文件结构：@H_502_2@

ajax url 获取提交@H_502_2@

index.jsp

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
    pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<Meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Insert title here</title>
<script type="text/javascript" src="jquery.js"></script>
<script type="text/javascript">
$(function(){
	$("input[type='button']").bind("click",function(){
		/**Ajax的请求*/
		
		$.ajax({
			//请求的路径及所传的参数
			url:"user.jsp",data:{//发送给数据库的数据
				   username:$("#username").val(),content:$("#content").val()
				   },//是否异步
			async:true,//请求的方法
			type:"get",//请求成功时调用
			success:function(msg){
			alert(msg);
			},//请求失败时调用
			error:function(msg){
			alert(msg);
			}
		});
	});
});

</script>
</head>
<body>
<body> 
<input type="text" id ="username" class="username" />
<input type="text" id ="content" class="content" /> 
    <input type="button" value="Ajax请求" />  
</body>  
</body>
</html>

user.jsp

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
   String name = request.getParameter("username");
	String content = request.getParameter("content");
   if("zxl".equals(name)){
     out.print("用户名正确"+content);
   }else{
     out.println("用户名错误");
   }
%>

ajax 指定url提交：@H_502_2@

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
    pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<Meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Insert title here</title>
<script type="text/javascript" src="jquery.js"></script>
<script type="text/javascript">
$(function(){
	$("input[type='button']").bind("click",function(){
		/**Ajax的请求*/
		
		$.ajax({
			//请求的路径及所传的参数
			url:"user.jsp?username=zxl",//请求失败时调用
			error:function(msg){
			alert(msg);
			}
		});
	});
});

</script>
</head>
<body>
<body> 
<input type="text" id ="username" class="username" />
<input type="text" id ="content" class="content" /> 
    <input type="button" value="Ajax请求" />  
</body>  
</body>
</html>

=================================================================================@H_502_2@

一、简单的Ajax请求

Js代码

<strong><script>@H_502_2@
$(function@H_502_2@(){@H_502_2@
$("input[type='button']"@H_502_2@).bind("click"@H_502_2@,function@H_502_2@(){@H_502_2@
/**Ajax的请求*/@H_502_2@@H_502_2@
$.ajax({@H_502_2@
//请求的路径@H_502_2@@H_502_2@
url:"json.html"@H_502_2@,@H_502_2@
//是否异步@H_502_2@@H_502_2@
async:true@H_502_2@,0)">//请求的方法@H_502_2@@H_502_2@
type:"get"@H_502_2@,0)">//请求成功时调用@H_502_2@@H_502_2@
success:function@H_502_2@(msg){@H_502_2@
alert(msg);@H_502_2@
},0)">//请求失败时调用@H_502_2@@H_502_2@
error:function@H_502_2@(msg){@H_502_2@
alert(msg);@H_502_2@
}@H_502_2@
});@H_502_2@
});@H_502_2@
});@H_502_2@
</script>@H_502_2@
</strong>@H_502_2@