/// <summary>
/// 异常响应处理
/// </summary>
/// <param name="context"></param>
/// <param name="res"></param>
/// <param name="mode"></param>
/// <returns></returns>
private static async Task ExceptionResponse(HttpContext context, Resp res, AppSourceMode mode)
{
if (mode == AppSourceMode.Browser &&
!AppWebInfoHelper.CheckIf404OrErrorUrl(context.Request.Path.ToString()))
{
var errUrl = res.IsRespType(RespTypes.ObjectNull) ? AppWebInfoHelper.NotFoundUrl : AppWebInfoHelper.ErrorUrl;
if (!string.IsNullOrEmpty(errUrl))
{
string url = string.Concat(errUrl, "?ret=", res.ret, "&msg=", errUrl.UrlEncode());
context.Response.Redirect(url);
return;
}
}
await ResponseJsonError(context.Response, res);
}
/// <summary>
/// 处理方法
/// </summary>
/// <param name="context"></param>
/// <returns></returns>
public override async Task Invoke(HttpContext context)
{
Exception error;
Resp errorResp = null;
AppSourceMode mode = AppSourceMode.BrowserWithHeader;
try
{
// 需要在此初始化，否则中间件依次退出后此值为空，下方异常无法捕获APP信息
var appInfo = AppWebInfoHelper.GetOrSetAppIdentity(context);
mode = appInfo.SourceMode;
await _next.Invoke(context);
if (context.Response.StatusCode == (int)HttpStatusCode.NotFound)
{
await ExceptionResponse(context, new Resp(RespTypes.ObjectNull, "当前请求资源不存在！"), mode);
}
return;
}
catch (RespException resEx)
{
errorResp = new Resp().WithException(resEx);
error = resEx;
}
catch (Exception ex)
{
error = ex;
}
var code = LogHelper.Error(string.Concat("请求地址:", context.Request.Path, "错误信息：", error.Message, "详细信息：", error.StackTrace),
nameof(ExceptionMiddleware));
#if DEBUG
if (error != null)
{
throw error;
}
#endif
var res = errorResp ?? new Resp(RespTypes.InnerError, string.Concat("服务暂时不可用！详情错误码：", code));
await ExceptionResponse(context, res, mode);
}
