Java 在Hibernate4和Spring3中使用JPA2时，如何设置SessionFactory？

在控制器中，我调用.persist时代码没有持久化。我还包括了我的AppConfig供参考，以及我的gradle依赖项。这一切都在Tomcat7上

Persistence.xml

<persistence xmlns="http://java.sun.com/xml/ns/persistence"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd"
             version="2.0">
    <persistence-unit name="main">
        <provider>org.hibernate.jpa.HibernatePersistenceProvider</provider>
        <properties>
            <property name="javax.persistence.jdbc.url" value="jdbc:mysql://localhost:3306/dirtylibs"/>
            <property name="javax.persistence.jdbc.user" value="root"/>
            <property name="javax.persistence.jdbc.password" value="password"/>
            <property name="hibernate.hbm2ddl.auto" value="create-drop"/>
            <property name="hibernate.dialect" value="org.hibernate.dialect.MySQL5InnoDBDialect"/>
            <property name="hibernate.format_sql" value="true"/>
            <property name="hibernate.show_sql" value="true"/>
        </properties>
    </persistence-unit>
</persistence>

AppConfig

@Configuration
@EnableWebMvc
@ComponentScan(basePackageClasses = AppConfig.class)
@EnableTransactionManagement
public class AppConfig {


    @Bean
    public InternalResourceViewResolver viewResolver() {
        InternalResourceViewResolver resolver = new InternalResourceViewResolver();
        resolver.setPrefix("/WEB-INF/view/");
        resolver.setSuffix(".jsp");
        return resolver;
    }

    @Bean
    public LocalContainerEntityManagerFactoryBean entityManagerFactory() throws ClassNotFoundException, IllegalAccessException, InstantiationException {
        Class.forName("com.mysql.jdbc.Driver").newInstance(); //This is some wierdness I needed to do because the mysql driver wasn't being picked up correctly
        LocalContainerEntityManagerFactoryBean localContainerEntityManagerFactoryBean = new LocalContainerEntityManagerFactoryBean();
        return localContainerEntityManagerFactoryBean;
    }
}

我的控制器

@Controller
public class SampleController {

    @PersistenceContext
    EntityManager entityManager;
    @RequestMapping("home/test/{id}")
    @ResponseBody
    public List<Integer> getMessagesTest(@PathVariable Integer id) {
        Phrase phrase = new Phrase();
        entityManager.persist(phrase);
        return Arrays.asList(phrase.getId());
    }

}

好的，没问题。看来这项工作将由政府来完成。一旦我开始在AppConfig中配置HibernateTransactionManager，我意识到我还需要一个SessionFactory

我对创建SessionFactory的所有选项以及它与persistence.xml的关系感到非常困惑

<persistence xmlns="http://java.sun.com/xml/ns/persistence"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd"
             version="2.0">
    <persistence-unit name="main">
        <provider>org.hibernate.jpa.HibernatePersistenceProvider</provider>
        <properties>
            <property name="javax.persistence.jdbc.url" value="jdbc:mysql://localhost:3306/dirtylibs"/>
            <property name="javax.persistence.jdbc.user" value="root"/>
            <property name="javax.persistence.jdbc.password" value="password"/>
            <property name="hibernate.hbm2ddl.auto" value="create-drop"/>
            <property name="hibernate.dialect" value="org.hibernate.dialect.MySQL5InnoDBDialect"/>
            <property name="hibernate.format_sql" value="true"/>
            <property name="hibernate.show_sql" value="true"/>
        </properties>
    </persistence-unit>
</persistence>

我的主要问题是，鉴于当前的设置，我应该如何构造会话工厂

查看Spring文档，我似乎必须重复persistence.xml中的所有信息，这对我来说似乎是错误的

任何帮助都将不胜感激，包括对当前设置的批评。我真的希望坚持使用Java配置，并尽可能避免使用XML。我甚至想离开这里所描述的persistence-config.xml，但我想等到它开始工作后再尝试

博兹霍在上的帖子给了我所需要的信息，让我把它联系在一起。我还没有弄清楚是否需要persistence.xml，但现在我正在将实体记录到数据库中

我的新AppConfig现在看起来像这样

@Bean
public LocalContainerEntityManagerFactoryBean entityManagerFactory() throws ClassNotFoundException, IllegalAccessException, InstantiationException {
    Class.forName("com.mysql.jdbc.Driver").newInstance();
    LocalContainerEntityManagerFactoryBean localContainerEntityManagerFactoryBean = new LocalContainerEntityManagerFactoryBean();
    HibernateJpaVendorAdapter hibernateJpaVendorAdapter = new HibernateJpaVendorAdapter();
    hibernateJpaVendorAdapter.setDatabasePlatform("org.hibernate.dialect.MySQL5InnoDBDialect");
    hibernateJpaVendorAdapter.setShowSql(true);
    localContainerEntityManagerFactoryBean.setJpaVendorAdapter(hibernateJpaVendorAdapter);
    return localContainerEntityManagerFactoryBean;
}

@Bean
BasicDataSource basicDataSource() {
    BasicDataSource basicDataSource = new BasicDataSource();

    basicDataSource.setDriverClassName("com.mysql.jdbc.Driver");
    basicDataSource.setUrl("jdbc:mysql://localhost:3306/dirtylibs");
    basicDataSource.setUsername("root");
    basicDataSource.setPassword("password");

    return basicDataSource;
}


@Bean
JpaTransactionManager jpaTransactionManager(LocalContainerEntityManagerFactoryBean localContainerEntityManagerFactoryBean) {
    JpaTransactionManager jpaTransactionManager = new JpaTransactionManager();
    jpaTransactionManager.setEntityManagerFactory(localContainerEntityManagerFactoryBean.getObject());
    return jpaTransactionManager;
}

我不得不为来自Apache的BasicDataSource引入另一个依赖项。这是Gradle坐标

compile group: 'commons-dbcp', name: 'commons-dbcp', version: '1.4'

@Bean
public LocalContainerEntityManagerFactoryBean entityManagerFactory() throws ClassNotFoundException, IllegalAccessException, InstantiationException {
    Class.forName("com.mysql.jdbc.Driver").newInstance();
    LocalContainerEntityManagerFactoryBean localContainerEntityManagerFactoryBean = new LocalContainerEntityManagerFactoryBean();
    HibernateJpaVendorAdapter hibernateJpaVendorAdapter = new HibernateJpaVendorAdapter();
    hibernateJpaVendorAdapter.setDatabasePlatform("org.hibernate.dialect.MySQL5InnoDBDialect");
    hibernateJpaVendorAdapter.setShowSql(true);
    localContainerEntityManagerFactoryBean.setJpaVendorAdapter(hibernateJpaVendorAdapter);
    return localContainerEntityManagerFactoryBean;
}

@Bean
BasicDataSource basicDataSource() {
    BasicDataSource basicDataSource = new BasicDataSource();

    basicDataSource.setDriverClassName("com.mysql.jdbc.Driver");
    basicDataSource.setUrl("jdbc:mysql://localhost:3306/dirtylibs");
    basicDataSource.setUsername("root");
    basicDataSource.setPassword("password");

    return basicDataSource;
}


@Bean
JpaTransactionManager jpaTransactionManager(LocalContainerEntityManagerFactoryBean localContainerEntityManagerFactoryBean) {
    JpaTransactionManager jpaTransactionManager = new JpaTransactionManager();
    jpaTransactionManager.setEntityManagerFactory(localContainerEntityManagerFactoryBean.getObject());
    return jpaTransactionManager;
}

compile group: 'commons-dbcp', name: 'commons-dbcp', version: '1.4'