Jsp compile problem

[cwyou]

Hi:     I build the Geronimo and its server successfully. When I enter http://localhost:8080/geronimo-web-console to access the JMX Agent View. The page comes out the following message:   HTTP ERROR: 500 No Java compiler was found to compile the generated source for the JSP. This can usually be solved by copying manually $JAVA_HOME/lib/tools.jar from the  JDK to the common/lib directory of the Tomcat server, followed by a Tomcat restart. If using an alternate Java compiler, please check its installation and access path.   RequestURI=/geronimo-web-console/ Powered by Jetty:// This seems a problem cause by classpath setting. But, I don't know where to solve this. Geronimo use Jetty as its web container, not Tomcat. Does anybody know how to solve this...