Question

我目前正在使用log4net作为我正在处理的应用程序。我已经设置了一个CsvRollingFileAppender但我想知道如何将它扩展到日志传递的参数。一个例子就是以下几点：

log.Info(string.format("{0} - {1} - {2} - {3}", value1, value2, value3, value4));

我的Appender的配置看起来像这样

<appender name="CsvRollingFileAppender" type="DataCalcuation.Classes.CsvHeaderOverride">
  <threshold value="INFO" />
  <lockingModel type="log4net.Appender.FileAppender+MinimalLock" />
  <file value="logs/" />
  <datePattern value="'DataCaclulation'.MM.dd.yyyy'.csv'" />
  <appendToFile value="true" />
  <rollingStyle value="Date" />
  <maxSizeRollBackups value="10" />
  <maximumFileSize value="5MB" />
  <staticLogFileName value="false" />
  <layout type="log4net.Layout.PatternLayout">
    <header value="DateTime,Level,Location,Message&#13;&#10;" />
    <conversionPattern value="%date{M/d/yyyy H:mm:ss.fff},%level,%location,%message%newline" />
  </layout>
</appender>

我想将其设置为具有

标题

 DateTime, Level, Location, PassedValue1, PassedValue2,  .....

我偶然发现了以下几篇不同的文章，并想知道这是否是正确的方法，或者是否有更有效的方式

非常感谢任何见解

我想我必须做这样的事情 - Mapping message properties to CSV columns using log4net

答案：

正如我所承诺的那样，我用来实现我想要做的代码所有的功劳都归功于Steven Padfield，我用过的帖子

我创建了一个名为CsvLogEvent的类，其中包含我想在日志中捕获的项目

public class CsvLogEvent
{
     public int Value1 {get; set;}
     public string Value2 {get; set;}
     public string Value3 {get; set;}
     public int Value4 {get; set;} 
}

然后我使用以下格式记录事件

private readonly ILog log = log4net.LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);

log.Info(new CsvLogEvent {
     Value1 = 1,
     Value2 = "Test",
     Value3 = "Log Event",
     Value4 = 0
});

要对属性格式化CSV输出，我必须创建一个类来处理新的Pattern

public class CsvPattern : PatternLayout
{
     public override void Format(TextWriter writer, LoggingEvent loggingEvent)
     {
          if (loggingEvent.MessageObject != null)
          {
               PropertyInfo[] properties = loggingEvent.MessageObject.GetType().GetProperties();
               foreach(PropertyInfo prop in properties)
               {
                    object value = prop.GetValue(loggingEvent.MessageObject, null);
                    loggingEvent.Properties[prop.Name] = value;
               }
           }
           base.Format(writer, loggingEvent);
     }
}

然后最终在app.config文件中设置appender

<appender name="Test" type="DataCalcuation.Classes.CsvAppender">
  <threshold value="INFO" />
  <lockingModel type="log4net.Appender.FileAppender+MinimalLock" />
  <file value="logs/" />
  <datePattern value="'DataCaclulation'.MM.dd.yyyy'.csv'" />
  <appendToFile value="true" />
  <rollingStyle value="Date" />
  <maxSizeRollBackups value="10" />
  <maximumFileSize value="5MB" />
  <staticLogFileName value="false" />
  <layout type="DataCalcuation.Classes.CsvPattern">
    <header value="DateTime,Level,Location,Value1, Value2, Value3, Value4&#13;&#10;" />
    <conversionPattern value="%date{M/d/yyyy H:mm:ss.fff},%level,%location,%property{Value1},%property{Value2},%property{Value3},%property{Value4}%newline" />        
  </layout>
</appender>

log4net CSV文件Appender自定义参数

0 个答案: