我正在开发spring hibernate项目。我得到一个错误“NoSuchBeanDefinitionException”,如果我没有提到bean名称和@Repository或@Component。 例如:@Repository(“HibernateDaoImpl”)工作正常。 @Repository发出错误。
INFO: Building new Hibernate SessionFactory
Exception in thread "main" org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named 'HibernateDaoImpl' is defined
at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeanDefinition(DefaultListableBeanFactory.java:641)
at org.springframework.beans.factory.support.AbstractBeanFactory.getMergedLocalBeanDefinition(AbstractBeanFactory.java:1159)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:282)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:195)
at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:973)
at com.amal.springdb.JdbcDemo.main(JdbcDemo.java:23)
package com.amal.springdb.model;
import javax.persistence.Entity;
import javax.persistence.Id;
@Entity
public class Circle {
@Id
private int id;
private String name;
public Circle(int id, String name) {
this.id = id;
this.name = name;
}
public Circle() {
// TODO Auto-generated constructor stub
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}
package com.amal.springdb.dao;
import org.hibernate.Query;
import org.hibernate.SessionFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Repository;
@Repository //("HibernateDaoImpl")
public class HibernateDaoImpl {
@Autowired
private SessionFactory sessionFactory;
public int getCircleCount(){
String hql = "select count(*) from Circle";
Query query = getSessionFactory().openSession().createQuery(hql);
int i = ((Long)query.uniqueResult()).intValue();
return i;
}
public SessionFactory getSessionFactory() {
return sessionFactory;
}
public void setSessionFactory(SessionFactory sessionFactory) {
this.sessionFactory = sessionFactory;
}
}
package com.amal.springdb;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import com.amal.springdb.dao.HibernateDaoImpl;
import com.amal.springdb.dao.JdbcDaoImpl;
import com.amal.springdb.dao.SimpleJdbcDaoImpl;
import com.amal.springdb.model.Circle;
public class JdbcDemo {
public static void main(String[] args) {
ApplicationContext context = new ClassPathXmlApplicationContext("spring.xml");
HibernateDaoImpl hibernateDaoImpl = (HibernateDaoImpl) context.getBean("HibernateDaoImpl");
System.out.println(hibernateDaoImpl.getCircleCount());
}
}
<?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:p="http://www.springframework.org/schema/p"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd">
<context:annotation-config></context:annotation-config>
<context:component-scan base-package="com.amal.springdb"></context:component-scan>
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource">
<property name="driverClassName" value="org.apache.derby.jdbc.ClientDriver"></property>
<property name="url" value="jdbc:derby://localhost:1527/db;create=true"></property>
<property name="initialSize" value="2"></property>
<property name="maxActive" value="5"></property>
</bean>
<bean id="SimpleJdbcDaoImpl" class="com.amal.springdb.dao.SimpleJdbcDaoImpl">
<property name="dataSource" ref="dataSource"></property>
</bean>
<bean id="sessionFactory" class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">
<property name="dataSource" ref="dataSource"></property>
<property name="packagesToScan" value="com.amal.springdb.model"></property>
<property name="hibernateProperties">
<props>
<prop key="dialect">org.hibernate.dialect.DerbyDialect</prop>
</props>
</property>
</bean>
</beans>
答案 0 :(得分:2)
Spring默认bean名称基于on uncapitalized short class names。因此,请使用context.getBean("hibernateDaoImpl")
或根据@Repository("HibernateDAOImpl")
explicitly指定所需的bean名称。