.NET RESTful Web Services入门

　　很早之前看到过RESTful Web Services，并未在意，也没找相关资料进行学习。今天偶尔有一机会，就找了点资料进行研究，发现RESTful真是“简约而不简单”。下面用示例来说明：

1 项目结构

2 REST 服务接口定义

 using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
 using System.ServiceModel;
 using System.ServiceModel.Web;
 namespace Jack_Restful_Service
 {

     [ServiceContract(Name = "RestfulService",Namespace="http://www.cnblogs.com/isaboy")]
     public interface IRestDemoServices
     {
         [OperationContract]
         [WebGet(UriTemplate = Routing.GetClientRoute, BodyStyle = WebMessageBodyStyle.Bare)]
         string GetClientNameById(string Id);

         [OperationContract]
         [WebGet(UriTemplate = Routing.AddClientRoute, BodyStyle = WebMessageBodyStyle.Bare)]
         string Add(string a, string b);
         //error
         //string Add(int a, int b);

         [OperationContract]
         [WebGet(UriTemplate = Routing.LoginClientRoute, BodyStyle = WebMessageBodyStyle.Bare)]
         string Login(string uname, string upwd);

         //post
         [OperationContract]
         [WebInvoke(RequestFormat = WebMessageFormat.Json,
         ResponseFormat = WebMessageFormat.Json,
         BodyStyle = WebMessageBodyStyle.Bare,
         Method = "POST", UriTemplate = "/Client/UpdateUser/{uname}")]
         User UpdateUser(string uname, User newUser);

     }
     //URI路由
     public static class Routing
     {
         public const string GetClientRoute = "/Client/{id}";

         public const string AddClientRoute = "/Client/{a},{b}";
         //{uname}里面的参数名称要和string Login(string uname, string upwd);一致
         public const string LoginClientRoute = "/Client/{uname}__{upwd}";
     }

 }

3 REST服务接口实现

 using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
 using System.ServiceModel;
 using System.ServiceModel.Activation;
 namespace Jack_Restful_Service
 {

     [ServiceBehavior(InstanceContextMode = InstanceContextMode.Single,
         ConcurrencyMode = ConcurrencyMode.Single,
         IncludeExceptionDetailInFaults = true,
         Namespace = "http://www.cnblogs.com/isaboy")]
     [AspNetCompatibilityRequirements(RequirementsMode = AspNetCompatibilityRequirementsMode.Allowed)]
     public class RestDemoServices : IRestDemoServices
     {
         //GET
         public string GetClientNameById(string Id)
         {
             string ReturnString = "Your id is: " + Id;

             return ReturnString;
         }

         public string Add(string a, string b)
         {
             int sum = int.Parse(a) + int.Parse(b);
             return sum.ToString();
         }

         public string Login(string uname, string upwd)
         {
             if (uname == "admin" && upwd == "admin")
             {
                 return "success";
             }
             else
             {
                 return "false";
             }
         }
         //POST
         public User UpdateUser(string uname, User newUser)
         {
             return newUser;
         }
     }

 }

4 将服务HOST

  Console.WriteLine("----------Restful Service Start--------------");
  RestDemoServices demoServices = new RestDemoServices();
  WebServiceHost _serviceHost = new WebServiceHost(demoServices, new Uri("http://localhost:8000/RestfulService"));
   _serviceHost.Open();
   Console.WriteLine("----------Restful Service Opened--------------");
   Console.WriteLine("http://localhost:8000/RestfulService/Client/8");
   Console.WriteLine("http://localhost:8000/RestfulService/Client/2,5");
   Console.WriteLine("http://localhost:8000/RestfulService/Client/admin__admin");

5 打开浏览器，即可进行资源访问

另外，我们可以用代码进行测试

 using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
 using System.Web;
 using System.Net;
 using System.IO;
 namespace PostServiceTest
 {
     class Program
     {
         static void Main(string[] args)
         {
             //get
             HttpWebRequest request = (HttpWebRequest)WebRequest.Create("http://localhost:8000/RestfulService/Client/8");
             WebResponse response = request.GetResponse();
             string result = new StreamReader(response.GetResponseStream()).ReadToEnd();
             Console.WriteLine(result);

             //post
             string requestData = "{\"uname\":\"admin\",\"upwd\":\"admin\"}";
             byte[] data = Encoding.UTF8.GetBytes(requestData);
             request = (HttpWebRequest)WebRequest.Create("http://localhost:8000/RestfulService/Client/UpdateUser/admin");
             request.Method = "POST";
             request.ContentType = "application/json";
             Stream dataStream = request.GetRequestStream();
             dataStream.Write(data, , data.Length);
             dataStream.Close();

             response = request.GetResponse();
             result = new StreamReader(response.GetResponseStream()).ReadToEnd();
             Console.WriteLine(result);
             Console.ReadKey();
         }
     }
 }