Ajax请求 @RequestBody引发400或者415错误

var url = "http://localhost:8080/newkdd/queryPage";
        $.ajax({
           type : 'post',
           contentType:"application/json", 
               data:JSON.stringify({id:1}),
           url : url,
           success : function(data, status) {
               console.log(data);
           },
           error : function(data, status, e) {
               console.log("系统异常" + e);
           }
        });

修改为JSON格式，传入参数应为JSON字符串，重点如下：
contentType:"application/json",
data:JSON.stringify({id:1}),