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(shù)據(jù)模型
![](/d/20211017/5af48c95cc4e61cc362b8c00a9c12572.gif)
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=477715d11cdb4164915debcba66cb864d751f3e6timestamp=1409659813nonce=1372623149 HTTP/1.1
Host: qy.weixin.qq.com
方法重寫,實現(xiàn)對消息的驗證
調(diào)用微信接入時驗證的方法,不過參數(shù)需要小改動一下,采用新建的數(shù)據(jù)模型
![](/d/20211017/75bbe6fb4da2a4d116697a17382ccee6.gif)
![](/d/20211017/68750f52930357cbe76002dee380036a.gif)
在Action方法或在Controller上添加過濾器屬性
![](/d/20211017/dece099bf369ee8f027e7212409fb510.gif)
代碼示例
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)
{
//參數(shù)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(shù)
signature = model.msg_signature;
timestamp = model.timest
nonce = model.nonce;
//創(chuàng)建數(shù)組,將 Token, timestamp, nonce 三個參數(shù)加入數(shù)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
/// 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(shù)據(jù)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(fā)生異常,異常信息:" + ex.Message + ex.StackTrace);
}
}
}
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