springboot2.x jpa接入多数据源

深碍√TFBOYSˉ_ 2022-10-02 14:42 147阅读 0赞

环境：springboot 2.1.4

数据源引入方式

*  数据源一

@Configuration
    @EnableTransactionManagement
    @EnableJpaRepositories(
            entityManagerFactoryRef = "entityManagerFactoryPrimary",
            transactionManagerRef = "transactionManagerPrimary",
            basePackages = {"com.xxj.primary.repository"}
    )
    public class SourceDataConfig {
    
        @Autowired
        private HibernateProperties hibernateProperties;
    
        @Autowired
        private JpaProperties jpaProperties;
    
        private Map<String, Object> getVendorProperties() {
            return hibernateProperties.determineHibernateProperties(
                    jpaProperties.getProperties(), new HibernateSettings()
            );
        }
    
        @Bean(name = "primaryDataSource")
        @ConfigurationProperties(prefix = "spring.datasource.primary") # 配置数据源获取的涞源
        public DataSource primaryDataSource(){
            return DataSourceBuilder.create().build();
        }
    
        @Bean(name = "entityManagerFactoryPrimary")
        public LocalContainerEntityManagerFactoryBean entityManagerFactoryBean(EntityManagerFactoryBuilder builder, @Qualifier("primaryDataSource") DataSource dataSource) {
            return builder.dataSource(dataSource)
                    .properties(getVendorProperties())
                    .packages("com.xxj.primary.model")
                    .persistenceUnit("primaryPersistenceUnit")
                    .build();
        }
    
    
        @Bean(name = "transactionManagerPrimary")
        public PlatformTransactionManager propertyTransactionManager(
                @Qualifier("entityManagerFactoryPrimary") EntityManagerFactory propertyEntityManagerFactory) {
            return new JpaTransactionManager(propertyEntityManagerFactory);
        }
    }

*  数据源二

@Configuration
    @EnableTransactionManagement
    @EnableJpaRepositories(
            entityManagerFactoryRef = "entityManagerFactorySecond",
            transactionManagerRef = "transactionManagerSecond",
            basePackages = {"com.xxj.second.repository"}
    )
    public class SecondDataConfig {
    
        @Autowired
        private HibernateProperties hibernateProperties;
    
        @Autowired
        private JpaProperties jpaProperties;
    
        private Map<String, Object> getVendorProperties() {
            Map<String, Object> map = hibernateProperties.determineHibernateProperties(
                    jpaProperties.getProperties(), new HibernateSettings());return map;
        }
    
        @Primary
        @Bean(name = "secondDataSource")
        @ConfigurationProperties(prefix = "spring.datasource.second")
        public DataSource targetDataSource(){
            return DataSourceBuilder.create().build();
        }
    
        @Primary
        @Bean(name = "entityManagerFactorySecond")
        public LocalContainerEntityManagerFactoryBean entityManagerFactoryBean(EntityManagerFactoryBuilder builder, @Qualifier("secondDataSource") DataSource dataSource) {
            return builder.dataSource(dataSource)
                    .properties(getVendorProperties())
                    .packages("com.xxj.second.model")
                    .persistenceUnit("targetPersistenceUnit")
                    .build();
        }
    
        @Primary
        @Bean(name = "transactionManagerSecond")
        public PlatformTransactionManager propertyTransactionManager(
                @Qualifier("entityManagerFactorySecond") EntityManagerFactory propertyEntityManagerFactory) {
            return new JpaTransactionManager(propertyEntityManagerFactory);
        }
    }

数据源配置

spring.datasource.primary.jdbc-url = jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=UTF-8&zeroDateTimeBehavior=convertToNull&serverTimezone=Asia/Shanghai&useSSL=false&requireSSL=false
    spring.datasource.primary.username = root
    spring.datasource.primary.password = 1234567
    spring.datasource.primary.driver-class-name = com.mysql.jdbc.Driver
    
    spring.datasource.second.jdbc-url = jdbc:mysql://localhost:3306/test2?useUnicode=true&characterEncoding=UTF-8&zeroDateTimeBehavior=convertToNull&serverTimezone=Asia/Shanghai&useSSL=false&rewriteBatchedStatements=true
    spring.datasource.second.username = root
    spring.datasource.second.password = 1234567
    spring.datasource.second.driver-class-name = com.mysql.jdbc.Driver

springboot 2.x版本jpa多数据源引入跟1.x版本有些不太一样，还需要额外注意。

1.  获取jpa配置的方式
2.  数据源配置为jdbc-url

要注意：packages不能引用相同的model，否则会导致数据库卡死。

转载于:https://www.cnblogs.com/chenkaiyin1201/p/10865153.html