WebAPI-Ajax_参数传递绑定整理

（1）查询字符串参数名称和操作方法参数名称必须相同（不区分大小写）。参数的先后顺序可以不一致。

（2）Get()参数传递的本质是URL字符串拼接，但是URL字符串的长度受限制。

（3）Get()的参数支持基本数据类型，不支持实体数据类型。

（4）Get()参数的传递是在Http请求的头部传递，而不支持Request-Body传递。

（5）Get类型的方法命名，尽量采用“Get+方法名”的命名方式，在方法前面加上特性：[HttpGet]。

二、Post

1、Post参数传递是在Request-Body内传递。

2、Post参数可以传递基本数据类型，也可以传递实体数据类型。

3、Post操作方法只能包含一个实体数据类型，因为只能允许一个参数读取Request-Body中的数据。

4、Post传递参数时，无论是基本类型参数还是实体类型，均需要借助[FromBody]特性。（有些情况下不写[FromBody]特性也可以把参数传递进来，但为了规范化，最好是加上该特性）。

5、Post类型的方法命名，尽量采用“Post+方法名”的命名方式，在方法前面加上特性：[HttpPost]。

三、FromURI与FromBody

在默认情况下，Web API是从查询字符串中得到基本数据类型参数的值，从请求主体中得到复杂类型参数的值，如果想改变这种默认情况怎么办？

可以使用[FromURI]属性，是Web API从查询字符串中获取复杂类型参数的值，使用[FromBody]属性可以使Web API从请求主体中获取基本数据类型参数的值。

例如下面的Get方法

[HttpGet]
public string GetStudentById([FromUri]Student stu)
{ 

}

Get方法中包括复杂的类型参数，参数添加了[FromUri]属性，Web API将试图从查询字符串中得到Student类型参数的值。

同样，参考下面的Post方法：

[HttpPost]
public string Post([FromBody]string name)
{ }

　Web API将从请求主体中获取基本类型参数的值，而不是从请求字符串中获取。

前言
这部分内容大致和MVC部分差不多。在学习参事绑定之前，我们肯定要知道Controller（即控制器）是啥干啥的。

>>>其实，Controller（控制器）就是一个类，我们可以将它　放到项目根目录文件夹下的任何位置，当然，我们一般将它放到Controllers文件夹下(这是一个很好的习惯，因为这样方便管理，更方便以后的学习，在MVC中，有一个重要的规则:约定大于配置)。一个控制器类是个特殊类，类名必须以"Controller"结尾，并且必须继承于System.Web.Http.ApiController类，控制器中有大量的公共方法，即操作方法(公开接口)。Web Api仅仅支持HTTP
在了解Controller后，我们就想，如何进行参数绑定呢？下面我们继续学习。关于参数绑定问题，无非就是简单类型与复杂类型，单个参数与多个参数。Web API根据URL的查询字符串或请求主体中参数类型来绑定操作方法的参数。简单类型将会从querystring中获取，复杂类型参数，则Web Api默认将试图从请求主体获取值。

HTTP方法	Query String	Request Body
GET	简单类型	不能从请求主体中获取参数值
POST	简单类型	复杂类型
PUT	简单类型	复杂类型
PATCH	简单类型	复杂类型
DELETE	简单类型	不能从请求主体中获取参数值

下面是我们创建Web Api项目时VS默认添加的简单Controller类：

---

using Newtonsoft.Json.Linq;
using System;
using System.Web;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Net.Http;
using System.Web.Http;
using Newtonsoft.Json;
using System.Text;
using System.Web.Security;
//using System.Web.Http.Cors;//Microsoft.AspNet.WebApi.Cors

namespace SOA.Web.Controllers
{
    [BasicAuthorize]
    public class UsersController : ApiController
    {
        /// <summary>
        /// User Data List
        /// </summary>
        private List<Users> _userList = new List<Users>
        {
            new Users {UserID = 1, UserName = "Superman", UserEmail = "[email protected]"},
            new Users {UserID = 2, UserName = "Spiderman", UserEmail = "[email protected]"},
            new Users {UserID = 3, UserName = "Batman", UserEmail = "[email protected]"}
        };

        #region 用户登陆
        [AllowAnonymous]
        [HttpGet]
        public string Login(string account, string password)
        {

            if (account.Equals("Admin") && password.Equals("123456"))
            {
                FormsAuthenticationTicket ticketObject = new FormsAuthenticationTicket(0, account, DateTime.Now,
                            DateTime.Now.AddHours(1), true, string.Format("{0}&{1}", account, password),
                            FormsAuthentication.FormsCookiePath);
                var result = new { Result = true, Ticket = FormsAuthentication.Encrypt(ticketObject) };
                return JsonConvert.SerializeObject(result);
            }
            else
            {
                var result = new { Result = false };
                return JsonConvert.SerializeObject(result);
            }
        }


        #endregion

        #region HttpGet
        // GET api/Users
        [HttpGet]
        public IEnumerable<Users> Get()
        {
            return _userList;
        }

        // GET api/Users/5
        [HttpGet]
        [AllowAnonymous]
        //[EnableCors(origins: "http://localhost:9008/", headers: "*", methods: "GET,POST,PUT,DELETE")]
        public Users GetUserByID(int id)
        {
            string idParam = HttpContext.Current.Request.QueryString["id"];

            var user = _userList.FirstOrDefault(users => users.UserID == id);
            //传入User返回Boolean，符合条件返回true，返回User，内部循环集合每一个(项)User
            var user2 = _userList.FirstOrDefault(u => u.UserID == id);
            if (user == null)
            {
                throw new HttpResponseException(HttpStatusCode.NotFound);
                //throw new HttpResponseException(HttpStatusCode.NotFound);
            }
            return user;
        }

        //GET api/Users/?username=xx
        [HttpGet]
        public IEnumerable<Users> GetUserByName(string userName)
        {
            string userNameParam = HttpContext.Current.Request.QueryString["userName"];

            return _userList.Where(p => string.Equals(p.UserName, userName, StringComparison.OrdinalIgnoreCase));
        }

        //GET api/Users/?username=xx&id=1
        [HttpGet]
        public IEnumerable<Users> GetUserByNameId(string userName, int id)
        {
            string idParam = HttpContext.Current.Request.QueryString["id"];
            string userNameParam = HttpContext.Current.Request.QueryString["userName"];

            return _userList.Where(p => string.Equals(p.UserName, userName, StringComparison.OrdinalIgnoreCase));
        }

        [HttpGet]
        public IEnumerable<Users> GetUserByModel(Users user)//User数据会到请求报文体中查询（因为Get请求，查询不到）
        {
            string idParam = HttpContext.Current.Request.QueryString["id"];
            string userNameParam = HttpContext.Current.Request.QueryString["userName"];
            string emai = HttpContext.Current.Request.QueryString["email"];

            return _userList;
        }

        [HttpGet]
        public IEnumerable<Users> GetUserByModelUri([FromUri]Users user)
        {
            string idParam = HttpContext.Current.Request.QueryString["id"];
            string userNameParam = HttpContext.Current.Request.QueryString["userName"];
            string emai = HttpContext.Current.Request.QueryString["email"];

            return _userList;
        }

        [HttpGet]
        public IEnumerable<Users> GetUserByModelSerialize(string userString)
        {
            Users user = JsonConvert.DeserializeObject<Users>(userString);//反序列化
            return _userList;
        }

        //[HttpGet]
        public IEnumerable<Users> GetUserByModelSerializeWithoutGet(string userString)
        {
            Users user = JsonConvert.DeserializeObject<Users>(userString);
            return _userList;
        }
        /// <summary>
        /// 方法名以Get开头，WebApi会自动默认这个请求就是get请求，而如果你以其他名称开头而又不标注方法的请求方式，那么这个时候服务器虽然找到了这个方法，但是由于请求方式不确定，所以直接返回给你405——方法不被允许的错误。
        /// 最后结论：所有的WebApi方法最好是加上请求的方式（[HttpGet]/[HttpPost]/[HttpPut]/[HttpDelete]），不要偷懒，这样既能防止类似的错误，也有利于方法的维护，别人一看就知道这个方法是什么请求。
        /// </summary>
        /// <param name="userString"></param>
        /// <returns></returns>
        public IEnumerable<Users> NoGetUserByModelSerializeWithoutGet(string userString)
        {
            Users user = JsonConvert.DeserializeObject<Users>(userString);
            return _userList;
        }
        #endregion HttpGet

        #region HttpPost
        //POST api/Users/RegisterNone
        [HttpPost]
        public Users RegisterNone()
        {
            return _userList.FirstOrDefault();
        }

        [HttpPost]
        public Users RegisterNoKey([FromBody]int id)
        {
            string idParam = HttpContext.Current.Request.Form["id"];

            var user = _userList.FirstOrDefault(users => users.UserID == id);
            if (user == null)
            {
                throw new HttpResponseException(HttpStatusCode.NotFound);
            }
            return user;
        }

        //POST api/Users/register
        //只接受一个参数的需要不给key才能拿到
        [HttpPost]
        public Users Register([FromBody]int id)//可以来自FromBody   FromUri
                                               //public Users Register(int id)//可以来自url
        {
            string idParam = HttpContext.Current.Request.Form["id"];

            var user = _userList.FirstOrDefault(users => users.UserID == id);
            if (user == null)
            {
                throw new HttpResponseException(HttpStatusCode.NotFound);
            }
            return user;
        }

        //POST api/Users/RegisterUser
        [HttpPost]
        public Users RegisterUser(Users user)//可以来自FromBody   FromUri
        {
            string idParam = HttpContext.Current.Request.Form["UserID"];
            string nameParam = HttpContext.Current.Request.Form["UserName"];
            string emailParam = HttpContext.Current.Request.Form["UserEmail"];

            //var userContent = base.ControllerContext.Request.Content.ReadAsFormDataAsync().Result;
            var stringContent = base.ControllerContext.Request.Content.ReadAsStringAsync().Result;
            return user;
        }


        //POST api/Users/register
        [HttpPost]
        public string RegisterObject(JObject jData)//可以来自FromBody   FromUri
        {
            string idParam = HttpContext.Current.Request.Form["User[UserID]"];
            string nameParam = HttpContext.Current.Request.Form["User[UserName]"];
            string emailParam = HttpContext.Current.Request.Form["User[UserEmail]"];
            string infoParam = HttpContext.Current.Request.Form["info"];
            dynamic json = jData;
            JObject jUser = json.User;
            string info = json.Info;
            var user = jUser.ToObject<Users>();

            return string.Format("{0}_{1}_{2}_{3}", user.UserID, user.UserName, user.UserEmail, info);
        }

        [HttpPost]
        public string RegisterObjectDynamic(dynamic dynamicData)//可以来自FromBody   FromUri
        {
            string idParam = HttpContext.Current.Request.Form["User[UserID]"];
            string nameParam = HttpContext.Current.Request.Form["User[UserName]"];
            string emailParam = HttpContext.Current.Request.Form["User[UserEmail]"];
            string infoParam = HttpContext.Current.Request.Form["info"];
            dynamic json = dynamicData;
            JObject jUser = json.User;
            string info = json.Info;
            var user = jUser.ToObject<Users>();

            return string.Format("{0}_{1}_{2}_{3}", user.UserID, user.UserName, user.UserEmail, info);
        }
        #endregion HttpPost

        #region HttpPut
        //POST api/Users/RegisterNonePut
        [HttpPut]
        public Users RegisterNonePut()
        {
            return _userList.FirstOrDefault();
        }

        [HttpPut]
        public Users RegisterNoKeyPut([FromBody]int id)
        {
            string idParam = HttpContext.Current.Request.Form["id"];

            var user = _userList.FirstOrDefault(users => users.UserID == id);
            if (user == null)
            {
                throw new HttpResponseException(HttpStatusCode.NotFound);
            }
            return user;
        }

        //POST api/Users/registerPut
        //只接受一个参数的需要不给key才能拿到
        [HttpPut]
        public Users RegisterPut([FromBody]int id)//可以来自FromBody   FromUri
                                                  //public Users Register(int id)//可以来自url
        {
            string idParam = HttpContext.Current.Request.Form["id"];

            var user = _userList.FirstOrDefault(users => users.UserID == id);
            if (user == null)
            {
                throw new HttpResponseException(HttpStatusCode.NotFound);
            }
            return user;
        }

        //POST api/Users/RegisterUserPut
        [HttpPut]
        public Users RegisterUserPut(Users user)//可以来自FromBody   FromUri
        {
            string idParam = HttpContext.Current.Request.Form["UserID"];
            string nameParam = HttpContext.Current.Request.Form["UserName"];
            string emailParam = HttpContext.Current.Request.Form["UserEmail"];

            //var userContent = base.ControllerContext.Request.Content.ReadAsFormDataAsync().Result;
            var stringContent = base.ControllerContext.Request.Content.ReadAsStringAsync().Result;
            return user;
        }


        //POST api/Users/registerPut
        [HttpPut]
        public string RegisterObjectPut(JObject jData)//可以来自FromBody   FromUri
        {
            string idParam = HttpContext.Current.Request.Form["User[UserID]"];
            string nameParam = HttpContext.Current.Request.Form["User[UserName]"];
            string emailParam = HttpContext.Current.Request.Form["User[UserEmail]"];
            string infoParam = HttpContext.Current.Request.Form["info"];
            dynamic json = jData;
            JObject jUser = json.User;
            string info = json.Info;
            var user = jUser.ToObject<Users>();

            return string.Format("{0}_{1}_{2}_{3}", user.UserID, user.UserName, user.UserEmail, info);
        }

        [HttpPut]
        public string RegisterObjectDynamicPut(dynamic dynamicData)//可以来自FromBody   FromUri
        {
            string idParam = HttpContext.Current.Request.Form["User[UserID]"];
            string nameParam = HttpContext.Current.Request.Form["User[UserName]"];
            string emailParam = HttpContext.Current.Request.Form["User[UserEmail]"];
            string infoParam = HttpContext.Current.Request.Form["info"];
            dynamic json = dynamicData;
            JObject jUser = json.User;
            string info = json.Info;
            var user = jUser.ToObject<Users>();

            return string.Format("{0}_{1}_{2}_{3}", user.UserID, user.UserName, user.UserEmail, info);
        }
        #endregion HttpPut

        #region HttpDelete
        //POST api/Users/RegisterNoneDelete
        [HttpDelete]
        public Users RegisterNoneDelete()
        {
            return _userList.FirstOrDefault();
        }

        [HttpDelete]
        public Users RegisterNoKeyDelete([FromBody]int id)
        {
            string idParam = HttpContext.Current.Request.Form["id"];

            var user = _userList.FirstOrDefault(users => users.UserID == id);
            if (user == null)
            {
                throw new HttpResponseException(HttpStatusCode.NotFound);
            }
            return user;
        }

        //POST api/Users/registerDelete
        //只接受一个参数的需要不给key才能拿到
        [HttpDelete]
        public Users RegisterDelete([FromBody]int id)//可以来自FromBody   FromUri
                                                     //public Users Register(int id)//可以来自url
        {
            string idParam = HttpContext.Current.Request.Form["id"];

            var user = _userList.FirstOrDefault(users => users.UserID == id);
            if (user == null)
            {
                throw new HttpResponseException(HttpStatusCode.NotFound);
            }
            return user;
        }

        //POST api/Users/RegisterUserDelete
        [HttpDelete]
        public Users RegisterUserDelete(Users user)//可以来自FromBody   FromUri
        {
            string idParam = HttpContext.Current.Request.Form["UserID"];
            string nameParam = HttpContext.Current.Request.Form["UserName"];
            string emailParam = HttpContext.Current.Request.Form["UserEmail"];

            //var userContent = base.ControllerContext.Request.Content.ReadAsFormDataAsync().Result;
            var stringContent = base.ControllerContext.Request.Content.ReadAsStringAsync().Result;
            return user;
        } 

        //POST api/Users/registerDelete
        [HttpDelete]
        public string RegisterObjectDelete(JObject jData)//可以来自FromBody   FromUri
        {
            string idParam = HttpContext.Current.Request.Form["User[UserID]"];
            string nameParam = HttpContext.Current.Request.Form["User[UserName]"];
            string emailParam = HttpContext.Current.Request.Form["User[UserEmail]"];
            string infoParam = HttpContext.Current.Request.Form["info"];
            dynamic json = jData;
            JObject jUser = json.User;
            string info = json.Info;
            var user = jUser.ToObject<Users>();

            return string.Format("{0}_{1}_{2}_{3}", user.UserID, user.UserName, user.UserEmail, info);
        }

        [HttpDelete]
        public string RegisterObjectDynamicDelete(dynamic dynamicData)//可以来自FromBody   FromUri
        {
            string idParam = HttpContext.Current.Request.Form["User[UserID]"];
            string nameParam = HttpContext.Current.Request.Form["User[UserName]"];
            string emailParam = HttpContext.Current.Request.Form["User[UserEmail]"];
            string infoParam = HttpContext.Current.Request.Form["info"];
            dynamic json = dynamicData;
            JObject jUser = json.User;
            string info = json.Info;
            var user = jUser.ToObject<Users>();

            return string.Format("{0}_{1}_{2}_{3}", user.UserID, user.UserName, user.UserEmail, info);
        }
        #endregion HttpDelete
    }
    #region API权限验证
    /// <summary>
    /// API权限验证
    /// </summary>
    public class BasicAuthorize : AuthorizeAttribute
    {
        public override void OnAuthorization(System.Web.Http.Controllers.HttpActionContext actionContext)
        {
            var authorization = actionContext.Request.Headers.Authorization;

            if (actionContext.ActionDescriptor.GetCustomAttributes<AllowAnonymousAttribute>(true).Count != 0
                || actionContext.ActionDescriptor.ControllerDescriptor.GetCustomAttributes<AllowAnonymousAttribute>(true).Count != 0)
            {
                base.OnAuthorization(actionContext);
            }
            else if (authorization != null && authorization.Parameter != null)
            {
                //用户验证逻辑
                if (ValidateTicket(authorization.Parameter))
                {
                    base.IsAuthorized(actionContext);
                }
                else
                {
                    this.HandleUnauthorizedRequest(actionContext);
                }
            }
            else
            {
                this.HandleUnauthorizedRequest(actionContext);
            }
        }

        protected override void HandleUnauthorizedRequest(System.Web.Http.Controllers.HttpActionContext actionContext)
        {
            var challengeMessage = new System.Net.Http.HttpResponseMessage(System.Net.HttpStatusCode.Unauthorized);//告诉浏览器要验证
            challengeMessage.Headers.Add("WWW-Authenticate", "Basic");//权限信息放在basic
            //throw new System.Web.Http.HttpResponseException(challengeMessage);

            base.HandleUnauthorizedRequest(actionContext);//返回没有授权
        }

        private bool ValidateTicket(string encryptTicket)
        {
            //解密Ticket
            var strTicket = FormsAuthentication.Decrypt(encryptTicket).UserData;
            return string.Equals(strTicket, string.Format("{0}&{1}", "Admin", "123456"));//应该分拆后去数据库验证
        }
    }
    #endregion 
    public class Users
    {
        public int UserID { get; set; }
        public string UserName { get; set; }
        public string UserEmail { get; set; }
    }
}

---

JQ-Ajax前端调用：

<script src="/Scripts/jquery-1.10.2.js"></script>
    <script>
        $(function () {
            var user = { UserID: "11", UserName: "Eleven", UserEmail: "[email protected]" };
            var info = "this is muti model";

            $("#btnGet1").on("click", function () {
                //$.ajax({ url: "/api/users", type: "get", data: { "userName": "Superman" }, success: function (data) { alert(data); }, datatype: "json" });//指向接口，参数匹配的，大小写不区分
                $.ajax({
                    url: "/api/users/GetUserByName", type: "get", data: { "username": "Superman" },
                    beforeSend: function (XHR) {
                        //发送ajax请求之前向http的head里面加入验证信息
                        XHR.setRequestHeader('Authorization', 'BasicAuth ' + ticket);
                    },
                    success: function (data) {
                        alert(data);
                    }, datatype: "json"
                });
            });
            $("#btnGet2").on("click", function () {//单个参数
                $.ajax({ url: "/api/users/GetUserByID", type: "get", data: { "id": $("#txtId").val() }, success: function (data) { alert(data); }, datatype: "json" });
            });
            $("#btnGet3").on("click", function () {//两个参数
                $.ajax({ url: "/api/users/GetUserByNameId", type: "get", data: { "userName": "Superman", "id": $("#txtId").val() }, success: function (data) { alert(data); }, datatype: "json" });
            });
            $("#btnGet4").on("click", function () {//无参数
                $.ajax({ url: "/api/users/Get", type: "get", data: "", success: function (data) { alert(data); }, datatype: "json" });
            });

            $("#btnGet5").on("click", function () {//传递实体 json对象
                $.ajax({ url: "/api/users/GetUserByModel", type: "get", data: user, success: function (data) { alert(data); }, datatype: "json" });
            });
            $("#btnGet6").on("click", function () {//传递实体
                $.ajax({ url: "/api/users/GetUserByModelUri", type: "get", data: user, success: function (data) { alert(data); }, datatype: "json" });
            });
            $("#btnGet7").on("click", function () {//传递实体,序列化后传递
                $.ajax({ url: "/api/users/GetUserByModelSerialize", type: "get", data: { userString: JSON.stringify(user) }, success: function (data) { alert(data); }, datatype: "json" });
            });
            $("#btnGet8").on("click", function () {//传递实体,序列化后传递
                $.ajax({ url: "/api/users/GetUserByModelSerializeWithoutGet", type: "get", data: { userString: JSON.stringify(user) }, success: function (data) { alert(data); }, datatype: "json" });
            });
            $("#btnGet9").on("click", function () {//传递实体,序列化后传递  405 Method Not Allowed    不带httpget需要用get开头
                $.ajax({ url: "/api/users/NoGetUserByModelSerializeWithoutGet", type: "get", data: { userString: JSON.stringify(user) }, success: function (data) { alert(data); }, datatype: "json" });
            });





            $("#btnPost1").on("click", function () {//单个值传递，json数据不要key，这样后台才能获取
                $.ajax({ url: "/api/users/RegisterNoKey", type: "post", data: { "": $("#txtId").val() }, success: function (data) { alert(data); }, datatype: "json" });
            });
            $("#btnPost2").on("click", function () {//key-value形式后台拿不到这个参数，但是可以直接访问Querstringid
                $.ajax({ url: "/api/users/Register", type: "post", data: { "id": $("#txtId").val() }, success: function (data) { alert(data); }, datatype: "json" });
            });
            $("#btnPost3").on("click", function () {//传递json格式的，后台可以用实体接收
                $.ajax({ url: "/api/users/RegisterUser", type: "post", data: user, success: function (data) { alert(data); }, datatype: "json" });
            });

            $("#btnPost4").on("click", function () {//传递json序列化后的格式，后台可以用实体接收,需要指定contentType
                $.ajax({ url: "/api/users/RegisterUser", type: "post", data: JSON.stringify(user), success: function (data) { alert(data); }, datatype: "json", contentType: 'application/json', });
            });

            $("#btnPost5").on("click", function () {//JObject接收  多个参数传递
                $.ajax({ url: "/api/users/RegisterObject", type: "post", data: { "User": user, "Info": info }, success: function (data) { alert(data); }, datatype: "json" });
            });
            $("#btnPost6").on("click", function () {//Dynamic  失败了
                $.ajax({ url: "/api/users/RegisterObjectDynamic", type: "post", data: { "User": user, "Info": info }, success: function (data) { alert(data); }, datatype: "json", contentType: 'application/json' });
            });




            $("#btnPut1").on("click", function () {//单个值传递，json数据不要key，这样后台才能获取
                $.ajax({ url: "/api/users/RegisterNoKeyPut", type: "put", data: { "": $("#txtId").val() }, success: function (data) { alert(data); }, datatype: "json" });
            });
            $("#btnPut2").on("click", function () {//key-value形式后台拿不到
                $.ajax({ url: "/api/users/RegisterPut", type: "put", data: { "id": $("#txtId").val() }, success: function (data) { alert(data); }, datatype: "json" });
            });
            $("#btnPut3").on("click", function () {//传递json格式的，后台可以用实体接收
                $.ajax({ url: "/api/users/RegisterUserPut", type: "put", data: user, success: function (data) { alert(data); }, datatype: "json" });
            });

            $("#btnPut4").on("click", function () {//传递json序列化后的格式，后台可以用实体接收,需要指定contentType
                $.ajax({ url: "/api/users/RegisterUserPut", type: "put", data: JSON.stringify(user), success: function (data) { alert(data); }, datatype: "json", contentType: 'application/json', });
            });

            $("#btnPut5").on("click", function () {//JObject接收
                $.ajax({ url: "/api/users/RegisterObjectPut", type: "put", data: { "User": user, "Info": info }, success: function (data) { alert(data); }, datatype: "json" });
            });
            $("#btnPut6").on("click", function () {//Dynamic  失败了
                $.ajax({ url: "/api/users/RegisterObjectDynamicPut", type: "put", data: { "User": user, "Info": info }, success: function (data) { alert(data); }, datatype: "json", contentType: 'application/json' });
            });

            //delete一样 type换成delete

在此，我们使用了FromUri属性，当发起HTTP GET请求http://localhost:15939/api/hello?ID=2&name=sss&age=19时，Web Api将创建一个Student对象实例，然后从query string中获取id、name和age数据并将数据复制给Student对象实例，这样Web Api将从query string中提取Student实例对象的属性值，而不用去请求主体.