SpringBoot2 多数据源、多事务配置

发表于

添加事务支持

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@EnableTransactionManagement

添加数据源配置

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#master
spring.datasource.master.jdbc-url=jdbc:mysql://localhost:3306/
spring.datasource.master.username=root
spring.datasource.master.password=root
#slave
spring.datasource.slave.jdbc-url=jdbc:mysql://localhost:3306/
spring.datasource.slave.username=root
spring.datasource.slave.password=root

加载配置

DataSourceConfig.java

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/**
 * Created by xiehui1956(@)gmail.com on 2020/4/26
 */
@Configuration
public class DataSourceConfig {

    private final Logger logger = LoggerFactory.getLogger(getClass());

    @Primary
    @Bean(name = "masterDataSource")
    @Qualifier(value = "masterDataSource")
    @ConfigurationProperties(prefix = "spring.datasource.master")
    public DataSource getDefaultDataSource() {
        return DataSourceBuilder.create().build();
    }

    @Bean(name = "slaveDataSource")
    @Qualifier(value = "slaveDataSource")
    @ConfigurationProperties(prefix = "spring.datasource.slave")
    public DataSource getServiceClickHouseDataSource() {
        return DataSourceBuilder.create().build();
    }

    @Bean(name = "masterJdbcTemplate")
    public JdbcTemplate masterJdbcTemplate(@Qualifier(value = "masterDataSource") DataSource dataSource) {
        return new JdbcTemplate(dataSource);
    }

    @Bean(name = "slaveJdbcTemplate")
    public JdbcTemplate slaveJdbcTemplate(@Qualifier(value = "slaveDataSource") DataSource dataSource) {
        return new JdbcTemplate(dataSource);
    }
}

添加事务管理支持

DataSourceMasterManager.java
DataSourceSlaveManager.java

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/**
 * Created by xiehui1956(@)gmail.com on 2020/4/26
 */
@Configuration
@EnableTransactionManagement
@EnableJpaRepositories(entityManagerFactoryRef = "entityManagerFactoryMaster"
        , transactionManagerRef = "transactionManagerMaster"
        , basePackages = {"com.dao"})
public class DataSourceMasterManager {

    @Autowired
    @Qualifier("masterDataSource")
    private DataSource masterDataSource;

    @Primary
    @Bean(name = "entityManagerFactoryMaster")
    public LocalContainerEntityManagerFactoryBean entityManagerFactoryBean(EntityManagerFactoryBuilder builder) {
        return builder
                .dataSource(masterDataSource)
                .packages("com.entity")
                .persistenceUnit("masterDataPersistenceUnit")
                .build();
    }

    @Bean("transactionManagerMaster")
    public PlatformTransactionManager transactionManager(EntityManagerFactoryBuilder builder) {
        return new JpaTransactionManager(entityManagerFactoryBean(builder).getObject());
    }
}

/**
 * Created by xiehui1956(@)gmail.com on 2020/4/26
 */
@Configuration
@EnableTransactionManagement
@EnableJpaRepositories(entityManagerFactoryRef = "entityManagerFactorySlave"
        , transactionManagerRef = "transactionManagerSlave"
        , basePackages = {"com.dto"})
public class DataSourceSlaveManager {

    @Autowired
    @Qualifier("slaveDataSource")
    private DataSource slaveDataSource;

    @Bean(name = "entityManagerFactorySlave")
    public LocalContainerEntityManagerFactoryBean entityManagerFactoryBean(EntityManagerFactoryBuilder builder) {
        return builder
                .dataSource(slaveDataSource)
                .packages("com.deo")
                .persistenceUnit("slaveDataPersistenceUnit")
                .build();
    }

    @Bean("transactionManagerSlave")
    public PlatformTransactionManager transactionManager(EntityManagerFactoryBuilder builder) {
        return new JpaTransactionManager(entityManagerFactoryBean(builder).getObject());
    }
}

使用

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@Resource
@Qualifier(value = "masterJdbcTemplate")
private JdbcTemplate jdbcTemplate;

@GetMapping("/tt")
public CommonResult test(CommonResult commonResult) {
	List<Map<String, Object>> show_tables = jdbcTemplate.queryForList("show tables");
	return commonResult.setData(show_tables);
}

返回结果

图片