解決java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException

解決： 
工程目錄.settings\org.eclipse.wst.common.project.facet.core.xml文件中jst.web的version降低到2.5

<?xml version="1.0" encoding="UTF-8"?>
<faceted-project>
  <runtime name="Apache Tomcat v7.0"/>
  <fixed facet="wst.jsdt.web"/>
  <installed facet="java" version="1.6"/>
  <installed facet="jst.web" version="2.5"/><!--這里！-->
  <installed facet="wst.jsdt.web" version="1.0"/>
</faceted-project>