问题
I know that by replacing the el-api.jar in the lib folder of the Tomcat 6 directory with an EL 2.2 capable version that it is possible to utilize the power of EL 2.2 in Tomcat 6. See the following questions:
- http://code2inspire.wordpress.com/2010/11/05/how-to-enable-el-2-2-on-tomcat-6/
- http://www.javaplex.com/blog/for-jsf-2-how-to-enable-el-2-2-on-tomcat-6/
I have an app that I need to deploy for a public facing site and I want to do it as cheaply as possible. The best bargain for me would be to go with a Shared Tomcat hosting provider where you share a Tomcat instance with others, however the one I talked to doesn't offer Tomcat 7 environments.
It would be a lot more expensive and time consuming for me to setup a VPS to do this, so I was wondering if there is anyway I can swing this on Tomcat 6 without the ability to modify the lib directory?
回答1:
Use JBoss EL instead. It is EL 2.1 based, but offers the same enhancements as done in EL 2.2. Drop jboss-el.jar in /WEB-INF/lib and add the following to the web.xml:
<context-param>
<param-name>com.sun.faces.expressionFactory</param-name>
<param-value>org.jboss.el.ExpressionFactoryImpl</param-value>
</context-param>
No need to modify Tomcat's /lib. You only need to ensure that you're using Facelets instead of JSP.
来源：https://stackoverflow.com/questions/8661255/can-el-2-2-capable-jsf-web-applications-be-deployed-to-shared-tomcat-6-hosting-e