Serilog / JSNLog .NET Core记录空JSON

时间:2017-08-17 15:02:54

标签: json asp.net-core serilog jsnlog

我有一个使用Serilog和JSNLog进行客户端日志记录的.NET Core项目。如果我将JSON对象从客户端传递到服务器并使用Serilog进行记录,则记录的JSON对象为空。

非常奇怪 的事情是,如果我附加了调试器,则JSON记录正常。

例如:

调试时我得到:

[11:00:01 FTL] this works
[11:00:02 INF] Request finished in 342.1967ms 200 text/plain
[11:00:02 FTL] "testMessage": "this is an error"
[11:00:02 INF] Request finished in 374.7837ms 200 text/plain

当我得到Crtl + F5时:

[10:59:14 FTL] this works
[10:59:14 INF] Request finished in 253.3403ms 200 text/plain
[10:59:15 FTL] [[[]]]
[10:59:15 INF] Request finished in 267.2553ms 200 text/plain

我不确定问题是否与Serilog或JSNLog有关,但是我们将不胜感激。

我制作了一个非常简单的示例应用程序来复制它。使用默认的.NET Core Webapp

依赖关系如下所示: Dependencies

在Startup.cs中:

public Startup(IHostingEnvironment env)
        {
            var builder = new ConfigurationBuilder()
                .SetBasePath(env.ContentRootPath)
                .AddJsonFile("appsettings.json", optional: false, reloadOnChange: true)
                .AddJsonFile($"appsettings.{env.EnvironmentName}.json", optional: true)
                .AddEnvironmentVariables();
            Configuration = builder.Build();

            Log.Logger = new LoggerConfiguration()
                .WriteTo.Console().CreateLogger();
        }

 public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory)
        {
            loggerFactory.AddSerilog();

            if (env.IsDevelopment())
            {
                app.UseDeveloperExceptionPage();
                app.UseBrowserLink();
            }
            else
            {
                app.UseExceptionHandler("/Home/Error");
            }

            app.UseJSNLog(new LoggingAdapter(loggerFactory));

            app.UseStaticFiles();

            app.UseMvc(routes =>
            {
                routes.MapRoute(
                    name: "default",
                    template: "{controller=Home}/{action=Index}/{id?}");
            });
}

在我的前端:

<script src="~/lib/jsnlog.js/jsnlog.min.js"></script>
    <script>
            JL().fatal({ testMessage: "this is an error" });
            JL().fatal("this works");
        </script>

1 个答案:

答案 0 :(得分:3)

我有类似的问题。我看了一下JSNLog,似乎问题是在从日志消息中对对象进行去主体化时正在创建的JSON .NET对象的日志记录。

我做了以下解决方法:

  1. 我安装了Nuget软件包 Destructurama.JsonNet Install-Package Destructurama.JsonNet
  2. 然后我更改了Logger配置以包含解构:

    Log.Logger = new LoggerConfiguration()
            .Destructure.JsonNetTypes()
            .WriteTo.Console()
            .CreateLogger();
    
  3. 然后我创建了一个CustomLoggingAdapter类,如下所示:

    public class CustomLoggingAdapter: ILoggingAdapter
    {
        private ILoggerFactory _loggerFactory;
    
        public CustomLoggingAdapter(ILoggerFactory loggerFactory)
        {
            _loggerFactory = loggerFactory;
        }
    
        public void Log(FinalLogData finalLogData)
        {
            ILogger logger = _loggerFactory.CreateLogger(finalLogData.FinalLogger);
    
            Object message = LogMessageHelpers.DeserializeIfPossible(finalLogData.FinalMessage);
    
            switch (finalLogData.FinalLevel)
            {
                case Level.TRACE: logger.LogTrace("{@logMessage}", message); break;
                case Level.DEBUG: logger.LogDebug("{@logMessage}", message); break;
                case Level.INFO: logger.LogInformation("{@logMessage}", message); break;
                case Level.WARN: logger.LogWarning("{@logMessage}", message); break;
                case Level.ERROR: logger.LogError("{@logMessage}", message); break;
                case Level.FATAL: logger.LogCritical("{@logMessage}", message); break;
            }
        }
    }
    

    并将日志更改为具有以下格式{@logMessage}

  4. 注意:可以在JSONLog GitHub repo中找到LogMessageHelpers.DeserializeIfPossible

    1. 然后我更改了JSNLog配置以接收我的CustomLoggingAdapter,如下所示:

       app.UseJSNLog(new CustomLoggingAdapter(loggerFactory), jsnlogConfiguration);
      
    2. 并显示日志消息。

      如果有帮助,请告诉我