我有NLog包的Logger, 我想在配置记录器文件中定义trace enable = true。
我该怎么做?
我的NLog.config文件:
<?xml version="1.0" encoding="utf-8" ?>
<nlog xmlns="http://www.nlog-project.org/schemas/NLog.xsd"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<targets>
<target name="logfile" xsi:type="File" fileName="file.txt" />
<target name="logconsole" xsi:type="Console" />
</targets>
<rules>
<logger name="*" maxlevel="Trace" minlevel="Trace" writeTo="logfile" />
</rules>
</nlog>
答案 0 :(得分:2)
您可以通过在NLog.config的minLevel
部分设置rules
属性来执行此操作;
<rules>
<logger name="*" minlevel="Debug" writeTo="CSVFile" />
</rules>
Debug
会写出Debug
,Info
,Warn
,Error
和Fatal
级日志消息。仅跳过Trace
。
修改强>
相反,如果您只想记录Trace
,那么设置maxLevel
就像这样;
<rules>
<logger name="*" maxlevel="Trace" writeTo="CSVFile" />
</rules>
要仅记录特定的中间级别,请同时使用minLevel
和maxLevel
;
<rules>
<logger name="*" minlevel="Debug" maxlevel="Debug" writeTo="CSVFile" />
</rules>
<强> EDIT2 强>
我调整了你的配置文件,使得输出记录到控制台而不是文件;
<?xml version="1.0" encoding="utf-8" ?>
<nlog xmlns="http://www.nlog-project.org/schemas/NLog.xsd"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<targets>
<target name="logfile" xsi:type="File" fileName="file.txt" />
<target name="logconsole" xsi:type="Console" />
</targets>
<rules>
<logger name="*" maxlevel="Trace" writeTo="logconsole" />
</rules>
</nlog>
当我在测试应用程序中运行时,我正在编写多个日志级别,如此;
_logger.Trace("trace text");
_logger.Debug("debug text");
_logger.Info("info text");
_logger.Warn("warn text");
_logger.Error("error text");
_logger.Fatal("fatal text");
只有Trace文本显示在控制台窗口中。但需要注意的是,配置文件中的XML必须正确格式化。上面的示例正如我的测试应用程序中所述。
答案 1 :(得分:2)
您可以通过创建多个记录器实例来创建多个级别的日志记录,例如
<rules>
<!-- add your logging rules here -->
<!-- different logger instances for different environments, no levels are mentioned explicitly, can be done if exclusion of some levels is required -->
<logger name="Log.Dev" minlevel="Debug" writeTo="database" enabled="true" />
<logger name="Log.Staging" minlevel="Info" writeTo="database" enabled="true" />
<logger name="Log.Production" minlevel="Error" writeTo="database" enabled="true" />
</rules>
在初始化之后,给出要初始化的记录器的名称
/// <summary>
/// The log.
/// Getting Logger instance from key name defined in Web.config of main web file. Key name is LoggerInstanceName
/// On the basis of name , logger instance and defined rules can be switched from one to another.
/// </summary>
private static readonly NLog.Logger Log = LogManager.GetLogger(Convert.ToString(ConfigurationManager.AppSettings.Get("LoggerInstance")));
另外,请不要忘记在应用设置中添加密钥
<appSettings>
<!--logger instance name-->
<add key="LoggerInstanceName" value="Log.Dev" />
</appSettings>