sqlite+php+ajax 即时聊天系统（ajax 长连接）一

来源：互联网发布：app软件大全编辑：程序博客网时间：2024/04/30 13:39

说点废话：今天lol的时候碰到一个坑货，技术确实不错，到后面，被我说了一句，那家伙居然说让我求他，他就玩。我骂了他一句傻逼。我就挂机，看着他们输了。有时候，看到别人要坑，我就先下手为强!

思路：sqlite:数据库数据，用来保存聊天记录；php链接数据库，接受ajax传送数据，返回处理结果；ajax异步获取聊天数据，异步更新聊天记录；

所用的数据库类，请参照前面blog。

一.登录

<?php session_start(); ?><!DOCTYPE html><html lang="zh-cn"><head><meta charset='utf-8'><link href="http://cdn.bootcss.com/bootstrap/3.3.2/css/bootstrap.min.css" rel="stylesheet"><!-- HTML5 shim and Respond.js for IE8 support of HTML5 elements and media queries --><!--[if lt IE 9]>  <script src="http://cdn.bootcss.com/html5shiv/3.7.2/html5shiv.min.js"></script>  <script src="http://cdn.bootcss.com/respond.js/1.4.2/respond.min.js"></script><![endif]--></head><style>.main{width: 500px;margin: 50px auto;}.info-list{border: 1px solid #dedede; height: 200px;overflow-y: scroll;}.info-list li{border: 0px;}</style><body onload="cycle();"><script>var xmlhttp;var a;//生成xmlhttp对象function create(){if(window.XMLHttpRequest){xmlhttp=new XMLHttpRequest();}else{xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");}}//回调方法function callback(){if(xmlhttp.readyState==4&&xmlhttp.status==200){document.getElementById("info_list").innerHTML=xmlhttp.responseText;//获取php获取到的聊天记录}}//启动function run(){create();xmlhttp.open("GET","/message/first.php",true);xmlhttp.onreadystatechange=callback;xmlhttp.send();}每隔500毫秒，便更新一次表中数据。function cycle(){setInterval("run()",500);}</script><div class="main"><div class="panel panel-default">  <div class="panel-heading">登录</div>  <div class="panel-body"><form method="POST" action="">  <div class="form-group">    <label for="exampleInputEmail1">账号</label>    <input type="text" name="username" class="form-control" id="exampleInputEmail1" placeholder="Enter email">  </div>  <div class="form-group">    <label for="exampleInputPassword1">密码</label>    <input type="password" name="password" class="form-control" id="exampleInputPassword1" placeholder="Password">  </div>    <input type="submit" name="submit" class="btn btn-default" value="登录">  <a type="button" class="btn btn-default" href="/message/register.php">注册</a></form>    </div></div></div><?php if($_POST['submit']){//登录，并且获取sessioninclude '../sqlite/sqlite_db.php';$db=new SqliteDb();$res=$db->query('user',' where username="'.$_POST['username'].'" and password="'.$_POST['password'].'"');if ($res) {foreach ($res as $key => $row) {$_SESSION['user']['username']=$row['username'];$_SESSION['user']['nickname']=$row['nickname'];}echo '<script>window.location.href="/message/";</script>';}}?>

<script src="my.js"></script><script src="http://cdn.bootcss.com/jquery/1.11.2/jquery.min.js"></script><script src="http://cdn.bootcss.com/bootstrap/3.3.2/js/bootstrap.min.js"></script></body></html>

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