/// <summary>
/// 获取公众号的AccessToken
/// </summary>
/// <returns>微信提供的AccessToken</returns>
public string GetAccessToken()
{
if (WeChatConfig == null)
{
throw new NullReferenceException("请使用构造ConnectLinkUp(idOrAppId)，或初始化Initialize(idOrAppId)");
}
string accessToken = String.Empty;
//先从数据库获取Access_Token，如果不存在或已过期，则重新跟微信拿Access_Token
string appId = WeChatConfig.AppID;
string accessTokenKey = string.Format(RedisKeyPrefix.WECHAT_ACCESS_TOKEN, appId);
string updateTokenKey = string.Format(RedisKeyPrefix.WECHAT_TOKEN_CONCURRENT, appId);
do
{
if ("Concurrent".Equals(accessToken))
{
SystemLogHelper.Info(MethodBase.GetCurrentMethod(), "GetAccessToken(),已有线程直接去微信获取AccessToken，在此等待");
Thread.Sleep(500);//发生并发的线程需要回到这里，等待单线程更新完成
}
AccessToken wechatAccessToken = redisHelper.StringGet <AccessToken>(accessTokenKey);
if (wechatAccessToken != null)
{
accessToken = wechatAccessToken.access_token;
}
else//Redis里面的Token已经失效，需要单线程去更新Token
{
accessToken = ConcurrentControl.SingleUserFunc(updateTokenKey, "Concurrent", () =>
{
SystemLogHelper.Info(MethodBase.GetCurrentMethod(), "获取公众号的AccessToken,GetAccessToken(),直接去微信获取AccessToken");
return(GetWeChatAccessToken());
});
}
} while ("Concurrent".Equals(accessToken));
return(accessToken);
}
/// <summary>
/// 正式写入日志到Redis
/// </summary>
/// <typeparam name="TState">泛型</typeparam>
/// <param name="logLevel">日志等级</param>
/// <param name="eventId">日志触发事件</param>
/// <param name="state">泛型实体</param>
/// <param name="exception">异常信息</param>
/// <param name="formatter">格式化处理</param>
public void Log <TState>(LogLevel logLevel, EventId eventId, TState state, Exception exception, Func <TState, Exception, string> formatter)
{
if (!IsEnabled(logLevel))
{
return;
}
var msg = $"日志触发ID：{eventId.Id}，日志名：{eventId.Name}，具体》》" + formatter(state, exception);
switch (logLevel)
{
case LogLevel.Trace:
case LogLevel.Debug:
SystemLogHelper.Debug(moduleName, msg, exception);
break;
case LogLevel.Information:
SystemLogHelper.Info(moduleName, msg, exception);
break;
case LogLevel.Warning:
SystemLogHelper.Warn(moduleName, msg, exception);
break;
case LogLevel.Error:
SystemLogHelper.Error(moduleName, msg, exception);
break;
case LogLevel.Critical:
SystemLogHelper.Fatal(moduleName, msg, exception);
break;
default: break;
}
}
/// <summary>
/// 对微信推送过来的消息进行解密
/// </summary>
/// <param name="request">推送过来的请求</param>
/// <returns>解密后的xml明文</returns>
private string MessageDecrypt(WeChatEncryptMsg requestEncryptMsg)
{
//string signature = request.QueryString["signature"];
//string timestamp = request.QueryString["timestamp"];
//string nonce = request.QueryString["nonce"];
//string openid = request.QueryString["openid"];
//string encrypt_type = request.QueryString["encrypt_type"];//aes
//string msg_signature = request.QueryString["msg_signature"];
var stream = requestEncryptMsg.Body; //具体消息数据在请求流里面
StreamReader reader = new StreamReader(stream);
string ciphertext = reader.ReadToEnd(); //密文消息
reader.Close();
string xmlMsgTxt = null; //解析之后的明文
if (ciphertext.Contains("<Encrypt>") && ciphertext.Contains("</Encrypt>"))
{
int result = wxcpt.DecryptMsg(requestEncryptMsg.MsgSignature,
requestEncryptMsg.Timestamp, requestEncryptMsg.Nonce, ciphertext, ref xmlMsgTxt);
SystemLogHelper.Info(GetType().FullName, "消息解密处理结果：" + CryptResult(result));
weChatConfig.EnCrypt = true;//确实启用了加密方式
}
else
{
xmlMsgTxt = ciphertext;
weChatConfig.EnCrypt = false;//并没有启用加密方式
}
return(xmlMsgTxt);
}
/// <summary>
/// 输出Info的日志提示
/// </summary>
/// <param name="message">日志提示消息</param>
/// <param name="exception">可指定发生的异常对象</param>
/// <param name="isWriteLog">是否需要记录到系统日志，默认需要</param>
public void Info(string message, Exception exception = null, bool isWriteLog = true)
{
showLog(message + exception?.GetExceptionMsg()
+ $"---{DateTime.Now} ThreadId：{Thread.CurrentThread.ManagedThreadId}\r\n", Color.Green);
if (isWriteLog)
{
SystemLogHelper.Info(MethodBase.GetCurrentMethod(), message, exception);
}
}
/// <summary>
/// 以推送过来请求中的随机字符串、时间戳为基础进行响应消息加密
/// </summary>
/// <param name="xmlMsgTxt">要加密的明文</param>
/// <returns>加密后的密文</returns>
private string MessageEncrypt(string xmlMsgTxt)
{
string timestamp = TimeHelper.GetTime(DateTime.Now).ToString();
string nonce = StringHelper.RandomStr(StrType.NumAndLowercase, 16);
string sEncryptMsg = null; //xml格式的密文
int result = wxcpt.EncryptMsg(xmlMsgTxt, timestamp, nonce, ref sEncryptMsg);
SystemLogHelper.Info(GetType().FullName, "消息加密处理结果：" + CryptResult(result));
return(sEncryptMsg);
}
public IActionResult Index(string id)
{
string signature = Request.Query["signature"];
string timestamp = Request.Query["timestamp"];
string nonce = Request.Query["nonce"];
SystemLogHelper.Info(GetType().FullName, $"微信公众号接入参数：signature={signature},timestamp={timestamp},nonce={nonce}");
//RedisHelper redisHelper = new RedisHelper();
//string readyAppId = redisHelper.StringGet(RedisKeyPrefix.WECHAT_CONNECT_READY);
connectLinkUp.Initialize(id);//确定公众号
if (connectLinkUp.CheckSignature(signature, timestamp, nonce))
{
SystemLogHelper.Info(GetType().FullName, $"匹配微信公众号AppId：{id}");
return(Content(Request.Query["echostr"]));
}
return(Json(new ResultEntity <object>(ResultCode.SUCCESS, new { signature, timestamp, nonce })));
}