Question

我有许多工作者角色项目，我想利用log4net功能来记录信息。遗憾的是，我的日志中没有一个实际出现在我的输出窗口中。

我在调试器中跳过一个日志行，输出窗口反而吐出以下行：

＆＃39; WaWorkerHost.exe＆＃39; （CLR v4.0.30319：RdRuntime）：已加载＆＃39; C：\ Windows \ Microsoft.Net \组件\ GAC_MSIL \ System.Runtime.Caching \ v4.0_4.0.0.0__b03f5f7f11d50a3a \ System.Runtime.Caching.dll＆＃39 ;. 跳过加载符号。模块已优化并具有调试器选项＆＃39; Just My Code＆＃39;已启用。

看到这是我的代码，我很困惑为什么我看到这个例外。下面是我的日志app.config设置：

 <configSections>
    <section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler, log4net" />
    <sectionGroup name="applicationSettings" type="System.Configuration.ApplicationSettingsGroup, System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089">
      <section name="Montetary.Agents.HappyBirthday.Properties.Settings" type="System.Configuration.ClientSettingsSection, System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false" />
    </sectionGroup>
  </configSections>
  <system.diagnostics>
    <trace>
      <listeners>
        <add type="Microsoft.WindowsAzure.Diagnostics.DiagnosticMonitorTraceListener, Microsoft.WindowsAzure.Diagnostics, Version=2.8.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" name="AzureDiagnostics">
          <filter type="" />
        </add>
      </listeners>
    </trace>
  </system.diagnostics>
  <log4net>
    <appender name="AzureTraceAppender" type="log4net.Appender.TraceAppender">
      <layout type="log4net.Layout.PatternLayout">
        <!-- can be any pattern you like -->
        <conversionPattern value="%logger - %message" />
      </layout>
    </appender>
    <!-- does not have to be at the root level -->
    <root>
      <level value="ALL" />
      <appender-ref ref="AzureTraceAppender" />
    </root>
  </log4net>

我尝试按照此question中的示例进行操作，但结果是相同的

Answer 1

您可以查看一些内容：

在写入日志文件之前是否调用了log4net configure（只有一次就足够了）：

    static ManualResetEvent _quitEvent = new ManualResetEvent(false);


    public static void Main(string[] args)
    {

        IServiceCollection services = new ServiceCollection();
        ConfigureServices(services);

        var serviceProvider = services.BuildServiceProvider();

        Console.WriteLine($"[{DateTime.UtcNow.ToString("dd/MM/yyyy HH:mm:ss")}] -> Worker role started");

        var listener = serviceProvider.GetService<IMessageProcessor>();

        Console.CancelKeyPress += (sender, eArgs) =>
        {
            listener.OnStop();

            Console.WriteLine($"[{DateTime.UtcNow.ToString("dd/MM/yyyy HH:mm:ss")}] -> Worker role finished");
            _quitEvent.Set();
            eArgs.Cancel = true;
        };

        _quitEvent.WaitOne();
    }

    private static IConfigurationRoot GetConfiguration()
    {
        // Build appsetting.json configuration
        var environment = Environment.GetEnvironmentVariable("Environment");

        return new ConfigurationBuilder()
            .SetBasePath(Directory.GetCurrentDirectory())
            .AddJsonFile("appsettings.json", optional: true, reloadOnChange: true)
            .AddJsonFile($"appsettings.{environment}.json", optional: true)
            .AddEnvironmentVariables().Build();
    }

    private static void ConfigureServices(IServiceCollection services)
    {
        IConfigurationRoot configuration = GetConfiguration();
        services.AddSingleton<IConfigurationRoot>(configuration);

        // Support typed options
        services.AddOptions();

        services.Configure<RabbitMQSettings>(configuration.GetSection("RabbitMQConfig"));

        services.AddSingleton<IQueueConsumer, QueueConsumer>();
        services.AddScoped<IMessageProcessor, MessageProcessor>();

    }
}

接下来要为您的配置添加刷新功能：

log4net.Config.XmlConfigurator();

这将立即刷新消息。

确保已将Azure Diagnostics配置为所有用于调试的信息。

然后您可以启用调试内部log4net调试。见internal debugging on this log4net faq page。标准它应该记录到您配置的监听器。将autoflush =“true”选项添加到trace元素。或者找到您可以写入的辅助角色的目录，并访问以读取您的日志。

WorkerRole log4net跟踪appender日志未出现在输出窗口

1 个答案: