Tomcat报错：HTTP Status 500 （Wrapper cannot find servlet class)解决办法

tomcat报错：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 report

message wrapper cannot find servlet class com.servlet.servlet.regservlet or a class it depends on

description the server encountered an internal error that 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
 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)

解决方案：

在确定servlet类编写正确，及配置文件正确的情况下，仍旧出现如上问题：

准备工作：查看\web-inf\classes目录下是否正常生成.class文件，如未生成，继续下一步

第一步：清空project—>  clean project

第二步：清空tomcat缓存—>  对应目录\work\catalina\localhost 下相应工程的目录文件

第三步：重新发布工程

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