请求rest web服务client

RestClient

 using System;
 using System.Globalization;
 using System.IO;
 using System.Net;
 using System.Text;

 [assembly: CLSCompliant(true)]
 namespace Downloader
 {
     public enum HttpVerb
     {
         Get,
         Post,
         Put,
         Delete
     }

     /// <summary>
     /// Restful Service Client
     /// </summary>
     public class RestClient
     {
         /// <summary>
         /// application/json
         /// </summary>
         private string _contentType = "application/json";
         /// <summary>
         /// 15000
         /// </summary>
         private int _timeout = ;
         /// <summary>
         /// Service Uri
         /// </summary>
         public string EndPoint { get; set; }
         /// <summary>
         /// Post || Get
         /// </summary>
         public HttpVerb Method { get; set; }
         /// <summary>
         /// Default "text/xml"
         /// </summary>
         public string ContentType { get { return _contentType; } set { _contentType = value; } }
         /// <summary>
         /// eg. "'test':'abcd'"
         /// </summary>
         public string PostData { get; set; }
         /// <summary>
         /// TimeOut ms
         /// </summary>
         public int Timeout { get { return _timeout; } set { _timeout = value; } }
         /// <summary>
         /// Default Constructor
         /// </summary>
         public RestClient()
         {
             EndPoint = "";
             Method = HttpVerb.Get;
             ContentType = _contentType;
             PostData = "{}";
             Timeout = _timeout;
         }
         /// <summary>
         /// Constructor
         /// </summary>
         /// <param name="endpoint">Service Uri</param>
         public RestClient(string endpoint)
         {
             EndPoint = endpoint;
             Method = HttpVerb.Get;
             ContentType = _contentType;
             PostData = "{}";
             Timeout = _timeout;
         }
         /// <summary>
         /// Constructor
         /// </summary>
         /// <param name="endpoint">Service Uri</param>
         /// <param name="method">Post || Get</param>
         public RestClient(string endpoint, HttpVerb method)
         {
             EndPoint = endpoint;
             Method = method;
             ContentType = _contentType;
             PostData = "{}";
             Timeout = _timeout;
         }
         /// <summary>
         /// Constructor
         /// </summary>
         /// <param name="endpoint">Service Uri</param>
         /// <param name="method">Post || Get</param>
         /// <param name="postData">eg. "{'test':'abcd'}"</param>
         public RestClient(string endpoint, HttpVerb method, string postData)
         {
             EndPoint = endpoint;
             Method = method;
             ContentType = _contentType;
             PostData = postData;
             Timeout = _timeout;
         }
         /// <summary>
         /// Request server
         /// </summary>
         /// <returns></returns>
         public string MakeRequest()
         {
             return MakeRequest("");
         }
         /// <summary>
         /// Request server
         /// </summary>
         /// <param name="parameters">eg. "?q=1234"</param>
         /// <returns></returns>
         public string MakeRequest(string parameters)
         {
             var service = new Uri(EndPoint + parameters);
             var request = WebRequest.Create(service);
             request.Timeout = Timeout;
             request.Method = Method.ToString().ToUpper(CultureInfo.CurrentCulture);
             request.ContentLength = ;
             request.ContentType = ContentType;

             if (Method == HttpVerb.Post)
             {
                 // PostData = "{" + PostData + "}";
                 var bytes =Encoding.UTF8.GetBytes(PostData);
                 request.ContentLength = bytes.Length;

                 using (var writeStream = request.GetRequestStream())
                 {
                     writeStream.Write(bytes, , bytes.Length);
                 }
             }

             using (var response = (HttpWebResponse)request.GetResponse())
             {
                 var responseValue = string.Empty;
                 if (response.StatusCode != HttpStatusCode.OK)
                 {
                     var message = String.Format(CultureInfo.CurrentCulture, "Request failed. Received HTTP {0}", response.StatusCode);
                     throw new WebException(message);
                 }
                 using (var responseStream = response.GetResponseStream())
                 {
                     if (responseStream != null)
                         using (var reader = new StreamReader(responseStream))
                         {
                             responseValue = reader.ReadToEnd();
                         }
                 }
                 return responseValue;
             }
         }
         /// <summary>
         /// 同步更新二进制文件
         /// </summary>
         /// <param name="parameters">URL参数</param>
         /// <param name="postData">表单提交参数</param>
         /// <returns></returns>
         public byte[] MakeRequest(string parameters, string postData)
         {
             var service = new Uri(EndPoint + parameters);
             var request = WebRequest.Create(service);
             request.Timeout = Timeout;
             request.Method = Method.ToString().ToUpper(CultureInfo.CurrentCulture);
             request.ContentLength = ;
             request.ContentType = ContentType;

             if (Method == HttpVerb.Post)
             {
                 // PostData = "{" + postData + "}";
                 var bytes = Encoding.UTF8.GetBytes(PostData);
                 request.ContentLength = bytes.Length;

                 using (var writeStream = request.GetRequestStream())
                 {
                     writeStream.Write(bytes, , bytes.Length);
                 }
             }

             using (var response = (HttpWebResponse)request.GetResponse())
             {
                 if (response.StatusCode != HttpStatusCode.OK)
                 {
                     var message = String.Format(CultureInfo.CurrentCulture, "Request failed. Received HTTP {0}", response.StatusCode);
                     throw new WebException(message);
                 }
                 using (var result = new MemoryStream())
                 {
                     const int bufferLen = ;
                     var buffer = new byte[bufferLen];
                     using (var responseStream = response.GetResponseStream())
                     {
                         var len = responseStream.Read(buffer, , bufferLen);
                         while (len > )
                         {
                             result.Write(buffer, , len);
                             len = responseStream.Read(buffer, , bufferLen);
                         }
                     }
                     return result.ToArray();
                 }
             }
         }

     } 

 }