刚开始学ajax。。。导入的jar包：jackson-mapper-asl-1.8.8.jar 和 jackson-core-asl-1.8.8.jar
jsp代码
<head>
<script type="text/javascript" src="<%=request.getContextPath() %>/js/jquery-1.9.1.js"></script>
<script type="text/javascript" src="<%=request.getContextPath() %>/js/jquery-1.9.1.min.js"></script>
<meta http-equiv="Content-Type" content="text/html; charset=utf8">
<title>Insert title here</title>
<script type="text/javascript">
function ajaxTest(){
$.ajax({
data:"name="+$("#name").val(), //参数
type:"GET",
dataType: 'json', //响应数据类型
url:"${pageContext.request.contextPath}/login/ajax.html",
dataFilter:function(data,type)
{console.log(data);
console.log(type);
},
error:function(data){
alert("出错了！！:"+data.msg);
console.log(arguments);
},
success:function(data){
alert("success:"+data.msg);
$("#result").html(data.msg) ;
console.log(arguments);
}
});
}
</script>
</head>
<body>
<input type="text" name="name" id="name"/>
<input type="submit" value="登录" onclick="ajaxTest();"/>
<div id="result"></div>
</body>
controller代码：
@RequestMapping(value="ajax",method=RequestMethod.GET)
public @ResponseBody Map<String,Object> login(HttpServletRequest request,HttpServletResponse response) throws IOException{
System.out.println(request.getParameter("name"));
Map<String,Object> map = new HashMap<String,Object>();
if(request.getParameter("name").equals("123")){
System.out.println("成功");
map.put("msg", "成功");
}else{
System.out.println("失败");
map.put("msg", "失败");
}
return map;
}
出现的错误
