Log4j 不同的包输出到不同的文件

        今天想做个小项目，用quartz启动两个自动作业，因为以后还要有很多自动作业要添加进来，所以考虑不把日志输出到一个文件，而是每个自动作业Log输出到独立的一个文件，每个自动作业放在不同的java包里，用包来配置log4j。问题来了，当我在 log4j.rootLogger 里配置两个不同包的log时，这两个log总是输出到自己以及到对方配置的文件里，如：

log4j.properties:

log4j.rootLogger=info, zeng.quartz , zeng.quartz2

log4j.appender.zeng.quartz=org.apache.log4j.DailyRollingFileAppender   
log4j.appender.zeng.quartz.File=../quartzLog/log/log1.log
log4j.appender.zeng.quartz.MaxFileSize=10KB  
log4j.appender.zeng.quartz.MaxBackupIndex=4
log4j.appender.zeng.quartz.layout=org.apache.log4j.PatternLayout
log4j.appender.zeng.quartz.DatePattern  ='.'yyyy-MM-dd
log4j.appender.zeng.quartz.Threshold = DEBUG
log4j.appender.zeng.quartz.layout.ConversionPattern= %-d{yyyy-MM-dd HH:mm:ss}  [ %t:%r ] - [ %p ]  %m%n
#log4j.additivity.zeng.quartz=false

log4j.appender.zeng.quartz2=org.apache.log4j.DailyRollingFileAppender   
log4j.appender.zeng.quartz2.File=../quartzLog/log/log2.log
log4j.appender.zeng.quartz2.MaxFileSize=10KB  
log4j.appender.zeng.quartz2.MaxBackupIndex=4
log4j.appender.zeng.quartz2.layout=org.apache.log4j.PatternLayout
log4j.appender.zeng.quartz2.DatePattern  ='.'yyyy-MM-dd
log4j.appender.zeng.quartz2.Threshold = DEBUG
log4j.appender.zeng.quartz2.layout.ConversionPattern=%-d{yyyy-MM-dd HH:mm:ss}  [ %t:%r ] - [ %p ]  %m%n
#log4j.additivity.zeng.quartz2=false

java:

package <span style="color:#FF0000;">zeng.quartz</span>;import java.io.BufferedWriter;import java.io.File;import java.io.FileWriter;import java.text.SimpleDateFormat;import java.util.Date;import org.apache.log4j.Logger;/** * @author Zeng 2016-4-24 */public class MyQuartz1 {private transient static final Logger logger = Logger.getLogger(MyQuartz1.class);//private transient static final Logger logger = Logger//.getLogger("zeng.quartz.MyQuartz1");private static final String OUT_PATH = "C:\\Users\\Administrator\\Desktop\\QuartzLog.txt";private static final String RN = "\n";SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");public void beginTask() throws Exception {logger.info("Task MyQuartz1 begin!");try {File f = new File(OUT_PATH);logger.info("File path: " + OUT_PATH);BufferedWriter bw = new BufferedWriter(new FileWriter(f, true));bw.write(sdf.format(new Date()) + RN);bw.close();logger.info("Already wrote to file");} catch (Exception e) {logger.error(e.getMessage());e.printStackTrace();}logger.info("Task MyQuartz1 end!");}}

package <span style="color:#FF0000;">zeng.quartz2</span>;import java.io.BufferedWriter;import java.io.File;import java.io.FileWriter;import java.text.SimpleDateFormat;import java.util.Date;import org.apache.log4j.Logger;/** * @author Zeng * 2016-4-24 */public class MyQuartz2 {private transient static final Logger logger = Logger.getLogger(MyQuartz2.class);//private transient static final Logger logger = Logger//.getLogger("zeng.quartz2.MyQuartz2");private static final String OUT_PATH = "C:\\Users\\Administrator\\Desktop\\QuartzLog2.txt";private static final String RN = "\n";SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");public void beginTask() throws Exception {logger.info("Task MyQuartz2 begin!");try {File f = new File(OUT_PATH);logger.info("File path: " + OUT_PATH);BufferedWriter bw = new BufferedWriter(new FileWriter(f, true));bw.write(sdf.format(new Date()) + RN);bw.close();logger.info("Already wrote to file");} catch (Exception e) {logger.error(e.getMessage());e.printStackTrace();}logger.info("Task MyQuartz2 end!");}}

这样配置的话，

MyQuartz1 

的log会打到log1.log和log2.log里！：

2016-04-24 15:32:00  [ schedule_Worker-1:9817 ] - [ INFO ]  Task MyQuartz1 begin!
2016-04-24 15:32:00  [ schedule_Worker-1:9819 ] - [ INFO ]  File path: C:\Users\Administrator\Desktop\QuartzLog.txt
2016-04-24 15:32:00  [ schedule_Worker-2:9818 ] - [ INFO ]  Task MyQuartz2 begin!
2016-04-24 15:32:00  [ schedule_Worker-2:9819 ] - [ INFO ]  File path: C:\Users\Administrator\Desktop\QuartzLog2.txt
2016-04-24 15:32:00  [ schedule_Worker-1:9820 ] - [ INFO ]  Already wrote to file
2016-04-24 15:32:00  [ schedule_Worker-2:9821 ] - [ INFO ]  Already wrote to file
2016-04-24 15:32:00  [ schedule_Worker-1:9821 ] - [ INFO ]  Task MyQuartz1 end!
2016-04-24 15:32:00  [ schedule_Worker-2:9821 ] - [ INFO ]  Task MyQuartz2 end!

MyQuartz2 

的log也会打到log1.log和log2.log里！：

2016-04-24 15:32:00  [ schedule_Worker-1:9817 ] - [ INFO ]  Task MyQuartz1 begin!
2016-04-24 15:32:00  [ schedule_Worker-1:9819 ] - [ INFO ]  File path: C:\Users\Administrator\Desktop\QuartzLog.txt
2016-04-24 15:32:00  [ schedule_Worker-2:9818 ] - [ INFO ]  Task MyQuartz2 begin!
2016-04-24 15:32:00  [ schedule_Worker-2:9819 ] - [ INFO ]  File path: C:\Users\Administrator\Desktop\QuartzLog2.txt
2016-04-24 15:32:00  [ schedule_Worker-1:9820 ] - [ INFO ]  Already wrote to file
2016-04-24 15:32:00  [ schedule_Worker-2:9821 ] - [ INFO ]  Already wrote to file
2016-04-24 15:32:00  [ schedule_Worker-1:9821 ] - [ INFO ]  Task MyQuartz1 end!
2016-04-24 15:32:00  [ schedule_Worker-2:9821 ] - [ INFO ]  Task MyQuartz2 end!

原因是我把 log4j.rootLogger=info, zeng.quartz , zeng.quartz2 中的 zeng.quartz , zeng.quartz2配置到了 rootLogger 里了，而rootLogger 作为跟Log， 里面配置的所有log都会互通的，就是说Java里取到的Logger实例如果属于rootLogger，用这个实例打的log，也会打到 rootLogger其他实例里。具体到我的例子就是，我在

MyQuartz1

private transient static final Logger logger = Logger.getLogger(MyQuartz1.class);

拿到的这个 logger，是配置在rootLogger里的，当我用这个logger打

logger.info("Task MyQuartz1 begin!");

这条信息时，

这个log打到 zeng.quartz 配置的log1.log里。

然后发现rootLogger里还有 zeng.quartz2这个配置，就又把

logger.info("Task MyQuartz1 begin!");

这个log打到 zeng.quartz2 配置的log2.log里。

于是 log1.log 和 log2.log 都有了这条信息。  

MyQuartz2

里打的log同理。

因为

MyQuartz1

和

MyQuartz2

同时启动，所以会有上面一个log文件里并行打log的效果。

解决：

不把自定义的log配置到rootLogger里，自定义的log用 log4j.logger 来定义：

log4j.properties:

log4j.rootLogger=info, stdout, rootFile

log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d-[quartzProject] %p %m%n

log4j.appender.rootFile=org.apache.log4j.DailyRollingFileAppender   
log4j.appender.rootFile.File=../quartzLog/log/root.log
log4j.appender.rootFile.MaxFileSize=10KB  
log4j.appender.rootFile.MaxBackupIndex=4
log4j.appender.rootFile.layout=org.apache.log4j.PatternLayout
log4j.appender.rootFile.DatePattern  ='.'yyyy-MM-dd
log4j.appender.rootFile.Threshold = DEBUG
log4j.appender.rootFile.layout.ConversionPattern=%-d{yyyy-MM-dd HH:mm:ss}  [ %t:%r ] - [ %p ]  %m%n

log4j.logger.zeng.quartz=DEBUG,zeng.quartz   
log4j.appender.zeng.quartz=org.apache.log4j.DailyRollingFileAppender   
log4j.appender.zeng.quartz.File=../quartzLog/log/log1.log
log4j.appender.zeng.quartz.MaxFileSize=10KB  
log4j.appender.zeng.quartz.MaxBackupIndex=4
log4j.appender.zeng.quartz.layout=org.apache.log4j.PatternLayout
log4j.appender.zeng.quartz.DatePattern  ='.'yyyy-MM-dd
log4j.appender.zeng.quartz.Threshold = DEBUG
log4j.appender.zeng.quartz.layout.ConversionPattern= %-d{yyyy-MM-dd HH:mm:ss}  [ %t:%r ] - [ %p ]  %m%n
#log4j.additivity.zeng.quartz=false

log4j.logger.zeng.quartz2=DEBUG,zeng.quartz2
log4j.appender.zeng.quartz2=org.apache.log4j.DailyRollingFileAppender   
log4j.appender.zeng.quartz2.File=../quartzLog/log/log2.log
log4j.appender.zeng.quartz2.MaxFileSize=10KB  
log4j.appender.zeng.quartz2.MaxBackupIndex=4
log4j.appender.zeng.quartz2.layout=org.apache.log4j.PatternLayout
log4j.appender.zeng.quartz2.DatePattern  ='.'yyyy-MM-dd
log4j.appender.zeng.quartz2.Threshold = DEBUG
log4j.appender.zeng.quartz2.layout.ConversionPattern=%-d{yyyy-MM-dd HH:mm:ss}  [ %t:%r ] - [ %p ]  %m%n
#log4j.additivity.zeng.quartz2=false

log4j.logger.org.springframework=ERROR
log4j.logger.org.hibernate=ERROR
log4j.logger.org.hibernate.ps.PreparedStatementCache=ERROR

这样就是预期的那样打log：

log1.log：

2016-04-24 15:32:00  [ schedule_Worker-1:9817 ] - [ INFO ]  Task MyQuartz1 begin!
2016-04-24 15:32:00  [ schedule_Worker-1:9819 ] - [ INFO ]  File path: C:\Users\Administrator\Desktop\QuartzLog.txt
2016-04-24 15:32:00  [ schedule_Worker-1:9820 ] - [ INFO ]  Already wrote to file
2016-04-24 15:32:00  [ schedule_Worker-1:9821 ] - [ INFO ]  Task MyQuartz1 end!

log2.log：

2016-04-24 15:32:00  [ schedule_Worker-2:9818 ] - [ INFO ]  Task MyQuartz2 begin!
2016-04-24 15:32:00  [ schedule_Worker-2:9819 ] - [ INFO ]  File path: C:\Users\Administrator\Desktop\QuartzLog2.txt
2016-04-24 15:32:00  [ schedule_Worker-2:9821 ] - [ INFO ]  Already wrote to file
2016-04-24 15:32:00  [ schedule_Worker-2:9821 ] - [ INFO ]  Task MyQuartz2 end!

root.log：

2016-04-24 15:32:00  [ schedule_Worker-1:9817 ] - [ INFO ]  Task MyQuartz1 begin!
2016-04-24 15:32:00  [ schedule_Worker-1:9819 ] - [ INFO ]  File path: C:\Users\Administrator\Desktop\QuartzLog.txt
2016-04-24 15:32:00  [ schedule_Worker-2:9818 ] - [ INFO ]  Task MyQuartz2 begin!
2016-04-24 15:32:00  [ schedule_Worker-2:9819 ] - [ INFO ]  File path: C:\Users\Administrator\Desktop\QuartzLog2.txt
2016-04-24 15:32:00  [ schedule_Worker-1:9820 ] - [ INFO ]  Already wrote to file
2016-04-24 15:32:00  [ schedule_Worker-2:9821 ] - [ INFO ]  Already wrote to file
2016-04-24 15:32:00  [ schedule_Worker-1:9821 ] - [ INFO ]  Task MyQuartz1 end!
2016-04-24 15:32:00  [ schedule_Worker-2:9821 ] - [ INFO ]  Task MyQuartz2 end!