.net开发微信公众号（2）-验证服务器地址

1 //接受微信服务端发来的消息
2 public void Service()
3 {
4         Valid();
5 }    

 1         //用于申请“成为开发者”时向微信发送验证信息。
 2         public void Valid()  
 3         {
 4             string echoStr = Request.QueryString["echoStr"];
 5             if (string.IsNullOrEmpty(echoStr))
 6             {
 7                 WeLogger.Debug("echoStr为空");
 8                 return;
 9             }
10             string signature = Request.QueryString["signature"];
11             string timestamp = Request.QueryString["timestamp"];
12             string nonce = Request.QueryString["nonce"];
13             if (WeUtility.CheckSignature(signature,timestamp,nonce))
14             {
15                 if (!string.IsNullOrEmpty(echoStr))
16                 {
17 WeLogger.Info("echoStr值为：" + echoStr);
18 Response.Write(echoStr);
19 Response.End();
20 
21                 }
22             }
23         }

 1 public static bool CheckSignature(string signature, string timestamp, string nonce)
 2         {
 3             if (string.IsNullOrEmpty(signature) || string.IsNullOrEmpty(timestamp) || string.IsNullOrEmpty(nonce))
 4             {
 5                 return false;
 6             }
 7             //这个变量要与网页里面填写的接口配置信息中填写的Token一致
 8             string Token = WeConst.Token;
 9             string[] ArrTmp = { Token, timestamp, nonce };
10             Array.Sort(ArrTmp);//排序
11             string tmpStr = string.Join("", ArrTmp);
12             tmpStr = UtilityFunc.SHA1_Hash(tmpStr);//对该字符串进行sha1加密
13             tmpStr = tmpStr.ToLower();
14 
15             //获得加密后的字符串可与signature对比
16             //通过检验signature对请求进行校验，若正确，则原样返回echostr参数内容，接入生效，否则接入失败
17             if (tmpStr == signature)
18             {
19                 return true;
20             }
21             else
22             {
23                 return false;
24             }
25         }

 1         /// <summary>
 2         /// 字符串转换SHA1
 3         /// </summary>
 4         /// <param name="str_sha1_in"></param>
 5         /// <returns></returns>
 6         public static string SHA1_Hash(string str_sha1_in)
 7         {
 8             SHA1 sha1 = new SHA1CryptoServiceProvider();
 9             byte[] bytes_sha1_in = UTF8Encoding.Default.GetBytes(str_sha1_in);
10             byte[] bytes_sha1_out = sha1.ComputeHash(bytes_sha1_in);
11             string str_sha1_out = BitConverter.ToString(bytes_sha1_out);
12             str_sha1_out = str_sha1_out.Replace("-", "");
13             return str_sha1_out;
14         }