Java 创建名为“的bean”时出错；“sessionFactory”；

嗨，我是春季和冬眠的初学者，如果这个问题是初级的，我很抱歉。我正在使用Spring4.3.4、Hibernate5.0.3和MySQL。我明白了：

这是我的hibernate.properties

# jdbc.X
jdbc.driverClassName=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/english?createDatabaseIfNotExist=true
jdbc.user=user
jdbc.pass=pass

# hibernate.X
hibernate.dialect=org.hibernate.dialect.MySQL5InnoDBDialect
hibernate.show_sql=false
hibernate.hbm2ddl.auto=update

---

异常是由以下事实引起的：环境不具有此类属性，并且语句

env.getProperty（…）

返回null，无法将其设置为值

---

确保Spring加载了您的

hibernate.properties

文件。或者将此属性移动到

应用程序.properties

文件。

您的回答对我很有帮助。非常感谢你。我刚刚添加了@PropertySource（value={“classpath:hibernate.properties”}），问题就消失了

@Configuration
@EnableTransactionManagement
public class HibernateConfig {

    @Autowired
    Environment env;

    @Bean
    public LocalSessionFactoryBean sessionFactory() throws PropertyVetoException {
        LocalSessionFactoryBean sessionFactory = new LocalSessionFactoryBean();
        sessionFactory.setDataSource(restDataSource());
        sessionFactory.setPackagesToScan("english.entity");
        sessionFactory.setHibernateProperties(hibernateProperties());
        return sessionFactory;
    }

    @Bean
    public ComboPooledDataSource restDataSource() throws PropertyVetoException{
        ComboPooledDataSource dataSource = new ComboPooledDataSource();
        dataSource.setDriverClass(env.getProperty("jdbc.driverClassName"));
        dataSource.setJdbcUrl(env.getProperty("jdbc.url"));
        dataSource.setUser(env.getProperty("jdbc.user"));
        dataSource.setPassword(env.getProperty("jdbc.pass"));
        return dataSource;
    }

    @Bean
    @Autowired
    public HibernateTransactionManager transactionManager(
            SessionFactory sessionFactory) {

        HibernateTransactionManager txManager
                = new HibernateTransactionManager();
        txManager.setSessionFactory(sessionFactory);

        return txManager;
    }

    Properties hibernateProperties() {
        return new Properties() {
            {
                setProperty("hibernate.hbm2ddl.auto",
                        env.getProperty("hibernate.hbm2ddl.auto"));
                setProperty("hibernate.dialect",
                        env.getProperty("hibernate.dialect"));
                setProperty("hibernate.globally_quoted_identifiers",
                        "true");
            }
        };
    }
}

# jdbc.X
jdbc.driverClassName=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/english?createDatabaseIfNotExist=true
jdbc.user=user
jdbc.pass=pass

# hibernate.X
hibernate.dialect=org.hibernate.dialect.MySQL5InnoDBDialect
hibernate.show_sql=false
hibernate.hbm2ddl.auto=update