小编典典

Spring Boot / Thymeleaf / Hibernate:带有Java注释的Sessionfactory Bean

spring-boot

我已经使用Thymeleaf和Hibernate用IntelliJ创建了Spring Boot
Web应用程序。到目前为止,我可以创建所有的数据库连接,并且工作正常。据我所知,将Sessionfactory作为bean并在执行db操作的所有服务类中将其自动装配是一个好方法。

我有一个SpringMvcConfiguration作为配置文件,如下所示:

package eu.barz.familykurse.config;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.LocaleResolver;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
import org.springframework.web.servlet.i18n.LocaleChangeInterceptor;
import org.springframework.web.servlet.i18n.SessionLocaleResolver;
import java.util.Locale;


@Configuration
public class SpringMvcConfiguration extends WebMvcConfigurerAdapter{
    @Bean
    public LocaleResolver localeResolver(){
        SessionLocaleResolver sessionLocaleResolver = new SessionLocaleResolver();
        sessionLocaleResolver.setDefaultLocale(Locale.GERMAN);
        return sessionLocaleResolver;
    }

    @Bean
    LocaleChangeInterceptor localeChangeInterceptor(){
        LocaleChangeInterceptor localeChangeInterceptor = new LocaleChangeInterceptor();
        localeChangeInterceptor.setParamName("lang");
        return  localeChangeInterceptor;
    }

    @Override
    public void addInterceptors(InterceptorRegistry interceptorRegistry){
        interceptorRegistry.addInterceptor(localeChangeInterceptor());
    }
}

问题:我已经尝试了很多,但是找不到为SessionFactory声明bean的解决方案。

任何提示将非常有帮助。我应该在这里声明一个sessionfactory和数据源,还是必须在application.properties或仅在hibernate.cfg.xml中声明(当前看起来像这样):

<?xml version='1.0' encoding='utf-8'?>
<!DOCTYPE hibernate-configuration PUBLIC
        "-//Hibernate/Hibernate Configuration DTD//EN"
        "http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
    <session-factory>
        <property name="connection.url">jdbc:mysql://localhost:3306/family_kurse</property>
        <property name="connection.driver_class">com.mysql.jdbc.Driver</property>
        <property name="connection.username">username</property>
        <property name="connection.password">secret</property>

        <property name="dialect">org.hibernate.dialect.MySQL5Dialect</property>
        <property name="hibernate.current_session_context_class">thread</property>
        <property name="show_sql">true</property>
        <mapping class="eu.barz.familykurse.domain.Leader"/>
        <mapping class="eu.barz.familykurse.domain.Course"/>

        <!-- DB schema will be updated if needed -->
        <!-- <property name="hbm2ddl.auto">update</property> -->
    </session-factory>
</hibernate-configuration>

干杯

解:

  1. 我需要如下所述添加豆类

  2. 我必须添加

org.springframework spring-orm 4.3.10.RELEASE到我的pom.xml

  1. 在@SpringBootApplication之后,我必须添加

@EnableAutoConfiguration(排除= {HibernateJpaAutoConfiguration.class})


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2020-05-30

共1个答案

小编典典

由于您使用的是Spring
Boot,因此应该对数据库配置使用不使用XML的配置。spring启动与Hibernate,您需要创建整合LocalSessionFactoryBeanDataSourceHibernateTransactionManagerPersistenceExceptionTranslationPostProcessor豆是这样的:

@Configuration
public class DatabaseConfig {

    @Bean
    public LocalSessionFactoryBean sessionFactory() {
        LocalSessionFactoryBean sessionFactory = new LocalSessionFactoryBean();
        sessionFactory.setDataSource(dataSource());
        sessionFactory.setPackagesToScan("com.example.model");
        sessionFactory.setHibernateProperties(hibernateProperties());

        return sessionFactory;
    }

    @Bean
    public DataSource dataSource() {
        DriverManagerDataSource dataSource = new DriverManagerDataSource();
        dataSource.setDriverClassName("org.postgresql.Driver");
        dataSource.setUrl("jdbc:postgresql://localhost:5432/testdb");
        dataSource.setUsername("root");
        dataSource.setPassword("root");

        return dataSource;
    }

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

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

        return txManager;
    }

    @Bean
    public PersistenceExceptionTranslationPostProcessor exceptionTranslation() {
        return new PersistenceExceptionTranslationPostProcessor();
    }

    Properties hibernateProperties() {
        Properties properties = new Properties();
        properties.setProperty("hibernate.ddl-auto", "update");
        properties.setProperty("hibernate.dialect", "org.hibernate.dialect.PostgreSQLDialect");
        return properties;
    }
}

在上面的数据库配置中,我使用了postgreSQL数据库。

要获得sessionFactory自动装配SessionFactory接口的实例,如下所示:

 @Autowired
 SessionFactory sessionFactory;
2020-05-30