json数据传递 springmvc

1.jsp 引入js文件

	$(function() {
			var params = '{"id": 1,"name": "测试商品","price": 99.9,"detail": "测试商品描述","pic": "123456.jpg"}';
			$.ajax({
				url:"${pageContext.request.contextPath}/json.action",
				data:params,
	            contentType:"application/json;charset=UTF-8",//发送数据的格式
	            type:"post",
				dataType:"json",//接收数据的格式
				success:function(data){
				    alert(data.name);
	            }
	
			})
	    });

2.controller

 //jason数据交互
    @RequestMapping(value = "/json.action")
    public @ResponseBody
    Items json(@RequestBody Items items){
        return items;
    }