The absolute uri: http://java.sun.com/jsp/jstl/core cannot be resolved

spring MVC 案例错误完整提示：
The absolute uri: http://java.sun.com/jsp/jstl/core cannot be resolved in either web.xml or the jar files deployed with this application

错误原因：
在某个jsp中有这样的代码：
<%@taglib uri=”http://java.sun.com/jsp/jstl/core” prefix=”c” %>

办法：实际是因为在WEB-INF/lib下缺少jstl.jar和standard.jar，网上下载放入即可。