wx.request的入参是不是不能是json对象

var student = new Object();            student.name = "Lanny";            student.age = "25";            student.location = "China";            wx.request({              // 调用接口              url: 'http://localhost:8080/visisys1/abc/addCode',              method: 'GET',              data: {                data: "abc",                otherinfo: student              },                success(resp) {                      console.log("res******************", resp.data);                          }            })

当入参的data:{otherInfo: student},如果otherInfo是json对象时，后台入参也是json格式的，但是会报argument type mismatch的错误。

后台代码：

报错信息：