$(document).ready(function () {
# 自己编写的json格式数据
 var schoolList={
  "pageCount": "2",
  "pageIndex": "1",
  "sign": "1",
  "uniPayId": "9dc1308bab2b4b49987a0c12dd7339f5"
}
 $.ajax({
        type:"POST",
        url:"/schoolroll/insert",
        contentType: "application/json", //必须这样写
        dataType:"json",
        data:JSON.stringify(schoolList),//schoolList是你要提交是json字符串
        success:function (data) {
 
        }
 
    })
})