jsp运行提示“Error instantiating servlet class Web.ActionServlet”

应该是配置web.xml时出现问题，在web.ActionServlet之间，查看字母的大小写是否不同

写的太快了，有字母大写，才出现此错误

HTTP Status 500 - Error instantiating servlet class Web.ActionServlet

--------------------------------------------------------------------------------

type Exception report

message Error instantiating servlet class Web.ActionServlet

description The server encountered an internal error that prevented it from fulfilling this request.

exception 

javax.servlet.ServletException: Error instantiating servlet class Web.ActionServlet
	org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:505)
	org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
	org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:958)
	org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:452)
	org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1087)
	org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:637)
	org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:318)
	java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
	java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
	org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
	java.lang.Thread.run(Unknown Source)