在Eclipse中配置Velocity tools总是出现异常

[zjwsh]

我安装的是在Eclipse，用的是velocity-1.4和velocity-tools-1.1，在用Velocity过程中配置上toolbox老出现异常
我的web.xml为

      <servlet>
		<servlet-name>velocity</servlet-name>
		<servlet-class>
			org.apache.velocity.tools.view.servlet.VelocityViewServlet
		</servlet-class>
		<init-param>
			<param-name>org.apache.velocity.toolbox</param-name>
			<param-value>/WEB-INF/toolbox.xml</param-value>
		</init-param>
		<init-param>
			<param-name>org.apache.velocity.properties</param-name>
			<param-value>/WEB-INF/velocity.properties</param-value>
		</init-param>
		<load-on-startup>10</load-on-startup>
	</servlet>
        <servlet-mapping>
		<servlet-name>velocity</servlet-name>
		<url-pattern>*.vm</url-pattern>
	</servlet-mapping>

但是进行访问vm页面，出现异常
javax.servlet.ServletException: Servlet.init() for servlet velocity threw exception
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:683)
java.lang.Thread.run(Thread.java:595)

java.lang.NoClassDefFoundError: org/apache/commons/lang/StringUtils
org.apache.velocity.runtime.resource.ResourceManagerImpl.initialize(ResourceManagerImpl.java:165)
org.apache.velocity.runtime.RuntimeInstance.initializeResourceManager(RuntimeInstance.java:594)
org.apache.velocity.runtime.RuntimeInstance.init(RuntimeInstance.java:241)
org.apache.velocity.app.VelocityEngine.init(VelocityEngine.java:116)
org.apache.velocity.tools.view.servlet.VelocityViewServlet.initVelocity(VelocityViewServlet.java:380)
org.apache.velocity.tools.view.servlet.VelocityViewServlet.init(VelocityViewServlet.java:209)
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:683)
java.lang.Thread.run(Thread.java:595)
这是怎么回事啊？

[zjwsh]

对不起，上面的异常粘贴错了，应该是下面的内容
javax.servlet.ServletException: Servlet.init() for servlet velocity threw exception
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:683)
java.lang.Thread.run(Thread.java:595)


root cause

java.lang.NoClassDefFoundError: org/apache/commons/digester/RuleSet
org.apache.velocity.tools.view.servlet.VelocityViewServlet.initToolbox(VelocityViewServlet.java:231)
org.apache.velocity.tools.view.servlet.VelocityViewServlet.init(VelocityViewServlet.java:174)
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:683)
java.lang.Thread.run(Thread.java:595)

[zjwsh]

没人遇见过吗

[zjwsh]

解决了，除了velocity-1.4和velocity-tools-1.1外，还需要一些包，把所需要的包加进去就可以