本文来自CSDN博客：http://blog.csdn.net/gabriel80/archive/2008/05/29/2493612.aspx
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The absolute uri: http://java.sun.com/jsp/jstl/core cannot be resolved in either web.xml or the jar files 抛出异常：
Solution:解决方案：
Copy the standard.jar and jstl.jar file into WEB-INF/lib directory in you project复制standard.jar和jstl.jar文件到web-inf/lib目录在您的项目
The absolute uri: http://acegisecurity.org/authz cannot be resolved in either web.xml or the jar files：抛出异常
solution:
acegi-security-1.0.5.jar.acegi-security-tiger-1.0.5.jar
http://displaytag.sf.net cannot be resolved in either web.xml or the jar files
displaytag-1.1.1.jar
http://struts-menu.sf.net/tag-el cannot be resolved in either web.xml or the jar files
struts-menu-2.4.3.jar
?The absolute uri: http://www.opensymphony.com/oscache cannot be resolved in either web.xml or the jar
oscache-2.3.jar
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sitemesh-2.2.1.jar
The absolute uri: http://www.appfuse.org/tags/struts cannot be resolved
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