Spring-MVC，休眠：内容未从数据库中删除，但方法被触发

Question

我正在使用Spring-MVC应用程序，在该应用程序中，我使用@Scheduled方法从数据库中删除旧信息（已使用1周）。 该方法被解雇了，我收到了一封电子邮件，但是数据库的内容并未删除。

另外，我收到了4封电子邮件，我应该收到一封。 有任何想法吗？

有问题的DAO代码：

@Repository
@Transactional
public class NotificationDAOImpl implements NotificationDAO{


    private SessionFactory sessionFactory;

    public void setSessionFactory(SessionFactory sf){
        this.sessionFactory = sf;
    }

    private Session session;

    public void setSession(Session session){this.session = session;}
    @Override
    @Scheduled(cron = "0 3 3 * * ?")
    public void deleteNotificationsAutoMagically(){
        Emails emails = new Emails();
        emails.sendEmailForNotificationDelete();
        session=this.sessionFactory.getCurrentSession();
        long now = System.currentTimeMillis();
        long nowMinus1Week = now - (1000 * 60 * 60 * 24 * 7);
        Timestamp nowMinus1WeekAsTimeStamp = new Timestamp(nowMinus1Week);
        Query query = session.createQuery("delete from NoteLock as nl where nl.timestamp<:limit");
        query.setParameter("limit", nowMinus1WeekAsTimeStamp);
        query.executeUpdate();
        session.flush();
    } 
}

电邮代码：

     public void sendEmailForNotificationDelete(){
            final String from = "email@email.de";
            final String emailPassword = "password";

            Properties props = new Properties();

            props.put("mail.smtp.starttls.enable", "true");
            props.put("mail.smtp.auth", "true");
            props.put("mail.smtp.host", "mail.delink-ssl.net");
            props.put("mail.smtp.starttls.enable", "true");
            props.put("mail.smtp.port", "25");

            Session session = Session.getDefaultInstance(props,
                    new Authenticator() {
                        protected PasswordAuthentication getPasswordAuthentication() {
                            return new PasswordAuthentication(
                                    from, emailPassword);
                        }
                    });
            try {
                MimeMessage message = new MimeMessage(session);
                message.setFrom(new InternetAddress(from));
                message.addRecipient(Message.RecipientType.TO, new InternetAddress("myemail@gmail.com"));
                message.setSubject("Notifications were deleted");
                String messageToSend = "Notifications were deleted";
                message.setContent(messageToSend, "text/html;charset=UTF-8");
                Transport.send(message);
            }catch (Exception ignored){

            }
        }

你能帮忙的话，我会很高兴。 非常感谢。

编辑

servlet-context.xml：

<?xml version="1.0" encoding="UTF-8"?>
<beans:beans xmlns="http://www.springframework.org/schema/mvc"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xmlns:beans="http://www.springframework.org/schema/beans"
             xmlns:context="http://www.springframework.org/schema/context"
             xmlns:tx="http://www.springframework.org/schema/tx"
             xmlns:mvc="http://www.springframework.org/schema/mvc"
             xmlns:task="http://www.springframework.org/schema/task"
             xsi:schemaLocation="http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd
         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
         http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-4.0.xsd
http://www.springframework.org/schema/task
http://www.springframework.org/schema/task/spring-task.xsd">


    <context:annotation-config/>

    <mvc:annotation-driven>
        <mvc:argument-resolvers>
            <beans:bean class="org.springframework.mobile.device.DeviceWebArgumentResolver"/>
        </mvc:argument-resolvers>
    </mvc:annotation-driven>


    <mvc:interceptors>
        <beans:bean class="org.springframework.mobile.device.DeviceResolverHandlerInterceptor"/>
    </mvc:interceptors>

    <mvc:default-servlet-handler/>

    <resources mapping="/resources/" location="/resources/"/>

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

    <beans:bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"
                destroy-method="close">
        <beans:property name="driverClassName" value="org.postgresql.Driver"/>
        <beans:property name="url"
                        value="jdbc:postgresql://localhost:5432/dbname"/>
        <beans:property name="username" value="dbuser"/>
        <beans:property name="password" value="dbpass"/>
        <beans:property name="removeAbandoned" value="true"/>
        <beans:property name="removeAbandonedTimeout" value="20"/>
        <beans:property name="defaultAutoCommit" value="false"/>
    </beans:bean>


    <!-- Hibernate 4 SessionFactory Bean definition -->
    <beans:bean id="hibernate4AnnotatedSessionFactory"
                class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
        <beans:property name="dataSource" ref="dataSource"/>
        <beans:property name="annotatedClasses">
            <beans:list>
                <beans:value>com.journaldev.spring.model.Person</beans:value>
                <beans:value>com.journaldev.spring.model.Notes</beans:value>
                <beans:value>com.journaldev.spring.model.Canvas</beans:value>
                <beans:value>com.journaldev.spring.model.Section</beans:value>
                <beans:value>com.journaldev.spring.model.Attachment</beans:value>

                <beans:value>com.journaldev.spring.model.GroupAccount</beans:value>
                <beans:value>com.journaldev.spring.model.GroupMembers</beans:value>
                <beans:value>com.journaldev.spring.model.GroupCanvas</beans:value>
                <beans:value>com.journaldev.spring.model.GroupSection</beans:value>
                <beans:value>com.journaldev.spring.model.GroupNotes</beans:value>
                <beans:value>com.journaldev.spring.model.GroupAttachments
                </beans:value>

                <beans:value>com.journaldev.spring.model.Token</beans:value>
                <beans:value>com.journaldev.spring.model.WaitingMembers
                </beans:value>
                <beans:value>com.journaldev.spring.model.NoteHistory</beans:value>
                <beans:value>com.journaldev.spring.model.GroupNoteHistory
                </beans:value>

                <beans:value>com.journaldev.spring.model.Feedback</beans:value>
                <beans:value>com.journaldev.spring.model.UnreadNotes</beans:value>
                <beans:value>com.journaldev.spring.model.SessionState</beans:value>
                <beans:value>com.journaldev.spring.model.FeatureRequest
                </beans:value>
                <beans:value>com.journaldev.spring.model.FeatureComment
                </beans:value>
                <beans:value>com.journaldev.spring.model.FeatureLike</beans:value>
                <beans:value>com.journaldev.spring.model.OnlineUsers</beans:value>
                <beans:value>com.journaldev.spring.model.NoteCount</beans:value>
                <beans:value>com.journaldev.spring.model.NoteLock</beans:value>
                <beans:value>com.journaldev.spring.model.ChatMessages</beans:value>
                <beans:value>com.journaldev.spring.model.Conversation</beans:value>
                <beans:value>com.journaldev.spring.model.Replies</beans:value>
                <beans:value>com.journaldev.spring.model.Notification</beans:value>
                <beans:value>com.journaldev.spring.model.Statistics</beans:value>
                <beans:value>com.journaldev.spring.model.PrivateChannel</beans:value>
                <!--<beans:value>com.journaldev.spring.model.GroupChannels</beans:value>-->
            </beans:list>
        </beans:property>
        <beans:property name="hibernateProperties">
            <beans:props>
                <beans:prop key="hibernate.dialect">org.hibernate.dialect.PostgreSQL9Dialect
                </beans:prop>
                <beans:prop key="hibernate.show_sql">false</beans:prop>
                <beans:prop key="connection.pool_size">200</beans:prop>
                <beans:prop key="c3p0.max_size">200</beans:prop>
                <beans:prop key="c3p0.timeout">1000</beans:prop>
                   <beans:prop key="hibernate.jdbc.batch_size">1000</beans:prop>
                    <beans:prop key="hibernate.order_updates">true</beans:prop>
                <beans:prop key="hibernate.hbm2ddl.auto">update</beans:prop>
            </beans:props>
        </beans:property>
    </beans:bean>

    <task:annotation-driven/>

    <tx:annotation-driven transaction-manager="transactionManager"/>

    <beans:bean id="transactionManager"
                class="org.springframework.orm.hibernate4.HibernateTransactionManager">
        <beans:property name="sessionFactory" ref="hibernate4AnnotatedSessionFactory"/>
    </beans:bean>

    <!-- Person beans being here -->
    <beans:bean id="personDAO" class="com.journaldev.spring.dao.PersonDAOImpl">
        <beans:property name="sessionFactory"
                        ref="hibernate4AnnotatedSessionFactory"/>
    </beans:bean>
    <beans:bean id="personService"
                class="com.journaldev.spring.service.PersonServiceImpl">
        <beans:property name="personDAO" ref="personDAO"/>
    </beans:bean>


    <!--  <beans:bean id="bayeux" class="org.cometd.server.BayeuxServerImpl" init-method="start" destroy-method="stop">
          <beans:property name="transports">
              <beans:list>
                  <beans:bean id="jsonTransport" class="org.cometd.server.transport.JSONTransport">
                      <beans:constructor-arg ref="bayeux"/>
                  </beans:bean>
                  <beans:bean id="jsonpTransport" class="org.cometd.server.transport.JSONPTransport">
                      <beans:constructor-arg ref="bayeux"/>
                  </beans:bean>
              </beans:list>
        </beans:property>
      </beans:bean>-->

    <!-- Group Account beans begin here -->

    <beans:bean id="groupAccountDAO"
                class="com.journaldev.spring.dao.GroupAccountDAOImpl">
        <beans:property name="sessionFactory"
                        ref="hibernate4AnnotatedSessionFactory"/>
    </beans:bean>

    <beans:bean id="groupAccountService"
                class="com.journaldev.spring.service.GroupAccountServiceImpl">
        <beans:property name="groupAccountDAO" ref="groupAccountDAO"/>
    </beans:bean>

    <!--Group Members bean begin here -->
    <beans:bean id="groupMembersDAO"
                class="com.journaldev.spring.dao.GroupMembersDAOImpl">
        <beans:property name="sessionFactory"
                        ref="hibernate4AnnotatedSessionFactory"/>
    </beans:bean>

    <beans:bean id="groupMembersService"
                class="com.journaldev.spring.service.GroupMembersServiceImpl">
        <beans:property name="groupMembersDAO" ref="groupMembersDAO"/>
    </beans:bean>

    <!-- Notes bean begin here -->
    <beans:bean id="notesDAO" class="com.journaldev.spring.dao.NotesDAOImpl">
        <beans:property name="sessionFactory"
                        ref="hibernate4AnnotatedSessionFactory"/>
    </beans:bean>

    <beans:bean id="notesService"
                class="com.journaldev.spring.service.NotesServiceImpl">
        <beans:property name="notesDAO" ref="notesDAO"/>
    </beans:bean>

    <!--GroupNotes begin here -->

    <beans:bean id="groupNotesDAO" class="com.journaldev.spring.dao.GroupNotesDAOImpl">
        <beans:property name="sessionFactory"
                        ref="hibernate4AnnotatedSessionFactory"/>
    </beans:bean>

    <beans:bean id="groupNotesService"
                class="com.journaldev.spring.service.GroupNotesServiceImpl">
        <beans:property name="groupNotesDAO" ref="groupNotesDAO"/>
    </beans:bean>


    <!-- Canvas Beans begin here -->

    <beans:bean id="canvasDAO" class="com.journaldev.spring.dao.CanvasDAOImpl">
        <beans:property name="sessionFactory"
                        ref="hibernate4AnnotatedSessionFactory"/>
    </beans:bean>

    <beans:bean id="canvasService"
                class="com.journaldev.spring.service.CanvasServiceImpl">
        <beans:property name="canvasDAO" ref="canvasDAO"/>
    </beans:bean>

    <!--Group Canvas beans begin here -->
    <beans:bean id="groupCanvasDAO"
                class="com.journaldev.spring.dao.GroupCanvasDAOImpl">
        <beans:property name="sessionFactory"
                        ref="hibernate4AnnotatedSessionFactory"/>
    </beans:bean>

    <beans:bean id="groupCanvasService"
                class="com.journaldev.spring.service.GroupCanvasServiceImpl">
        <beans:property name="groupCanvasDAO" ref="groupCanvasDAO"/>
    </beans:bean>

    <!-- Section beans begin here -->
    <beans:bean id="sectionDAO" class="com.journaldev.spring.dao.SectionDAOImpl">
        <beans:property name="sessionFactory"
                        ref="hibernate4AnnotatedSessionFactory"/>
    </beans:bean>

    <beans:bean id="sectionService"
                class="com.journaldev.spring.service.SectionServiceImpl">
        <beans:property name="sectionDAO" ref="sectionDAO"/>
    </beans:bean>

    <!-- Group Section beans begin here -->
    <beans:bean id="groupSectionDAO"
                class="com.journaldev.spring.dao.GroupSectionDAOImpl">
        <beans:property name="sessionFactory"
                        ref="hibernate4AnnotatedSessionFactory"/>
    </beans:bean>

    <beans:bean id="groupSectionService"
                class="com.journaldev.spring.service.GroupSectionServiceImpl">
        <beans:property name="groupSectionDAO" ref="groupSectionDAO"/>
    </beans:bean>


    <beans:bean id="tokenDAO" class="com.journaldev.spring.dao.TokenDAOImpl">
        <beans:property name="sessionFactory"
                        ref="hibernate4AnnotatedSessionFactory"/>
    </beans:bean>

    <beans:bean id="tokenService"
                class="com.journaldev.spring.service.TokenServiceImpl">
        <beans:property name="tokenDAO" ref="tokenDAO"/>
    </beans:bean>


    <beans:bean id="attachDAO" class="com.journaldev.spring.dao.AttachmentDAOImpl">
        <beans:property name="sessionFactory"
                        ref="hibernate4AnnotatedSessionFactory"/>
    </beans:bean>

    <beans:bean id="attachService"
                class="com.journaldev.spring.service.AttachmentServiceImpl">
        <beans:property name="attachmentDAO" ref="attachDAO"/>
    </beans:bean>


    <beans:bean id="mattachDAO"
                class="com.journaldev.spring.dao.GroupAttachmentsDAOImpl">
        <beans:property name="sessionFactory"
                        ref="hibernate4AnnotatedSessionFactory"/>
    </beans:bean>

    <beans:bean id="mattachService"
                class="com.journaldev.spring.service.GroupAttachmentsServiceImpl">
        <beans:property name="groupAttachmentsDAO" ref="mattachDAO"/>
    </beans:bean>

    <beans:bean id="waitingDAO"
                class="com.journaldev.spring.dao.WaitingMembersDAOImpl">
        <beans:property name="sessionFactory"
                        ref="hibernate4AnnotatedSessionFactory"/>
    </beans:bean>

    <beans:bean id="waitingService"
                class="com.journaldev.spring.service.WaitingMembersServiceImpl">
        <beans:property name="waitingMembersDAO" ref="waitingDAO"/>
    </beans:bean>

    <beans:bean id="historyDAO"
                class="com.journaldev.spring.dao.NoteHistoryDAOImpl">
        <beans:property name="sessionFactory"
                        ref="hibernate4AnnotatedSessionFactory"/>
    </beans:bean>

    <beans:bean id="historyService"
                class="com.journaldev.spring.service.NoteHistoryServiceImpl">
        <beans:property name="noteHistoryDAO" ref="historyDAO"/>
    </beans:bean>

    <beans:bean id="mhistoryDAO"
                class="com.journaldev.spring.dao.GroupNoteHistoryDAOImpl">
        <beans:property name="sessionFactory"
                        ref="hibernate4AnnotatedSessionFactory"/>
    </beans:bean>

    <beans:bean id="mhistoryService"
                class="com.journaldev.spring.service.GroupNoteHistoryServiceImpl">
        <beans:property name="groupNoteHistoryDAO" ref="mhistoryDAO"/>
    </beans:bean>


    <beans:bean id="feedbackDAO" class="com.journaldev.spring.dao.FeedbackDAOImpl">
        <beans:property name="sessionFactory"
                        ref="hibernate4AnnotatedSessionFactory"/>
    </beans:bean>

    <beans:bean id="feedbackService"
                class="com.journaldev.spring.service.FeedbackServiceImpl">
        <beans:property name="feedbackDAO" ref="feedbackDAO"/>
    </beans:bean>


    <beans:bean id="unreadDAO"
                class="com.journaldev.spring.dao.UnreadNotesDAOImpl">
        <beans:property name="sessionFactory"
                        ref="hibernate4AnnotatedSessionFactory"/>
    </beans:bean>


    <beans:bean id="unreadService"
                class="com.journaldev.spring.service.UnreadNotesServiceImpl">
        <beans:property name="unreadNotesDAO" ref="unreadDAO"/>
    </beans:bean>

    <beans:bean id="sessionStateDAO"
                class="com.journaldev.spring.dao.SessionStateDAOImpl">
        <beans:property name="sessionFactory"
                        ref="hibernate4AnnotatedSessionFactory"/>
    </beans:bean>

    <beans:bean id="sessionService"
                class="com.journaldev.spring.service.SessionStateServiceImpl">
        <beans:property name="sessionStateDAO" ref="sessionStateDAO"/>
    </beans:bean>


    <beans:bean id="featuresDAO"
                class="com.journaldev.spring.dao.FeatureRequestDAOImpl">
        <beans:property name="sessionFactory"
                        ref="hibernate4AnnotatedSessionFactory"/>
    </beans:bean>

    <beans:bean id="featuresService"
                class="com.journaldev.spring.service.FeatureRequestServiceImpl">
        <beans:property name="featureRequestDAO" ref="featuresDAO"/>
    </beans:bean>


    <beans:bean id="featureCommentDAO"
                class="com.journaldev.spring.dao.FeatureCommentDAOImpl">
        <beans:property name="sessionFactory"
                        ref="hibernate4AnnotatedSessionFactory"/>
    </beans:bean>

    <beans:bean id="featureCommentService"
                class="com.journaldev.spring.service.FeatureCommentServiceImpl">
        <beans:property name="featureCommentDAO" ref="featureCommentDAO"/>
    </beans:bean>

    <beans:bean id="featureLikeDAO"
                class="com.journaldev.spring.dao.FeatureLikeDAOImpl">
        <beans:property name="sessionFactory"
                        ref="hibernate4AnnotatedSessionFactory"/>
    </beans:bean>

    <beans:bean id="featureLikeService"
                class="com.journaldev.spring.service.FeatureLikeServiceImpl">
        <beans:property name="featureLikeDAO" ref="featureLikeDAO"/>
    </beans:bean>


    <beans:bean id="onlineUsersDAO"
                class="com.journaldev.spring.dao.OnlineUsersDAOImpl">
        <beans:property name="sessionFactory"
                        ref="hibernate4AnnotatedSessionFactory"/>
    </beans:bean>

    <beans:bean id="onlineUsersService"
                class="com.journaldev.spring.service.OnlineUsersServiceImpl">
        <beans:property name="onlineUsersDAO" ref="onlineUsersDAO"/>
    </beans:bean>

    <beans:bean id="noteCountDAO" class="com.journaldev.spring.dao.NoteCountDAOImpl">
        <beans:property name="sessionFactory"
                        ref="hibernate4AnnotatedSessionFactory"/>
    </beans:bean>

    <beans:bean id="noteCountService"
                class="com.journaldev.spring.service.NoteCountServiceImpl">
        <beans:property name="noteCountDAO" ref="noteCountDAO"/>
    </beans:bean>


    <beans:bean id="noteLockDAO" class="com.journaldev.spring.dao.NoteLockDAOImpl">
        <beans:property name="sessionFactory"
                        ref="hibernate4AnnotatedSessionFactory"/>
    </beans:bean>

    <beans:bean id="noteLockService"
                class="com.journaldev.spring.service.NoteLockServiceImpl">
        <beans:property name="noteLockDAO" ref="noteLockDAO"/>
    </beans:bean>


    <beans:bean id="chatDAO" class="com.journaldev.spring.dao.ChatMessagesDAOImpl">
        <beans:property name="sessionFactory" ref="hibernate4AnnotatedSessionFactory"/>
    </beans:bean>

    <beans:bean id="chatService" class="com.journaldev.spring.service.ChatMessagesServiceImpl">
        <beans:property name="chatDAO" ref="chatDAO"/>
    </beans:bean>


    <beans:bean id="conversationDAO" class="com.journaldev.spring.dao.ConversationDAOImpl">
        <beans:property name="sessionFactory" ref="hibernate4AnnotatedSessionFactory"/>
    </beans:bean>

    <beans:bean id="conversationService" class="com.journaldev.spring.service.ConversationServiceImpl">
        <beans:property name="conversationDAO" ref="conversationDAO"/>
    </beans:bean>

    <beans:bean id="repliesDAO" class="com.journaldev.spring.dao.RepliesDAOImpl">
        <beans:property name="sessionFactory" ref="hibernate4AnnotatedSessionFactory"/>
    </beans:bean>

    <beans:bean id="repliesService" class="com.journaldev.spring.service.RepliesServiceImpl">
        <beans:property name="repliesDAO" ref="repliesDAO"/>
    </beans:bean>


    <beans:bean id="notificationDAO" class="com.journaldev.spring.dao.NotificationDAOImpl">
        <beans:property name="sessionFactory" ref="hibernate4AnnotatedSessionFactory"/>
    </beans:bean>

    <beans:bean id="notificationService" class="com.journaldev.spring.service.NotificationServiceImpl">
        <beans:property name="notificationDAO" ref="notificationDAO"/>
    </beans:bean>


    <beans:bean id="statisticsDAO" class="com.journaldev.spring.dao.StatisticsDAOImpl">
        <beans:property name="sessionFactory" ref="hibernate4AnnotatedSessionFactory"/>
    </beans:bean>

    <beans:bean id="statisticsService" class="com.journaldev.spring.service.StatisticsServiceImpl">
        <beans:property name="statisticsDAO" ref="statisticsDAO"/>
    </beans:bean>


    <beans:bean id="privateChannelDAO" class="com.journaldev.spring.dao.PrivateChannelDAOImpl">
        <beans:property name="sessionFactory" ref="hibernate4AnnotatedSessionFactory"/>
    </beans:bean>

    <beans:bean id="privateChannelService" class="com.journaldev.spring.service.PrivateChannelServiceImpl">
        <beans:property name="privateChannelDAO" ref="privateChannelDAO"/>
    </beans:bean>


 <!--   <beans:bean id="groupChannelsDAO" class="com.journaldev.spring.dao.GroupChannelsDAOImpl">
        <beans:property name="sessionFactory" ref="hibernate4AnnotatedSessionFactory"/>
    </beans:bean>

    <beans:bean id="groupChannelsService" class="com.journaldev.spring.service.GroupChannelsServiceImpl">
        <beans:property name="groupChannelsDAO" ref="groupChannelsDAO"/>
    </beans:bean>-->

    <!--<beans:bean id="chatBean" class="com.journaldev.spring.chat.ChatServiceImpl"/>-->

    <!--Login bean -->
    <beans:bean id="LoginServiceImpl"
                class="com.journaldev.spring.service.LoginServiceImpl"/>

    <context:component-scan base-package="com.journaldev.spring"/>

    <!-- locale -->
    <beans:bean id="messageSource"
                class="org.springframework.context.support.ReloadableResourceBundleMessageSource">
        <beans:property name="basename" value="classpath:/locale/messages"/>
        <beans:property name="defaultEncoding" value="UTF-8"/>
    </beans:bean>

    <context:property-placeholder location="classpath:application.properties"/>

    <!-- default locale -->
    <beans:bean id="localeResolver"
                class="org.springframework.web.servlet.i18n.SessionLocaleResolver">
        <beans:property name="defaultLocale" value="de"/>
    </beans:bean>

    <!-- Change locale via url. -->
    <beans:bean id="localeChangeInterceptor"
                class="org.springframework.web.servlet.i18n.LocaleChangeInterceptor">
        <beans:property name="paramName" value="lang"/>
    </beans:bean>

    <beans:bean id="handlerMapping"
                class="org.springframework.web.servlet.mvc.support.ControllerClassNameHandlerMapping">
        <beans:property name="interceptors">
            <beans:list>
                <beans:ref bean="localeChangeInterceptor"/>
            </beans:list>
        </beans:property>
    </beans:bean>

    <beans:bean class="com.journaldev.spring.service.DoNotTruncateMyUrls"/>

    <beans:bean id="multipartResolver"
                class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
        <beans:property name="maxUploadSize" value="52428800"/>
    </beans:bean>

    <beans:bean
            class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter">
        <beans:property name="messageConverters" ref="jsonMessageConverter"/>
    </beans:bean>

    <beans:bean id="jsonMessageConverter"
                class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter"/>

</beans:beans>

Answer 1

您的问题可能是，如果为同一方法声明了@Scheduled和@Transactional它们不能很好地配合使用。

尝试将调度的方法外部化到另一个bean中，并使用dao的自动装配实例（具有事务方法）

Answer 2

我认为您@Transactional注释不是“生效”。 原因是：

您在XML文件中定义bean，但也使用<context:component-scan>声明。 我认为，如果您为<context:component-scan>添加了所有预期的软件包，那么您的问题将得到解决，并且您将不必在xml中定义bean。

在您的DAO代码中，编写一些日志记录语句以检查Transaction是否处于活动状态。 您可以使用TransactionSynchronizationManager.isActualTransactionActive方法来检测是否有任何交易正在进行。

Answer 3

首先开始：

1. 将您的删除代码放入try-catch； 在尝试中，在查询执行后，放置发送邮件代码。
2. 检查该表中是否有预期的记录，并且查询是否正确。 使用查询浏览器检查要开始的其他列（可能是id）。 稍后将查询更改为此。