C#通過WebClient/HttpWebRequest實現http的POST/GET方法，
/// <summary>
///body是要傳遞的參數,格式"roleId=1&uid=2"
///post的cotentType填寫"application/x-www-form-urlencoded"
///soap填寫:"text/xml; charset=utf-8"
/// </summary>
public static string PostHttp(string url, string body, string contentType)
{
HttpWebRequest httpWebRequest = (HttpWebRequest)WebRequest.Create(url);
httpWebRequest.ContentType = contentType;
httpWebRequest.Method = "POST";
httpWebRequest.Timeout = 20000;
byte[] btBodys = Encoding.UTF8.GetBytes(body);
httpWebRequest.ContentLength = btBodys.Length;
httpWebRequest.GetRequestStream().Write(btBodys, 0, btBodys.Length);
HttpWebResponse httpWebResponse = (HttpWebResponse)httpWebRequest.GetResponse();
StreamReader streamReader = new StreamReader(httpWebResponse.GetResponseStream());
string responseContent = streamReader.ReadToEnd();
httpWebResponse.Close();
streamReader.Close();
httpWebRequest.Abort();
httpWebResponse.Close();
return responseContent;
}
1 /// <summary>
2 /// 通過WebClient類Post數據到遠程地址，需要Basic認證；
3 /// 調用端自己處理異常
4 /// </summary>
5 /// <param name="uri"></param>
6 /// <param name="paramStr">name=張三&age=20</param>
7 /// <param name="encoding">請先確認目標網頁的編碼方式</param>
8 /// <param name="username"></param>
9 /// <param name="password"></param>
10 /// <returns></returns>
11 public static string Request_WebClient(string uri, string paramStr, Encoding encoding, string username, string password)
12 {
13 if (encoding == null)
14 encoding = Encoding.UTF8;
15
16 string result = string.Empty;
17
18 WebClient wc = new WebClient();
19
20 // 采取POST方式必須加的Header
21 wc.Headers.Add("Content-Type", "application/x-www-form-urlencoded");
22
23 byte[] postData = encoding.GetBytes(paramStr);
24
25 if (!string.IsNullOrEmpty(username) && !string.IsNullOrEmpty(password))
26 {
27 wc.Credentials = GetCredentialCache(uri, username, password);
28 wc.Headers.Add("Authorization", GetAuthorization(username, password));
29 }
30
31 byte[] responseData = wc.UploadData(uri, "POST", postData); // 得到返回字符流
32 return encoding.GetString(responseData);// 解碼
33 }
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1 public static string GetHttp(string url, HttpContext httpContext)
2 {
3 string queryString = "?";
4
5 foreach (string key in httpContext.Request.QueryString.AllKeys)
6 {
7 queryString += key + "=" + httpContext.Request.QueryString[key] + "&";
8 }
9
10 queryString = queryString.Substring(0, queryString.Length - 1);
11
12 HttpWebRequest httpWebRequest = (HttpWebRequest)WebRequest.Create(url + queryString);
13
14 httpWebRequest.ContentType = "application/json";
15 httpWebRequest.Method = "GET";
16 httpWebRequest.Timeout = 20000;
17
18 //byte[] btBodys = Encoding.UTF8.GetBytes(body);
19 //httpWebRequest.ContentLength = btBodys.Length;
20 //httpWebRequest.GetRequestStream().Write(btBodys, 0, btBodys.Length);
21
22 HttpWebResponse httpWebResponse = (HttpWebResponse)httpWebRequest.GetResponse();
23 StreamReader streamReader = new StreamReader(httpWebResponse.GetResponseStream());
24 string responseContent = streamReader.ReadToEnd();
25
26 httpWebResponse.Close();
27 streamReader.Close();
28
29 return responseContent;
30 }
HttpWebRequest(GET)
1 /// <summary>
2 /// 通過 WebRequest/WebResponse 類訪問遠程地址並返回結果，需要Basic認證；
3 /// 調用端自己處理異常
4 /// </summary>
5 /// <param name="uri"></param>
6 /// <param name="timeout">訪問超時時間，單位毫秒；如果不設置超時時間，傳入0</param>
7 /// <param name="encoding">如果不知道具體的編碼，傳入null</param>
8 /// <param name="username"></param>
9 /// <param name="password"></param>
10 /// <returns></returns>
11 public static string Request_WebRequest(string uri, int timeout, Encoding encoding, string username, string password)
12 {
13 string result = string.Empty;
14
15 WebRequest request = WebRequest.Create(new Uri(uri));
16
17 if (!string.IsNullOrEmpty(username) && !string.IsNullOrEmpty(password))
18 {
19 request.Credentials = GetCredentialCache(uri, username, password);
20 request.Headers.Add("Authorization", GetAuthorization(username, password));
21 }
22
23 if (timeout > 0)
24 request.Timeout = timeout;
25
26 WebResponse response = request.GetResponse();
27 Stream stream = response.GetResponseStream();
28 StreamReader sr = encoding == null ? new StreamReader(stream) : new StreamReader(stream, encoding);
29
30 result = sr.ReadToEnd();
31
32 sr.Close();
33 stream.Close();
34
35 return result;
36 }
37
38 #region # 生成 Http Basic 訪問憑證 #
39
40 private static CredentialCache GetCredentialCache(string uri, string username, string password)
41 {
42 string authorization = string.Format("{0}:{1}", username, password);
43
44 CredentialCache credCache = new CredentialCache();
45 credCache.Add(new Uri(uri), "Basic", new NetworkCredential(username, password));
46
47 return credCache;
48 }
49
50 private static string GetAuthorization(string username, string password)
51 {
52 string authorization = string.Format("{0}:{1}", username, password);
53
54 return "Basic " + Convert.ToBase64String(new ASCIIEncoding().GetBytes(authorization));
55 }
56
57 #endregion
