1：[HttpGet]

 ①：get方法之无参数。

     [HttpGet]

        public IHttpActionResult GetStudentInfor()

        {

            List<StudentModel> stlists = new List<StudentModel>();

            stlists.Add(new StudentModel { hno = "", hname = "龙大炳", hobject = "WebApi", hscore = "" });

            stlists.Add(new StudentModel { hno = "", hname = "龙大炳", hobject = "Ajax", hscore = "" });

            stlists.Add(new StudentModel { hno = "", hname = "龙大炳", hobject = "SignalR", hscore = "" });

            return Json<List<StudentModel>>(stlists);

        }

Client,Ajax调用。

function Sumittomain() {


$.ajax({

url: 'http://192.168.0.102/webApiDemo/api/WebApiTest/GetStudentInfor',//'/api/WebAPITest/GetString', 
contentType: 'application/json;charset=utf-8',
type: 'get', ////数据类型必须有 //dataType: "text", 
async: true,//异步 
success: function (data) //成功后的回调方法  
{ alert(JSON.stringify(data))//弹出框 

 alert(JSON.stringify(stuentmodel))//弹出框  
window.location.href = "EasyUILoutMain.aspx";//可以跳转.  
}, 
error: function () { 
alert("失败！"); 
window.location.href = "EasyUILoutMain.aspx";//可以跳转.  } 
}); 
}

②：get方法之基础参数。

        /// <summary>

        /// Get,一个基础参数。

        /// </summary>

        /// <param name="hname"></param>

        /// <returns></returns>

        [HttpGet]

        public IHttpActionResult GetStudentInforBasePara(string hno,string hname)

        {

            List<StudentModel> stlists = new List<StudentModel>();

            stlists.Add(new StudentModel { hno = "1001", hname = "龙大炳", hobject = "WebApi", hscore = "90" });

            stlists.Add(new StudentModel { hno = "1002", hname = "龙大", hobject = "Ajax", hscore = "80" });

            stlists.Add(new StudentModel { hno = "1003", hname = "longdb", hobject = "SignalR", hscore = "88" });

            StudentModel retstu = stlists.FirstOrDefault(stu => stu.hname == hname);

            return Json<StudentModel>(retstu);//, Newtonsoft.Json.JsonSerializer.CreateDefault.stlists);

        }

Client,Ajax调用。

     //get,基础数据做参数。参数放在uri后，或者data中都可以，但最终还是把参数串接在uri中。by ldb 2017.11.13 20:18

     //get请求的数据会附在URL之后（就是把数据放置在HTTP协议头中），而post请求则是放在http协议包的包体中。

     function GetStudentInforBasePara() {

         $.ajax({

             url: 'http://localhost/webApiDemo/api/WebApiTest/GetStudentInforBasePara',//?hno=1001&hname=longdb',

             type: 'get',

             //contentType: 'application/json',//有无都可以。

             data: {hno:"1001",hname: "龙大炳"},//{ hno: "1001", hname: "龙大炳", hobject: "SignalR", hscore: "80" },

             async: true,//异步

             //crossDomain: true,

             success: function (data) //成功后的回调方法

             {

                 alert(JSON.stringify(data))//弹出框

                 window.location.href = "EasyUILoutMain.aspx";//可以跳转.

             },

             error: function () {

                 alert("失败！");

                 //window.location.href = "EasyUILoutMain.aspx";//可以跳转.

             }

         });

     };

③：get方法之实体参数。

        /// <summary>

        /// get,实体参数。[FromUri]加了也取不到Client传过来的参数。

        /// </summary>

        /// <param name="st"></param>

        /// <returns></returns>

        [HttpGet]

        public IHttpActionResult GetStudentInforModelParaUri([FromUri]StudentModel st)

        {

            List<StudentModel> stlists = new List<StudentModel>();

            stlists.Add(new StudentModel { hno = "", hname = "龙大炳", hobject = "WebApi", hscore = "" });

            stlists.Add(new StudentModel { hno = "", hname = "龙大", hobject = "Ajax", hscore = "" });

            stlists.Add(new StudentModel { hno = "", hname = "longdb", hobject = "SignalR", hscore = "" });

            StudentModel retstu = stlists.FirstOrDefault(stu => stu.hname == st.hname);

            return Json<StudentModel>(retstu);//, Newtonsoft.Json.JsonSerializer.CreateDefault.stlists);

        }

Client,Ajax调用。

     //get,实体参数，不报错，但是后台取不到传过去的参数。

     function GetStudentInforModelParaUri() {

         var studentmodel = { hno: "1001", hname: "龙大炳", hobject: "SignalR", hscore: "80" };

         $.ajax({

             url: 'http://localhost/webApiDemo/api/WebApiTest/GetStudentInforModelParaUri',//?hno=1001&hname=longdb',

             type: 'get',

             data: studentmodel,//

             async: true,//异步

             success: function (data) //成功后的回调方法

             {

                 alert(JSON.stringify(data))//弹出框

                 window.location.href = "EasyUILoutMain.aspx";//可以跳转.

             },

             error: function () {

                 alert("失败！");

             }

         });

     };

④：get方法之实体参数转换成JSon。

        /// <summary>

        /// get,实体参数转换成JSon。

        /// </summary>

        /// <param name="st"></param>

        /// <returns></returns>

        [HttpGet]

        public IHttpActionResult GetStudentInforModelParaJSON(string stuJSON)

        {

            //把JSON转换成StudentModel对象。

            StudentModel st = Newtonsoft.Json.JsonConvert.DeserializeObject<StudentModel>(stuJSON);

            List<StudentModel> stlists = new List<StudentModel>();

            stlists.Add(new StudentModel { hno = "", hname = "龙大炳", hobject = "WebApi", hscore = "" });

            stlists.Add(new StudentModel { hno = "", hname = "龙大", hobject = "Ajax", hscore = "" });

            stlists.Add(new StudentModel { hno = "", hname = "longdb", hobject = "SignalR", hscore = "" });

            StudentModel retstu = stlists.FirstOrDefault(stu => stu.hname == st.hname);

            return Json<StudentModel>(retstu);//, Newtonsoft.Json.JsonSerializer.CreateDefault.stlists);

        }

Client，Ajax调用。

     //get,实体先转换成json.成功。

     function GetStudentInforModelParaJSON() {

         var studentmodel = { hno: "", hname: "龙大炳", hobject: "SignalR", hscore: "" };

         $.ajax({

             type: 'get',

             url: 'http://localhost/webApiDemo/api/WebApiTest/GetStudentInforModelParaJSON',

             contentType: "application/json",

             data: { stuJSON: JSON.stringify(studentmodel) },//

             async: true,//异步

             success: function (data) //成功后的回调方法

             {

                 alert(JSON.stringify(data))//弹出框

                 window.location.href = "EasyUILoutMain.aspx";//可以跳转.

             },

             error: function () {

                 alert("失败！");

             }

         });

     };

2:[HttpPost]

①：ApiController中方法参数类型之单个参数。

      /// <summary>

        /// post，一个参数。用[FromBody]去http的请求体里面去取参数。

        /// Client请求成功

        /// </summary>

        /// <param name="hname"></param>

        /// <returns></returns>

        [HttpPost]

        public IHttpActionResult PostStudentInforOnePara([FromBody]string hname)

        {

            List<StudentModel> stlists = new List<StudentModel>();

            stlists.Add(new StudentModel { hno = "", hname = "龙", hobject = "WebApi", hscore = "" });

            stlists.Add(new StudentModel { hno = "", hname = "龙大", hobject = "Ajax", hscore = "" });

            stlists.Add(new StudentModel { hno = "", hname = "longdb", hobject = "SignalR", hscore = "" });

            StudentModel retstu = stlists.FirstOrDefault(stu => stu.hname == hname);

            return  Json<StudentModel>(retstu);//, Newtonsoft.Json.JsonSerializer.CreateDefault.stlists);

        }

Client 中Ajax方式调用：

     //POST WebApi之一个参数的方法。成功

     function SumittomainPostOne() {

         $.ajax({

             url: 'http://192.168.0.102/webApiDemo/api/WebApiTest/PostStudentInforOnePara',

             type: 'post',

             data: { "": "longdb" },//一个参数时，必须这样写，webapi中http的请求体里面去取参数才能取到。

             async: true,//异步

             success: function (data) //成功后的回调方法

             {

                 alert(JSON.stringify(data))//弹出框

                 window.location.href = "EasyUILoutMain.aspx";//可以跳转.

             },

             error: function () {

                 alert("失败！");

                 window.location.href = "EasyUILoutMain.aspx";//可以跳转.

             }

         });

     }

 ②：//post webapi,方法参数之实体类型。

     /// <summary>

        /// post,实体作为参数。

        /// </summary>

        /// <param name="st"></param>

        /// <returns></returns>

        [HttpPost]

        public IHttpActionResult PostStudentInforModel(StudentModel st)

        {

            List<StudentModel> stlists = new List<StudentModel>();

            stlists.Add(new StudentModel { hno = "", hname = "龙", hobject = "WebApi", hscore = "" });

            stlists.Add(new StudentModel { hno = "", hname = "龙大", hobject = "Ajax", hscore = "" });

            stlists.Add(new StudentModel { hno = "", hname = "longdb", hobject = "SignalR", hscore = "" });

            StudentModel retstu = stlists.FirstOrDefault(stu => stu.hname == st.hname);

            return Json<StudentModel>(retstu);//, Newtonsoft.Json.JsonSerializer.CreateDefault.stlists);

        }

Client,Ajax调用api.

     //post webapi,实体类型，能成功，但是参数传不到api中。

     function PostStudentInforModelPara() {

         var studentmodel = { hno: "", hname: "longdb", hobject: "SignalR", hscore: "" };

         $.ajax({

             url: "http://localhost/webApiDemo/api/WebApiTest/PostStudentInforModel",

             type: "post",

             //contentType: "application/json",

             data: studentmodel,

             async: true,//异步

             success: function (data) //成功后的回调方法

             {

                 alert(JSON.stringify(data))//弹出框

                 window.location.href = "EasyUILoutMain.aspx";//可以跳转.

             },

             error: function () {

                 alert("失败！");

                 //window.location.href = "EasyUILoutMain.aspx";//可以跳转.

             }

         });

     };

③：post,方法之数组。

       /// <summary>

        /// post,数组（localhost--成功。ip测试不行，估计是跨域的问题。）。

        /// </summary>

        /// <param name="st"></param>

        /// <returns></returns>

        [HttpPost]

        public IHttpActionResult PostStudentInforArray(string[] st)

        {

            List<StudentModel> stlists = new List<StudentModel>();

            stlists.Add(new StudentModel { hno = "", hname = "龙", hobject = "WebApi", hscore = "" });

            stlists.Add(new StudentModel { hno = "", hname = "龙大", hobject = "Ajax", hscore = "" });

            stlists.Add(new StudentModel { hno = "", hname = "longdb", hobject = "SignalR", hscore = "" });

            StudentModel retstu = stlists.FirstOrDefault(stu => stu.hname == st[]);

            return Json<StudentModel>(retstu);//, Newtonsoft.Json.JsonSerializer.CreateDefault.stlists);

        }

Client,Ajax调用。

     //post webapi,数组类型.localhost情况成功，改成固定ip就不行了，跨域的原因？？

     function PostStudentInforArraryPara() {

         var studentarr = ["1001", "龙大", "SignalR", "80"];

         $.ajax({

             url: 'http://localhost/webApiDemo/api/WebApiTest/PostStudentInforArray',

             type: 'post',

             contentType: 'application/json',

             data: JSON.stringify(studentarr),

             async: true,//异步

             //crossDomain: true,

             success: function (data) //成功后的回调方法

             {

                 alert(JSON.stringify(data))//弹出框

                 window.location.href = "EasyUILoutMain.aspx";//可以跳转.

             },

             error: function () {

                 alert("失败！");

                 //window.location.href = "EasyUILoutMain.aspx";//可以跳转.

             }

         });

     };

④：post方法之集合。

       /// <summary>

        /// 集合。

        /// </summary>

        /// <param name="st"></param>

        /// <returns></returns>

        [HttpPost]

        public IHttpActionResult PostStudentInforList(List<StudentModel> st)

        {

            List<StudentModel> stlists = new List<StudentModel>();

            stlists.Add(new StudentModel { hno = "", hname = "龙", hobject = "WebApi", hscore = "" });

            stlists.Add(new StudentModel { hno = "", hname = "龙大", hobject = "Ajax", hscore = "" });

            stlists.Add(new StudentModel { hno = "", hname = "longdb", hobject = "SignalR", hscore = "" });

            StudentModel retstu = stlists.FirstOrDefault(stu => stu.hname == st[].hname);

            return Json<StudentModel>(retstu);//, Newtonsoft.Json.JsonSerializer.CreateDefault.stlists);

        }

Client,Ajax调用。

     //post webapi,集合。localhost情况成功，改成固定ip就不行了（SCRIPT7002: XMLHttpRequest: 网络错误 0x80070005, 拒绝访问。），跨域的原因？？

     function PostStudentInforListPara() {

         var studentarr = [

                { hno: "1001", hname: "龙", hobject: "SignalR", hscore: "80" },

                { hno: "1001", hname: "龙大", hobject: "SignalR", hscore: "80" },

                { hno: "1001", hname: "longdb", hobject: "SignalR", hscore: "80" }

               ];

         $.ajax({

             url: 'http://localhost/webApiDemo/api/WebApiTest/PostStudentInforList',

             type: 'post',

             contentType: 'application/json',

             data: JSON.stringify(studentarr),

             async: true,//异步

             //crossDomain: true,

             success: function (data) //成功后的回调方法

             {

                 alert(JSON.stringify(data))//弹出框

                 window.location.href = "EasyUILoutMain.aspx";//可以跳转.

             },

             error: function () {

                 alert("失败！");

                 //window.location.href = "EasyUILoutMain.aspx";//可以跳转.

             }

         });

     };

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