Tomcat 应用程序日志未显示完整的堆栈跟踪

Question

Got an web application running on Tomcat. I log exceptions and their stack traces using slf4j/logback. eg

2017-08-01 00:00:00.000 [http-nio-80-exec-5] ERROR g.s.GuiceyRequestFactoryServlet - 'Server Failure'
java.lang.reflect.InvocationTargetException: null
...
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-util.jar:8.0.33]
    at java.lang.Thread.run(Unknown Source) [na:1.8.0_131]
Caused by: ...
    ... 59 common frames omitted
Caused by: ...
    ... 64 common frames omitted
java.lang.NullPointerException: null

Because the real place that caused the NPE is nested a few level down within at least two reflection invocations, not sure if thats the case, Tomcat/slf4j/logback does not show the full stacktrace and stopped at the NPE, not further down.

I am expecting something like eg

2017-08-01 00:00:00.000 [http-nio-80-exec-5] ERROR g.s.GuiceyRequestFactoryServlet - 'Server Failure'
java.lang.reflect.InvocationTargetException: null
...
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-util.jar:8.0.33]
    at java.lang.Thread.run(Unknown Source) [na:1.8.0_131]
Caused by: ...
    ... 59 common frames omitted
Caused by: ...
    ... 64 common frames omitted
Caused by: java.lang.NullPointerException: null
    at java.util.Calendar.setTime(Calendar.java:1770) ~[na:1.8.0_60]
    ... 80 common frames omitted

ie to show a deeper stacktrace in the log. Does anyone know where should I look at and how to achieve that? eg Tomcat config? logback config? slf4j methods?

Edit

For those thinking this is a duplication of some other question asking about those "... xx common frames omitted", NO, I do not care these lines. I was asking about the last NPE not being printed AT ALL. Please ready carefully first.

Answer 1

这应该可以使用 -XX:-OmitStackTraceInFastThrow 选项。

Answer 2

The ... 59 more frames ommitted only means that these exceptions were already printed before. In Logback you can restructure stack track to avoid duplicates and print stack lines always in correct order.