Use jstl in J2EE to report the http://java.sun.com/jsp/jstl/core cannot be resolved in either web. xml or the jar Error

I. Problems Found

Run the JSP page referenced by jstl

Error Reporting http://java.sun.com/jsp/jstl/core cannot be resolved in either web. xml or the jar

Ii. Cause Analysis

Possible 1: version issues

Jstl1.0 declaration is: <% @ taglib prefix = "C" uri = "http://java.sun.com/jstl/core" %>
Jstl1.1 statement is: <% @ taglib prefix = "C" uri = http://java.sun.com/jsp/jstl/core %>

Possible 2: No standard. Jar

Javaee5 comes with jstl1.2 version, the page is all with this method.

However, after javaee5, only jstl. jar is provided. Without Standard. jar, the TLD file is also packaged into jar. There is no way to configure JSP-config in the web. xml file.

Try to add standard. jar.

Possible three: Tomcat released application WEB-INF/lib without jstl. Jar

The jstl. jar package exists in the IDE project, but it does not exist in the application WEB-INF/lib released by Tomcat. This is the problem of tool release project. Copy a jar package and solve the problem in the past.

Original post address:Http://blog.csdn.net/lzz313/article/details/7554736