Apache Tomcat version 5.5 implements the Servlet 2.4 and JavaServer Pages 2.0 specifications
Apache Tomcat version 6.0 implements the Servlet 2.5 and JavaServer Pages 2.1 specifications
Apache Tomcat version 7.0 implements the Servlet 3.0 and JavaServer Pages 2.2 specifications
如果某jar包的META-INF目录下存在对应的tld文件,那么对于JSP1.2+的web 容器,
若把此jar包放在WEB-INF/lib目录下,可以直接引用标签,
不用再web.xml里面配置taglib;
Gavin