使用JNDI和Hibernate配置Spring

Question

我试图使用此配置，以便使用Hibernate 5和JNDI设置Spring。 但是在启动过程中出现错误。

@Configuration
@EnableTransactionManagement
public class ContextDatasource {

    @Bean
    public LocalSessionFactoryBean sessionFactory() throws NamingException {
        LocalSessionFactoryBean sessionFactory = new LocalSessionFactoryBean();
        sessionFactory.setDataSource(dataSource());
        sessionFactory.setPackagesToScan("org.database.models");
        sessionFactory.setHibernateProperties(hibernateProperties());

        return sessionFactory;
    }

    @Bean
    public PlatformTransactionManager hibernateTransactionManager() throws NamingException {
        HibernateTransactionManager transactionManager
          = new HibernateTransactionManager();
        transactionManager.setSessionFactory(sessionFactory().getObject());
        return transactionManager;
    }

    private final Properties hibernateProperties() {
        Properties hibernateProperties = new Properties();
        hibernateProperties.setProperty(
          "hibernate.hbm2ddl.auto", "create-drop");
        hibernateProperties.setProperty(
          "hibernate.dialect", "org.hibernate.dialect.H2Dialect");

        return hibernateProperties;
    }

    @Bean
    public LocalContainerEntityManagerFactoryBean entityManagerFactory() 
      throws NamingException {
        LocalContainerEntityManagerFactoryBean em 
          = new LocalContainerEntityManagerFactoryBean();
        em.setDataSource(dataSource());
        return em;
    }

    @Bean
    public DataSource dataSource() throws NamingException {
        return (DataSource) new JndiTemplate().lookup("java:comp/env/jdbc/production_gateway");
    }

    @Bean
    public PlatformTransactionManager transactionManager(EntityManagerFactory emf) {
        JpaTransactionManager transactionManager = new JpaTransactionManager();
        transactionManager.setEntityManagerFactory(emf);
        return transactionManager;
    }

}

配置的POM依赖项：

        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-core</artifactId>
            <version>5.2.14.Final</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-orm</artifactId>
            <version>5.0.7.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-entitymanager</artifactId>
            <version>5.3.1.Final</version>
        </dependency>
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-validator</artifactId>
            <version>5.3.6.Final</version>
        </dependency>
        <dependency>
            <groupId>org.eclipse.persistence</groupId>
            <artifactId>javax.persistence</artifactId>
            <version>2.0.0</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-jdbc</artifactId>
            <version>2.0.3.RELEASE</version>
        </dependency>

但是，当我运行代码时，在启动过程中出现错误：

 Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [javax.sql.DataSource]: Factory method 'dataSource' threw exception; nested exception is javax.naming.NameNotFoundException:

配置JNDI的正确方法是什么？ 可能我需要删除一些Java方法？ 我想使用Hibernate 5。

Answer 1

该错误是由于以下事实造成的：没有人为您提供JNDI资源，您需要一个servlet容器（tomcat）或应用程序服务器（weblogic，websphere ecc）来为您提供jndi上下文

对于要通过jndi的tomcat示例，您需要在context.xml示例中指定数据源配置

<Resource
  name="jdbc/production_gateway"
  auth="Container"
  type="javax.sql.DataSource"
  maxActive="100"
  maxIdle="30"
  maxWait="10000"
  driverClassName="com.mysql.jdbc.Driver"
  url="jdbc:mysql://localhost:3306/db"
  username="username"
  password="secret"
/>

或者，您可以使用spring定义数据源，而无需使用jndi