目</div>
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<li><a href="/article/1903322005965434880.htm"
title="python实际应用场景代码" target="_blank">python实际应用场景代码</a>
<span class="text-muted">yzx991013</span>
<a class="tag" taget="_blank" href="/search/python/1.htm">python</a><a class="tag" taget="_blank" href="/search/%E5%89%8D%E7%AB%AF/1.htm">前端</a><a class="tag" taget="_blank" href="/search/%E6%9C%8D%E5%8A%A1%E5%99%A8/1.htm">服务器</a>
<div>1.自动化文件整理importosimportshutildeforganize_downloads_folder():download_path="/Users/YourName/Downloads"#修改为你的下载路径file_types={"Images":[".jpg",".png",".gif"],"Documents":[".pdf",".docx",".txt"],"Videos":</div>
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<li><a href="/article/1903321374424887296.htm"
title="【业务场景实战】JWT实现用户登录" target="_blank">【业务场景实战】JWT实现用户登录</a>
<span class="text-muted">仰望-星空~~</span>
<a class="tag" taget="_blank" href="/search/java/1.htm">java</a>
<div>在我们平时登录注册的过程中，我们的信息都会由浏览器发送给后端进行处理，然后再插入到数据库中，下次我们进行登录的时候，只需要输入用户名和密码就可以登录成功进入网站进行操作了。但个人信息暴露在大众面前这是极其不安全的，对于我们的隐私，我们并不希望被别人知道。所以我们在登录的时候，浏览器中进行传递的数据有些是会脱敏、有些是需要进行加密之后才能进行传递的。一、JWT简介JWT（全称JSONWEBToken</div>
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<li><a href="/article/1903321374840123392.htm"
title="【业务场景实战】数据增量同步" target="_blank">【业务场景实战】数据增量同步</a>
<span class="text-muted">仰望-星空~~</span>
<a class="tag" taget="_blank" href="/search/android/1.htm">android</a>
<div>时间过得真快，又是一年求职季，再过几个月我也要找暑假实习了，最近比较忙加上自身状态也不是很好，导致我的博客断更了很长时间。之后我尽量每周一更，好了，今天我们来讲讲关于数据增量同步。在一些比较大、用户量比较多、实时性要求比较高的的系统中，我们通常需要进行数据同步。这不只是为了提高系统的并发量，降低数据库访问的压力，提升用户的体验。同时也是为了让系统能够稳定运行，满足特定的场景需求。对于一些购物网站实</div>
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<li><a href="/article/16.htm"
title="深入浅出Java Annotation(元注解和自定义注解）" target="_blank">深入浅出Java Annotation(元注解和自定义注解）</a>
<span class="text-muted">Josh_Persistence</span>
<a class="tag" taget="_blank" href="/search/Java+Annotation/1.htm">Java Annotation</a><a class="tag" taget="_blank" href="/search/%E5%85%83%E6%B3%A8%E8%A7%A3/1.htm">元注解</a><a class="tag" taget="_blank" href="/search/%E8%87%AA%E5%AE%9A%E4%B9%89%E6%B3%A8%E8%A7%A3/1.htm">自定义注解</a>
<div>一、基本概述
Annontation是Java5开始引入的新特征。中文名称一般叫注解。它提供了一种安全的类似注释的机制，用来将任何的信息或元数据（metadata）与程序元素（类、方法、成员变量等）进行关联。
更通俗的意思是为程序的元素（类、方法、成员变量）加上更直观更明了的说明，这些说明信息是与程序的业务逻辑无关，并且是供指定的工具或</div>
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<li><a href="/article/143.htm"
title="mysql优化特定类型的查询" target="_blank">mysql优化特定类型的查询</a>
<span class="text-muted">annan211</span>
<a class="tag" taget="_blank" href="/search/java/1.htm">java</a><a class="tag" taget="_blank" href="/search/%E5%B7%A5%E4%BD%9C/1.htm">工作</a><a class="tag" taget="_blank" href="/search/mysql/1.htm">mysql</a>
<div>
本节所介绍的查询优化的技巧都是和特定版本相关的，所以对于未来mysql的版本未必适用。
1 优化count查询
对于count这个函数的网上的大部分资料都是错误的或者是理解的都是一知半解的。在做优化之前我们先来看看
真正的count()函数的作用到底是什么。
count()是一个特殊的函数，有两种非常不同的作用，他可以统计某个列值的数量，也可以统计行数。
在统</div>
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<li><a href="/article/270.htm"
title="MAC下安装多版本JDK和切换几种方式" target="_blank">MAC下安装多版本JDK和切换几种方式</a>
<span class="text-muted">棋子chessman</span>
<a class="tag" taget="_blank" href="/search/jdk/1.htm">jdk</a>
<div>环境：
MAC AIR,OS X 10.10,64位
历史：
过去 Mac 上的 Java 都是由 Apple 自己提供，只支持到 Java 6，并且OS X 10.7 开始系统并不自带（而是可选安装）（原自带的是1.6）。
后来 Apple 加入 OpenJDK 继续支持 Java 6，而 Java 7 将由 Oracle 负责提供。
在终端中输入jav</div>
</li>
<li><a href="/article/397.htm"
title="javaScript （1）" target="_blank">javaScript （1）</a>
<span class="text-muted">Array_06</span>
<a class="tag" taget="_blank" href="/search/JavaScript/1.htm">JavaScript</a><a class="tag" taget="_blank" href="/search/java/1.htm">java</a><a class="tag" taget="_blank" href="/search/%E6%B5%8F%E8%A7%88%E5%99%A8/1.htm">浏览器</a>
<div>JavaScript
1、运算符
运算符就是完成操作的一系列符号，它有七类： 赋值运算符（=,+=,-=,*=,/=,%=,<<=,>>=,|=,&=）、算术运算符(+,-,*,/,++,--,%)、比较运算符(>,<,<=,>=,==,===,!=,!==)、逻辑运算符(||,&&,!)、条件运算(?:)、位</div>
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<li><a href="/article/524.htm"
title="国内顶级代码分享网站" target="_blank">国内顶级代码分享网站</a>
<span class="text-muted">袁潇含</span>
<a class="tag" taget="_blank" href="/search/java/1.htm">java</a><a class="tag" taget="_blank" href="/search/jdk/1.htm">jdk</a><a class="tag" taget="_blank" href="/search/oracle/1.htm">oracle</a><a class="tag" taget="_blank" href="/search/.net/1.htm">.net</a><a class="tag" taget="_blank" href="/search/PHP/1.htm">PHP</a>
<div> 现在国内很多开源网站感觉都是为了利益而做的
当然利益是肯定的,否则谁也不会免费的去做网站
&</div>
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<li><a href="/article/651.htm"
title="Elasticsearch、MongoDB和Hadoop比较" target="_blank">Elasticsearch、MongoDB和Hadoop比较</a>
<span class="text-muted">随意而生</span>
<a class="tag" taget="_blank" href="/search/mongodb/1.htm">mongodb</a><a class="tag" taget="_blank" href="/search/hadoop/1.htm">hadoop</a><a class="tag" taget="_blank" href="/search/%E6%90%9C%E7%B4%A2%E5%BC%95%E6%93%8E/1.htm">搜索引擎</a>
<div>
IT界在过去几年中出现了一个有趣的现象。很多新的技术出现并立即拥抱了“大数据”。稍微老一点的技术也会将大数据添进自己的特性，避免落大部队太远，我们看到了不同技术之间的边际的模糊化。假如你有诸如Elasticsearch或者Solr这样的搜索引擎，它们存储着JSON文档，MongoDB存着JSON文档，或者一堆JSON文档存放在一个Hadoop集群的HDFS中。你可以使用这三种配</div>
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<li><a href="/article/778.htm"
title="mac os 系统科研软件总结" target="_blank">mac os 系统科研软件总结</a>
<span class="text-muted">张亚雄</span>
<a class="tag" taget="_blank" href="/search/mac+os/1.htm">mac os</a>
<div>1.1 Microsoft Office for Mac 2011
大客户版，自行搜索。
1.2 Latex （MacTex）:
系统环境：https://tug.org/mactex/
&nb</div>
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<li><a href="/article/905.htm"
title="Maven实战（四）生命周期" target="_blank">Maven实战（四）生命周期</a>
<span class="text-muted">AdyZhang</span>
<a class="tag" taget="_blank" href="/search/maven/1.htm">maven</a>
<div>1. 三套生命周期 Maven拥有三套相互独立的生命周期，它们分别为clean，default和site。 每个生命周期包含一些阶段，这些阶段是有顺序的，并且后面的阶段依赖于前面的阶段，用户和Maven最直接的交互方式就是调用这些生命周期阶段。 以clean生命周期为例，它包含的阶段有pre-clean, clean 和 post</div>
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<li><a href="/article/1032.htm"
title="Linux下Jenkins迁移" target="_blank">Linux下Jenkins迁移</a>
<span class="text-muted">aijuans</span>
<a class="tag" taget="_blank" href="/search/Jenkins/1.htm">Jenkins</a>
<div>1. 将Jenkins程序目录copy过去 源程序在/export/data/tomcatRoot/ofctest-jenkins.jd.com下面 tar -cvzf jenkins.tar.gz ofctest-jenkins.jd.com &</div>
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<li><a href="/article/1159.htm"
title="request.getInputStream()只能获取一次的问题" target="_blank">request.getInputStream()只能获取一次的问题</a>
<span class="text-muted">ayaoxinchao</span>
<a class="tag" taget="_blank" href="/search/request/1.htm">request</a><a class="tag" taget="_blank" href="/search/Inputstream/1.htm">Inputstream</a>
<div>问题：在使用HTTP协议实现应用间接口通信时，服务端读取客户端请求过来的数据，会用到request.getInputStream()，第一次读取的时候可以读取到数据，但是接下来的读取操作都读取不到数据
原因： 1. 一个InputStream对象在被读取完成后，将无法被再次读取，始终返回-1； 2. InputStream并没有实现reset方法（可以重</div>
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<li><a href="/article/1286.htm"
title="数据库SQL优化大总结之 百万级数据库优化方案" target="_blank">数据库SQL优化大总结之 百万级数据库优化方案</a>
<span class="text-muted">BigBird2012</span>
<a class="tag" taget="_blank" href="/search/SQL%E4%BC%98%E5%8C%96/1.htm">SQL优化</a>
<div>网上关于SQL优化的教程很多，但是比较杂乱。近日有空整理了一下，写出来跟大家分享一下，其中有错误和不足的地方，还请大家纠正补充。
这篇文章我花费了大量的时间查找资料、修改、排版，希望大家阅读之后，感觉好的话推荐给更多的人，让更多的人看到、纠正以及补充。
1.对查询进行优化，要尽量避免全表扫描，首先应考虑在 where 及 order by 涉及的列上建立索引。
2.应尽量避免在 where </div>
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<li><a href="/article/1413.htm"
title="jsonObject的使用" target="_blank">jsonObject的使用</a>
<span class="text-muted">bijian1013</span>
<a class="tag" taget="_blank" href="/search/java/1.htm">java</a><a class="tag" taget="_blank" href="/search/json/1.htm">json</a>
<div> 在项目中难免会用java处理json格式的数据，因此封装了一个JSONUtil工具类。
JSONUtil.java
package com.bijian.json.study;
import java.util.ArrayList;
import java.util.Date;
import java.util.HashMap;</div>
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<li><a href="/article/1540.htm"
title="[Zookeeper学习笔记之六]Zookeeper源代码分析之Zookeeper.WatchRegistration" target="_blank">[Zookeeper学习笔记之六]Zookeeper源代码分析之Zookeeper.WatchRegistration</a>
<span class="text-muted">bit1129</span>
<a class="tag" taget="_blank" href="/search/zookeeper/1.htm">zookeeper</a>
<div>Zookeeper类是Zookeeper提供给用户访问Zookeeper service的主要API，它包含了如下几个内部类
首先分析它的内部类，从WatchRegistration开始，为指定的znode path注册一个Watcher，
/**
* Register a watcher for a particular p</div>
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<li><a href="/article/1667.htm"
title="【Scala十三】Scala核心七：部分应用函数" target="_blank">【Scala十三】Scala核心七：部分应用函数</a>
<span class="text-muted">bit1129</span>
<a class="tag" taget="_blank" href="/search/scala/1.htm">scala</a>
<div>何为部分应用函数？
Partially applied function: A function that’s used in an expression and that misses some of its arguments.For instance, if function f has type Int => Int => Int, then f and f(1) are p</div>
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title="Tomcat Error listenerStart 终极大法" target="_blank">Tomcat Error listenerStart 终极大法</a>
<span class="text-muted">ronin47</span>
<a class="tag" taget="_blank" href="/search/tomcat/1.htm">tomcat</a>
<div>Tomcat报的错太含糊了，什么错都没报出来，只提示了Error listenerStart。为了调试，我们要获得更详细的日志。可以在WEB-INF/classes目录下新建一个文件叫logging.properties，内容如下
Java代码
handlers = org.apache.juli.FileHandler, java.util.logging.ConsoleHa</div>
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title="不用加减符号实现加减法" target="_blank">不用加减符号实现加减法</a>
<span class="text-muted">BrokenDreams</span>
<a class="tag" taget="_blank" href="/search/%E5%AE%9E%E7%8E%B0/1.htm">实现</a>
<div> 今天有群友发了一个问题，要求不用加减符号(包括负号)来实现加减法。
分析一下，先看最简单的情况，假设1+1，按二进制算的话结果是10，可以看到从右往左的第一位变为0，第二位由于进位变为1。
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<li><a href="/article/2048.htm"
title="读《研磨设计模式》-代码笔记-状态模式-State" target="_blank">读《研磨设计模式》-代码笔记-状态模式-State</a>
<span class="text-muted">bylijinnan</span>
<a class="tag" taget="_blank" href="/search/java/1.htm">java</a><a class="tag" taget="_blank" href="/search/%E8%AE%BE%E8%AE%A1%E6%A8%A1%E5%BC%8F/1.htm">设计模式</a>
<div>声明： 本文只为方便我个人查阅和理解，详细的分析以及源代码请移步 原作者的博客http://chjavach.iteye.com/
/*
当一个对象的内在状态改变时允许改变其行为，这个对象看起来像是改变了其类
状态模式主要解决的是当控制一个对象状态的条件表达式过于复杂时的情况
把状态的判断逻辑转移到表示不同状态的一系列类中，可以把复杂的判断逻辑简化
如果在</div>
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title="CUDA程序block和thread超出硬件允许值时的异常" target="_blank">CUDA程序block和thread超出硬件允许值时的异常</a>
<span class="text-muted">cherishLC</span>
<a class="tag" taget="_blank" href="/search/CUDA/1.htm">CUDA</a>
<div>调用CUDA的核函数时指定block 和 thread大小，该大小可以是dim3类型的（三维数组），只用一维时可以是usigned int型的。
以下程序验证了当block或thread大小超出硬件允许值时会产生异常！！！GPU根本不会执行运算！！！
所以验证结果的正确性很重要！！！
在VS中创建CUDA项目会有一个模板，里面有更详细的状态验证。
以下程序在K5000GPU上跑的。</div>
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<li><a href="/article/2302.htm"
title="诡异的超长时间GC问题定位" target="_blank">诡异的超长时间GC问题定位</a>
<span class="text-muted">chenchao051</span>
<a class="tag" taget="_blank" href="/search/jvm/1.htm">jvm</a><a class="tag" taget="_blank" href="/search/cms/1.htm">cms</a><a class="tag" taget="_blank" href="/search/GC/1.htm">GC</a><a class="tag" taget="_blank" href="/search/hbase/1.htm">hbase</a><a class="tag" taget="_blank" href="/search/swap/1.htm">swap</a>
<div>HBase的GC策略采用PawNew+CMS, 这是大众化的配置，ParNew经常会出现停顿时间特别长的情况，有时候甚至长到令人发指的地步，例如请看如下日志：
2012-10-17T05:54:54.293+0800: 739594.224: [GC 739606.508: [ParNew: 996800K->110720K(996800K), 178.8826900 secs] 3700</div>
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<li><a href="/article/2429.htm"
title="maven环境快速搭建" target="_blank">maven环境快速搭建</a>
<span class="text-muted">daizj</span>
<a class="tag" taget="_blank" href="/search/%E5%AE%89%E8%A3%85/1.htm">安装</a><a class="tag" taget="_blank" href="/search/mavne/1.htm">mavne</a><a class="tag" taget="_blank" href="/search/%E7%8E%AF%E5%A2%83%E9%85%8D%E7%BD%AE/1.htm">环境配置</a>
<div>一 下载maven
安装maven之前，要先安装jdk及配置JAVA_HOME环境变量。这个安装和配置java环境不用多说。
maven下载地址：http://maven.apache.org/download.html，目前最新的是这个apache-maven-3.2.5-bin.zip，然后解压在任意位置，最好地址中不要带中文字符，这个做java 的都知道，地址中出现中文会出现很多</div>
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<li><a href="/article/2556.htm"
title="PHP网站安全，避免PHP网站受到攻击的方法" target="_blank">PHP网站安全，避免PHP网站受到攻击的方法</a>
<span class="text-muted">dcj3sjt126com</span>
<a class="tag" taget="_blank" href="/search/PHP/1.htm">PHP</a>
<div>
对于PHP网站安全主要存在这样几种攻击方式:1、命令注入(Command Injection)2、eval注入(Eval Injection)3、客户端脚本攻击(Script Insertion)4、跨网站脚本攻击(Cross Site Scripting, XSS)5、SQL注入攻击(SQL injection)6、跨网站请求伪造攻击(Cross Site Request Forgerie</div>
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title="yii中给CGridView设置默认的排序根据时间倒序的方法" target="_blank">yii中给CGridView设置默认的排序根据时间倒序的方法</a>
<span class="text-muted">dcj3sjt126com</span>
<a class="tag" taget="_blank" href="/search/GridView/1.htm">GridView</a>
<div>public function searchWithRelated() {
$criteria = new CDbCriteria;
$criteria->together = true; //without th</div>
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<li><a href="/article/2810.htm"
title="Java集合对象和数组对象的转换" target="_blank">Java集合对象和数组对象的转换</a>
<span class="text-muted">dyy_gusi</span>
<a class="tag" taget="_blank" href="/search/java%E9%9B%86%E5%90%88/1.htm">java集合</a>
<div> 在开发中，我们经常需要将集合对象（List，Set）转换为数组对象，或者将数组对象转换为集合对象。Java提供了相互转换的工具，但是我们使用的时候需要注意，不能乱用滥用。
1、数组对象转换为集合对象
最暴力的方式是new一个集合对象，然后遍历数组，依次将数组中的元素放入到新的集合中，但是这样做显然过</div>
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<li><a href="/article/2937.htm"
title="nginx同一主机部署多个应用" target="_blank">nginx同一主机部署多个应用</a>
<span class="text-muted">geeksun</span>
<a class="tag" taget="_blank" href="/search/nginx/1.htm">nginx</a>
<div>近日有一需求，需要在一台主机上用nginx部署2个php应用，分别是wordpress和wiki，探索了半天，终于部署好了，下面把过程记录下来。
1. 在nginx下创建vhosts目录，用以放置vhost文件。
mkdir vhosts
2. 修改nginx.conf的配置， 在http节点增加下面内容设置，用来包含vhosts里的配置文件
#</div>
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<li><a href="/article/3064.htm"
title="ubuntu添加admin权限的用户账号" target="_blank">ubuntu添加admin权限的用户账号</a>
<span class="text-muted">hongtoushizi</span>
<a class="tag" taget="_blank" href="/search/ubuntu/1.htm">ubuntu</a><a class="tag" taget="_blank" href="/search/useradd/1.htm">useradd</a>
<div>ubuntu创建账号的方式通常用到两种：useradd 和adduser . 本人尝试了useradd方法，步骤如下：
1:useradd
使用useradd时，如果后面不加任何参数的话，如：sudo useradd sysadm 创建出来的用户将是默认的三无用户：无home directory ,无密码,无系统shell。
顾应该如下操作：
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<li><a href="/article/3191.htm"
title="第五章 常用Lua开发库2-JSON库、编码转换、字符串处理" target="_blank">第五章 常用Lua开发库2-JSON库、编码转换、字符串处理</a>
<span class="text-muted">jinnianshilongnian</span>
<a class="tag" taget="_blank" href="/search/nginx/1.htm">nginx</a><a class="tag" taget="_blank" href="/search/lua/1.htm">lua</a>
<div> JSON库
在进行数据传输时JSON格式目前应用广泛，因此从Lua对象与JSON字符串之间相互转换是一个非常常见的功能；目前Lua也有几个JSON库，本人用过cjson、dkjson。其中cjson的语法严格（比如unicode \u0020\u7eaf），要求符合规范否则会解析失败（如\u002），而dkjson相对宽松，当然也可以通过修改cjson的源码来完成</div>
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<li><a href="/article/3318.htm"
title="Spring定时器配置的两种实现方式OpenSymphony Quartz和java Timer详解" target="_blank">Spring定时器配置的两种实现方式OpenSymphony Quartz和java Timer详解</a>
<span class="text-muted">yaerfeng1989</span>
<a class="tag" taget="_blank" href="/search/timer/1.htm">timer</a><a class="tag" taget="_blank" href="/search/quartz/1.htm">quartz</a><a class="tag" taget="_blank" href="/search/%E5%AE%9A%E6%97%B6%E5%99%A8/1.htm">定时器</a>
<div>原创整理不易，转载请注明出处：Spring定时器配置的两种实现方式OpenSymphony Quartz和java Timer详解
代码下载地址：http://www.zuidaima.com/share/1772648445103104.htm
有两种流行Spring定时器配置：Java的Timer类和OpenSymphony的Quartz。
1.Java Timer定时
首先继承jav</div>
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<li><a href="/article/3445.htm"
title="Linux下df与du两个命令的差别？" target="_blank">Linux下df与du两个命令的差别？</a>
<span class="text-muted">pda158</span>
<a class="tag" taget="_blank" href="/search/linux/1.htm">linux</a>
<div> 一、df显示文件系统的使用情况，与du比較，就是更全盘化。 最经常使用的就是 df -T，显示文件系统的使用情况并显示文件系统的类型。 举比例如以下： [root@localhost ~]# df -T Filesystem Type &n</div>
</li>
<li><a href="/article/3572.htm"
title="[转]SQLite的工具类 ---- 通过反射把Cursor封装到VO对象" target="_blank">[转]SQLite的工具类 ---- 通过反射把Cursor封装到VO对象</a>
<span class="text-muted">ctfzh</span>
<a class="tag" taget="_blank" href="/search/VO/1.htm">VO</a><a class="tag" taget="_blank" href="/search/android/1.htm">android</a><a class="tag" taget="_blank" href="/search/sqlite/1.htm">sqlite</a><a class="tag" taget="_blank" href="/search/%E5%8F%8D%E5%B0%84/1.htm">反射</a><a class="tag" taget="_blank" href="/search/Cursor/1.htm">Cursor</a>
<div>在写DAO层时，觉得从Cursor里一个一个的取出字段值再装到VO(值对象)里太麻烦了，就写了一个工具类，用到了反射，可以把查询记录的值装到对应的VO里，也可以生成该VO的List。
使用时需要注意：
考虑到Android的性能问题，VO没有使用Setter和Getter，而是直接用public的属性。
表中的字段名需要和VO的属性名一样，要是不一样就得在查询的SQL中</div>
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<li><a href="/article/3699.htm"
title="该学习笔记用到的Employee表" target="_blank">该学习笔记用到的Employee表</a>
<span class="text-muted">vipbooks</span>
<a class="tag" taget="_blank" href="/search/oracle/1.htm">oracle</a><a class="tag" taget="_blank" href="/search/sql/1.htm">sql</a><a class="tag" taget="_blank" href="/search/%E5%B7%A5%E4%BD%9C/1.htm">工作</a>
<div> 这是我在学习Oracle是用到的Employee表，在该笔记中用到的就是这张表，大家可以用它来学习和练习。
drop table Employee;
-- 员工信息表
create table Employee(
-- 员工编号
EmpNo number(3) primary key,
-- 姓</div>
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