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我有以下正则表达式，我获得了正则表达式来解析日志文件并找到堆栈跟踪

^.+Exception[^\n]++(\s+at .++)+

查找堆栈跟踪非常有用。但是，我需要找到通过记录器输出的堆栈跟踪（特别是在 Bukkit Minecraft 服务器中）。它们看起来像这样：

2012-08-10 08:19:17 [SEVERE] java.lang.NullPointerException
2012-08-10 08:19:17 [SEVERE] at net.minecraft.server.World.tickEntities(World.java:1146)
2012-08-10 08:19:17 [SEVERE] at net.minecraft.server.MinecraftServer.q(MinecraftServer.java:567)
2012-08-10 08:19:17 [SEVERE] at net.minecraft.server.DedicatedServer.q(DedicatedServer.java:212)
2012-08-10 08:19:17 [SEVERE] at net.minecraft.server.MinecraftServer.p(MinecraftServer.java:476)
2012-08-10 08:19:17 [SEVERE] at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:408)
2012-08-10 08:19:17 [SEVERE] at net.minecraft.server.ThreadServerApplication.run(SourceFile:539)

日期和时间总是会改变，但 [SEVERE] 会一直存在。我正在寻找用正则表达式捕获这种格式的异常。任何异常，而不仅仅是 NPE。

我真的不知道该怎么做。我查看了一些关于正则表达式的教程，但这些大人物对我来说仍然是胡言乱语。这是我最近的尝试

^.+Exception[^\n]++(.++at .++)+

编辑：好的，我做了一些更多的研究并进一步研究。我做了这个： \d{4}-\d{2}-\d{2}\s\d{2}:\d{2}:\d{2}\s\[SEVERE\] 与第一部分匹配。不过，我在捕获整个跟踪时遇到了一些麻烦。

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2 回答 2

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这非常适合您使用 Logger 的方法。默认情况下，堆栈跟踪打印出堆栈跟踪的每一行的选项卡。我的示例将起始行与日期和原始错误消息以及异常错误和堆栈跟踪（如果它们存在）相匹配。

((?:[a-zA-Z]{3} \d{1,2}, \d{4,4} \d{1,2}:\d{2}:\d{2} (AM|PM) (\(INFO\)|\(SEVERE\)|\(WARNING\))).*\r(?:(.*Exception.*(\r.*)(\tat.*\r)+)))|((?:[a-zA-Z]{3} \d{1,2}, \d{4,4} \d{1,2}:\d{2}:\d{2} (AM|PM) (\(INFO\)|\(SEVERE\)|\(WARNING\))).*)

与以下任何一项匹配：

Feb 08, 2014 5:18:00 PM (SEVERE) Thread: 13 [com.datarefresh.refresh.RefreshActionQueuePersister.write] Could not write RefreshActionQueue checkpoint due to error
Feb 09, 2014 1:00:10 AM (INFO) Thread: 14 [com.datarefresh.refresh.RefreshWorker.doPostProcess] (DATA_INSIGHT_DATA_REFRESH.15) Post-processing...
Feb 09, 2014 1:00:20 AM (SEVERE) Thread: 14 [com.datarefresh.refresh.RefreshActionQueuePersister.write] Could not write RefreshActionQueue checkpoint due to error
java.lang.RuntimeException: Could not delete RefreshActionQueue checkpoint file
    at com.datarefresh.refresh.RefreshActionQueuePersister.delete(RefreshActionQueuePersister.java:71)
    at com.datarefresh.refresh.RefreshActionQueuePersister.write(RefreshActionQueuePersister.java:53)
    at com.refresh.RefreshActionQueue.persist(RefreshActionQueue.java:94)
    at com.refresh.RefreshActionQueue.removeCurrentAction(RefreshActionQueue.java:48)
    at com.refresh.RefreshWorker.doPostProcess(RefreshWorker.java:304)
    at com.refresh.RefreshWorker.doActions(RefreshWorker.java:82)
    at com.refresh.RefreshWorker.call(RefreshWorker.java:57)
    at com.datarefresh.refresh.RefreshWorker.call(RefreshWorker.java:28)
    at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
    at java.util.concurrent.FutureTask.run(FutureTask.java:138)
    at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
    at java.lang.Thread.run(Thread.java:662)
Feb 09, 2014 1:00:20 AM (INFO) Thread: 14 [com.datarefresh.refresh.RefreshWorker.doPostProcess] (DATA_INSIGHT_DATA_REFRESH.16) Done post-processing.

实际上，我会从匹配中删除 INFO 。

于 2014-02-14T22:53:19.000 回答
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我做到了伙计们！

^.+Exception[^\n]++(\s\d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2} \[SEVERE\] at .++)+

编译时只需要打开 DOTALL 即可。

于 2013-07-03T02:07:58.450 回答