Windows 10 jdk8(1.8) IntelliJ IDEA spring 4 和 springMVC MySQL 5.7 maven 3.3 mybatis 3.4 DBCP Tomcat 8.5 项目上传到了Github方便查看：https://github.com/finch-xu/s... 有用的话欢迎加星。
页面演示：
首先新建项目
如图所示新建maven的webapp
新建maven的webapp
建数据库和数据表
CREATE DATABASE books; CREATE TABLE bookadmin ( bid int(11) NOT NULL AUTO_INCREMENT, bn varchar(255) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL, author varchar(255) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL, press varchar(255) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL, PRIMARY KEY (bid) USING BTREE ) ENGINE = InnoDB AUTO_INCREMENT = 14 CHARACTER SET = utf8 COLLATE = utf8_general_ci ROW_FORMAT = Dynamic; 数据库结构
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"
version="4.0">
Archetype Created Web Applicationindex.jspcontextConfigLocationclasspath:applicationContext*.xmlorg.springframework.web.context.ContextLoaderListenerencodingorg.springframework.web.filter.CharacterEncodingFilterencodingUTF-8encoding/*springmvc-weborg.springframework.web.servlet.DispatcherServletcontextConfigLocationclasspath:spring-mvc.xmlspringmvc-web/
然后就是代码：
Mapper部分：
BooksMapper.xml
PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-mapper.dtd">
bookadmin
bid,bn,author,press
INSERT INTO
bn,author,
press,
#{bn,jdbcType=VARCHAR},#{author,jdbcType=VARCHAR},
#{press,jdbcType=VARCHAR},
update
set bn = #{bn},author = #{author},press = #{press}
where bid = #{bid}
delete
from
where bid = #{bid}
BooksMapper.java
package cn.book.mapper;
import cn.book.pojo.Bookadmin;
import java.util.List;
public interface BooksMapper{
List list();
int insert(Bookadmin record);
int update(Bookadmin b);
int delete(Bookadmin bid);
Bookadmin getBookByBid(Integer bid);
} POJO实体
Bookadmin.java
package cn.book.pojo;
public class Bookadmin {
Integer bid;
String bn;
String author;
String press;
public Integer getBid() {
return bid;
}
public void setBid(Integer bid) {
this.bid = bid;
}
public String getBn() {
return bn;
}
public void setBn(String bn) {
this.bn = bn;
}
public String getAuthor() {
return author;
}
public void setAuthor(String author) {
this.author = author;
}
public String getPress() {
return press;
}
public void setPress(String press) {
this.press = press;
}
@Service public class BooksServiceImpl implements BooksService {
@Autowired
private BooksMapper booksMapper;
// 列出数据
@Override
public List list(){
List list = this.booksMapper.list();
return list;
}
// 插入数据
@Override
public int insertBook(Bookadmin bookadmin){
return booksMapper.insert(bookadmin);
}
// 更新数据
@Override
public int update(Bookadmin b){
return booksMapper.update(b);
}
// 删除数据
@Override
public int deleteBookByBid(Bookadmin bid){
return booksMapper.delete(bid);
}
@Override
public Bookadmin getBookByBid(int bid){
return booksMapper.getBookByBid(bid);
}
java.lang.NullPointerException: Attempt to invoke virtual method 'int android.view.View.getImportantForAccessibility()' on a null object reference
出现以上异常.然后就在baidu上
cmd命令打jar是如下实现：
在运行里输入cmd，利用cmd命令进入到本地的工作盘符。(如我的是D盘下的文件有此路径 D:\workspace\prpall\WEB-INF\classes)
现在是想把D:\workspace\prpall\WEB-INF\classes路径下所有的文件打包成prpall.jar。然后继续如下操作：
cd D: 回车
cd workspace/prpal
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml&q
Given a 2D binary matrix filled with 0's and 1's, find the largest rectangle containing all ones and return its area.
public class Solution {
public int maximalRectangle(char[][] matrix)
随着RESTful Web Service的流行，测试对外的Service是否满足期望也变的必要的。从Spring 3.2开始Spring了Spring Web测试框架，如果版本低于3.2，请使用spring-test-mvc项目（合并到spring3.2中了）。
Spring MVC测试框架提供了对服务器端和客户端（基于RestTemplate的客户端）提供了支持。
&nbs
[[UIApplication sharedApplication] setStatusBarStyle:UIStatusBarStyleLightContent];
/*you'll also need to set UIViewControllerBasedStatusBarAppearance to NO in the plist file if you use this method
英文资料：
Thread Dump and Concurrency Locks
Thread dumps are very useful for diagnosing synchronization related problems such as deadlocks on object monitors. Ctrl-\ on Solaris/Linux or Ctrl-B
