文件结构：
ajax url 获取提交
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：
<%@ 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>
=================================================================================
一、简单的Ajax请求
Js代码
- <strong><script>
- $(function(){
- $("input[type='button']").bind("click",function(){
- /**Ajax的请求*/
- $.ajax({
- //请求的路径
- url:"json.html",
- //是否异步
- async:true,0)">//请求的方法
- type:"get",0)">//请求成功时调用
- success:function(msg){
- alert(msg);
- },0)">//请求失败时调用
- error:function(msg){
- alert(msg);
- }
- });
- });
- });
- </script>
- </strong>
<!—body部分-->
二、Ajax请求jsp（传参数）
1、get请求
Js代码
<strong><scripttype="text/javascript">
$(//请求的路径及所传的参数
url:"user.jsp?name=kouxiaolin",85)">function(msg){
alert(msg);
}
});
});
});
</script>
</strong>
<!—user.jsp-->
Java代码
<%@pagelanguage="java"import="java.util.*"pageEncoding="UTF-8"%>
<%
Stringname=request.getParameter("name");
if("kouxiaolin".equals(name)){
out.print("用户名正确");
}else{
out.println("用户名错误");
}
%>
2、post请求
Js代码
//参数也可以在前面定义好，然后再后面调用
//varobj={name:"kouxiaolin",pass:"123"};$("input[type='button']").bind("click",function(){
//请求的路径
url:"user.jsp",0)">//请求方式
type:"post",0)">//所传参数多个参数用&连接：data:"name=kouxiaolin&pass=123"
data:"name=kouxiaolin",0)">//data：obj,
function(msg){
alert(msg);
}
});
});
});
</script>
</strong>
三、Ajax请求解析json
