当我已经定义了bean时,为什么我会得到NoSuchBeanDefinitionException?

时间:2015-08-27 16:52:26

标签: java spring hibernate jpa

我只想说我是Spring,JPA和hibernate的新手。所以我尽我所能。另外,我使用的是基于Java的配置,所以这里没有使用xml。

所以,我正在尝试在PersonDAOJpa类上运行集成测试。当我运行集成测试时,我收到bean“jpaDao”的NoSuchBeanDefinitionException错误。我已经在DatabaseConfig类中定义了bean。那么,即使我已经定义了它,为什么我会收到此错误?

以下是与此问题相关的代码和错误跟踪:

错误追踪:

org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named 'jpaDao' is defined
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeanDefinition(DefaultListableBeanFactory.java:687)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getMergedLocalBeanDefinition(AbstractBeanFactory.java:1168)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:281)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199)
    at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:962)
    at com.orgchart.PersonServiceJPAIntegrationTest.<init>(PersonServiceJPAIntegrationTest.java:34)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
    at java.lang.reflect.Constructor.newInstance(Unknown Source)
    at org.junit.runners.BlockJUnit4ClassRunner.createTest(BlockJUnit4ClassRunner.java:217)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.createTest(SpringJUnit4ClassRunner.java:199)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner$1.runReflectiveCall(SpringJUnit4ClassRunner.java:259)
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.methodBlock(SpringJUnit4ClassRunner.java:261)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:219)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:83)
    at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
    at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
    at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:68)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:163)
    at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
    at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)

DatabaseConfig:

@Configuration
@PropertySource("classpath:application.properties")
@EnableTransactionManagement
public class DatabaseConfig{



    @Bean(name="jpaDao")
    public PersonDAOJpa jpadao(){

        return new PersonDAOJpa();

    }

    @Bean(name="jdbcDao")
    public PersonDAOJdbc dao(){

        return new PersonDAOJdbc();

    }


    @Bean
    public JdbcTemplate jdbc(DataSource ds){

        JdbcTemplate jdbc= new JdbcTemplate(dataSource());

        return jdbc;
    }


   @Bean
   public PersonService ps(){

       PersonService ps= new PersonServiceImpl();

       return ps;
   }


   @Bean(name="ds")
    public DataSource dataSource() {

        DriverManagerDataSource ds = new DriverManagerDataSource();
        ds.setDriverClassName("com.mysql.jdbc.Driver");
        ds.setUrl("jdbc:mysql://localhost:3306/------");
        ds.setUsername(" ");
        ds.setPassword(" ");

        return ds;

    }


   @Bean
   public LocalContainerEntityManagerFactoryBean entityManagerFactoryBean() {

       LocalContainerEntityManagerFactoryBean em =
           new LocalContainerEntityManagerFactoryBean();
       em.setDataSource(dataSource());
       em.setPackagesToScan(new String[] {"com.orgchart"});
       JpaVendorAdapter vendorAdapter = new HibernateJpaVendorAdapter();
       em.setJpaVendorAdapter(vendorAdapter);
       em.setJpaProperties(additionalProperties());
       return em;
   }


   @Bean
   public PlatformTransactionManager transactionManager() {

       JpaTransactionManager transactionManager = new JpaTransactionManager();
       transactionManager.setEntityManagerFactory(entityManagerFactoryBean()
           .getObject());
       return transactionManager;
   }


   @Bean
   public PersistenceExceptionTranslationPostProcessor exceptionTranslation() {

       return new PersistenceExceptionTranslationPostProcessor();
   }


   Properties additionalProperties() {

       return new Properties() {

           private static final long serialVersionUID = 1L;

           { // Hibernate Specific:
               setProperty("hibernate.hbm2ddl.auto", "update");
               setProperty("hibernate.dialect",
                   "org.hibernate.dialect.MySQL5Dialect");
           }
       };

   }



}

IntegrationTest:

@ContextConfiguration(classes = {IntegrationTestConfig.class})
@RunWith(SpringJUnit4ClassRunner.class)
public class PersonServiceJPAIntegrationTest {



    ApplicationContext context= new AnnotationConfigApplicationContext(DatabaseConfig.class);

    PersonDAO personDao = context.getBean("jpaDao", PersonDAO.class);

    PersonServiceImpl ps = new PersonServiceImpl(personDao);


    @Before
    public void setUp() throws Exception {


    }



    @After
    public void tearDown() throws Exception {

    }

......


}

PersonDAOJpa:

@Component("jpaDao")
public class PersonDAOJpa implements PersonDAO{



        @PersistenceContext
        private EntityManager em;



        public PersonDAOJpa(){

        }


        public EntityManager getEm() {

            return em;
        }


        public void setEm(EntityManager em) {

            this.em = em;
        }

    .....

}

**更新:

IntegrationTestConfig:

import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;



@Configuration
@ComponentScan
public class IntegrationTestConfig {


}

此外,我的应用程序中有一个服务层,我只是没有在下面添加它,因为我不想添加不相关的信息。但如果您确实需要它或者您需要更多代码或信息,我会添加它。

2 个答案:

答案 0 :(得分:0)

问题在于您的.bat注释。由于您尚未定义basepackages(要扫描的包),因此它将测试的当前包用作目标包。

将其更改为:

@ComponentScan

让它发挥作用。

答案 1 :(得分:0)

更改Bean定义以返回 PersonDAO

界面
@Bean(name="jpaDao")
public PersonDAO jpadao(){

    return new PersonDAOJpa();

}

这一行

PersonDAO personDao = context.getBean("jpaDao", PersonDAO.class);

将找到正确的bean类型。