Spring 2.5 驱动注解---无法找到实例

[songfuqiang]

它报的错误代码是：

Exception in thread "main" org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named 'userDAOImpl' is defined
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeanDefinition(DefaultListableBeanFactory.java:387)
	at org.springframework.beans.factory.support.AbstractBeanFactory.getMergedLocalBeanDefinition(AbstractBeanFactory.java:971)
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:246)
	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.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:880)
	at com.hibernate.demo.Test.main(Test.java:16)

它的配置是：applicationContext.

xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    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/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"
    default-autowire="autodetect">
<bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
	<property name="driverClassName" value="net.sourceforge.jtds.jdbc.Driver"></property>
	<property name="url" value="jdbc:jtds:sqlserver://localhost:1433/hibernate"></property>
	<property name="username" value="sa"></property>
	<property name="password" value="song"></property>
</bean>
    <bean id="sessionFactory" class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">
        <property name="dataSource" ref="dataSource" />
        <property name="annotatedClasses">
        	<list>
        		<value>com.hibernate.model.User</value>
        	</list>
        </property>
        <property name="annotatedPackages">
            <list>
                <value>com.hibernate.model.User</value>
            </list>
        </property>
        <property name="hibernateProperties">
            <props>
                <prop key="hibernate.dialect">org.hibernate.dialect.SQLServerDialect</prop>
                <prop key="hibernate.show_sql">true</prop>
                <prop key="hibernate.jdbc.fetch_size">10</prop>
                <prop key="hibernate.cache.provider_class">org.hibernate.cache.HashtableCacheProvider</prop>
            </props>
        </property>
    </bean>
    <context:component-scan base-package ="com.hibernate.model.UserDAOImpl"/>    
</beans>

我的源代码是：UserDAOImpl.java

package com.hibernate.dao;
import org.springframework.stereotype.Component;
import com.hibernate.model.User;
@Component("userDAOImpl")
public class UserDAOImpl extends SuperDAO implements UserDAO{
	public void save(User user) {
		this.save(user);
	}
}

SuperDAO.java

@Component
public class SuperDAO extends HibernateDaoSupport {
	@Resource(name="sessionFactory")
	public void setSuperSessionFactory(SessionFactory sessionFactory){
		this.setSuperSessionFactory(sessionFactory);
	}
}

调用:Test.java

public class Test {
	public static void main(String[] args) {
		ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");
		UserDAOImpl userDAOImpl=(UserDAOImpl)context.getBean("userDAOImpl");
		User user=new User();
		user.setId(1);
		user.setName("和三");
		user.setAge(11);
		user.setSex("男");
		userDAOImpl.save(user);
	}
}

请大家帮忙指出错误！

[songfuqiang]

在文件UserDAOImpl.java 中加了@Component("userDAOImpl")和配置applicationContext.xml中加了 <context:component-scan base-package ="com.hibernate.model.UserDAOImpl"/>为什么都还不行呢？

[Purking]

<context:component-scan base-package ="com.hibernate.model.UserDAOImpl"/>
其属已经说了是 base-PACKAGE , 怎么你还写成类的全限定类名呢??

开启了 Classpath 扫描后, Spring 会扫描配置的包下面所有的子包,
所以你的配置改成 base-package="com.hibernate.model" /> 即可

[howsun_zh]

楼上正解。
另外好像还少了一项：
<context:annotation-config />
不然@Resource没法用。

[Purking]

[Quote=引用 3 楼 zhangjihao 的回复:]
楼上正解。
另外好像还少了一项：
<context:annotation-config />
不然@Resource没法用。
[/Quote]

Tag name: component-scan Description : Scans the classpath for annotated components that will be auto-registered as Spring beans. By default, the Spring-provided @Component, @Repository, @Service, and @Controller stereotypes will be detected. Note: This tag implies the effects of the 'annotation-config' tag, activating @Required, @Autowired, @PostConstruct, @PreDestroy, @Resource, @PersistenceContext and @PersistenceUnit

其实开启了 Classpath 扫描前者就可以不用了, 这个也是我一次配置错误的时候发现同样可以使用的时候
偶然发现的 :)

[songfuqiang]

我这样改了，还是不行！抱原来的错！

[howsun_zh]

1、SuperDAO 上不需要@Component

2、
@Component("userDAOImpl")
public class UserDAOImpl extends SuperDAO implements UserDAO{

}
@Component换成@Repository试试，另外用接口名作bean名，即：
@Repository("userDAO")

使用时： UserDAO userDAO = (UserDAO)context.getBean("userDAO");
最好是这种习惯，因为已经定制了接口。


另外谢谢4楼的提醒，我抽空做下实验。

[songfuqiang]

自己给自己顶起，别沉了

[songfuqiang]

@Repository是哪个包里的，我怎么用不起它种注解呢？

[songfuqiang]

@Repository可以用了，但是按6楼的方法修改过，还是报原来的错误！

[sfq12345678]

顶起！！！！别沉了！

[张祥龙]

<bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
		<property name="dataSource" ref="dataSource"/>
		 <property name="mappingResources">
			    <list>
			      <value>cn/itcast/bean/Employee.hbm.xml</value>
			    </list>
		</property>
		 <property name="hibernateProperties">
			 <value>
			      hibernate.dialect=org.hibernate.dialect.MySQL5Dialect
			      hibernate.hbm2ddl.auto=update
			      hibernate.show_sql=false
			      hibernate.format_sql=false
			  </value>
		 </property>
	</bean>

俺平常都是这么配的，你这种配法没研究过

[songfuqiang]

我已经放到我网站上了，如果有兴趣，请到 http://www.house08.cn/FileDown/src.rar 下载！

[张祥龙]

怎么不代jar包啊，郁闷

[howsun_zh]

<context:component-scan base-package ="com.hibernate.model"/>
改为
<context:component-scan base-package ="com.hibernate"/>

[songfuqiang]

谢谢 zhangjihao 我现在报以下错了！我的文件重新上传过，请您帮我看看 下载文件
jar包下载

Exception in thread "main" org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userDAOImpl' defined in file [D:\workspace\SSH\WebRoot\WEB-INF\classes\com\hibernate\dao\UserDAOImpl.class]: Error setting property values; nested exception is org.springframework.beans.PropertyBatchUpdateException; nested PropertyAccessExceptions (1) are:
PropertyAccessException 1: org.springframework.beans.MethodInvocationException: Property 'superSessionFactory' threw exception; nested exception is java.lang.StackOverflowError
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1279)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1010)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:472)
	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.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:139)
	at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:83)
	at com.hibernate.demo.Test.main(Test.java:11)
Caused by: org.springframework.beans.PropertyBatchUpdateException; nested PropertyAccessExceptions (1) are:
PropertyAccessException 1: org.springframework.beans.MethodInvocationException: Property 'superSessionFactory' threw exception; nested exception is java.lang.StackOverflowError
	at org.springframework.beans.AbstractPropertyAccessor.setPropertyValues(AbstractPropertyAccessor.java:104)
	at org.springframework.beans.AbstractPropertyAccessor.setPropertyValues(AbstractPropertyAccessor.java:59)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1276)
	... 16 more

[howsun_zh]

StackOverflowError ？
是不是有死循环了？

既然：
<bean id="sessionFactory" class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">
那么就可以在SuperDAO中这样取：
@Resource protected SessionFactory sessionFactory;
(setter && getter可要可不要)

注意变量修饰权限为protected，这样可以在子类中：
Session session = sessionFactory.getCurrentSession();

那么就可以：
session.save(user);

而不能用getHibernateTemplate().save(user)了，因为HibernateTemplate根本没有在容器中装配。

最后注意事务控制。
可以SuperDAO上配上注解：@Transactional。但提前是xml中要声明事务。

[junzi354]

还不结？？

[songfuqiang]

朋友们，我已经发到 http://topic.csdn.net/u/20100104/00/b619566d-f03f-4ef6-85b2-0bead2e33184.html 了，请大家帮帮忙