spring配置bean注入为空的问题，求帮助

自己写了一个小demo准备玩玩的。flex+spring+ibatis 结果刚开发，就碰到了个困难，试了好久，始终不如意。我想把spring配置文件放到WEB-INF下的conf文件夹里。把一些bean的配置文件放到WEB-INF下的beanConf文件夹里. 小程序测试的时候，发现BookController里的bookService总为空。试了很多方法，始终不知道如何解决。请帮忙，贴出代码：目录结构：

web.xml

<?xml version="1.0" encoding="UTF-8"?>
<!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>FirstFlex</display-name>
    <description>BlazeDS Application</description>

	<context-param>
		<param-name>flex.class.path</param-name>
		<param-value>/WEB-INF/flex/hotfixes,/WEB-INF/flex/jars</param-value>
	</context-param>
	
	<!-- 加载Spring文件配置 -->
	<context-param>
		<param-name>contextConfigLocation</param-name>
		<param-value>
			/WEB-INF/conf/demo_applicationContext.xml,/WEB-INF/beanConf/*.bean.xml
		</param-value>
	</context-param>
	
	<listener>
		<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
	</listener>

    <!-- Http Flex Session attribute and binding listener support -->
    <listener>
        <listener-class>flex.messaging.HttpFlexSession</listener-class>
    </listener>

    <!-- MessageBroker Servlet -->
    <servlet>
        <servlet-name>MessageBrokerServlet</servlet-name>
        <display-name>MessageBrokerServlet</display-name>
        <servlet-class>flex.messaging.MessageBrokerServlet</servlet-class>
        <init-param>
            <param-name>services.configuration.file</param-name>
            <param-value>/WEB-INF/flex/services-config.xml</param-value>
       </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>

    <servlet-mapping>
        <servlet-name>MessageBrokerServlet</servlet-name>
        <url-pattern>/messagebroker/*</url-pattern>
    </servlet-mapping>

    <welcome-file-list>
        <welcome-file>index.html</welcome-file>
        <welcome-file>index.htm</welcome-file>
    </welcome-file-list>

    <!-- for WebSphere deployment, please uncomment -->
    <!--
    <resource-ref>
        <description>Flex Messaging WorkManager</description>
        <res-ref-name>wm/MessagingWorkManager</res-ref-name>
        <res-type>com.ibm.websphere.asynchbeans.WorkManager</res-type>
        <res-auth>Container</res-auth>
        <res-sharing-scope>Shareable</res-sharing-scope>
    </resource-ref>
    -->

</web-app>

demo_applicationContext.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans
	xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd">

	<!-- 数据源配置 -->
	<bean id="dataSource_config" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
		<property name="location">
			<value>classpath:dataBaseContext.properties</value>
		</property>
	</bean>
	 
	<bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
	    <property name="driverClassName">
	        <value>${datasource.driverClassName}</value>
	    </property>
	    <property name="url">
        	<value>${datasource.url}</value>
	    </property>
	    <property name="username">
	        <value>${datasource.username}</value>
	    </property>
	    <property name="password">
	        <value>${datasource.password}</value>
	    </property>
	</bean>
	
	<bean id="sqlMapClient"
        class="org.springframework.orm.ibatis.SqlMapClientFactoryBean">
	    <property name="configLocation">
	    	<value>/WEB-INF/classes/sqlmap-config.xml</value>
	    </property>
	    <property name="dataSource">
	    	<ref bean="dataSource"/>
	    </property>  
	 </bean>
	 
	<bean id="sqlMapClientTemplate" class="org.springframework.orm.ibatis.SqlMapClientTemplate">
	    <property name="sqlMapClient">
	        <ref bean="sqlMapClient" />
	    </property>
	</bean>
	
	<!-- 业务指标定义 -->
	<bean id="bookController"
		class="com.crud.controller.BookController">
		<property name="bookService"
			ref="bookService">
		</property>
		<!-- <property name="sybasejdbcTemplate" ref="sybasejdbcTemplate"/> -->
	</bean>
	<bean id="bookService"
		class="com.crud.service.impl.BookServiceImpl">
		<property name="sqlMapClientTemplate">
        	<ref bean="sqlMapClientTemplate" />
    	</property>
	</bean>
	
</beans>

BookController.java

package com.crud.controller;

import java.util.List;
import java.util.UUID;

import com.crud.model.Book;
import com.crud.service.BookService;
import com.crud.service.impl.BookServiceImpl;

public class BookController {
	
	private BookService bookService;
	
	public List<Book> findBooks(){
		return bookService.findBook();
	}
	
	public String addBook(Book book){
		//bookService = new BookServiceImpl();
		System.out.println("addBook");
		System.out.println(bookService);
		book.setId(UUID.randomUUID().toString());
		String temp = bookService.addBook(book);
		System.out.println(bookService);
		return temp;
	}
	
	public void updateBook(Book book){
		
	}
	
	public void deleteBook(Book book){
		
	}

	public BookService getBookService() {
		return bookService;
	}

	public void setBookService(BookService bookService) {
		this.bookService = bookService;
	}
}

BookService.java

package com.crud.service.impl;

import java.util.List;

import org.springframework.orm.ibatis.SqlMapClientTemplate;

import com.crud.model.Book;
import com.crud.service.BookService;

public class BookServiceImpl implements BookService {
	
	private SqlMapClientTemplate sqlMapClientTemplate;

	public String addBook(Book book) {
		System.out.println(sqlMapClientTemplate);
		sqlMapClientTemplate.insert("addBook",book);
		return "1";
	}

	public void deleteBook(Book book) {

	}

	public List<Book> findBook() {
		
		List<Book> list = sqlMapClientTemplate.queryForList("bookInfo");
		return list;
	}

	public String updateBook(Book book) {
		return null;
	}

	public SqlMapClientTemplate getSqlMapClientTemplate() {
		return sqlMapClientTemplate;
	}

	public void setSqlMapClientTemplate(SqlMapClientTemplate sqlMapClientTemplate) {
		this.sqlMapClientTemplate = sqlMapClientTemplate;
	}

}

每次BookController.java里的addBook() 里的bookService都是null，
工程在附件里，求帮助