Asp.Net Core Razor Pages 异常处理中断应用程序

Question

我正在构建一个 Asp.Net Core 2.2 Razor Pages 应用程序。我正在编写一个全局异常处理以避免在许多地方出现 try catch 块。我关注了文章 -异常处理参考

这是演示解决方案链接

这是我的代码，

在Startup.cs中

if(env.IsDevelopment())

{

    //app.UseDeveloperExceptionPage(new DeveloperExceptionPageOptions {

    //    SourceCodeLineCount = 2

    //});

    //app.UseDatabaseErrorPage();

    app.UseExceptionHandler("/Error");

    app.UseStatusCodePagesWithReExecute("/Error/{0}");

    app.UseExceptionMiddleware();

} else {...}

在ExceptionMiddleware.cs中

public ExceptionMiddleware(RequestDelegate next,IMailService emailSender)

{

    _next = next;

    _emailSender = emailSender;

}

public async Task InvokeAsync(HttpContext context)

{

    try

    {

        await _next(context);

    } catch(Exception ex)

    {

        EmailException(context,ex);

    }

}

private async void EmailException(HttpContext context,Exception ex)

{

    var uaString = context.Request.Headers["User-Agent"].ToString();

    var ipAnonymizedString = context.Connection.RemoteIpAddress.AnonymizeIP();

    var userId = "Unknown";

    var profileId = "Unknown";

    if(context.User.Identity.IsAuthenticated)

    {

        userId = context.User.FindFirstValue(ClaimTypes.NameIdentifier);

        profileId = context.User.GetUserClaim(ClaimsKey.ProfileId);

    }

    var sb = new StringBuilder($"An error has occurred on {context.Request.Host}. \r\n \r\n");

    sb.Append($"Path = {context.Request.Path} \r\n \r\n");

    sb.Append($"Error Message = {ex.Message} \r\n");

    sb.Append($"Error Source = {ex.Source} - {profileId} \r\n");

    if(ex.InnerException != null)

    {

        sb.Append($"Inner Exception = {ex.InnerException.ToString()} \r\n");

    } else

    {

        sb.Append("Inner Exception = null \r\n");

    }

    sb.Append($"Error StackTrace = {ex.StackTrace} \r\n");

    await _emailSender.SendMasterEmailAsync($"Error on {context.Request.Host}.",sb.ToString(),uaString,ipAnonymizedString,userId);

    throw ex;

}