求救！Servlet运行出错！Wrapper cannot find servlet class 我快疯了
编写了一个简单的Servlet，HelloWorld.java
package test;
import java.io.*;
import java.text.*;
import java.util.*;
import javax.servlet.*;
import javax.servlet.http.*;
public class HelloWorld extends HttpServlet
{
public void doGet(HttpServletRequest request,HttpServletResponse response)
throws IOException,ServletException
{
response.setContentType( "text/html ");
PrintWriter out = response.getWriter();out.println( " <html> ");
out.println( " <head> ");
out.println( " <title> HelloWorld </title> ");
out.println( " </head> ")
out.println( " <body> HelloWorld </body> ");
out.println( " </html> ");
}
}
环境变量
JAVA_HOME=C:\j2sdk1.4.2_13
CATALINA_HOME=C:\Program Files\Apache Software Foundation\Tomcat 5.0
CLASSPATH=C:\j2sdk1.4.2_13\lib\dt.jar;C:\j2sdk1.4.2_13\lib\tool.jar;C:\j2sdk1.4.2_13\lib\tools.jar;C:\Program Files\Apache Software Foundation\Tomcat 5.0\common\lib\servlet-api.jar;C:\Program Files\Apache Software Foundation\Tomcat 5.0\common\lib\jsp-api.jar
Path=C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\j2sdk1.4.2_13\bin
将编译完后的HelloWorld.class放入%CATLINA_HOME%\webapps\servlet\WEB-INF\classses\test\目录下
并且修改了servlet\WEB-INF\下的web.xml
<?xml version= "1.0 " encoding= "ISO-8859-1 "?>
<!DOCTYPE web-app
PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN "
"http://java.sun.com/dtd/web-app_2_3.dtd ">
<web-app>
<display-name> my program </display-name>
<description>
test
</description>
<servlet>
<servlet-name> HelloWorld </servlet-name>
<display-name> HelloWorld </display-name>
<description> A test Servlet </description>
<servlet-class> test.HelloWorld </servlet-class>
</servlet>
<servlet-mapping>
<servlet-name> HelloWorld </servlet-name>
<url-pattern> /HelloWorld </url-pattern>
</servlet-mapping>
</web-app>
重新启动Tomcat,但是在浏览器中输入http://127.0.0.1:8080/webapps/servlet/HelloWorld
出现下面的错误
type Exception report
message
description The server encountered an internal error () that prevented it from fulfilling this request.
exception
javax.servlet.ServletException: Wrapper cannot find servlet class test.HelloWorld or a class it depends on
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:118)
org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:160)
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:799)
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:705)
org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:577)
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
java.lang.Thread.run(Thread.java:534)
root cause
java.lang.ClassNotFoundException: test.HelloWorld
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1340)
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1189)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:118)
org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:160)
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:799)
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:705)
org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:577)
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
java.lang.Thread.run(Thread.java:534)
note The full stack trace of the root cause is available in the Apache Tomcat/5.0.29 logs.
无法定位class文件啊，郁闷啊，上次写javabean时也是类似的错误，也找不带class文件，但是我的class文件已经放在相应文件夹下了啊，我都快疯了。。。。大家救救我啊
[解决办法]
基本上是没有错， 不过你
应该在浏览器中输入http://127.0.0.1:8080/servlet/HelloWorld
[解决办法]
servlet才是你的服务目录
[解决办法]
Web.xml配置没问题，servlet也没问题，
如果你没有去改动tomcat本身的配置文件的话，你就按楼上所讲的一样，输入http://127.0.0.1:8080/servlet/HelloWorld
[解决办法]
错误提示就是找不到HelloWorld类，就是路径输错了，不应该要webapps
[解决办法]
ls几位都是正确的，webapps这个目录是不需要的
我的异常网推荐解决方案：The server encountered an internal error () that prevented it from fulfilling this request.,http://www.myexception.cn/java-web/317.html
