在不同的日志文件中记录线程答案

【问题标题】：Logging of threads in different log file在不同的日志文件中记录线程
【发布时间】：2014-01-27 07:21:47
【问题描述】：

我有一个在 java 中使用线程的 java 类。目前我正在使用两个线程，我希望每个线程都将它的日志写入自己的日志文件中。我为此使用 log4j。但是我的 java 程序向我展示了异常行为。我能够创建两个不同的日志文件，但我可以看到，在我的第一个日志文件中，有来自线程一或二的日志消息，而在第二个日志文件中只有第二个线程消息，但我想要单独的日志记录两个线程。

这是我的线程文件

public class MainController extends Thread{   
 public static synchronized void main(String args[])
 {  
  ServerAccess t1=new ServerAccess("IP","root","zoomcallrec","cat /var/log/callrec/core1.log","com.ef.ThreadOne","Thread One");  
  ServerAccess t2=new ServerAccess("IP","root","zoomcallrec","cat /var/log/callrec/core1.log","com.ef.ThreadTwo","Thread Two");  
  t1.start();  

  t2.start();  
 }  
}

这是我的 log4j 文件

log4j.logger.com.ef.ThreadOne=DEBUG, ThreadFirst

log4j.appender.ThreadFirst=org.apache.log4j.RollingFileAppender
log4j.appender.ThreadFirst.File=C:/AnalyzerLog/ThreadOne/Analyzer.log
log4j.appender.ThreadFirst.MaxFileSize=1000KB
log4j.appender.ThreadFirst.MaxBackupIndex=10
log4j.appender.ThreadFirst.layout=org.apache.log4j.PatternLayout
log4j.appender.ThreadFirst.layout.ConversionPattern=%d [%t] (%F:%L) %-5p - %m%n

log4j.logger.com.ef.ThreadTwo=DEBUG, ThreadTwo

log4j.appender.ThreadTwo=org.apache.log4j.RollingFileAppender
log4j.appender.ThreadTwo.File=C:/AnalyzerLog/ThreadTwo/Analyzer.log
log4j.appender.ThreadTwo.MaxFileSize=1000KB
log4j.appender.ThreadTwo.MaxBackupIndex=10
log4j.appender.ThreadTwo.layout=org.apache.log4j.PatternLayout
log4j.appender.ThreadTwo.layout.ConversionPattern=%d [%t] (%F:%L) %-5p - %m%n

这是我的程序正在生成的日志文件。这是线程 1 的日志文件，它为线程 1 和线程 2 生成日志

2014-01-24 15:24:13,688 [Thread-1] (ServerAccess.java:76) DEBUG - Server is connect
2014-01-24 15:24:13,693 [Thread-0] (ServerAccess.java:76) DEBUG - Server is connect
2014-01-24 15:24:14,329 [Thread-1] (ServerAccess.java:97) DEBUG - Thread isThread TwoCounter0
2014-01-24 15:24:14,414 [Thread-1] (ServerAccess.java:97) DEBUG - Thread isThread TwoCounter1
2014-01-24 15:24:14,474 [Thread-1] (ServerAccess.java:97) DEBUG - Thread isThread TwoCounter2
2014-01-24 15:24:14,534 [Thread-1] (ServerAccess.java:97) DEBUG - Thread isThread TwoCounter3
2014-01-24 15:24:14,545 [Thread-0] (ServerAccess.java:97) DEBUG - Thread isThread OneCounter0
2014-01-24 15:24:14,589 [Thread-1] (ServerAccess.java:97) DEBUG - Thread isThread TwoCounter4
2014-01-24 15:24:14,635 [Thread-0] (ServerAccess.java:97) DEBUG - Thread isThread OneCounter1
2014-01-24 15:24:14,639 [Thread-1] (ServerAccess.java:97) DEBUG - Thread isThread TwoCounter5
2014-01-24 15:24:14,695 [Thread-0] (ServerAccess.java:97) DEBUG - Thread isThread OneCounter2
2014-01-24 15:24:14,724 [Thread-1] (ServerAccess.java:97) DEBUG - Thread isThread TwoCounter6
2014-01-24 15:24:14,755 [Thread-0] (ServerAccess.java:97) DEBUG - Thread isThread OneCounter3
2014-01-24 15:24:14,809 [Thread-1] (ServerAccess.java:97) DEBUG - Thread isThread TwoCounter7
2014-01-24 15:24:14,811 [Thread-0] (ServerAccess.java:97) DEBUG - Thread isThread OneCounter4
2014-01-24 15:24:14,861 [Thread-0] (ServerAccess.java:97) DEBUG - Thread isThread OneCounter5
2014-01-24 15:24:14,895 [Thread-1] (ServerAccess.java:97) DEBUG - Thread isThread TwoCounter8
2014-01-24 15:24:14,947 [Thread-0] (ServerAccess.java:97) DEBUG - Thread isThread OneCounter6
2014-01-24 15:24:14,957 [Thread-1] (ServerAccess.java:97) DEBUG - Thread isThread TwoCounter9
2014-01-24 15:24:15,019 [Thread-1] (ServerAccess.java:97) DEBUG - Thread isThread TwoCounter10
2014-01-24 15:24:15,032 [Thread-0] (ServerAccess.java:97) DEBUG - Thread isThread OneCounter7
2014-01-24 15:24:15,079 [Thread-1] (ServerAccess.java:97) DEBUG - Thread isThread TwoCounter11
2014-01-24 15:24:15,120 [Thread-0] (ServerAccess.java:97) DEBUG - Thread isThread OneCounter8
2014-01-24 15:24:15,139 [Thread-1] (ServerAccess.java:97) DEBUG - Thread isThread TwoCounter12
2014-01-24 15:24:15,180 [Thread-0] (ServerAccess.java:97) DEBUG - Thread isThread OneCounter9
2014-01-24 15:24:15,194 [Thread-1] (ServerAccess.java:97) DEBUG - Thread isThread TwoCounter13
2014-01-24 15:24:15,241 [Thread-0] (ServerAccess.java:97) DEBUG - Thread isThread OneCounter10
2014-01-24 15:24:15,281 [Thread-1] (ServerAccess.java:97) DEBUG - Thread isThread TwoCounter14
2014-01-24 15:24:15,301 [Thread-0] (ServerAccess.java:97) DEBUG - Thread isThread OneCounter11
2014-01-24 15:24:15,362 [Thread-0] (ServerAccess.java:97) DEBUG - Thread isThread OneCounter12
2014-01-24 15:24:15,367 [Thread-1] (ServerAccess.java:97) DEBUG - Thread isThread TwoCounter15
2014-01-24 15:24:15,417 [Thread-1] (ServerAccess.java:97) DEBUG - Thread isThread TwoCounter16
2014-01-24 15:24:15,417 [Thread-0] (ServerAccess.java:97) DEBUG - Thread isThread OneCounter13
2014-01-24 15:24:15,503 [Thread-1] (ServerAccess.java:97) DEBUG - Thread isThread TwoCounter17
2014-01-24 15:24:15,504 [Thread-0] (ServerAccess.java:97) DEBUG - Thread isThread OneCounter14

这里是线程 2 日志文件，它只为他自己的线程生成日志

2014-01-27 10:56:56,582 [Thread-1] (ServerAccess.java:77) DEBUG - Server is connect
2014-01-27 10:56:56,774 [Thread-1] (ServerAccess.java:98) DEBUG - Thread isThread TwoCounter0
2014-01-27 10:56:56,897 [Thread-1] (ServerAccess.java:98) DEBUG - Thread isThread TwoCounter1
2014-01-27 10:56:56,957 [Thread-1] (ServerAccess.java:98) DEBUG - Thread isThread TwoCounter2
2014-01-27 10:56:57,017 [Thread-1] (ServerAccess.java:98) DEBUG - Thread isThread TwoCounter3
2014-01-27 10:56:57,072 [Thread-1] (ServerAccess.java:98) DEBUG - Thread isThread TwoCounter4
2014-01-27 10:56:57,122 [Thread-1] (ServerAccess.java:98) DEBUG - Thread isThread TwoCounter5
2014-01-27 10:56:57,207 [Thread-1] (ServerAccess.java:98) DEBUG - Thread isThread TwoCounter6
2014-01-27 10:56:57,292 [Thread-1] (ServerAccess.java:98) DEBUG - Thread isThread TwoCounter7
2014-01-27 10:56:57,380 [Thread-1] (ServerAccess.java:98) DEBUG - Thread isThread TwoCounter8
2014-01-27 10:56:57,440 [Thread-1] (ServerAccess.java:98) DEBUG - Thread isThread TwoCounter9
2014-01-27 10:56:57,500 [Thread-1] (ServerAccess.java:98) DEBUG - Thread isThread TwoCounter10
2014-01-27 10:56:57,560 [Thread-1] (ServerAccess.java:98) DEBUG - Thread isThread TwoCounter11
2014-01-27 10:56:57,620 [Thread-1] (ServerAccess.java:98) DEBUG - Thread isThread TwoCounter12
2014-01-27 10:56:57,686 [Thread-1] (ServerAccess.java:98) DEBUG - Thread isThread TwoCounter13
2014-01-27 10:56:57,771 [Thread-1] (ServerAccess.java:98) DEBUG - Thread isThread TwoCounter14
2014-01-27 10:56:57,856 [Thread-1] (ServerAccess.java:98) DEBUG - Thread isThread TwoCounter15
2014-01-27 10:56:57,906 [Thread-1] (ServerAccess.java:98) DEBUG - Thread isThread TwoCounter16

【问题讨论】：

标签： java multithreading logging log4j

【解决方案1】：

我认为 log4j 不支持这种分离。您应该考虑 logback 框架（无论如何不推荐使用 log4j）。 Logback 带有一个用于日志分离的 SiftingAppender。更多信息：http://logback.qos.ch/manual/loggingSeparation.html

将此 SiftingAppender 与您的线程 ID 一起用作鉴别器应该不难。

【讨论】：

【解决方案2】：

在实例化您的 ServerAccess 对象时，为它们提供您希望它们使用的记录器，如下所示：

public class MainController { static void main (String[] args){ Logger l1 = Logger.getLogger("log4j.logger.com.ef.ThreadOne"); Logger l2 = Logger.getLogger("log4j.logger.com.ef.ThreadTwo"); ServerAccess t1 = new ServerAccess(l1); ServerAccess t2 = new ServerAccess(l2); t1.start(); t2.start(); }

然后，在ServerAccess 中，像这样使用该记录器：

public class ServerAccess extends Thread { private final Logger logger; public ServerAccess(Logger logger){ this.logger = logger; } public void Start() { logger.debug("Debug Statement"); } }

【讨论】：