C++ Standard Library provides a set of common classes and interfaces that greatly extend the core C++ language. The library, however, is not self-explanatory. To make full use of its components-and to benefit from their power-you need a resource tha
**The absolute uri:http://java.sun.com/jsp/jstl/core(也可能是http://java.sun.com/jstl/core) cannot be resolved in either web.xml or the jar files deployed**
可能二：项目目录下WEB-INF/lib下没有jstl.jar*，standard.jar
可能三：tomca的lib目录下没有jstl.jar，standard.jar
所需要下载的东西
