java.lang.reflect.InvocationTargetException是什么情况?

java.lang.reflect.InvocationTargetException

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:483)

at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:303)

at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:431)

运行tomcat时出现的

解决办法：antlr-2.7.6.jar 的问题   版本问题或者冲突