Tomcat Error: HTTP Status (wrapper cannot find servlet Class) solution _java

Tomcat error: HTTP Status 500-wrapper cannot find servlet class

HTTP Status 500-wrapper cannot find servlet class Com.servlet.servlet.RegServlet or a class it depends on

type Exception

Message Wrapper cannot find servlet class Com.servlet.servlet.RegServlet or a class it depends on

Description The server encountered an internal error which prevented it from fulfilling this request.

exception

Javax.servlet.ServletException:Wrapper cannot find servlet class Com.servlet.servlet.RegServlet or a class it depends on< C1/>org.apache.catalina.valves.errorreportvalve.invoke (errorreportvalve.java:103)
 Org.apache.catalina.connector.CoyoteAdapter.service (coyoteadapter.java:293)
 Org.apache.coyote.http11.Http11Processor.process (http11processor.java:861)
 Org.apache.coyote.http11.http11protocol$http11connectionhandler.process (http11protocol.java:606)
 Org.apache.tomcat.util.net.jioendpoint$worker.run (jioendpoint.java:489)
 Java.lang.Thread.run (Unknown Source )
 

Root cause

Java.lang.ClassNotFoundException:com.servlet.servlet.RegServlet

Org.apache.catalina.loader.WebappClassLoader.loadClass (webappclassloader.java:1680)
 Org.apache.catalina.loader.WebappClassLoader.loadClass (webappclassloader.java:1526)
 Org.apache.catalina.valves.ErrorReportValve.invoke (errorreportvalve.java:103)
 Org.apache.catalina.connector.CoyoteAdapter.service (coyoteadapter.java:293)
 Org.apache.coyote.http11.Http11Processor.process (http11processor.java:861)
 Org.apache.coyote.http11.http11protocol$http11connectionhandler.process (http11protocol.java:606)
 Org.apache.tomcat.util.net.jioendpoint$worker.run (jioendpoint.java:489)
 Java.lang.Thread.run (Unknown Source )

Solution:

This problem still occurs when you determine that the Servlet class is written correctly and that the configuration file is correct:

Preparation: See if the. class file is normally generated under the \web-inf\classes directory, if not generated, continue to the next step

First step: Empty project-> Clean Project

Step two: Empty the Tomcat cache-> the corresponding directory file \work\catalina\localhost the corresponding project

Step three: Re-publish the project

Thank you for reading, I hope to help you, thank you for your support for this site!