Type Exception report

The message Error instantiating servlet class com. Java1234. Web. HelloWorldServlet

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

The exception

Javax.mail. Servlet. ServletException: Error instantiating servlet class. Com java1234. Web. HelloWorldServlet
Org. Apache. Catalina. The authenticator. AuthenticatorBase. Invoke (AuthenticatorBase. Java: 472)
Org. Apache. Catalina. Valves. ErrorReportValve. Invoke (ErrorReportValve. Java: 99)
Org. Apache. Catalina. Valves. AccessLogValve. Invoke (AccessLogValve. Java: 936)
Org. Apache. Catalina. Connector. CoyoteAdapter. Service (407) CoyoteAdapter. Java:
Org. Apache. Coyote. Http11. AbstractHttp11Processor. Process (1004) AbstractHttp11Processor. Java:
Org. Apache. Coyote. AbstractProtocol $AbstractConnectionHandler. Process (589) AbstractProtocol. Java:
Org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run JIoEndpoint. Java: (310)
Java. Util. Concurrent. ThreadPoolExecutor. RunWorker (ThreadPoolExecutor. Java: 1142)
Java. Util. Concurrent. ThreadPoolExecutor $Worker. The run (ThreadPoolExecutor. Java: 617)
Java. Lang. Thread. The run (745) Thread. Java:
Root cause

Java. Lang. ClassNotFoundException: com. Java1234. Web. HelloWorldServlet
Org. Apache. Catalina. Loader. WebappClassLoader. LoadClass (WebappClassLoader. Java: 1714)
Org. Apache. Catalina. Loader. WebappClassLoader. LoadClass (WebappClassLoader. Java: 1559)
Org. Apache. Catalina. The authenticator. AuthenticatorBase. Invoke (AuthenticatorBase. Java: 472)
Org. Apache. Catalina. Valves. ErrorReportValve. Invoke (ErrorReportValve. Java: 99)
Org. Apache. Catalina. Valves. AccessLogValve. Invoke (AccessLogValve. Java: 936)
Org. Apache. Catalina. Connector. CoyoteAdapter. Service (407) CoyoteAdapter. Java:
Org. Apache. Coyote. Http11. AbstractHttp11Processor. Process (1004) AbstractHttp11Processor. Java:
Org. Apache. Coyote. AbstractProtocol $AbstractConnectionHandler. Process (589) AbstractProtocol. Java:
Org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run JIoEndpoint. Java: (310)
Java. Util. Concurrent. ThreadPoolExecutor. RunWorker (ThreadPoolExecutor. Java: 1142)
Java. Util. Concurrent. ThreadPoolExecutor $Worker. The run (ThreadPoolExecutor. Java: 617)
Java. Lang. Thread. The run (745) Thread. Java:
Note The full stack trace of The root cause is available in The Apache Tomcat/7.0.34 logs.

CodePudding user response:

https://blog.csdn.net/weixin_42476601/article/details/80992900

CodePudding user response:

Stick down your code