需要添加依賴 apache-log4j-extras-X.X.X.jar
fileNamePattern 以gz或者zip結尾即可
補充說明：
新生成歸檔gz日志文件，服務器上 vim查看和文本文件沒有區別
可以用gzip -l 查看壓縮率，確實為壓縮文件，grep查不到內容，需要用zgrep
ftp到window機器上用解壓縮軟件可以看到是壓縮文件
參考資料：http://logging.apache.org/log4j/extras/apidocs/org/apache/log4j/rolling/TimeBasedRollingPolicy.html
Automatic file compression
TimeBasedRollingPolicy supports automatic file compression. This feature is enabled if the value of the FileNamePattern option ends with .gz or .zip.
FileNamePattern value |
Rollover schedule | Example |
|---|---|---|
/wombat/foo.%d.gz |
Daily rollover (at midnight) with automatic GZIP compression of the archived files. | During November 23rd, 2004, logging output will go to the file /wombat/foo.2004-11-23. However, at midnight that file will be compressed to become /wombat/foo.2004-11-23.gz. For the 24th of November, logging output will be directed to /wombat/folder/foo.2004-11-24 until its rolled over at the beginning of the next day. |
參考資料：https://blog.csdn.net/rootcn/article/details/30237401