问javax.servlet.ServletException: SRVE0207E

EN

com.ibm.wsspi.webcontainer.extension.WebExtensionProcessor createServletWrapper 
Servlet action is currently unavailable: SRVE0203E: Servlet [action]: Action Servlet 
was found, but is missing another required class.
SRVE0206E: This error typically implies that the servlet was originally compiled 
with classes which cannot be located by the server.

SRVE0187E: Check your class path to ensure that all classes required by the servlet 
are present.SRVE0210I: This problem can be debugged by recompiling the servlet using 
only the classes in the application's runtime class path

com.ibm.wsspi.webcontainer.extension.WebExtensionProcessor createServletWrapper Error 
occured while preparing the servlet for initialization. 
javax.servlet.ServletException: SRVE0207E: Uncaught initialization exception created 
by servlet