Приложение Spring MVC 3.0, использующее JPA, не сохраняется в базе данных

Question

Я пытаюсь понять, как использовать Spring MVC, и я собрал пример приложения для этого. Я использовал Roo для базовой настройки, но я добавил немало своих вещей.

Я пытаюсь использовать JPA с транзакциями для взаимодействия с моей базой данных MySQL, но, насколько я могу судить, транзакции никогда не создаются. Я проследил это до вызова метода EntityManagerFactoryUtils.doGetTransactionalEntityManager, и он, похоже, не удается проверить TransactionSynchronizationManager.isSynchronizationActive ()

Я смотрел на других людей, имеющих эту проблему, и похоже, что им нужно было добавить аннотацию @Transactional к их классам обслуживания, но у меня уже было это, и это не работало.

Вот мои настройки:

web.xml

<?xml version="1.0" encoding="ISO-8859-1"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
   xmlns="http://java.sun.com/xml/ns/javaee" 
   xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
   xsi:schemaLocation="http://java.sun.com/xml/ns/javaee 
   http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" version="2.5">
  <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath*:META-INF/spring/applicationContext*.xml</param-value>
  </context-param>
  <listener>
    <listener-class>
      org.springframework.web.context.ContextLoaderListener
    </listener-class>
  </listener>
  <filter>
    <filter-name>OpenEntityManagerInViewFilter</filter-name>
    <filter-class>
      org.springframework.orm.jpa.support.OpenEntityManagerInViewFilter
    </filter-class>
  </filter>
  <filter-mapping>
    <filter-name>OpenEntityManagerInViewFilter</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping>
  <servlet>
    <servlet-name>mvcTest</servlet-name>
    <servlet-class>
      org.springframework.web.servlet.DispatcherServlet
    </servlet-class>
    <init-param>
      <param-name>contextConfigLocation</param-name>
      <param-value>/WEB-INF/spring/webmvc-config.xml</param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
  </servlet>
  <servlet-mapping>
    <servlet-name>mvcTest</servlet-name>
    <url-pattern>*.do</url-pattern>
  </servlet-mapping>
  <servlet-mapping>
    <servlet-name>mvcTest</servlet-name>
    <url-pattern>/</url-pattern>
  </servlet-mapping>
  <welcome-file-list>
    <welcome-file>home.jsp</welcome-file>
  </welcome-file-list>
</web-app>

applicationContext.xml

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<beans xmlns="http://www.springframework.org/schema/beans" 
    xmlns:aop="http://www.springframework.org/schema/aop" 
    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:xsi="http://www.w3.org/2001/XMLSchema-instance" 
    xsi:schemaLocation="http://www.springframework.org/schema/aop 
        http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
        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/jee http://www.springframework.org/schema/jee/spring-jee-3.0.xsd
        http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd">

    <!--
        This will automatically locate any and all property files you have
        within your classpath, provided they fall under the META-INF/spring
        directory. The located property files are parsed and their values can
        then be used within application context files in the form of
        ${propertyKey}.
    -->
    <context:property-placeholder location="classpath*:META-INF/spring/*.properties"/>
    <!--
        Turn on AspectJ @Configurable support. As a result, any time you
        instantiate an object, Spring will attempt to perform dependency
        injection on that object. This occurs for instantiation via the "new"
        keyword, as well as via reflection. This is possible because AspectJ
        is used to "weave" Roo-based applications at compile time. In effect
        this feature allows dependency injection of any object at all in your
        system, which is a very useful feature (without @Configurable you'd
        only be able to dependency inject objects acquired from Spring or
        subsequently presented to a specific Spring dependency injection
        method). Roo applications use this useful feature in a number of
        areas, such as @PersistenceContext injection into entities.
    -->
    <context:spring-configured/>
    <!--
        This declaration will cause Spring to locate every @Component,
        @Repository and @Service in your application. In practical terms this
        allows you to write a POJO and then simply annotate the new POJO as an
        @Service and Spring will automatically detect, instantiate and
        dependency inject your service at startup time. Importantly, you can
        then also have your new service injected into any other class that
        requires it simply by declaring a field for your service inside the
        relying class and Spring will inject it. Note that two exclude filters
        are declared. The first ensures that Spring doesn't spend time
        introspecting Roo-specific ITD aspects. The second ensures Roo doesn't
        instantiate your @Controller classes, as these should be instantiated
        by a web tier application context. Refer to web.xml for more details
        about the web tier application context setup services.

        Furthermore, this turns on @Autowired, @PostConstruct etc support. These 
        annotations allow you to use common Spring and Java Enterprise Edition 
        annotations in your classes without needing to do any special configuration. 
        The most commonly used annotation is @Autowired, which instructs Spring to
        dependency inject an object into your class.
    -->
    <context:component-scan base-package="com.sedi.test">
        <context:exclude-filter expression="org.springframework.stereotype.Controller" type="annotation"/>
    </context:component-scan>
    <bean class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close" id="dataSource">
        <property name="driverClassName" value="${database.driverClassName}"/>
        <property name="url" value="${database.url}"/>
        <property name="username" value="${database.username}"/>
        <property name="password" value="${database.password}"/>
        <property name="testOnBorrow" value="true"/>
        <property name="testOnReturn" value="true"/>
        <property name="testWhileIdle" value="true"/>
        <property name="timeBetweenEvictionRunsMillis" value="1800000"/>
        <property name="numTestsPerEvictionRun" value="3"/>
        <property name="minEvictableIdleTimeMillis" value="1800000"/>
        <property name="validationQuery" value="SELECT 1"/>
    </bean>
    <bean class="org.springframework.orm.jpa.JpaTransactionManager" id="transactionManager">
        <property name="entityManagerFactory" ref="entityManagerFactory"/>
    </bean>
    <tx:annotation-driven/>

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

    <bean class="org.springframework.dao.annotation.PersistenceExceptionTranslationPostProcessor"/>

    <bean class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean" id="entityManagerFactory">
        <property name="persistenceUnitName" value="persistenceUnit"/>
        <property name="dataSource" ref="dataSource"/>
    </bean>
</beans>

webmvc-config.xml

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<beans xmlns="http://www.springframework.org/schema/beans" 
    xmlns:context="http://www.springframework.org/schema/context" 
    xmlns:mvc="http://www.springframework.org/schema/mvc" 
    xmlns:p="http://www.springframework.org/schema/p" 
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
    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/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd">

    <!-- The controllers are autodetected POJOs labeled with the @Controller annotation. -->
    <context:component-scan base-package="com.sedi.test" use-default-filters="false">
        <context:include-filter expression="org.springframework.stereotype.Controller" type="annotation"/>
    </context:component-scan>

    <!-- Turns on support for mapping requests to Spring MVC @Controller methods
         Also registers default Formatters and Validators for use across all @Controllers -->
    <mvc:annotation-driven />

    <!-- Handles HTTP GET requests for /resources/** by efficiently serving up static resources -->
    <mvc:resources location="/, classpath:/META-INF/web-resources/" mapping="/resources/**"/>

    <!-- Allows for mapping the DispatcherServlet to "/" by forwarding static resource requests to the container's default Servlet -->
    <mvc:default-servlet-handler/>

    <!-- register "global" interceptor beans to apply to all registered HandlerMappings -->
    <mvc:interceptors>
        <bean class="org.springframework.web.servlet.theme.ThemeChangeInterceptor"/>
        <bean class="org.springframework.web.servlet.i18n.LocaleChangeInterceptor" p:paramName="lang"/>
    </mvc:interceptors>

    <!-- selects a static view for rendering without the need for an explicit controller -->
    <mvc:view-controller path="/" view-name="index"/>
    <mvc:view-controller path="/uncaughtException"/>
    <mvc:view-controller path="/resourceNotFound"/>
    <mvc:view-controller path="/dataAccessFailure"/>

    <!-- Resolves localized messages*.properties and application.properties files in the application to allow for internationalization. 
        The messages*.properties files translate Roo generated messages which are part of the admin interface, the application.properties
        resource bundle localizes all application specific messages such as entity names and menu items. -->
    <bean class="org.springframework.context.support.ReloadableResourceBundleMessageSource" id="messageSource" p:basenames="WEB-INF/i18n/messages,WEB-INF/i18n/application" p:fallbackToSystemLocale="false"/>

    <!-- store preferred language configuration in a cookie -->
    <bean class="org.springframework.web.servlet.i18n.CookieLocaleResolver" id="localeResolver" p:cookieName="locale"/> 

    <!-- resolves localized <theme_name>.properties files in the classpath to allow for theme support -->
    <bean class="org.springframework.ui.context.support.ResourceBundleThemeSource" id="themeSource"/>

    <!-- store preferred theme configuration in a cookie -->
    <bean class="org.springframework.web.servlet.theme.CookieThemeResolver" id="themeResolver" p:cookieName="theme" p:defaultThemeName="standard"/>

    <!-- This bean resolves specific types of exceptions to corresponding logical - view names for error views. 
         The default behaviour of DispatcherServlet - is to propagate all exceptions to the servlet container: 
         this will happen - here with all other types of exceptions. -->
    <bean class="org.springframework.web.servlet.handler.SimpleMappingExceptionResolver" p:defaultErrorView="uncaughtException">
        <property name="exceptionMappings">
            <props>
                <prop key=".DataAccessException">dataAccessFailure</prop>
                <prop key=".NoSuchRequestHandlingMethodException">resourceNotFound</prop>
                <prop key=".TypeMismatchException">resourceNotFound</prop>
                <prop key=".MissingServletRequestParameterException">resourceNotFound</prop>
            </props>
        </property>
    </bean>

    <!-- allows for integration of file upload functionality -->
    <bean class="org.springframework.web.multipart.commons.CommonsMultipartResolver" id="multipartResolver"/>
    <bean class="org.springframework.web.servlet.view.UrlBasedViewResolver" id="tilesViewResolver">
        <property name="viewClass" value="org.springframework.web.servlet.view.tiles2.TilesView"/>
    </bean>
    <bean class="org.springframework.web.servlet.view.tiles2.TilesConfigurer" id="tilesConfigurer">
    <property name="definitions">
      <list>
        <value>/WEB-INF/layouts/layouts.xml</value>
        <!-- Scan views directory for Tiles configurations -->
        <value>/WEB-INF/views/**/views.xml</value>
      </list>
    </property>
  </bean>
</beans>

persistance.xml

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<persistence xmlns="http://java.sun.com/xml/ns/persistence" 
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
    version="2.0" 
    xsi:schemaLocation="http://java.sun.com/xml/ns/persistence 
        http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd">
  <persistence-unit name="persistenceUnit" transaction-type="RESOURCE_LOCAL">
        <provider>org.hibernate.ejb.HibernatePersistence</provider>
        <properties>
            <property name="hibernate.dialect" value="org.hibernate.dialect.MySQL5InnoDBDialect"/>
            <!-- value="create" to build a new database on each run; value="update" to modify an existing database; value="create-drop" means the same as "create" but also drops tables when Hibernate closes; value="validate" makes no changes to the database -->
            <property name="hibernate.hbm2ddl.auto" value="create"/>
            <property name="hibernate.ejb.naming_strategy" value="org.hibernate.cfg.ImprovedNamingStrategy"/>
            <property name="hibernate.connection.charSet" value="UTF-8"/>
            <!-- Uncomment the following two properties for JBoss only -->
            <!-- property name="hibernate.validator.apply_to_ddl" value="false" /-->
            <!-- property name="hibernate.validator.autoregister_listeners" value="false" /-->
        </properties>
    </persistence-unit>
</persistence>

Вот услуга, которая вызывается:

package com.sedi.test.service;

import java.util.List;

import javax.inject.Inject;

import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import com.sedi.test.domain.Calendar;
import com.sedi.test.repository.CalendarDao;

@Service("calendarService")
@Transactional(readOnly = false)
public class CalendarServiceImpl implements CalendarService{
    private CalendarDao calendarDao;

    @Inject
    public void setCalendarDao(CalendarDao calendarDao){
        this.calendarDao = calendarDao;
    }

    public Calendar get(Long id){
        return calendarDao.get(id);
    }

    public List<Calendar> getAll(){
        return calendarDao.getAll();
    }

    public void save(Calendar object){
        calendarDao.save(object);
    }

    public void delete(Calendar object){
        calendarDao.delete(object);
    }

    public void delete(Long id){
        delete(get(id));
    }

}

Это класс DAO, который использует:

package com.sedi.test.repository;

import org.springframework.stereotype.Repository;

import com.sedi.test.domain.Calendar;
import com.sedi.util.mvc.domain.dao.GenericDaoJpa;

@Repository("calendarDao")
public class CalendarDaoJpa extends GenericDaoJpa<Calendar> implements CalendarDao{

    public CalendarDaoJpa(){
        super(Calendar.class);
    }
}

И, наконец, это GenericDao, который наследуется от:

package com.sedi.util.mvc.domain.dao;

import java.io.Serializable;
import java.util.Iterator;
import java.util.List;

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

import org.hibernate.search.jpa.FullTextEntityManager;
import org.hibernate.search.jpa.Search;
import org.springframework.dao.DataAccessException;

@SuppressWarnings("unchecked")
public class GenericDaoJpa<T extends Serializable> implements GenericDao<T>{

    private Class<T> type;

    protected EntityManager entityManager;

    public GenericDaoJpa(Class<T> type){
        super();
        this.type = type;
    }

    @PersistenceContext
    public void setEntityManager(EntityManager entityManager){
        this.entityManager = entityManager;
    }

    public T get(Long id){
        return (T) entityManager.find(type, id);
    }

    public List<T> getAll(){
        return entityManager.createQuery("select obj from "+type.getName()+" obj").getResultList();
    }

    public void save(T object) throws DataAccessException{
        entityManager.merge(object);
    }

    public void delete(T object) throws DataAccessException{
        entityManager.remove(object);
    }

    public void indexEntity(T object){
        FullTextEntityManager fullTextEntityManager = Search.getFullTextEntityManager(entityManager);
        fullTextEntityManager.index(object);
    }

    public void indexAllItems(){
        FullTextEntityManager fullTextEntityManager = Search.getFullTextEntityManager(entityManager);
        List<T> results = fullTextEntityManager.createQuery("from "+type.getCanonicalName()).getResultList();
        int counter = 0, numItemsInGroup = 10;
        Iterator<T> resultsIt = results.iterator();
        while (resultsIt.hasNext()) {
            fullTextEntityManager.index(resultsIt.next());
            if (counter++%numItemsInGroup==0) {
                fullTextEntityManager.flushToIndexes();
                fullTextEntityManager.clear();
            }
        }
    }

}

Как я уже сказал, я проследил это, и это поражает все классы. Я знаю, что он попадает в базу данных, потому что таблицы воссоздаются, если я их удаляю. Eclipse (ну, на самом деле Spring Tool Suite) говорит мне, что метод сохранения службы рекомендуется org.springframework.transaction.interceptor.TransactionInterceptor.invoke (org.aopalliance.intercept.MethodInvocation).

Я подозреваю, что я сделал что-то не так в applicationContext.xml в отношении tx, но похоже, откуда я получил информацию. Я как бы рву свои волосы здесь. Кто-нибудь знает, какую ошибку (скорее всего, совершенно очевидную) я совершаю?

Большое спасибо за ваше время

Answer 1

Вы пытались использовать другой тип entityManagerFactory?

<bean id="entityManagerFactory"
    class="org.springframework.orm.jpa.LocalEntityManagerFactoryBean">
    <property name="persistenceUnitName" value="persistenceUnit"/>
    <property name="dataSource" ref="dataSource"/>
</bean>

Spring doco для LocalEntityManagerFactoryBean состояний: "Это самый простой способнастроить совместно используемый JPA EntityManagerFactory в контексте приложения Spring ".Попробуйте использовать это - кажется, есть меньше способов сделать это ужасно неправильно; -)