请各位高手帮忙解决..There is no Action mapped for namespace /hello,万分感谢!

<?xml version="1.0" encoding="UTF-8" ?>

<!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.1//EN" "http://struts.apache.org/dtds/struts-2.1.dtd">

<struts>



	<package name="demo" extends="struts-default" namespace="/hello">

		<action name="demo*" class="demoAction" method="{1}">

			<result name="doDemoQuery">/jsp/demoList.jsp</result>

		</action>

	</package>



</struts> 

<?xml version="1.0" encoding="UTF-8"?>

<web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee"

	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

	xsi:schemaLocation="http://java.sun.com/xml/ns/javaee 

	http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">

	<welcome-file-list>

		<welcome-file>index.jsp</welcome-file>

	</welcome-file-list>

	<filter>

		<filter-name>struts2</filter-name>

		<filter-class>

			org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>

		<init-param>

			<param-name>config</param-name>

			<param-value>

				struts-default.xml,struts-plugin.xml,struts*.xml

			</param-value>

		</init-param>

	</filter>

	<filter-mapping>

		<filter-name>struts2</filter-name>

		<url-pattern>*.action</url-pattern>

	</filter-mapping>



	<!-- 配置CharacterEncoding，设置字符集 -->

	<filter>

		<filter-name>characterEncodingFilter</filter-name>

		<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>

		<init-param>

			<param-name>encoding</param-name>

			<param-value>UTF-8</param-value>

		</init-param>

		<init-param>

			<param-name>forceEncoding</param-name>

			<param-value>true</param-value>

		</init-param>

	</filter>



	<filter-mapping>

		<filter-name>characterEncodingFilter</filter-name>

		<url-pattern>/*</url-pattern>

	</filter-mapping>





	<!-- Spring 配置和监听start -->

	<context-param>

		<param-name>contextConfigLocation</param-name>

		<param-value>/WEB-INF/classes/application*.xml</param-value>

	</context-param>

	<listener>

		<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>

	</listener>

	<!-- end -->



</web-app>

package com.demo.action;



import java.util.List;



import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.stereotype.Controller;



import com.demo.pojo.Demo;

import com.demo.services.DemoServices;

import com.opensymphony.xwork2.ActionSupport;

import com.weichai.wserviceline.base.util.Pager;



@Controller

public class DemoAction extends ActionSupport {



	/**

	 * 

	 */

	private static final long serialVersionUID = 1L;

	

	@Autowired

	private DemoServices demoServices;

	

	private Pager pager = new Pager();

	

	private List<Demo> demoList;

	

	public String doDemoQuery() {

		demoList = demoServices.queryDemos(pager);

		return "doDemoQuery";

	}



	/**

	 * method for get and set

	 * */

	public Pager getPager() {

		return pager;

	}



	public void setPager(Pager pager) {

		this.pager = pager;

	}



	public List<Demo> getDemoList() {

		return demoList;

	}



	public void setDemoList(List<Demo> demoList) {

		this.demoList = demoList;

	}



}

<?xml version="1.0" encoding="UTF-8"?>

<beans xmlns="http://www.springframework.org/schema/beans"

	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context"

	xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"

	xmlns:task="http://www.springframework.org/schema/task"

	xsi:schemaLocation="http://www.springframework.org/schema/beans

         http://www.springframework.org/schema/beans/spring-beans-3.0.xsd

         http://www.springframework.org/schema/context

         http://www.springframework.org/schema/context/spring-context-3.0.xsd

         http://www.springframework.org/schema/tx

      	 http://www.springframework.org/schema/tx/spring-tx-3.0.xsd

         http://www.springframework.org/schema/aop

         http://www.springframework.org/schema/aop/spring-aop-3.0.xsd

         http://www.springframework.org/schema/task 

         http://www.springframework.org/schema/task/spring-task-3.0.xsd">



	<!-- 启用spring注解支持 -->

	<context:annotation-config />



	<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource">

		<property name="driverClassName" value="oracle.jdbc.OracleDriver">

		</property>

		<property name="url" value="jdbc:oracle:thin:@192.168.1.183:1521/WSLDEV">

		</property>

		<property name="username" value="wsladmin"></property>

		<property name="password" value="password"></property>

	</bean>

	<bean id="sessionFactory"

		class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">

		<property name="dataSource">

			<ref bean="dataSource" />

		</property>

		<property name="hibernateProperties">

			<props>

				<prop key="hibernate.dialect">

					org.hibernate.dialect.Oracle9Dialect

				</prop>

			</props>

		</property>

	</bean>



	<!--

		定义事务处理类，不同的数据访问方式，事务处理类不同

		比如：Hibernate操作的HibernateTransactionManager，JDBC操作的使用DataSourceTransactionManager

	-->

	<bean id="transactionManager"

		class="org.springframework.jdbc.datasource.DataSourceTransactionManager">

		<property name="dataSource" ref="dataSource"></property>

	</bean>



	<!-- 定义事务通知 -->

	<tx:advice id="txAdvice" transaction-manager="transactionManager">

		<!-- 定义方法的过滤规则 -->

		<tx:attributes>

			<!-- 所有方法都使用事务 -->

			<tx:method name="*" propagation="REQUIRED" />

			<!-- 定义所有get开头的方法都是只读的 -->

			<tx:method name="get*" read-only="true" />

		</tx:attributes>

	</tx:advice>



	<!-- 定义AOP配置 -->

	<aop:config>

		<!-- 定义一个切入点 -->

		<aop:pointcut expression="execution (* com.demo.dao.*.*(..))"

			id="services" />

		<!-- 对切入点和事务的通知，进行适配 -->

		<aop:advisor advice-ref="txAdvice" pointcut-ref="services" />

	</aop:config>



</beans>

<!-- 将对象交给spring管理 -->

<constant name="struts.objectFactory" value="spring" />

   <init-param>

            <param-name>struts.convention.action.packages</param-name>

            <param-value>cn.damai.mplus.activity.channel.action</param-value>

        </init-param>

补充：Java ,  Java SE

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