JPA休眠@Transactional配置

Question

没有@Transactional，如果我的应用程序的工作，但是当它调用删除我得到以下异常：

请求处理失败;嵌套的例外是 javax.persistence.TransactionRequiredException：无交易 的EntityManager

所以我想使它事务性的，但如果我添加@Transactional到类或方法，当我运行应用程序，我得到：

未发现相关性类型[net.tirasa.jpaaddressbook.JpaEntryDAO] 的排位豆：预期至少1豆，其有资格作为 自动装配候选这种依赖性。

我JpaEntryDAO是：

@Repository 
public class JpaEntryDAO implements EntryDAO { 

@PersistenceContext 
@Autowired 
private EntityManager entityManager; 


@Override 
@Transactional // <<<<<<------- add or remove it 
public void remove(int id) { 
    Entry entry = new Entry(); 
    entityManager.remove(id); 
} 
//[...] 

控制器类：

@Controller 

公共类AddressBookController {

@Autowired 
private JpaEntryDAO dao; 

@RequestMapping(value = { "/", "/index" }) 
public void home() { 
} 
[...] 

而且applicationContext.xml文件是：

<?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:p="http://www.springframework.org/schema/p" 
     xsi:schemaLocation="http://www.springframework.org/schema/beans 
    http://www.springframework.org/schema/beans/spring-beans-3.0.xsd 
    http://www.springframework.org/schema/context 
    http://www.springframework.org/schema/context/spring-context-3.0.xsd 
    http://www.springframework.org/schema/tx 
    http://www.springframework.org/schema/tx/spring-tx.xsd"> 

    <!-- enable the configuration of transactional behavior based on annotations --> 
    <tx:annotation-driven transaction-manager="transactionManager" />  
    <context:component-scan base-package="net.tirasa.jpaaddressbook/"/> 
    <context:annotation-config /> 

    <bean class="org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor" /> 

    <!--<bean id="dao" class="net.tirasa.jpaaddressbook.JpaEntryDAO"/>--> 

    <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource"> 
    <property name="driverClassName" value="com.mysql.jdbc.Driver" /> 
    <property name="url" value="jdbc:mysql://localhost/Rubrica" /> 
    <property name="username" value="matt3o" /> 
    <property name="password" value="secret" /> 
    </bean> 

    <bean id="viewResolver" class="org.springframework.web.servlet.view.UrlBasedViewResolver"> 
    <property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/> 
    <property name="prefix" value="/Views/"/> 
    <property name="suffix" value=".jsp"/> 
    </bean> 

    <bean id="entityManagerFactory" 
     class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean"> 
    <property name="persistenceUnitName" value="EntryPU" /> 
    <property name="dataSource" ref="dataSource" /> 
    <property name="jpaVendorAdapter" ref="jpaVendorAdapter" /> 
    <property name="packagesToScan" value="net.tirasa.jpdaaddressbook" /> 
    </bean> 

    <bean id="jpaVendorAdapter" class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter"> 
    <property name="showSql" value="false" /> 
    <property name="generateDdl" value="false" /> 
    <property name="database" value="MYSQL" /> 
    <property name="databasePlatform" value="org.hibernate.dialect.MySQL5Dialect"/> 
    </bean> 

    <bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager"> 
    <!--org.springframework.jdbc.datasource.DataSourceTransactionManager--> 
    <property name="entityManagerFactory" ref="entityManagerFactory" /> 
    </bean> 




    <bean class="org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor"/> 

</beans> 

任何想法找到错误？这是一个更完整的栈跟踪：

Error creating bean with name 'addressBookController': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private net.tirasa.jpaaddressbook.JpaEntryDAO net.tirasa.jpaaddressbook.AddressBookController.dao; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [net.tirasa.jpaaddressbook.JpaEntryDAO] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)} 
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:334) 

Answer 1

在xml中取消注释JpaEntryDAO类型的bean。