.NET自动识别HttpWebResponse的编码及是否压缩

 1  　　/// <summary>
 2         /// 获取请求信息（get方式）
 3         /// </summary>
 4         /// <param name="strUrl">请求的地址</param>
 5         /// <returns>请求的结果</returns>
 6         public static string HttpRequestByGet(string strUrl)
 7         {
 8             string html = "";
 9             //拼写请求主体地址
10             string RequestString = strUrl;
11 
12             //生成请求对象
13             HttpWebRequest httprequestPost = (HttpWebRequest)WebRequest.Create(RequestString);
14 
15             //设置请求对象属性
16             httprequestPost.Method = "get";
17             httprequestPost.ContentType = "application/Text/xml";
18             ////生成响应对象
19             HttpWebResponse res = (HttpWebResponse)httprequestPost.GetResponse();
20             ////读取返回数据流（编码格式UFT8）
21             Stream responseStream = null;
22             if ("gzip".Equals(res.ContentEncoding))
23             {
24                 responseStream = new System.IO.Compression.GZipStream(res.GetResponseStream(), System.IO.Compression.CompressionMode.Decompress);
25             }
26             else if ("deflate".Equals(res.ContentEncoding))
27             {
28                 responseStream = new System.IO.Compression.DeflateStream(res.GetResponseStream(), System.IO.Compression.CompressionMode.Decompress);
29             }
30             else
31             {
32                 responseStream = res.GetResponseStream();
33             }
34             if (responseStream != null)
35             {
36                 StreamReader streamReader = new StreamReader(responseStream, Encoding.GetEncoding(res.CharacterSet));
37                 html = streamReader.ReadToEnd().Trim();
38             }
39             //返回结果
40             return html;
41         }