JAVA常见错误收集

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

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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...

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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。