flask和sqlite
一.flask一个聊天或留言的:
目录结构： flask └── zdy ├── modle │ ├── __init__.py │ └── kkk.py ├── run.py #主要文件运行配置 ├── static │ └── kkk.html ├── templates │ ├── admin.html #删除留言的，功能太烂，一删除就删除了所有人的所有留言，汗，，， │ ├── hello2.html #主要文件：留言模板 │ ├── hello.html │ ├── __init__.py │ └── login.html #登录 └── test.db #这个事sqlite3数据库
其中配置文件run.py和hello2.html如下：
root@bogon:~/flask# cat zdy/run.py
#!/bin/python
from flask import Flask,flash,request,render_template,url_for,redirect,session,abort,escape
import os,sqlite3,datetime
SECRET_KEY = '123456'
app = Flask(__name__)
app.config.from_envvar('FLASKR_SETTING',silent=True)
app.secret_key = '123456'
@app.route('/')
def index():
html_logout='''<a href="logout"> log out ?</a>'''
html_login='''<a href="login"> log in ?</a>'''
if 'username' in session:
return 'Logged in as %s,%s' % (escape(session['username']),html_logout )
flash('-******************************************')
return 'You are not logged in or had logged out!%s' % html_login
@app.route('/test')
def test():
return redirect(url_for('user_login'))
@app.route('/user_login')
def user_login():
abort(401)
this_is_never_executed()
@app.route('/info')
def info():
disk=os.popen('df -m').read()
mem=os.popen('free -m').read()
sysos=os.popen('uname -a').read()
up_time=os.popen('uptime').read()
ip_addr=os.popen('ifconfig eth0|grep inet').read()
html_01="<html><body> \
<h4> 1.sysos version:</h4><pre>%s</pre> \
<h4>2.Mem info:</h4><pre>%s</pre> \
<h3>3.Disk info:</h3><pre>%s</pre> \
<h3>4.Uptime info:</h3><pre>%s</pre> \
<h3>5.Ip_address:</h3><pre>%s</pre> \
</body></html>" % (sysos,mem,disk,up_time,ip_addr)
return html_01
@app.route('/login/',methods=['GET','POST'])
def login():
if request.method == 'POST':
session['username'] = request.form['username']
session['passwd'] = request.form['passwd']
user = request.form['username']
passwd = request.form['passwd']
if user == None or user == '' or passwd == '':
return redirect(url_for('login'))
#return redirect(url_for('user'))
elif user == 'admin':
return redirect(url_for('admin'))
else:
return redirect('user/%s'% user)
#return redirect('user',name='username')
return render_template('login.html')
@app.route('/logout/')
def logout():
session.pop('username',None)
html='<html><body><center>goodbye ,see you later !<a href="/login">agin login</a></body></html>'
return (html)
@app.route('/user/',methods = ['GET','POST'])
@app.route('/user/<name>',methods = ['GET','POST'])
def user(name='guest'):
time = datetime.datetime.now().strftime('%Y-%m-%d %H:%M:%S')
#if not session.get('login'):
if 'username' not in session or session['username'] == '':
return redirect(url_for('login'))
# print escape(session['username'])
# print session['username']
name = session['username']
if request.method == 'POST':
username = request.form.get('username')
messages = request.form.get('messages')
# time = datetime.datetime.now().strftime('%Y-%M-%d %H:%M:%S')
value = [username,messages,time]
cx=sqlite3.connect('/home/kkk/flask/zdy/test.db')
cu=cx.cursor()
if username:
name = username
if messages == '':
mes=cu.execute('select * from msg')
msg=mes.fetchall()
cx.commit()
cx.close()
return render_template('hello2.html',name=name,msg=msg,time=time)
#return redirect('/user/%s'%username)
else:
# cx=sqlite3.connect('/home/kkk/flask/zdy/test.db')
# cu=cx.cursor()
cu.execute('insert into msg values (?,?,?)',value)
cx.commit()
mes=cu.execute('select * from msg')
msg=mes.fetchall()
cx.commit()
cx.close()
return render_template('hello2.html',name=name,msg=msg,time=time)
else:
return redirect('/user')
# return '%s say: %s' % (username,messages)
return render_template('hello2.html',name=name,time=time)
@app.route('/admin/',methods=['GET','POST'])
def admin():
time = datetime.datetime.now().strftime('%Y-%m-%d %H:%M:%S')
a = request.form.get('time_start')
b = request.form.get('time_end')
c = request.form.get('ad_name')
stat = ''
cx=sqlite3.connect('/home/kkk/flask/zdy/test.db')
cu=cx.cursor()
if session['username'] == 'admin' and session['passwd'] == '4854125':
if a != '' and b != '' and a != None and b != None and b >= a:
print a,b
mes=cu.execute('delete from msg where %s <= date_time <= %s'%(a,b))
cx.commit()
cx.close()
stat = 0
stat = 1
return render_template('admin.html',time=time,a=a,b=b,stat=stat)
elif c != '' and c != None:
mes=cu.execute("delete from msg where username = '%s'" % c)
cx.commit()
cx.close()
stat = 1
return render_template('admin.html',time=time,c=c,stat=stat)
else:
return render_template('admin.html',time=time)
return redirect(url_for('login'))
@app.route('/kkk')
def kkk():
return static/kkk.html
@app.route('/cmd/<shell>')
def reboot(shell):
cmd=os.popen(shell).read()
html='<html><body><pre>%s</pre></body></html>'% cmd
return html
@app.route('/post/<int:post_id>')
def show_post(post_id):
return 'post_id:%s' % post_id
if __name__ == '__main__':
app.run(host='0.0.0.0',port=88,debug=True)
hello2.html
root@bogon:~/flask# cat zdy/templates/hello2.html
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>聊天平台</title>
<script type="text/javascript">
function low(){
document.getElementById( 'im').scrollTop=document.getElementById('im').scrollHeight;
}
function add(){
var now = new Date();
var div = document.getElementById('scrolldIV');
div.innerHTML = div.innerHTML + 'time_' + now.getTime() + '<br />';
div.scrollTop = div.scrollHeight;
}
</script>
<style type="text/css" media="all">
*{ margin:0; padding:0; font-size:100%; }
html, body{ height:100%; }
html{ background-color:#000; box-sizing:border-box; -webkit-box-sizing:border-box; -moz-box-sizing:border-box; padding:48px 0 52px 0; overflow:hidden; }
body{ color:#333; font:12px/1.5 verdana; }
li{ list-style:none; list-style-type:none; }
.header, .footer, .wrapper{ position:relative; }
.header, .footer{ z-index:2; background-color:#369; }
.header{ height:48px; margin-top:-48px; }
.footer{ height:300px; }
.wrapper{ z-index:1; height:100%; padding-left:200px; background-color:#CEEDFC; }
.wrapper div.leftbar, .wrapper div.rightbar{ display:inline; float:left; height:100%; overflow:hidden; overflow-y:scroll; }
.wrapper div.leftbar{ width:100%; margin-left:-200px; }
.wrapper div.rightbar{ width:200px; }
</style>
</head>
<body onload="low()">
<div class="header" >
{% if name %}
<h1>- - {{ name }} ,欢迎来到聊天平台放松心情~~~~~</h1>
北京时间:{{ time }}
{% else %}
<h1>- -欢迎来到聊天平台放松心情~~~~~</h1>
{% endif %}
</div>
<div class="wrapper">
<div class="leftbar">
<table cellspacing="0" cellpadding="0" width="90%" >
<tr>
<td><h2>消息内容：</h2></td>
</tr>
<tr >
<td>
<textarea rows='35' cols='100' id='im' >
{% for info in msg%}
{{ info[2] }} [{{ info[0] }}]: {{info[1]}}
{% endfor %}
</textarea>
</td>
</tr>
</table>
<!--<div id="im" style="width:1000px; height:1000px;" >
{% for info in msg%}
{{ info[0] }} say: {{info[1]}}<br>
{% endfor %}
</div> -->
</div>
<div class="rightbar">
<table cellspacing="0" cellpadding="0" width="100%" >
<tr>
<td>公告：</td>
</tr>
</table>
<div style="width:6000px; height:100px; ">同学们好好聊天，增加情感啊~</div>
</div>
</div>
<div class="footer" >
<form method='post'>
- 昵称: <input type='text' name='username' value={{name}} /><br>
- 消息: <input type='text' name='messages' />
<input type='submit' value='发送' />
<input type='submit' value='刷新' />
<a href='/logout' >退出</a>
</form>
</div>
</body>
</html>
效果图如下：
登录界面目前opera可以正常显示，IE和火狐显示的不怎么好！