使用C#微信开发服务器配置说明

private string Token = ConfigurationManager.AppSettings["Token"];
 
[HttpGet]
[ActionName("Index")]
public ActionResult Get(string signature, string timestamp, string nonce, string echostr)
{
 if (CheckSignature.Check(signature, timestamp, nonce, Token))
 {
 return Content(echostr);//返回随机字符串则表示验证通过
 }
 else
 {
 return Content("failed:" + signature + "," + CheckSignature.GetSignature(timestamp, nonce, Token) + "。如果你在浏览器中看到这句话，说明此地址可以被作为微信公众账号后台的Url，请注意保持Token一致。");
 }
}
/// <summary>
/// 检查签名是否正确
/// </summary>
/// <param name="signature"></param>
/// <param name="timestamp"></param>
/// <param name="nonce"></param>
/// <param name="token"></param>
/// <returns></returns>
public static bool Check(string signature, string timestamp, string nonce, string token = null)
{
 return signature == GetSignature(timestamp, nonce, token);
}
 
/// <summary>
/// 返回正确的签名
/// </summary>
/// <param name="timestamp"></param>
/// <param name="nonce"></param>
/// <param name="token"></param>
/// <returns></returns>
public static string GetSignature(string timestamp, string nonce, string token = null)
{
 token = token ?? Token;
 var arr = new[] { token, timestamp, nonce }.OrderBy(z => z).ToArray();
 var arrString = string.Join("", arr);
 //var enText = FormsAuthentication.HashPasswordForStoringInConfigFile(arrString, "SHA1");//使用System.Web.Security程序集
 var sha1 = System.Security.Cryptography.SHA1.Create();
 var sha1Arr = sha1.ComputeHash(Encoding.UTF8.GetBytes(arrString));
 StringBuilder enText = new StringBuilder();
 foreach (var b in sha1Arr)
 {
 enText.AppendFormat("{0:x2}", b);
 }
 
 return enText.ToString();
}