WebApi一个控制器中定义多个Get方法。

问题：怎样解决一个ApiController中定义多个Get方法或者Post方法？

答：要想实现一个ApiController中定义多个Get方法或者Post方法，则需要在WebApiConfig类中的Register（）中自定义路由规则，规则中显示指定action。

示例：

       // Web API 路由
            config.MapHttpAttributeRoutes();

            //自定义指定action的路由。2017.11.11 14:56 added by longdb
            config.Routes.MapHttpRoute(
                 name: "WebApiTest",
                 routeTemplate: "api/{controller}/{action}/{id}",
                 defaults: new { id = RouteParameter.Optional }
             );

            //默认路由规则。
            //config.Routes.MapHttpRoute(
            //    name: "WebApiTest",
            //    routeTemplate: "api/{controller}/{id}",
            //    defaults: new { id = RouteParameter.Optional }
            //);

ApiController中两个Get方法：

 public class WebApiTestController : ApiController
    {
        [HttpGet]
        public string GetString()
        {

            string sql = @"SELECT TOP 10 0 cnt, '1' ck,no,name,object,score,id FROM dbo.infor 
                WHERE id  IN(SELECT TOP 10 id FROM dbo.infor ORDER BY id)
                UNION ALL
                SELECT COUNT(id) cnt,'1' ck,'' no, '' name,'' object,'' score,'' id FROM dbo.infor";
            DataTable dt = DBHelper.DBExecuteByAdapter(sql);
            return JSONInterFace.DataTableToJsonWithJsonNet(dt);//.Rows.Count.ToString();

        }

        [HttpGet]
        public IHttpActionResult GetStudentInfor()
        {
            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 = "龙大炳", hobject = "Ajax", hscore = "80" });
            stlists.Add(new StudentModel { hno = "1003", hname = "龙大炳", hobject = "SignalR", hscore = "88" });
            return Json<List<StudentModel>>(stlists);//, Newtonsoft.Json.JsonSerializer.CreateDefault.stlists);
        }

    }

注意点：不能定义重复名称的路由，路由名称必须唯一。