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: " +...
