Severe: error filterStart error resolution

My question is: same JDK version, same tomcat version, project written using jfinal under Windows, and then packaged under the webapps directory of tomcat6 for ubuntu12.04 server:
The following error occurs:

SEVERE: Error filterStart 
Aug 27, 2013 9:37:44 AM org.apache.catalina.core.StandardContext start 
SEVERE: Context [/test] startup failed due to previous errors 

Based on my own experience and solutions, here is my approach:
First remove &lt from web.xml; filter> Tag, and then restart Tomcat. The error will be reported in the background of Tomcat to see what is the cause of the error.
If a package is missing, the necessary package is imported, and any other errors resolve themselves. Mine is not short of bags

SEVERE: End event threw exception 
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
        at sun.reflect.NativeMethodAccessorImpl.invoke( 
        at sun.reflect.DelegatingMethodAccessorImpl.invoke( 
        at java.lang.reflect.Method.invoke( 
        at org.apache.tomcat.util.IntrospectionUtils.callMethod1( 
        at org.apache.tomcat.util.digester.SetNextRule.end( 
        at org.apache.tomcat.util.digester.Rule.end( 
        at org.apache.tomcat.util.digester.Digester.endElement( 

According to the information I collected on the Internet, it is probably due to the inconsistency or lower version of the JDK version; Select a unified version of the development and running environments
If the version is not unified, the unified version, if the version is low, then change to a high version.
(However, I also have a problem here, if the server can not connect to the external network, then the program started under Tomcat is still an error)
Here is the download link for the JDK:

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