/// <summary>
/// Initializes a <see cref="WeixinMessageEventReceivedContext"/>
/// </summary>
/// <param name="context">The HTTP environment</param>
/// <param name="options">The options for Weixin</param>
/// <param name="sender">The sender respective for <see cref="MessageHandler{TC}}"/></param>
/// <param name="args"><see cref="TEventArgs"/></param>
public WeixinReceivedContext(
WeixinMessageHandler sender,
TEventArgs args,
bool needEncrypt)
{
Sender = sender;
Args = args;
NeedEncrypt = needEncrypt;
}
/// <summary>
/// 微信公众号消息接收地址
/// </summary>
/// <param name="context"></param>
/// <returns></returns>
public async Task InvokePost(HttpContext context)
{
HttpRequest request = context.Request;
var signature = request.Query["signature"];
var timestamp = request.Query["timestamp"];
var nonce = request.Query["nonce"];
var websiteToken = _options.WebsiteToken;
//context.Response.Clear();
context.Response.ContentType = "text/plain;charset=utf-8";
if (!SignatureHelper.ValidateSignature(signature, timestamp, nonce, websiteToken) && !_options.Debug)
{
var result = "这是一个微信程序，请用微信客户端访问!";
await context.Response.WriteAsync(result);
return;
}
var messageHandler = new WeixinMessageHandler();
try
{
var result = await messageHandler.InitializeAsync(_options, context, _logger, _encryptor);
//var result = await messageHandler.HandleAsync();
//if (!result)
//{
// await _next(context);
//}
}
catch (Exception ex)
{
_logger.LogError(0, ex, "处理POST报文时发生异常");
}
finally
{
try { await messageHandler.TeardownAsync(); }
catch (Exception)
{
// Don't mask the original exception, if any
}
}
}