DWR 2.0 老是报未定义的错!~_Java Web开发

DWR 2.0 老是报未定义的错!~

tomcat 6.0 +Myeclipse+eclipse 3.2

Hello类:
package com.svse.bao;
public class Hello
{
    public void hello()
    {
        System.out.print("hello");
    }
}

Web.xml:
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.4"
    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">
      <servlet>
        <servlet-name>dwr-invoker</servlet-name>
        <servlet-class>org.directwebremoting.servlet.DwrServlet</servlet-class>
    </servlet>

    <servlet-mapping>
        <servlet-name>dwr-invoker</servlet-name>
        <url-pattern>/dwr/*</url-pattern>
    </servlet-mapping>

  <welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
  </welcome-file-list>
</web-app>

上面的没错吧!

dwr.xml:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE dwr PUBLIC "-//GetAhead Limited//DTD Direct Web Remoting 1.0//EN" "dwr10.dtd" >
<dwr>
    <allow>
        <create creator="new" javascript="Hello">
            <param name="class" value="com.svse.bao.Hello"></param>
        </create>
    </allow>
</dwr>

index.jsp
<%@ page language="java" import="java.util.*" pageEncoding="ISO-8859-1"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <base href="<%=basePath%>">

    <title>My JSP 'index.jsp' starting page</title>
    <meta http-equiv="pragma" content="no-cache">
    <meta http-equiv="cache-control" content="no-cache">
    <meta http-equiv="expires" content="0">
    <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
    <meta http-equiv="description" content="This is my page">
    

          //要倒的三个js
           //
    <script type="text/javascript" src="dwr/engine.js"></script>
    <script type="text/javascript"  src="dwr/util.js"></script>
    <script type="text/javascript" src="dwr/interface/Hello.js"></script>
   //要说Hello未定义

<script type="text/javascript">
         function hello()
         {
               //要说Hello未定义,我放了个alert这!~程序到这之后就不跑了!~

             Hello.hello();
         }
    </script>

  </head>

  <body>
    <input type="button" value="test" onclick="hello()">
  </body>
</html>

控制台:

2008-10-14 22:23:32 org.apache.catalina.core.ApplicationContext log
严重: StandardWrapper.Throwable
java.lang.NoClassDefFoundError: org/apache/commons/logging/LogFactory
    at org.directwebremoting.dwrp.PollHandler.<clinit>(PollHandler.java:443)
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Class.java:164)
    at org.directwebremoting.impl.ContainerUtil.class$(ContainerUtil.java:97)
    at org.directwebremoting.impl.ContainerUtil.setupDefaults(ContainerUtil.java:150)
    at org.directwebremoting.impl.ContainerUtil.setupDefaultContainer(ContainerUtil.java:125)
    at org.directwebremoting.servlet.DwrServlet.init(DwrServlet.java:73)
    at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1172)
    at org.apache.catalina.core.StandardWrapper.allocate(StandardWrapper.java:808)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:129)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286)
    at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:845)
    at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
    at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
    at java.lang.Thread.run(Thread.java:595)

搜索更多相关主题的帖子: DWR 定义

----------------解决方案--------------------------------------------------------
我这有个那时照着文档做的例子
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回复 2# guoxhvip 的帖子

谢谢版主!~
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没有加common-logging包。。。。
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有可能是dwr的dwr.js或util.js文件有问题以前我也遇到过类似情况重新下载了个dwr包把两个js文件重新放一次就行了
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