Tomcat報錯：HTTP Status 500，tomcatstatus

Tomcat報錯：HTTP Status 500，tomcatstatus

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)

解決方案：

在確定servlet類編寫正確，及配置文件正確的情況下，仍舊出現如上問題：

准備工作：查看\WEB-INF\classes目錄下是否正常生成.class文件，如未生成，繼續下一步

第一步：清空project—>  clean project

第二步：清空tomcat緩存—>  對應目錄\work\Catalina\localhost 下相應工程的目錄文件

第三步：重新發布工程