Question

我正在尝试将某些内容写入我的数据库，但尽管它报告了“已成功完成的请求”，但它无法正常工作。成功之后，一切似乎都运行良好，我的控制器正确地重定向我。

调试

DEBUG a.d.p.payment.PaymentServiceImpl - Requesting to persist new user'max_test@test.com'.
DEBUG a.d.p.payment.model.PaymentDAOImpl - Persisting com.app.payment.model.PaymentUser@86ceb985.
DEBUG o.s.o.j.SharedEntityManagerCreator$SharedEntityManagerInvocationHandler - Creating new EntityManager for shared EntityManager invocation
DEBUG org.hibernate.impl.SessionImpl - opened session at timestamp: 13771737739
DEBUG o.h.e.def.AbstractSaveEventListener - delaying identity-insert due to no transaction in progress
DEBUG o.s.o.jpa.EntityManagerFactoryUtils - Closing JPA EntityManager
DEBUG o.s.b.f.s.DefaultListableBeanFactory - Invoking afterPropertiesSet() on bean with name 'redirectForm'
DEBUG o.s.web.servlet.DispatcherServlet - Rendering view [org.springframework.web.servlet.view.JstlView: name 'redirectForm'; URL [/WEB-INF/jsp/redirectForm.jsp]] in DispatcherServlet with name 'payment'
DEBUG o.s.web.servlet.view.JstlView - Forwarding to resource [/WEB-INF/jsp/redirectForm.jsp] in InternalResourceView 'redirectForm'
DEBUG o.s.web.servlet.DispatcherServlet - Successfully completed request

appContext.xml（根上下文）

<context:annotation-config />

<bean id="dataSource"
    class="org.springframework.jdbc.datasource.DriverManagerDataSource">
    <property name="username" value="test" />
    <property name="password" value="test" />
    <property name="driverClassName" value="com.mysql.jdbc.Driver" />
    <!--payment_test is the name of the schema -->
    <property name="url" value="jdbc:mysql://test1.com:3306/payment_test" /> 
</bean>

<bean id="entityManagerFactory"
    class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
    <property name="persistenceUnitName" value="payment" />

    <property name="persistenceUnitManager">
        <bean class="org.springframework.orm.jpa.persistenceunit.DefaultPersistenceUnitManager" >       
            <property name="defaultDataSource" ref="dataSource" />  
        </bean>
     </property>

    <property name="jpaVendorAdapter">
        <bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
            <property name="showSql" value="true" />
            <property name="generateDdl" value="true" />
            <property name="databasePlatform" value="org.hibernate.dialect.MySQLDialect" />

        </bean>
    </property>
</bean>

<context:component-scan base-package="com.app.payment" />
<context:annotation-config />

<!-- Auto scan the components -->
<bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager" />

<tx:annotation-driven />

PaymentUser

@Entity
@Table(name="PaymentUser")
public class PaymentUser {

    @Id
    @GeneratedValue
    private int id;
    ...    
}

PaymentService

@Transactional("transactionManager")
@Service()
public class PaymentServiceImpl implements PaymentService {

    @Autowired
    private PaymentDAO paymentDAO;
        // ... service methods
}

付款DAO

@Repository()
public class PaymentDAOImpl implements PaymentDAO {

    //@PersistenceContext(unitName="payment")
    @PersistenceContext()
    EntityManager em;
}

似乎它甚至没有开始交易。希望有足够的信息让某人帮助我。谢谢你的帮助。

更新

获取数据工作正常。持久化（EntityManager em.persist()）和删除（em.remove）不起作用。可能有正确的问题。意思是只读权限而没有写权限，但在这种情况下我应该有一个错误。

更新2

将<aop:scoped-proxy />添加到我的dataSource bean，但没有更改。就像我的调试消息说的那样

DEBUG o.h.e.def.AbstractSaveEventListener - delaying identity-insert due to no transaction in progress

没有交易，但我的交易应该从哪里开始？

我还检查了问题Spring: Annotation-driven Transaction Manager 但我不知道该怎么做。

新的appContext

<?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:jee="http://www.springframework.org/schema/jee"
    xmlns:tx="http://www.springframework.org/schema/tx"
    xmlns:aop="http://www.springframework.org/schema/aop"
    xsi:schemaLocation="http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-3.1.xsd
        http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.1.xsd
        http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.1.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.1.xsd">

    <context:annotation-config />
    <tx:annotation-driven />

    <!-- Auto scan the components 
            <bean id="paymentDao" class="com.app.payment.model.PaymentDAOImpl" />
            <bean id="paymentService" class="com.app.payment.PaymentServiceImpl" />
    should do the same      
    -->
    <context:component-scan base-package="com.appn.payment" /> 

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


    <bean id="dataSource"
        class="org.apache.commons.dbcp.BasicDataSource" lazy-init="false" destroy-method="close"> 
        <aop:scoped-proxy />
        <property name="username" value="user" />
        <property name="password" value="pw" />
        <property name="driverClassName" value="com.mysql.jdbc.Driver" />
        <property name="url" value="jdbc:mysql://test1.com:3306/test" />
        <!--  <property name="testOnBorrow" value="true" />
        <property name="validationQuery" value="SELECT 1" />-->
    </bean>

    <bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager"> 
         <property name="entityManagerFactory" 
                    ref="entityManagerFactory" />
    </bean>

    <bean id="entityManagerFactory"
        class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
        <property name="persistenceUnitName" value="payment" />
        <property name="dataSource" ref="dataSource" />
        <property name="persistenceUnitManager">
            <bean class="org.springframework.orm.jpa.persistenceunit.DefaultPersistenceUnitManager" >       
                <property name="defaultDataSource" ref="dataSource" />  
            </bean>
         </property>

        <property name="jpaVendorAdapter">
            <bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
                <property name="showSql" value="true" />
                <property name="generateDdl" value="true" />
                <!-- <property name="databasePlatform" value="org.hibernate.dialect.MySQL5InnoDBDialect" />  -->
                <property name="databasePlatform" value="org.hibernate.dialect.MySQLDialect" />

            </bean>
        </property>

        <property name="packagesToScan" value="com.app.payment" /> 
    </bean>

    <tx:annotation-driven />    

</beans>

更新3

尝试刷新我的PaymentDAO em.flush()，这会导致我收到错误消息。

javax.persistence.TransactionRequiredException: no transaction is in progress   at org.hibernate.ejb.AbstractEntityManagerImpl.flush(AbstractEntityManagerImpl.java:792)

是：

public void flush() {
        if ( !isTransactionInProgress() ) {
            throw new TransactionRequiredException( "no transaction is in progress" );
        }
        try {
            getSession().flush();
        }
        catch ( RuntimeException e ) {
            throw convert( e );
        }
    }

我需要某种特殊会话吗？还记录在我的控制器中

log.info("Is transaction active " + TransactionSynchronizationManager.isActualTransactionActive());

导致错误......不确定为什么没有活动交易...

更新4

import java.util.List;

import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Repository;
import org.springframework.transaction.annotation.Transactional;
@Transactional
@Repository
public class PaymentDAOImpl implements PaymentDAO {

    private final Logger log = LoggerFactory.getLogger(getClass());


    //@PersistenceContext()
    @PersistenceContext(unitName="payment")
    EntityManager em;

    @Override
    public void persist(PaymentUser user) {
        log.debug("Persisting {}.", user);
        em.persist(user);
        //em.flush();

    }

    @Override
    public void remove(PaymentUser user) {
        log.debug("Removing {}.", user);
        em.remove(user);
    }

    @Override
    public List<PaymentUser> getPaymentUsers() {
        log.debug("Fetching payment users.");
        return em.createQuery("FROM PaymentUser", PaymentUser.class).getResultList();
    }

    @Override
    public PaymentUser getPaymentUserById(String userId) {
        log.debug("Fetching payment users with id '{}'.",userId);
        return em.createQuery(
                "FROM PaymentUser WHERE userId = :userId", PaymentUser.class)
                .setParameter("userId", userId).getSingleResult();
    }

    @Override
    public void removePaymentUserById(String userId) {
        log.debug("Removing payment users with id '{}'.",userId);
        em.createQuery("DELETE FROM PaymentUser WHERE userId = :userId ", PaymentUser.class).
        setParameter("userId", userId).executeUpdate();

    }

    @Override
    public void mergePaymentUser(PaymentUser user) {
        log.debug("Merging payment user '{}'.",user);
        em.merge(user);
    }
}

更新5

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">

     <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>

        <!-- springapp servlet -->
    <servlet>
        <servlet-name>payment</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <load-on-startup>1</load-on-startup>
    </servlet>

    <servlet-mapping>
        <servlet-name>payment</servlet-name>
          <url-pattern>/payment/*</url-pattern> 
          <url-pattern>/paymentExternalData</url-pattern>
        <url-pattern>/paymentInternalData</url-pattern> 
    </servlet-mapping>

    <!-- Welcome files -->
    <welcome-file-list>
         <welcome-file>payment.jsp</welcome-file>
         <welcome-file>payment.html</welcome-file>
    </welcome-file-list>

    <!-- S P R I N G -->

    <!-- Add Support for Spring -->
    <!-- Default applicationContext location: /WEB-INF/applicationContext.xml -->


    <!-- UTF-8 filter -->
    <filter>
        <filter-name>characterEncodingFilter</filter-name>
        <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
        <init-param>
            <param-name>encoding</param-name>
            <param-value>UTF-8</param-value>
        </init-param>
        <init-param>
            <param-name>forceEncoding</param-name>
            <param-value>true</param-value>
        </init-param>
    </filter>
    <filter-mapping>
        <filter-name>characterEncodingFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>
</web-app>

更新6

付款servlet.xml中

<?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/aop http://www.springframework.org/schema/aop/spring-aop-3.1.xsd
        http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.1.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.1.xsd">

    <context:annotation-config />
    <tx:annotation-driven />

    <!-- Auto scan the components -->
    <context:component-scan base-package="com.app.payment" /> 

    <bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/jsp/"/>
        <property name="suffix" value=".jsp"/>
    </bean>

</beans>

appContext.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:tx="http://www.springframework.org/schema/tx"
    xmlns:aop="http://www.springframework.org/schema/aop"
    xsi:schemaLocation="http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.1.xsd
        http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.1.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.1.xsd">

    <context:annotation-config />
    <tx:annotation-driven />

    <bean id="dataSource"
        class="org.apache.commons.dbcp.BasicDataSource" lazy-init="false" destroy-method="close"> 
        <aop:scoped-proxy />
        <property name="username" value="test" />
        <property name="password" value="test" />
        <property name="driverClassName" value="com.mysql.jdbc.Driver" />
        <property name="url" value="jdbc:mysql://test1.com/test" />
        <property name="testOnBorrow" value="true" />
        <property name="validationQuery" value="SELECT 1" />
    </bean>

    <bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager"> 
         <property name="entityManagerFactory" 
                    ref="entityManagerFactory" />
    </bean>

    <bean id="entityManagerFactory"
        class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
        <property name="persistenceUnitName" value="payment" />
        <property name="dataSource" ref="dataSource" />
        <property name="persistenceUnitManager">
            <bean class="org.springframework.orm.jpa.persistenceunit.DefaultPersistenceUnitManager" >       
                <property name="defaultDataSource" ref="dataSource" />  
            </bean>
         </property>

        <property name="jpaVendorAdapter">
            <bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
                <property name="showSql" value="true" />
                <property name="generateDdl" value="true" />
                <property name="databasePlatform" value="org.hibernate.dialect.MySQLDialect" />

            </bean>
        </property>
    </bean>

</beans>

Answer 1

确保两个xml配置中没有完全重复的<context:component-scan .../>元素。如果你有这个，你基本上复制了所有的bean实例。您最初拥有的是ContextLoaderListener加载的所有bean，并且由于<tx:annotation-driven />的存在而被代理。

现在，如果您的payment-servlet.xml中有相同的<context:component-scan .../>，那么将再次扫描所有创建另一个实例的bean，但是由于没有<tx:annotation-driven />它将会不被代理，也没有应用任何交易。

现在发生的是，只要您需要一个@Service带注释的bean，DispatcherServlet首先会查找自己的ApplicationContext，看看是否有bean来满足其需求。如果它将被使用（您当前的情况），如果没有它将查询父上下文（由ContextLoaderListener加载的那个）。

您需要做的是配置ContextLoaderListener以扫描所有但是 @Controller带注释的bean以及DispatcherServlet来扫描 ONLY for @Controller带注释的bean。这可以通过正确配置<context:component-scan .../>来完成。

的applicationContext.xml

<context:component-scan base-package="com.appn.payment">
  <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller" />
</context:component-scan>

付款servlet.xml中

<context:component-scan base-package="com.appn.payment" use-default-filters="false">
  <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller" />
</context:component-scan>

这将为您提供事务，并且只为您的bean提供单个实例。您应该从payment-servlet.xml文件中删除<tx:annotation-driven />。

参考指南中还有一个开放的JIRA issue。也是Spring Community Forums中解释此问题的一个主题。

Answer 2

再次查看您的applicationContext.xml，我注意到您没有使用您的transactionManager声明分配entityManager。我不确定Spring是否会隐式设置它，但如果它不能解释为什么你的坚持不起作用。

例如，更改：

<bean id="transactionManager" 
   class="org.springframework.orm.jpa.JpaTransactionManager" />

to

<bean id="transactionManager" 
   class="org.springframework.orm.jpa.JpaTransactionManager">
  <property name="entityManagerFactory" 
      ref="entityManagerFactory" />
</bean>

<强>更新

我只使用容器管理的实体配置了Spring + JPA（看起来也是你的意图） - 从来没有真正的应用程序管理。据我所知，在使用Spring进行Container管理时，您并不需要配置持久单元。我不是100％确定这是否有帮助，但尝试更改在applicationContext.xml中声明entityManagerFactory的方式。

<bean id="entityManagerFactory"
   class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">

   <property name="dataSource" ref="dataSource" />

   <property name="packagesToScan" value="com.app.payment" />   

   <property name="persistenceProvider">
      <bean class="org.hibernate.ejb.HibernatePersistence" />
   </property>

   <property name="jpaProperties">
      <props>
         <prop key="hibernate.dialect">org.hibernate.dialect.MySQL5Dialect</prop>
         <prop key="hiberate.show_sql">true</prop>
         ... //additional props
      </props> 
   </property>
</bean>

Answer 3

使用注释驱动的事务时，应该在使用数据库的方法之前放置@Transactional注释。它可以是您的DAO或服务方法。我可以看到您已将@Transactional置于PaymentServiceImpl之上，但这不是该注释的正确位置。

Answer 4

您似乎在DAO实现类的开头错过了@Transactional注释。这可以解释为什么你没有打开任何交易。

如果还不足以解决您的问题，您能否给我们完整的DAO实施课程？

Answer 5

设法找到问题所在。 Spring Docu“@EnableTransactionManagement只在与bean定义的相同应用程序上下文中查找@Transactional。”在我的payment-servlet.xml中我没有<tx:annotation-driven />这就是为什么没有活动的交易。

Answer 6

创建transactionManager bean后，您应该在Xml文件中启用该事务，

＆LT; tx：annotation-driven transaction-manager =“transactionManager”/＆gt;

或

＆LT; tx：注释驱动/＆gt;

如果你写了第二个，那么你必须在DAO类中使用@Transaction（），

如果任何方法在写入之前需要事务

@Transactional（propagation = Propagation.REQUIRED，readOnly = false）

它告诉事务是require，readOnly = false意味着你可以读写数据。

Spring应用程序似乎不是持久化数据

6 个答案: