asp.net开发微信验证消息的实例详解

在MVC Controller所在项目中添加过滤器，在过滤器中重写

public override void OnActionExecuting(ActionExecutingContext filterContext)方法

新建数据模型

注：服务器接收消息时，不再是signature而是msg_signature

微信服务器推送消息到服务器的HTTP请求报文示例

POST /cgi-bin/wxpush? msg_signature=477715d11cdb4164915debcba66cb864d751f3e6&timestamp=1409659813&nonce=1372623149 HTTP/1.1

Host: qy.weixin.qq.com

方法重写，实现对消息的验证

调用微信接入时验证的方法，不过参数需要小改动一下，采用新建的数据模型

在Action方法或在Controller上添加过滤器属性

代码示例

Model

/// <summary>    /// 微信推送消息模型    /// </summary>    public class WeChatMsgRequestModel    {      public string timestamp { get; set; }      public string nonce { get; set; }      public string msg_signature { get; set; }    }

Filter

public class WeChatRequestValidAttribute : ActionFilterAttribute    {      private const string Token = "StupidMe";        public override void OnActionExecuting(ActionExecutingContext filterContext)      {        //参数适配        Model.FormatModel.WeChatMsgRequestModel model = new Model.FormatModel.WeChatMsgRequestModel() { nonce= filterContext.HttpContext.Request.QueryString["nonce"],msg_signature= filterContext.HttpContext.Request.QueryString["msg_signature"],timestamp= filterContext.HttpContext.Request.QueryString["timestamp"] };        //验证        if (CheckSignature(model))        {          base.OnActionExecuting(filterContext);        }            }        private bool CheckSignature(Model.FormatModel.WeChatMsgRequestModel model)      {        string signature, timestamp, nonce, tempStr;        //获取请求来的参数        signature = model.msg_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 = { 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 = FormsAuthentication.HashPasswordForStoringInConfigFile(tempStr, "SHA1").ToLower();        //判断signature 是否正确        if (tempStr.Equals(signature))        {          return true;        }        else        {          return false;        }      }    }

Controller Code

/// <summary>      /// 日志助手      /// </summary>      private static Common.LogHelper logger = new Common.LogHelper(typeof(HomeController));        [Filters.WeChatRequestValid]      public void Valid(Model.FormatModel.WeChatMsgRequestModel model)      {        if (ModelState.IsValid)        {          try          {            //判断是否是POST请求            if (HttpContext.Request.HttpMethod.ToUpper() == "POST")            {              //从请求的数据流中获取请求信息              using (Stream stream = HttpContext.Request.InputStream)              {                byte[] postBytes = new byte[stream.Length];                stream.Read(postBytes, 0, (int)stream.Length);                string postString = System.Text.Encoding.UTF8.GetString(postBytes);                Handle(postString,model);              }            }          }          catch (Exception ex)          {            logger.Error("发生异常,异常信息：" + ex.Message + ex.StackTrace);          }        }      }

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