请教我的spring为何无法使用annotation减少xml中DAO的配置？？

Question

各位CSDN的朋友们，你们好。最近刚刚使用spring2.5.6 感觉不错
本人想使用annotation减少spring bean的配置，尤其是DAO的配置，在我的项目中有许多DAO，因此想使用注释的方式来减少XML中的配置我的写法如下
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" 
xmlns:context="http://www.springframework.org/schema/context" 
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-2.5.xsd 
http://www.springframework.org/schema/aop 
http://www.springframework.org/schema/aop/spring-aop-2.5.xsd 
http://www.springframework.org/schema/tx 
http://www.springframework.org/schema/tx/spring-tx-2.5.xsd 
http://www.springframework.org/schema/context 
http://www.springframework.org/schema/context/spring-context-2.5.xsd"> 
<context:component-scan base-package="com.zhekou" />
<!-- dataSource config -->
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
  <property name="driverClassName">
   <value>com.mysql.jdbc.Driver</value>
  </property>
  <property name="url">
   <value>jdbc:mysql://127.0.0.1:3306/zhekou</value>
  </property>
  <property name="username">
   <value>root</value>
  </property>
  <property name="password">
   <value>admin</value>
  </property>
 </bean>
 
 <!-- 该 BeanPostProcessor 将自动起作用，对标注 @Autowired 的 Bean 进行自动注入 -->
 <bean class="org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor"/>
 
<!-- SessionFactory -->
<bean id="sessionFactory"
class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean"> 
<property name="dataSource">
<ref bean="dataSource"/>
</property> 
<property name="mappingResources">
   <list> 
  <value>com/zhekou/composit/model/City.hbm.xml</value>
    <value>com/zhekou/composit/model/Region.hbm.xml</value>
<value>com/zhekou/composit/model/Community.hbm.xml</value>
<value>com/zhekou/user/model/Userspace.hbm.xml</value>
<value>com/zhekou/user/model/User.hbm.xml</value>
<value>com/zhekou/user/model/Userinfo.hbm.xml</value>
<value>com/zhekou/user/model/Userpermission.hbm.xml</value> 
<value>com/zhekou/store/model/Crossedstore.hbm.xml</value>
<value>com/zhekou/store/model/Store.hbm.xml</value>
<value>com/zhekou/store/model/Storeinfo.hbm.xml</value>
<value>com/zhekou/store/model/Firststorekind.hbm.xml</value>
<value>com/zhekou/store/model/Storekind.hbm.xml</value>
<value>com/zhekou/visitor/model/Storevisitor.hbm.xml</value>
<value>com/zhekou/dynamic/model/Dynamic.hbm.xml</value>
<value>com/zhekou/map/model/StoreMap.hbm.xml</value>
 </list>
  </property>
  <property name="hibernateProperties">
   <props>
    <prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop>
    <prop key="hibernate.show_sql">true</prop> 
  <prop key="hibernate.generate_statistics">true</prop>   
      <prop key="hibernate.cache.use_query_cache">true</prop>   
      <prop key="hibernate.cache.use_second_level_cache">true</prop>   
      <prop key="hibernate.cache.provider_class">org.hibernate.cache.EhCacheProvider</prop>   
      <prop key="hibernate.cache.configurationResourceName">ehcache.xml</prop>       
   </props>
  </property> 
 
</bean>  <!-- 模糊匹配需要拦截的方法 -->
  <tx:advice id="txAdvice" transaction-manager="transactionManager">
      <tx:attributes>
          <tx:method name="save*" propagation="REQUIRED" />
          <tx:method name="update*" propagation="REQUIRED" />
          <tx:method name="delete*" propagation="REQUIRED" />
          <tx:method name="*" read-only="true" />
      </tx:attributes>
    </tx:advice>
    
    <!-- 那些类的哪些方法参与事务 -->
    
    <aop:config>
        <!-- <aop:pointcut id="allServiceMethod" expression="execution(* com.zhekou.region.dao.*.*.*(..))" /> -->
        <aop:pointcut id="allServiceMethod" expression="execution(* com.zhekou.*.dao.*.*(..))" />
        
        <aop:advisor pointcut-ref="allServiceMethod" advice-ref="txAdvice" />
    </aop:config>
    
  
 
   <!--   定义事务管理器，使用适用于Hibernte的事务管理器-->
  <bean id="transactionManager"
      class="org.springframework.orm.hibernate3.HibernateTransactionManager">
        <!--   HibernateTransactionManager   bean需要依赖注入一个SessionFactory bean的引用-->
        <property name="sessionFactory">
            <ref local="sessionFactory" />
        </property>
    </bean>
    
    <!-- 使Spring关注Annotation -->
    <context:annotation-config/>
    
 
</beans>
在DAO实现类的写法
@Repository("storeDAO")
public class StoreDAOImpl extends HibernateDaoSupport implements StoreDAO在SERVICE实现类的写法
@Service("storeService")
@Transactional 
public class StoreServiceImpl extends BaseService implements StoreService{
@Autowired 
private StoreDAO storeDAO ;在ACTION中的写法
StoreService storeService = (StoreService)getWebApplicationContext().getBean("storeService");
如果我这样没在XML里配置storeDAO的话 那么就会出错误，下面是错误信息，相反如果配置了storeDAO,并且把sessionFactory注入进去就不会出错，就像这样就不会出错了
<bean id="storeDAO" class="com.zhekou.store.dao.impl.StoreDAOImpl">
  <property name="sessionFactory">
   <ref local="sessionFactory" />
  </property>
  </bean>
 请教各位为何出错？如何解决？我想让我的配置文件中没有一行DAO的配置。。

Answer 1

未在APPLICATIONCONTEXT.XML中配置STOREDAO 出的错误 是
09:49:15,670 ERROR ContextLoaderPlugIn:229 - Context initialization failed
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'storeDAO' defined in file [E:\yangmh's work space\.metadata\.plugins\org.eclipse.wst.server.core\tmp2\wtpwebapps\zkjsp\WEB-INF\classes\com\zhekou\store\dao\impl\StoreDAOImpl.class]: Invocation of init method failed; nested exception is java.lang.IllegalArgumentException: 'sessionFactory' or 'hibernateTemplate' is required
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1338)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:473)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory$1.run(AbstractAutowireCapableBeanFactory.java:409)
at java.security.AccessController.doPrivileged(Native Method)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:380)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:264)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:261)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:185)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:164)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:429)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:728)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:380)
at org.springframework.web.struts.ContextLoaderPlugIn.createWebApplicationContext(ContextLoaderPlugIn.java:354)
at org.springframework.web.struts.ContextLoaderPlugIn.initWebApplicationContext(ContextLoaderPlugIn.java:295)
at org.springframework.web.struts.ContextLoaderPlugIn.init(ContextLoaderPlugIn.java:225)
at org.apache.struts.action.ActionServlet.initModulePlugIns(ActionServlet.java:871)
at org.apache.struts.action.ActionServlet.init(ActionServlet.java:359)
at javax.servlet.GenericServlet.init(GenericServlet.java:212)
at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1172)
at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:992)
at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:4058)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4371)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
at org.apache.catalina.core.StandardHost.start(StandardHost.java:719)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)
at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443)
at org.apache.catalina.core.StandardService.start(StandardService.java:516)
at org.apache.catalina.core.StandardServer.start(StandardServer.java:710)
at org.apache.catalina.startup.Catalina.start(Catalina.java:578)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:288)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413)
Caused by: java.lang.IllegalArgumentException: 'sessionFactory' or 'hibernateTemplate' is required
at org.springframework.orm.hibernate3.support.HibernateDaoSupport.checkDaoConfig(HibernateDaoSupport.java:117)
at org.springframework.dao.support.DaoSupport.afterPropertiesSet(DaoSupport.java:44)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1369)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1335)
... 35 more

Answer 2

<?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"
    xmlns:context="http://www.springframework.org/schema/context"
    xsi:schemaLocation="http://www.springframework.org/schema/beans 
http://www.springframework.org/schema/beans/spring-beans-2.5.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-2.5.xsd
    http://www.springframework.org/schema/context
    http://www.springframework.org/schema/context/spring-context-2.5.xsd"
    default-lazy-init="true">
<context:annotation-config />
<context:component-scan base-package="com.inventec.*"></context:component-scan>    <!-- EntityManagerFactory -->
    <bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
        <property name="persistenceUnitManager" ref="persistenceUnitManager"/>
        <property name="jpaProperties">
            <value>
                hibernate.dialect=org.hibernate.dialect.MySQL5InnoDBDialect
                hibernate.query.substitutions=true 'Y', false 'N'
                hibernate.cache.use_second_level_cache=true
                hibernate.cache.provider_class=org.hibernate.cache.EhCacheProvider
            </value>
            <!-- Turn batching off for better error messages under PostgreSQL -->
            <!-- hibernate.jdbc.batch_size=0 -->
        </property>
    </bean>    <bean id="persistenceUnitManager" class="org.springframework.orm.jpa.persistenceunit.DefaultPersistenceUnitManager">
        <property name="persistenceXmlLocations">
            <list>
                <value>classpath:META-INF/persistence.xml</value>
            </list>
        </property>
        <property name="defaultDataSource" ref="dataSource"/>
    </bean>    <!-- Needed so the @PersistenceUnit annotation is recognized -->
    <bean class="org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor"/>    <!-- Transaction manager for a single EntityManagerFactory (alternative to JTA) -->
    <bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
        <property name="entityManagerFactory" ref="entityManagerFactory" />
    </bean>

Answer 3

大致如以上，不小心少拷了</beans>，自己加吧。另外，用hibernate annotation得了，省的老写hibernate hbm文件。

Answer 4

多谢你的回复 但是我是使hibernate做持久层，你的是jpa的 ，所以只能继续等人了。

Answer 5

我也想不写hbm.xml，但是我按照网上的版本配置完 还是不成功。想把这个问题解决完之后再去解决那个

Answer 6

为什么不定义一个 Dao，里面定义一个 protected SessionFactory sessionFactory; 并生成set方法，让所有dao都继承这个Dao

Answer 7

还有一个为什么entity不用这么配置呢，spring提供了packagesToScan，自动扫描所有POJO的class
<bean id="sessionFactory"
class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="namingStrategy">
<bean class="org.hibernate.cfg.ImprovedNamingStrategy" />
</property>
<property name="hibernateProperties">
<props>
hibernate配置信息
</props>
</property>
<property name="packagesToScan">
<list>
<value>com.xxxxx.*.*</value>
</list>

</property>
</bean>

Answer 8

我想让我的配置文件中没有一行DAO的配置。。这个不会
一般这样配的<bean id="storeDAO" class="com.zhekou.store.dao.impl.StoreDAOImpl">
      <property name="sessionFactory">
       <ref local="sessionFactory" />
      </property>
     </bean>

Answer 9

楼主缺少几个关键的配置：<!-- 打开Spring注解驱动的Ioc -->
<context:annotation-config/><!-- 打开AOP织入功能 -->
<aop:aspectj-autoproxy proxy-target-class="true"/>
    
<!-- 打开Spring扫描创建Bean功能 -->
<context:component-scan base-package="你的包名"/>

Answer 10

我晕还是不成我的QQ是 122291891 。 大家加我QQ 分照给！！！

Answer 11

<?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:tx="http://www.springframework.org/schema/tx" xmlns:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="http://www.springframework.org/schema/beans 
           http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
           http://www.springframework.org/schema/context
           http://www.springframework.org/schema/context/spring-context-2.5.xsd
           http://www.springframework.org/schema/tx 
           http://www.springframework.org/schema/tx/spring-tx-2.5.xsd
           http://www.springframework.org/schema/aop    
           http://www.springframework.org/schema/aop/spring-aop-2.5.xsd"> <context:annotation-config />
<context:component-scan base-package="com.test.*" /> <bean id="dataSource" class="org.logicalcobwebs.proxool.ProxoolDataSource">
<property name="driver" value="com.mysql.jdbc.Driver" />
<property name="driverUrl" value="jdbc:mysql://localhost:3306/ibatisstudy?characterEncoding=UTF-8" />
<property name="user" value="root" />
<property name="password" value="111111" />
<property name="alias" value="demo-ds" />
<property name="maximumConnectionCount" value="10" />
<property name="minimumConnectionCount" value="2" />
</bean>

<tx:annotation-driven transaction-manager="txManager" /> <bean id="txManager" class="org.springframework.orm.jpa.JpaTransactionManager">
<property name="entityManagerFactory" ref="entityManagerFactory" />
</bean>
<bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="persistenceXmlLocation" value="/WEB-INF/persistence.xml"/>
<property name="jpaVendorAdapter">
<bean class="org.springframework.orm.jpa.vendor.OpenJpaVendorAdapter">
<property name="showSql" value="true" />
<property name="generateDdl" value="true"/> 
<property name="databasePlatform" value="org.apache.openjpa.jdbc.sql.MySQLDictionary" />
</bean>
</property>
<property name="loadTimeWeaver">
<bean class="org.springframework.instrument.classloading.SimpleLoadTimeWeaver" />
</property>
</bean>
<bean id="sBookDao" class="com.test.dao.SBookDao" autowire="byType"></bean>
</beans>

Answer 12

刚才贴错了jpa的<?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:tx="http://www.springframework.org/schema/tx" xmlns:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="http://www.springframework.org/schema/beans 
           http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
           http://www.springframework.org/schema/context
           http://www.springframework.org/schema/context/spring-context-2.5.xsd
           http://www.springframework.org/schema/tx 
           http://www.springframework.org/schema/tx/spring-tx-2.5.xsd
           http://www.springframework.org/schema/aop    
           http://www.springframework.org/schema/aop/spring-aop-2.5.xsd"> <context:annotation-config />
<context:component-scan base-package="com.vcm.*" /> <bean id="dataSource" class="org.logicalcobwebs.proxool.ProxoolDataSource">
<property name="driver" value="com.mysql.jdbc.Driver" />
<property name="driverUrl" value="jdbc:mysql://localhost:3306/ibatisstudy?characterEncoding=UTF-8" />
<property name="user" value="root" />
<property name="password" value="111111" />
<property name="alias" value="demo-ds" />
<property name="maximumConnectionCount" value="10" />
<property name="minimumConnectionCount" value="2" />
</bean>

<tx:annotation-driven transaction-manager="txManager" /> <bean id="txManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager">
<property name="sessionFactory" ref="hibernateSessionFactory" />
</bean>
<bean id="hibernateSessionFactory"
class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="hibernateProperties">
<props>
<prop key="hibernate.connection.autocommit">false</prop>
<prop key="hibernate.dialect">org.hibernate.dialect.Oracle9Dialect</prop>
<!-- 是否将运行期生成的SQL输出到日志以供调试  -->
<prop key="hibernate.show_sql">true</prop>
</props>
</property>
<property name="mappingResources">
<list>
<value>com/test/orm/Book.hbm.xml</value>
</list>
</property>
</bean>
<bean id="sBookDao" class="com.vcm.dao.SBookDao" autowire="byType"></bean>
</beans>

Answer 13

我晕 楼上的大哥你有没有看懂我的意思？我是想不写DAO的配置了 你还写？

Answer 14

我晕菜，你把<bean id="sBookDao" class="com.vcm.dao.SBookDao" autowire="byType"></bean>去掉不久可以了吗？
但是你得想想用下面注解怎么才能把sessionFactory注入dao中@Repository("storeDAO")
public class StoreDAOImpl extends HibernateDaoSupport implements StoreDAO

Answer 15

本人想使用annotation减少spring bean的配置,哎你来这里气我的？

Answer 16

我知道，service层和action都可以用annotation，但是dao层就是不知道sessionFactory怎么注入啊

Answer 17

DAO也可以注入 我就是配置不出来，很郁闷

Answer 18

说错了DAO也可以 使用annotation

Answer 19

http://forum.springsource.org/showthread.php?t=65413
看看这个

Answer 20

@Service("storeService") @Transactional public class StoreServiceImpl extends BaseService implements StoreService{ @Autowired private StoreDAO storeDAO ; @Autowired换成＠Resource("storeDAO")也许可以 我几乎不使用前者

Answer 21

原因应该是当DAO的实现继承了HibernateDaoSupport类时，是无法使用@Component等注解将此DAO的实现自动生成的，由于HibernateDaoSupport是一个抽象类，而且此类的方法都是final的，所以无法使用注解自动将sessionFactory注入进去,所以Caused by: java.lang.IllegalArgumentException: 'sessionFactory' or 'hibernateTemplate' is required