驗證消息的真實性
在MVC Controller所在項目中添加過濾器，在過濾器中重寫
public override void OnActionExecuting(ActionExecutingContext filterContext)方法
新建數據模型
注：服務器接收消息時，不再是signature而是msg_signature
微信服務器推送消息到服務器的HTTP請求報文示例
POST /cgi-bin/wxpush? msg_signature=477715d11cdb4164915debcba66cb864d751f3e6×tamp=1409659813&nonce=1372623149 HTTP/1.1
Host: qy.weixin.qq.com
方法重寫，實現對消息的驗證
調用微信接入時驗證的方法，不過參數需要小改動一下，采用新建的數據模型
在Action方法或在Controller上添加過濾器屬性
代碼示例
Model
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/// <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
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public class WeChatRequestValidAttribute : ActionFilterAttribute { private const string Token = "StupidMe"; public override void OnActionExecuting(ActionExecutingContext filterContext) { //參數適配 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"] }; //驗證 if (CheckSignature(model)) { base.OnActionExecuting(filterContext); } } private bool CheckSignature(Model.FormatModel.WeChatMsgRequestModel model) { string signature, timestamp, nonce, tempStr; //獲取請求來的參數 signature = model.msg_signature; timestamp = model.timestamp; nonce = model.nonce; //創建數組，將 Token, timestamp, nonce 三個參數加入數組 string[] array = { Token, timestamp, nonce }; //進行排序 Array.Sort(array); //拼接為一個字符串 tempStr = String.Join("", array); //對字符串進行 SHA1加密 tempStr = FormsAuthentication.HashPasswordForStoringInConfigFile(tempStr, "SHA1").ToLower(); //判斷signature 是否正確 if (tempStr.Equals(signature)) { return true; } else { return false; } } } |
Controller Code
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/// <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 { //判斷是否是POST請求 if (HttpContext.Request.HttpMethod.ToUpper() == "POST") { //從請求的數據流中獲取請求信息 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("發生異常,異常信息：" + ex.Message + ex.StackTrace); } } } |
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