1.javax.naming.NameNotFoundException: Name java:comp is not bound in this Context
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--这是在初始化context时(Context envCtx = (Context) ctx.lookup("java:comp/env");)抛出的异常；解决方法是把工程/WEB-INF/lib下面naming-common.jar,naming-factory.jar,naming-resources.jar三个jar包删除；
2. unable to complie class for jsp
===>
是因为TOOL.JAR SERVLET_API.JAR与TOMCAT 有冲突。
3.org.Apache.struts.taglib.html.MessagesTei
关键字: struts
tomcat5.5 中 JasperException: Failed to load or instantiate TagExtraInfo class:org.Apache.struts.taglib.html.MessagesTei
tomcat5.5 中 JasperException: Failed to load or instantiate TagExtraInfo class:org.Apache.struts.taglib.html.MessagesTei
JasperException: Failed to load or instantiate TagExtraInfo class: com.acme.tag.IterateTEI
等等...
==>
原因是 web-inf/lib/下出现了jsp-api.jar和,serverlet-api.jar，把它们删除，然后重新启动 web应用即可。