myeclipse导出war包时报错java.lang.NullPointerException

myeclipse导出war包时，在工做空间的.metadata里的log里会有以下错误：java !ENTRY org.eclipse.jface 4 2 2014-05-29 19:24:08.682windows !MESSAGE Problems occurred when invoking code from plug-in: "org.eclipse.jface". !STACK 0

>>阅读原文<<