java - Log4J自定义字段

介绍:

我试图获取其他字段以使用log4j及其工作日志进行记录，但是仅当我在代码中而不是在log4j.properties中创建附加程序时

进展:

本文将Adding Conversion Characters to PatternLayout用于log4j 1.1.3

问题:

使用属性文件，它将运行，但不会使用AppServerPatternLayout，因此不会显示自定义字段。

Download Code

customlog.properties

log4j.rootLogger=FATAL
log4j.logger.some.log=INFO,stdout

log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=logging.AppServerPatternLayout
log4j.appender.stdout.layout.ConversionPattern=-----------------using log file------------------------%nTime:      %d%nHost:      %h%nServer:    %s%nComponent: %b%nVersion:   %v%nPriority:  %p%nThread Id: %t%nContext:   %x%nMessage:   %m%n

没有log4j属性文件的Main.java日志记录

AppServerLoggerFactory factory;
factory = new AppServerLoggerFactory("MyServer", "MyComponent", "1.0");
AppServerLogger.setFactory(factory);
Logger logger = AppServerLogger.getLogger("some.log");
PatternLayout layout = new AppServerPatternLayout( formatString );
logger.addAppender( new ConsoleAppender(layout) );
logger.info("Hello");

使用log4j属性文件记录Main.java

PropertyConfigurator.configure("customlog.properties");
AppServerLoggerFactory factory;
factory = new AppServerLoggerFactory("MyServer", "MyComponent", "1.0");
AppServerLogger.setFactory(factory);
Logger logger = AppServerLogger.getLogger("some.log");
logger.info("Hello");

预期产量

----------------using in code appender----------------------
Time:      2009-11-06 12:55:05,785
Host:      M1330
Server:    MyServer
Component: MyComponent
Version:   1.0
Priority:  INFO
Thread Id: main
Context:
Message:   logging config from code

实际产量

-----------------using log file------------------------
Time:      2009-11-06 12:56:17,983
Host:
Server:
Component:
Version:
Priority:  INFO
Thread Id: main
Context:
Message:   logging config from customlog.properties

解

使用MDC，您可以添加自定义字段，例如

MDC.put("Version", versionName);
Logger log = LogManager.getLogger("some.log");
log.info("Hello");

并用大写字母X将其拉出到log4j.properties中

log4j.appender.stdout.layout.ConversionPattern=%X{Version}

最佳答案

从您发布的示例中，我只能猜测AppServerPatternLayout不在logging包中。一切看起来都找到了。加

log4j.DEBUG=true

到您的属性文件。然后log4j将在读取属性时转储其操作。也许这使您知道出了什么问题。

如果那没有帮助，请考虑使用Nested Diagnostic Contexts。

LOG4J

java - Log4J自定义字段