1  public class Person2     {3         public string Name { get; set; }4         public string Address { get; set; }5         public int Age { get; set; }6     }

 1 $("#btnJson").on("click", function () { 2                 var datajson = { Name: "Jeffcky", Age: 24, Address: "湖南省" }; 3                 console.log(datajson); 4                 $.ajax({ 5                     url: "../api/WebAPi/PostPerson", 6                     contentType: "application/x-www-form-urlencoded;charset=utf-8", 7                     dataType: "json", 8                     type: "post", 9                     data: datajson,10                     success: function (data) {11                         console.log(data);12                     }13                 });14             });

1     [HttpPost]2         public IActionResult PostPerson([FromBody]Person p)3         {4             return Json(p);5         }