using System;
using System.IO;
using System.Net;
using System.Text;public enum HttpVerb
{GET,            //method  常用的就这几样，当然你也可以添加其他的   get：获取    post：修改    put：写入    delete：删除POST,PUT,DELETE
}namespace HttpUtils
{public class RestClient{public string EndPoint { get; set; }    //请求的url地址  eg：   http://215.23.12.45:8080/order/order_id=1&isdel=0public HttpVerb Method { get; set; }    //请求的方法public string ContentType { get; set; } //格式类型：我用的是application/json，text/xml具体使用什么，看需求吧public string PostData { get; set; }    //传送的数据，当然了我使用的是json字符串public RestClient(){EndPoint = "";Method = HttpVerb.GET;ContentType = "application/json";PostData = "";}public RestClient(string endpoint){EndPoint = endpoint;Method = HttpVerb.GET;ContentType = "application/json";PostData = "";}public RestClient(string endpoint, HttpVerb method){EndPoint = endpoint;Method = method;ContentType = "application/json";PostData = "";}public RestClient(string endpoint, HttpVerb method, string postData){EndPoint = endpoint;Method = method;ContentType = "application/json";PostData = postData;}public string MakeRequest(){return MakeRequest("");}public string MakeRequest(string parameters){var request = (HttpWebRequest)WebRequest.Create(EndPoint + parameters);request.Method = Method.ToString();request.ContentLength = 0;request.ContentType = ContentType;if (!string.IsNullOrEmpty(PostData) && Method == HttpVerb.POST)//如果传送的数据不为空，并且方法是post{var encoding = new UTF8Encoding();var bytes = Encoding.GetEncoding("iso-8859-1").GetBytes(PostData);//编码方式按自己需求进行更改，我在项目中使用的是UTF-8request.ContentLength = bytes.Length;using (var writeStream = request.GetRequestStream()){writeStream.Write(bytes, 0, bytes.Length);}}if (!string.IsNullOrEmpty(PostData) && Method == HttpVerb.PUT)//如果传送的数据不为空，并且方法是put{var encoding = new UTF8Encoding();var bytes = Encoding.GetEncoding("iso-8859-1").GetBytes(PostData);//编码方式按自己需求进行更改，我在项目中使用的是UTF-8request.ContentLength = bytes.Length;using (var writeStream = request.GetRequestStream()){writeStream.Write(bytes, 0, bytes.Length);}}using (var response = (HttpWebResponse)request.GetResponse()){var responseValue = string.Empty;if (response.StatusCode != HttpStatusCode.OK){var message = String.Format("Request failed. Received HTTP {0}", response.StatusCode);throw new ApplicationException(message);}// grab the responseusing (var responseStream = response.GetResponseStream()){if (responseStream != null)using (var reader = new StreamReader(responseStream)){responseValue = reader.ReadToEnd();}}return responseValue;}}} // class}