Java + jQuery Ajax 实例
<%@ page language="java" contentType="text/html" pageEncoding="utf-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>My JSP 'index.jsp' starting page</title>
<meta http-equiv="content" content="text/html;charset=utf-8">
<!--
<link type="text/css" href="styles.css">
-->
<script type="text/javascript" src="jquery-1.3.2.js"></script>
<script type="text/javascript">
function sub()
{
$.ajax({
type:"post", //请求方式
url:"./test", //发送请求地址
data:{ //发送给数据库的数据
username:$("#username").val(),
content:$("#content").val()
},
//请求成功后的回调函数有两个参数
success:function(data,textStatus){
$("#resText").html(data);
}
});
}
</script>
</head>
<body>
<form action="./test" method="post">
<p>评论：</p>
<p>姓名：<input type="text"/></p>
<p>内容：<textarea rows="2" cols="20"></textarea></p>
<p><input type="button" value="提交"/></p>
</form>
<div>
已有评论：
</div>
<div>
</div>
</body>
</html>
package com;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class test extends HttpServlet {
/**
* The doPost method of the servlet. <br>
*
* This method is called when a form has its tag value method equals to post.
*
* @param request the request send by the client to the server
* @param response the response send by the server to the client
* @throws ServletException if an error occurred
* @throws IOException if an error occurred
*/
public void service(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
//处理中文问题
request.setCharacterEncoding("utf-8");
response.setContentType("text/html;charset=utf-8");
System.out.println("start............");
String username=request.getParameter("username");
String content=request.getParameter("content");
//username=new String(username.getBytes("gb2312"),"utf-8");
PrintWriter out = response.getWriter();
out.write(username);
System.out.println("username>>=="+username);
out.write(content);
out.flush();
out.close();
System.out.println("end");
}
}
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