/// <summary>
/// 使用默认公众号
/// </summary>
/// <param name="httpContext"></param>
/// <returns></returns>
static async Task WxServerResponse(HttpContext httpContext)
{
if (httpContext.Request.Method.EqualsIgnoreCase("get"))
{
// get请求用于验证
httpContext.Request.Query.TryGetValue("echostr", out var echoStr);
await WriteText(httpContext, echoStr);
return;
}
else
{
try
{
httpContext.Request.Query.TryGetValue("signature", out var signature);
httpContext.Request.Query.TryGetValue("timestamp", out var timestamp);
httpContext.Request.Query.TryGetValue("nonce", out var nonce);
httpContext.Request.Query.TryGetValue("msg_signature", out var msgSignature);
var wxSettings = httpContext.RequestServices.GetRequiredService <IOptions <WxOptions> >().Value;
var wxApiOptions = httpContext.RequestServices.GetRequiredService <IOptions <WxAspNetCoreOptions> >().Value;
var defaultMp = wxSettings.GetDefaultMp();
PostModel postModel = new PostModel
{
Signature = signature,
Timestamp = timestamp,
Nonce = nonce,
Token = defaultMp.Token,
EncodingAESKey = defaultMp.EncodingAESKey,
AppId = defaultMp.AppId,
Msg_Signature = msgSignature
};
if (!CheckSignature.Check(postModel.Signature, postModel.Timestamp, postModel.Nonce,
postModel.Token))
{
await WriteText(httpContext, "success");
return;
}
var messageHandler = new WxMessageHandler(httpContext, httpContext.Request.GetRequestMemoryStream(),
postModel, 10);
await messageHandler.ExecuteAsync(CancellationToken.None);
if (messageHandler.ResponseMessage == null ||
messageHandler.FinalResponseDocument == null ||
messageHandler.ResponseMessage is ResponseMessageNoResponse)
{
await WriteText(httpContext, "success");
return;
}
// 如果请求需要转发
if (messageHandler.ResponseMessage is ResponseRedirect responseRedirect)
{
var url =
$"{(responseRedirect).Host.TrimEnd('/')}{wxApiOptions.WxServerResponse}" +
httpContext.Request.QueryString.Value;
// 这里没有form参数
var body = httpContext.Request.Body.ReadToString();
var res = await HttpHelper.Post(url, body, httpContext.Request.ContentType);
await WriteText(httpContext, res.Content);
return;
}
// 输出xml响应
await WriteText(httpContext, messageHandler.FinalResponseDocument.ToString());
}
catch (Exception ex)
{
var logger = httpContext.RequestServices.GetService <ILoggerFactory>()
.CreateLogger(nameof(WxServerResponse));
logger.LogError(ex, "微信服务器响应错误");
await WriteText(httpContext, "success");
}
}
}