If true, Tomcat attempts to null out any static or final fields from loaded classes when a web application is stopped as a work around for apparent garbage collection bugs and application coding errors.
There have been some issues reported with log4j when this option is true.
Applications without memory leaks using recent JVMs should operate correctly with this option set to false.
If not specified, the default value of true will be used.
public class LogThread extends Thread {
private static volatile boolean stopped;
private final StatisticsLogger statsLogger;
public LogThread(String loggerName, Config config) {
statsLogger = new FileLogger(loggerName, config);
}
public void run() {
while(!LogThread.stopped) {
try {
//do something
} catch (Exception ex) {
logger.error("Exception when logging data", ex);
}
}
statsLogger.shutdown();
}
public static final void shutdown() {
stopped = true;
}
}
Shutdown 在关闭中成为null,会抛出null point exception.
Tomcat与Log4j配置优化
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