1
更新: 這不僅適用於AsyncAppender。控制檯也適用於此。Log4J:堆棧跟蹤打印期間出現AsyncAppender和NullPointerException
我面臨的AsyncAppender奇怪的行爲很少發生,但有足夠的傷害。
下面是代碼片段:
public void testNPE() {
try {
try {
throw new NullPointerException();
} catch (NullPointerException e) {
throw new RuntimeException(e);
}
} catch (RuntimeException e) {
logger.error("Catcha!" + e.getLocalizedMessage(), e);
}
}
可能的結果應該是:
07.12.12 10:21:34,904 ERROR [main] >> [com.ubs.eqdel.markitfeed.core.RetrieverTest:74] Catcha! java.lang.NullPointerException
java.lang.RuntimeException: java.lang.NullPointerException
at com.ubs.eqdel.markitfeed.core.RetrieverTest.testNPE(RetrieverTest.java:71)
...
Caused by: java.lang.NullPointerException
at com.ubs.eqdel.markitfeed.core.RetrieverTest.testNPE(RetrieverTest.java:69)
... 25 more
但對於5 20的嘗試我看到:
Exception in thread "Dispatcher-Thread-0" java.lang.NullPointerException
at java.io.Writer.write(Writer.java:140)
at org.apache.log4j.helpers.CountingQuietWriter.write(CountingQuietWriter.java:45)
at org.apache.log4j.WriterAppender.subAppend(WriterAppender.java:309)
at org.apache.log4j.RollingFileAppender.subAppend(RollingFileAppender.java:263)
at org.apache.log4j.WriterAppender.append(WriterAppender.java:160)
at org.apache.log4j.AppenderSkeleton.doAppend(AppenderSkeleton.java:251)
at org.apache.log4j.helpers.AppenderAttachableImpl.appendLoopOnAppenders(AppenderAttachableImpl.java:66)
at org.apache.log4j.AsyncAppender$Dispatcher.run(AsyncAppender.java:583)
at java.lang.T07.12.12 10:23:54,972 ERROR [main] >> [com.ubs.eqdel.markitfeed.core.RetrieverTest:74] Catcha! java.lang.NullPointerException
java.lang.RuntimeException: java.lang.NullPointerException
at com.ubs.eqdel.markitfeed.core.RetrieverTest.testNPE(RetrieverTest.java:71)
...
Caused by: java.lang.NullPointerException
at com.ubs.eqdel.markitfeed.core.RetrieverTest.testNPE(RetrieverTest.java:69)
... 25 more
這有什麼錯AsyncAppender?有人面對過嗎?什麼是這個解決方法?
是的,絕對。我檢查了消息來源。謝謝你發現票。看起來版本27已經修復了這個問題,至少我還沒有面對它。 –
太好了。我想你的意思是17,而不是27. – eis
正是!第17個。對不起,我的胖手指。 –