配置Struts连接池时遇到的一个问题

我在配置连接池的时候（用的是commons-dbcp-1.2.1），把MySQL的JDBC驱动包放在WEB-INF/lib目录下
Tomcat启动时报错，说是ClassNotFound “org.gjt.mm.mysql.Driver”
后来在tomcat-docs发现下面一段：

DBCP uses the Jakarta-Commons Database Connection Pool. It relies on number of Jakarta-Commons componenets:

• Jakarta-Commons DBCP 1.0
• Jakarta-Commons Collections 2.0
• Jakarta-Commons Pool 1.0

These jar files along with your the jar file for your JDBC driver should be installed in $CATALINA_HOME/common/lib.

NOTE:Third Party drivers should be in jarfiles, not zipfiles. Tomcat only adds $CATALINA_HOME/common/lib/*.jar to the classpath.

NOTE: Do not install these jarfiles in your /WEB-INF/lib, or $JAVA_HOME/jre/lib/ext, or anywhere else. You will experience problems if you install them anyplace other than $CATALINA_HOME/common/lib.

发现学习Java在这些配置问题的细节上要纠缠好多时间，希望将来能变好些吧。