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大致流程：应用app =》日志记录器Logger =》日志处理器Handler =》完成日志输出。其中，Logger与Handler过程中，还穿插着日志过滤器Filter =》日志格式化组件Formatter =》日志输出级别Level等组件。

The Apache Jakarta site is home to many well-known Java open source projects, including Tomcat, Ant, and log4j. A lesser-known subproject of Jakarta is Jakarta Commons, a repository of reusable Java ...

All set for the weekend? Not so fast. Yesterday, BleepingComputer summed up all the log4j and logback CVEs known thus far. Ever since the critical log4j zero-day saga started last week, security ...