Log4j的日志文件夹生成和日志文件编号问题?
log4j集成到了原来的日志输出类中,仅用做日志文件输出
配置如下:
log4j.rootLogger=A2
log4j.appender.A2=org.apache.log4j.RollingFileAppender
log4j.appender.A2.File=C:/test/log4j/info.log <----- 关键是这里
log4j.appender.A2.MaxFileSize=20KB
log4j.appender.A2.MaxBackupIndex=100
log4j.appender.A2.Append=false
log4j.appender.A2.layout=org.apache.log4j.PatternLayout
log4j.appender.A2.layout.ConversionPattern=%m%n
======================================
问题如下
1.指定的日志存放路径是 C:/test/log4j/info.log
但是我想动态生成时间日期文件夹,比如
C:/test/log4j/2008/01/02/info.log
C:/test/log4j/2008/01/02/info2.log
C:/test/log4j/2008/01/02/info3.log
C:/test/log4j/2008/01/03/info.log
C:/test/log4j/2008/02/14/info.log
这个如何在代码里实现,看过类似的动态路径C:/{filepath}/info.log,但也是一次性的,就是{filepath}一被指定,还是不变的
2.动态日志文件编号问题
如上配置生成的动态文件一旦超过20KB,则新文件是
info.log.1
info.log.2
info.log.3
...
...
我如何更改是新文件名为
info.log
info2.log
info3.log
...
...
直接通过log4j的方式编号文件
[解决办法]
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[解决办法]
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[解决办法]
org/apache/log4j/RollingFileAppender.java
修改target 的命名
public // synchronization not necessary since doAppend is alreasy synched void rollOver() { File target; File file; LogLog.debug("rolling over count=" + ((CountingQuietWriter) qw).getCount()); LogLog.debug("maxBackupIndex="+maxBackupIndex); // If maxBackups <= 0, then there is no file renaming to be done. if(maxBackupIndex > 0) { // Delete the oldest file, to keep Windows happy. file = new File(fileName + '.' + maxBackupIndex); if (file.exists()) file.delete(); // Map {(maxBackupIndex - 1), ..., 2, 1} to {maxBackupIndex, ..., 3, 2} for (int i = maxBackupIndex - 1; i >= 1; i--) { file = new File(fileName + "." + i); if (file.exists()) { target = new File(fileName + '.' + (i + 1)); LogLog.debug("Renaming file " + file + " to " + target); file.renameTo(target); } } // Rename fileName to fileName.1 target = new File(fileName + "." + 1); this.closeFile(); // keep windows happy. file = new File(fileName); LogLog.debug("Renaming file " + file + " to " + target); file.renameTo(target); } try { // This will also close the file. This is OK since multiple // close operations are safe. this.setFile(fileName, false, bufferedIO, bufferSize); } catch(IOException e) { LogLog.error("setFile("+fileName+", false) call failed.", e); } }
[解决办法]
有难度啊,我觉得你可以用Timer来动态生成按时间日期的文件夹,但问题怎么将log4j.appender.A2.File=C:/test/log4j/info.log改成动态的,像这样C:/{filepath}/info.log,看接下来有朋友想出好的办法吗?(其实可以使用Maven2 和 Ant来copy,但是多了步骤,麻烦);至于你那个: 2.动态日志文件编号问题 ,没必要吧,把log4j.appender.A2.MaxFileSize=20KB , MaxFileSize设大点,没什么事吧。
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