如何将进程ID添加到LOG4J日志文件？

Question

我目前在log4j中有以下模式布局。 我想将Process id添加到日志文件中。 我该怎么做？

log4j.appender.A1.layout=org.apache.log4j.PatternLayout
log4j.appender.A1.layout.ConversionPattern=%d [%t] %-5p %c - %m%n

粘贴样本日志消息

2011-01-07 11:48:21,940 [main] INFO  Testing1
2011-01-07 11:48:21,942 [main] INFO  Test.common.ApplicationProperties - Used log4j 

---

log4j.properties

 "log4j.properties" [Read only] 26 lines, 884 characters log4j.rootCategory=DEBUG, stdout, A1 log4j.appender.stdout=org.apache.log4j.ConsoleAppender log4j.appender.stdout.Threshold=WARN log4j.appender.stdout.layout=org.apache.log4j.PatternLayout log4j.appender.stdout.layout.ConversionPattern=%d{yyyy/MM/dd HH:mm:ss} %-5p (%c) %m%n log4j.appender.A1=org.apache.log4j.RollingFileAppender log4j.appender.A1.Threshold=DEBUG log4j.appender.A1.layout=org.apache.log4j.PatternLayout log4j.appender.A1.layout.ConversionPattern=%d [%t] %-5p %c - %m%n log4j.appender.A1.File=/homw/cus/logs/ccl.02.log log4j.appender.A1.MaxFileSize=5MB log4j.appender.A1.MaxBackupIndex=40 log4j.category.test.common.DBConnectionPool=WARN log4j.category.test.common.DataBaseHandler=WARN log4j.category.test.cttg.tables=WARN log4j.category.test.middleware.tables=WARN log4j.logger.org.apache.axis=ERROR log4j.logger.org.apache.catalina=ERROR 

Answer 1

您应该使用MDC来执行此操作

在配置文件中：

log4j.appender.stdout.layout.ConversionPattern=%d{yyyy/MM/dd HH:mm:ss}  %-5p  (%c) %m%n %X{PID}

%X{PID}用于匹配上下文值PID

然后，在代码中，在记录开始之前：

log4j 1.x

RuntimeMXBean rt = ManagementFactory.getRuntimeMXBean();
String pid = rt.getName();
MDC.put("PID", pid);

log4j 2.x

RuntimeMXBean rt = ManagementFactory.getRuntimeMXBean();
String pid = rt.getName();
ThreadContext.put("PID", pid);

Answer 2

使用标准Java类无法做到这一点。 通常，进程ID附加在文件级别而不是日志级别。 这里 （存档在这里 ）就是这样做的一个例子。

Answer 3

使用以下模式，显示threadID和类。 如果要查看进程ID，可以在此处查看

log4j.appender.SYSLOG.layout.conversionPattern=%-5p %d{ddMMyyyy HH:mm:ss.SSS} [%t:%c] %m%n

我设法这样做了，但我有几个appender，每个应用程序的一部分，如下所示：

log4j.rootCategory=ERROR, SYSLOG2
log4j.logger.com.myself.logic=DEBUG, SYSLOG
log4j.logger.com.myself.database=DEBUG, SYSLOG3
log4j.logger.com.myself.other=DEBUG, SYSLOG

以下是生成日志的一些示例，以检查是否符合您的要求：

INFO 20012015 11:56:17.318 [pool-1-thread-1:com.myself.logic.MonitoringTask] 10602: Validation of orders before UTC=2015-01-20T16:56:17
INFO 20012015 11:56:34.200 [main:com.gmv.pazgs.mus.mpu.CLibWrapper] 10402: MPU Library folder: xxxxx
INFO 20012015 11:56:34.209 [main:com.gmv.pazgs.mus.mpu.CLibWrapper] 10402: MPU Configuration folder: xxxxx
INFO 20012015 11:56:34.773 [main:com.gmv.pazgs.mus.mpu.CLibWrapper] 10402: Calling InitLeap()
INFO 20012015 11:56:34.786 [main:com.gmv.pazgs.mus.mpu.CLibWrapper] 10402: Calling InitFourier()
INFO 20012015 11:57:10.151 [CRON_Thread:com.myself.other.DTOLDispatcher] 10202: Times to send: [11:00, 23:00] - current time = Tue Jan 20 11:57:10 UTC 2015
INFO 20012015 11:58:10.165 [pool-1-thread-4:com.myself.logic.MonitoringTask] 10602: Executing Monitoring Task UTC=2015-01-20T11:58:10
INFO 20012015 11:58:10.171 [pool-1-thread-5:com.myself.logic.OrderValidationTask] 10602: Executing OrderValidationTask UTC=2015-01-20T11:58:10
INFO 20012015 11:58:10.291 [CRON_Thread:com.myself.other.DTOLDispatcher] 10202: Times to send: [11:00, 23:00] - current time = Tue Jan 20 11:58:10 UTC 2015
INFO 20012015 11:58:10.684 [pool-1-thread-4:com.myself.logic.MonitoringTask] 10602: Expiration of orders before UTC=2015-01-20T11:58:10
INFO 20012015 11:58:11.218 [pool-1-thread-4:com.myself.logic.MonitoringTask] 10602: checking orders for suppresed status before UTC=2015-01-20T11:58:11
INFO 20012015 11:58:11.244 [pool-1-thread-4:com.myself.logic.MonitoringTask] 10602: Validation of orders before UTC=2015-01-20T16:58:11