public WechatContext(WechatMsgRequestModel request)
{
Logger.Debug("微信服务器消息：" + JsonConvert.SerializeObject(request));
_securityHelper = new WechatSecurityHelper(request.Msg_Signature, request.Timestamp, request.Nonce);
_requestMessage = _securityHelper.DecryptMsg(request.RequestContent);
Logger.Debug("收到微信消息：" + _requestMessage);
}
public async System.Threading.Tasks.Task <ActionResult> PostAsync([FromQuery] WechatMsgRequestModel model)
{
Logger.LogDebug("request msg:" + model.ToJson());
using (var ms = new MemoryStream())
{
await Request.Body.CopyToAsync(ms);
ms.Seek(0, SeekOrigin.Begin);
using (var reader = new StreamReader(ms, System.Text.Encoding.UTF8))
{
model.RequestContent = await reader.ReadToEndAsync();
Logger.LogDebug("RequestContent from Request:" + model.RequestContent);
}
}
if (string.IsNullOrEmpty(model.RequestContent))
{
return(Content("RequestContent 为空"));
}
var context = new WeChatContext(model);
return(await WechatAsync(context));
}
public void OnAuthorization(AuthorizationFilterContext filterContext)
{
var model = new WechatMsgRequestModel
{
Nonce = filterContext.HttpContext.Request.Query["nonce"].FirstOrDefault(),
Signature = filterContext.HttpContext.Request.Query["signature"].FirstOrDefault(),
Timestamp = filterContext.HttpContext.Request.Query["timestamp"].FirstOrDefault(),
Msg_Signature = filterContext.HttpContext.Request.Query["msg_signature"].FirstOrDefault()
};
//验证
var token = filterContext.HttpContext.Request.Path.Value.ToLower().Contains("/wechatapp/")
? WxAppConsts.Token
: MpWeChatConsts.Token;
if (string.IsNullOrEmpty(token))
{
token = "Reservation";
}
if (!CheckSignature(model, token))
{
filterContext.HttpContext.RequestServices.GetRequiredService <ILogger <WechatRequestValidAttribute> >()
.LogWarning("微信请求签名验证不通过, signature: {Signature}", model.Signature);
filterContext.Result = new ContentResult
{
Content = "微信请求验证失败",
StatusCode = 401,
ContentType = "text/plain;charset=utf-8",
};
}
}
public async System.Threading.Tasks.Task GetAsync([FromQuery] WechatMsgRequestModel model)
{
if (ModelState.IsValid)
{
try
{
var echoStr = HttpContext.Request.Query["echostr"].FirstOrDefault();
if (!string.IsNullOrEmpty(echoStr))
{
await Response.WriteAsync(echoStr, HttpContext.RequestAborted);
}
}
catch (Exception ex)
{
Logger.Error($"Wechat GET 发生异常,异常信息：{ex.Message}", ex);
}
}
}
private static bool CheckSignature(WechatMsgRequestModel model)
{
//获取请求来的参数
var signature = model.Signature;
var timestamp = model.Timestamp;
var nonce = model.Nonce;
//创建数组，将 Token, timestamp, nonce 三个参数加入数组
string[] array = { WeChatConsts.Token, timestamp, nonce };
//进行排序
Array.Sort(array);
//拼接为一个字符串
var tempStr = string.Join("", array);
//对字符串进行 SHA1加密
tempStr = SecurityHelper.SHA1_Encrypt(tempStr);
//判断signature 是否正确
return(tempStr.Equals(signature?.ToUpper()));
}
public ActionResult PostAsync(WechatMsgRequestModel model)
{
if (model.RequestContent == null)
{
using (var reader = new StreamReader(Request.InputStream))
{
Logger.Debug($"Request.InputStream Length:{Request.InputStream.Length}");
model.RequestContent = reader.ReadToEnd();
Logger.Debug($"RequestContent from Request.InputStream:{model.RequestContent}");
}
}
if (string.IsNullOrEmpty(model.RequestContent))
{
return(Content("RequestContent 为空"));
}
var context = new WechatContext(model);
return(Wechat(context));
}
public void Get(WechatMsgRequestModel model)
{
if (ModelState.IsValid)
{
try
{
var echoStr = HttpContext.Request.Query["echostr"].FirstOrDefault();
if (!string.IsNullOrEmpty(echoStr))
{
//将随机生成的 echostr 参数 原样输出
Response.Body.Write(echoStr.GetBytes());
}
}
catch (Exception ex)
{
Logger.Error($"Wechat GET 发生异常,异常信息：{ex.Message}", ex);
}
}
}
public ActionResult PostAsync(WechatMsgRequestModel model)
{
//自定义MessageHandler，对微信请求的详细判断操作都在这里面。
//var postModel = new PostModel
//{
// Nonce = model.Nonce,
// Timestamp = model.Timestamp,
// Signature = model.Signature,
// Msg_Signature = model.Msg_Signature,
// AppId = WeChatConsts.AppId,
// EncodingAESKey = WeChatConsts.AESKey,
// Token = WeChatConsts.Token,
//};
if (model.RequestContent == null)
{
using (var reader = new StreamReader(Request.InputStream))
{
logger.Debug($"Request.InputStream Length:{Request.InputStream.Length}");
model.RequestContent = reader.ReadToEnd();
logger.Debug($"RequestContent from Request.InputStream:{model.RequestContent}");
}
}
if (String.IsNullOrEmpty(model.RequestContent))
{
return(Content("RequestContent 为空"));
}
//var doc = System.Xml.Linq.XDocument.Parse(model.RequestContent);
//logger.Debug("doc:" + doc.ToString());
//var messageHandler = new WechatMsgHandler(doc, postModel);
//#region 设置消息去重
///* 如果需要添加消息去重功能，只需打开OmitRepeatedMessage功能，SDK会自动处理。
// * 收到重复消息通常是因为微信服务器没有及时收到响应，会持续发送2-5条不等的相同内容的RequestMessage
// */
//messageHandler.OmitRepeatedMessage = true;//默认已经开启，此处仅作为演示，也可以设置为false在本次请求中停用此功能
//#endregion
//logger.Debug("收到微信消息：" + Common.ConverterHelper.ObjectToJson(messageHandler.RequestDocument));
//messageHandler.Execute();
//logger.Debug("返回的消息：" + Common.ConverterHelper.ObjectToJson(messageHandler.ResponseDocument));
//return Wechat(messageHandler);
var context = new WechatContext(model);
return(Wechat(context));
}
public void Get(WechatMsgRequestModel model)
{
if (ModelState.IsValid)
{
try
{
var echoStr = HttpContext.Request.QueryString["echostr"];
if (!string.IsNullOrEmpty(echoStr))
{
//将随机生成的 echostr 参数 原样输出
Response.Write(echoStr);
//截止输出流
Response.End();
}
}
catch (Exception ex)
{
Logger.Error($"Wechat GET 发生异常,异常信息：{ex.Message}", ex);
}
}
}
public void OnAuthorization(AuthorizationContext filterContext)
{
var model = new WechatMsgRequestModel
{
Nonce = filterContext.HttpContext.Request.QueryString["nonce"],
Signature = filterContext.HttpContext.Request.QueryString["signature"],
Timestamp = filterContext.HttpContext.Request.QueryString["timestamp"],
Msg_Signature = filterContext.HttpContext.Request.QueryString["msg_signature"]
};
//验证
if (!CheckSignature(model))
{
logger.Error("微信请求签名验证不通过");
filterContext.Result = new ContentResult
{
Content = "微信请求验证失败",
ContentEncoding = Encoding.UTF8,
ContentType = "text/html"
};
}
}
public void OnAuthorization(AuthorizationFilterContext filterContext)
{
var model = new WechatMsgRequestModel
{
Nonce = filterContext.HttpContext.Request.Query["nonce"].FirstOrDefault(),
Signature = filterContext.HttpContext.Request.Query["signature"].FirstOrDefault(),
Timestamp = filterContext.HttpContext.Request.Query["timestamp"].FirstOrDefault(),
Msg_Signature = filterContext.HttpContext.Request.Query["msg_signature"].FirstOrDefault()
};
//验证
if (!CheckSignature(model))
{
Logger.Error("微信请求签名验证不通过");
filterContext.Result = new ContentResult
{
Content = "微信请求验证失败",
StatusCode = 401,
ContentType = "text/html"
};
}
}
public void Get(WechatMsgRequestModel model)
{
if (ModelState.IsValid)
{
try
{
//GET微信验证，获取 echostr 参数并返回
var echoStr = HttpContext.Request.QueryString["echostr"];
if (!string.IsNullOrEmpty(echoStr))
{
//将随机生成的 echostr 参数 原样输出
Response.Write(echoStr);
//截止输出流
Response.End();
}
}
catch (Exception ex)
{
logger.Error("发生异常,异常信息：" + ex.Message + ex.StackTrace);
}
}
}
private bool CheckSignature(WechatMsgRequestModel model)
{
string signature, timestamp, nonce, tempStr;
//获取请求来的参数
signature = model.Signature;
timestamp = model.Timestamp;
nonce = model.Nonce;
//创建数组，将 Token, timestamp, nonce 三个参数加入数组
string[] array = { WeChatConsts.Token, timestamp, nonce };
//进行排序
Array.Sort(array);
//拼接为一个字符串
tempStr = String.Join("", array);
//对字符串进行 SHA1加密
tempStr = SecurityHelper.SHA1_Encrypt(tempStr);
//判断signature 是否正确
if (tempStr.Equals(signature.ToUpperInvariant()))
{
return(true);
}
return(false);
}
public WeChatContext(WechatMsgRequestModel request)
{
_securityHelper = new WechatSecurityHelper(request.Msg_Signature, request.Timestamp, request.Nonce);
_requestMessage = request.RequestContent;
}
