我正在编写一个网络应用程序并将其部署到 apache tomcat 网络容器。我按照 http://cse.csusb.edu/turner/java_web_programming/servlets/ 中的简单教程进行操作

然后最终得到这个错误。我正在分别粘贴 web.xml、website.xml 和我的代码文件的片段。

结构:

web.xml:

<?xml version="1.0"?> 
<web-app 
     xmlns="http://java.sun.com/xml/ns/j2ee" 
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
     xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee  
        http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd" 
     version="2.4"> 
   <servlet> 
      <servlet-name>home</servlet-name> 
      <servlet-class>website.web.HomeServlet</servlet-class> 
   </servlet> 
   <servlet-mapping> 
      <servlet-name>home</servlet-name> 
      <url-pattern>/home</url-pattern> 
   </servlet-mapping> 
</web-app> 

首页Servlet.java

打包网站.web;

import java.io.IOException; 
import java.io.PrintWriter; 
import javax.servlet.ServletException; 
import javax.servlet.ServletRequest; 
import javax.servlet.ServletResponse; 
import javax.servlet.http.HttpServlet; 
import javax.servlet.http.HttpServletRequest; 
import javax.servlet.http.HttpServletResponse; 
 
public class HomeServlet extends HttpServlet { 
 
    @Override 
    protected void doGet(HttpServletRequest req, HttpServletResponse resp)  
               throws ServletException, IOException { 
                  PrintWriter writer = resp.getWriter(); 
                  writer.println("<h1>Hello, World!</h1>"); 
               }         
} 

错误:

HTTP Status 500 - Error instantiating servlet class website.web.HomeServlet 
 
type Exception report 
 
message Error instantiating servlet class website.web.HomeServlet 
 
description The server encountered an internal error that prevented it from fulfilling this request. 
 
exception 
 
javax.servlet.ServletException: Error instantiating servlet class website.web.HomeServlet 
    org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502) 
    org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79) 
    org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:610) 
    org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:518) 
    org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1091) 
    org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:668) 
    org.apache.coyote.http11.Http11NioProtocol$Http11ConnectionHandler.process(Http11NioProtocol.java:223) 
    org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1517) 
    org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1474) 
    java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) 
    java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) 
    org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) 
    java.lang.Thread.run(Thread.java:745) 
root cause 
 
java.lang.ClassNotFoundException: website.web.HomeServlet 
    org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1305) 
    org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1157) 
    org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502) 
    org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79) 
    org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:610) 
    org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:518) 
    org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1091) 
    org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:668) 
    org.apache.coyote.http11.Http11NioProtocol$Http11ConnectionHandler.process(Http11NioProtocol.java:223) 
    org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1517) 
    org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1474) 
    java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) 
    java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) 
    org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) 
    java.lang.Thread.run(Thread.java:745)