spring注入失败有关问题，再不搞定小弟我年都过不好了——不要让这100分荒废了

spring注入失败问题，再不搞定我年都过不好了——不要让这100分荒废了
SSI框架研究了N久后，开始试着搭建简单的小功能，经历的什么找不到，那个不可以，这个定义不正确等等让人崩溃的异常后，终于是有个页面出来了，但我一点，你妹的有给了我个空指针异常！！！

折腾近两天了，发现该异常是由于spring依赖注入没有成功导致的，但看配置文件看了几百遍都没有看出错在哪里……
现贴出配置文件如下：
web.xml

XML code

<?xml version="1.0" encoding="UTF-8"?>
<web-app id="WebApp_9" 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">

    <!-- 配置Spring -->
     <context-param>
      <param-name>contextConfigLocation</param-name>
        <param-value>
       classpath:/applicationContext.xml
      </param-value>
     </context-param>
     <listener>
      <listener-class>
       org.springframework.web.context.ContextLoaderListener
      </listener-class>
     </listener>
 
    <display-name>Struts Blank</display-name>

    <filter>
        <filter-name>struts2</filter-name>
        <filter-class>org.apache.struts2.dispatcher.FilterDispatcher</filter-class>
    </filter>

    <filter-mapping>
        <filter-name>struts2</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

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

</web-app>

struts.xml

XML code

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
    "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
    "http://struts.apache.org/dtds/struts-2.0.dtd">
<struts>
    <constant name="struts.objectTypeDeterminer" value="notiger" />      
     <constant name="struts.objectFactory" value="spring" />   
     <constant name="struts.objectFactory.spring.autoWire" value="name" />  
     
    <package name="test" namespace="/test" extends="struts-default">
        
        <action name="select" class="test.User">
            <result>/test/result.jsp</result>
        </action>
        <!--
        <action name="insert" class="test.userDAO">
            <result>/test/result.jsp</result>
        </action>
        -->
    </package>
    
</struts>

applicationContext.xml

XML code

<?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:aop="http://www.springframework.org/schema/aop"
 xmlns:tx="http://www.springframework.org/schema/tx"
 
 xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
        http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.0.xsd
           http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.0.xsd">



    <bean id="dataSource"
      class="org.apache.commons.dbcp.BasicDataSource"
      destroy-method="close">
      <property name="driverClassName" value="oracle.jdbc.driver.OracleDriver" />
      <property name="url"
       value="jdbc:oracle:thin:@localhost:1521:orcl" />
      <property name="username" value="system" />
      <property name="password" value="+1101+" />
     </bean>
    
     <!-- spring的ibatis 配制 -->
    <bean id="sqlMapClient"
        class="org.springframework.orm.ibatis.SqlMapClientFactoryBean">
        <property name="configLocation" value="classpath:/sqlMapConfig.xml" />
        <property name="dataSource" ref="dataSource" />
    </bean>
    
    <!-- spring 的事务处理类配置 -->
    <bean id="transactionManager"
        class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource">
            <ref local="dataSource" />
        </property>
    </bean>
    
    <!-- 实体DAO类  -->
    <bean id="userDAO" class="test.UserDAO">
        <property name="sqlMapClient">
            <ref local="sqlMapClient" />
        </property>
    </bean>
    
    
    <!-- Struts2 action类 -->
    <bean id="user" class="test.User" >
        <property name="userdao">
            <ref bean="userDAOProxy"/>
        </property>
    </bean>
    
    
    <bean id="name" class="test.User">
        <property name="name" value="张大三"/>
    </bean>


    
    <!-- 实体DAO类的代理类 -->
    <bean id="userDAOProxy"  
        class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean">
        <property name="transactionManager">
            <ref bean="transactionManager" />
        </property>
        <property name="target">
            <ref local="userDAO" />
        </property>
        <property name="transactionAttributes">
            <props>
                <prop key="insert*">PROPAGATION_REQUIRED</prop>
                <prop key="select*">PROPAGATION_REQUIRED</prop>
                <prop key="delete*">PROPAGATION_REQUIRED</prop>
                <prop key="update*">PROPAGATION_REQUIRED</prop>
                <prop key="get*">PROPAGATION_REQUIRED,readOnly</prop>
            </props>
        </property>
    </bean>
</beans>