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[转]log4j中log.isDebugEnabled(), log.isInfoEnabled()和log.isTraceEnabled()作用

2018-03-23 log4j中log.isDebugEnabled(), log.isInfoEnabled()和log.isTraceEnabled()作用项目在应用log4j打印Debug,Info和Trace级别的log时需要加上对应的三个方法进行过滤，代码如下：if (log.isDebugEnabled()) { log.debug(" From: " + req.getFrom().toString() + " To: " + req.getTo().toString() + " CallId: " +...

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