Org.apache.juli.logging.LogFactory Such an error occurred in the Myeclipse+tomcat, why?

After the project has been deployed, start Tomcat error, java.lang.noclassdeffounderror:org/apache/juli/logging/logfactory
To report this mistake means you are using TOMCAT7.

The current MyEclipse kernel for eclipse3.5.* does not yet provide direct support for Tomcat 7, and the latest eclipse3.6.* can be directly supported.

There are two solutions:
First, open Myeclipse,preferentces->myeclipse->servers->tomcat->tomcat 6.x
, load Tomcat7, under "Paths", click "Add Jar/zip", load tomcat7 .../bin/tomcat-juli.jar. Click "OK".

Second, you can set the environment variable to add CLASSPATH to cataline_home/bin/tomcat-juli.jar,tomcat the default boot will be loaded automatically.
Classpath= ...; %catalina_home%\bin\tomcat-juli.jar;

Org.apache.juli.logging.LogFactory Such an error occurred in the Myeclipse+tomcat, why?