配置

Question

配置

我已按照本教程在spring-data中配置两个数据源：

https://medium.com/@joeclever/using-multiple-datasources-with-spring-boot-and-spring-data-6430b00c02e7

tomcat启动，两个数据库用flyway初始化成功。

第一个DataSource配置如下所示

@Configuration
@EnableTransactionManagement
@EnableMybatisRepositories(
        value = "com.domain.api.userManagement.repository",
        mapperLocations = {
                "classpath*:/mappers/userManagement/*Mapper.xml",
                "classpath*:/beforemappers/userManagement/*Mapper.xml"
        }
)
public class UserManagementDbConfig {

    @Value("${api.db.userManagement.version}")
    private String version;

    @Primary
    @Bean(name = "dataSource")
    @ConfigurationProperties(prefix = "api.db.userManagement")
    public DataSource dataSource() {
        return DataSourceBuilder.create().build();
    }

    @Bean
    @Qualifier("userManagement")
    public PlatformTransactionManager transactionManager(DataSource dataSource) {
        return new DataSourceTransactionManager(dataSource);
    }

    @Bean
    public SqlSessionFactoryBean sqlSessionFactory() throws Exception {
        final SqlSessionFactoryBean sessionFactory = new SqlSessionFactoryBean();
        sessionFactory.setDataSource(dataSource());
        return sessionFactory;
    }


    @Bean
    public SqlSessionTemplate sqlSessionTemplate(SqlSessionFactory sqlSessionFactory) {
        return new SqlSessionTemplate(sqlSessionFactory);
    }

    @Bean(initMethod = "migrate")
    public Flyway flyway() throws SQLException {
        Flyway flyway = new Flyway();
        flyway.setBaselineOnMigrate(true);
        flyway.setLocations("classpath:db/migration/userManagement");
        flyway.setSqlMigrationPrefix("V");
        flyway.setSqlMigrationSuffix(".sql");
        flyway.setEncoding("UTF-8");
        flyway.setValidateOnMigrate(false);
        flyway.setOutOfOrder(true);
        flyway.setTargetAsString(version);
        flyway.setDataSource(dataSource());
        return flyway;
    }
}

第二个DataSource：

@Configuration
@EnableTransactionManagement
@EnableMybatisRepositories(
        value = "com.domain.api.companyManagement.repository",
        mapperLocations = {
                "classpath*:/mappers/companyManagement/*Mapper.xml",
                "classpath*:/beforemappers/companyManagement/*Mapper.xml"
        }
)
public class CompanyManagementDbConfig {

    @Value("${api.db.companyManagement.version}")
    private String version;

    @Bean(name = "companyManagementDataSource")
    @ConfigurationProperties(prefix = "api.db.companyManagement")
    public DataSource dataSource() {
        return DataSourceBuilder.create().build();
    }

    @Bean
    @Qualifier("companyManagement")
    public PlatformTransactionManager transactionManager(DataSource dataSource) {
        return new DataSourceTransactionManager(dataSource);
    }

    @Bean(name = "companyManagementSqlSessionFactory")
    public SqlSessionFactoryBean sqlSessionFactory() throws Exception {
        final SqlSessionFactoryBean sessionFactory = new SqlSessionFactoryBean();
        sessionFactory.setDataSource(dataSource());
        return sessionFactory;
    }

    @Bean(name = "companyManagementSqlSessionTemplate")
    public SqlSessionTemplate sqlSessionTemplate(SqlSessionFactory sqlSessionFactory) {
        return new SqlSessionTemplate(sqlSessionFactory);
    }


    @Bean(initMethod = "migrate", name = "companyManagementFlyway")
    public Flyway flyway() throws SQLException {
        Flyway flyway = new Flyway();
        flyway.setBaselineOnMigrate(true);
        flyway.setLocations("classpath:db/migration/companyManagement");
        flyway.setSqlMigrationPrefix("V");
        flyway.setSqlMigrationSuffix(".sql");
        flyway.setEncoding("UTF-8");
        flyway.setValidateOnMigrate(false);
        flyway.setOutOfOrder(true);
        flyway.setTargetAsString(version);
        flyway.setDataSource(dataSource());
        return flyway;
    }
}

这就是我编写负责插入的服务的方式：

@Service
public class TestServiceImpl extends AbstractCrudService<TestRepository, Test, Long> implements TestService {

  @Autowired
  public TestServiceImpl(TestRepository repository) {
    super(repository);
  }

  @Override
  @Transactional("companyManagement")
  public void insert(Test user) {
    super.insert(user);
  }

  @Override
  @Transactional("companyManagement")
  public void updateIgnore(Test user) {
    super.updateIgnore(user);
  }
}

application.yml：

server:
  port: 8080
  session:
    timeout: -1

api:
  db:
    userManagement:
      version: 0.0.17
      url: jdbc:postgresql://localhost:3333/UM?autoReconnect=true&useUnicode=true&connectionCollation=utf8_general_ci&characterSetResults=utf8&characterEncoding=UTF-8
      username: ******
      password: ******
      driver-class-name: org.postgresql.Driver
      minIdle: 0
      maxIdle: 10
      maxActive: 50
      maxWait: 6000
      testOnBorrow: true
      validationQuery: SELECT 1
      timeBetweenEvictionRunsMillis: 1800000
      numTestsPerEvictionRun: 50
      minEvictableIdleTimeMillis: 10
      testWhileIdle: true
    companyManagement:
      version: 0.0.17
      url: jdbc:postgresql://localhost:3334/CM?autoReconnect=true&useUnicode=true&connectionCollation=utf8_general_ci&characterSetResults=utf8&characterEncoding=UTF-8
      username: ******
      password: ******
      driver-class-name: org.postgresql.Driver
      minIdle: 0
      maxIdle: 10
      maxActive: 50
      maxWait: 6000
      testOnBorrow: true
      validationQuery: SELECT 1
      timeBetweenEvictionRunsMillis: 1800000
      numTestsPerEvictionRun: 50
      minEvictableIdleTimeMillis: 10
      testWhileIdle: true

结果

Fri Nov 03 17:18:46 ICT 2017
There was an unexpected error (type=Internal Server Error, status=500).
### Error updating database. Cause: org.postgresql.util.PSQLException: ERROR: relation "cm_test" does not exist Position: 13 ### The error may involve com.domain.api.companyManagement.domain.Test._insert-Inline ### The error occurred while setting parameters ### SQL: insert into "cm_test"("name") values(?) ### Cause: org.postgresql.util.PSQLException: ERROR: relation "cm_test" does not exist Position: 13 ; bad SQL grammar []; nested exception is org.postgresql.util.PSQLException: ERROR: relation "cm_test" does not exist Position: 13

此存储库应该尝试插入第二个数据源，但它会尝试使用第一个（主）数据源。

生殖

网址：https://github.com/kopax/spring-data-mybatis-test 您需要使用docker-compose up -d启动这两个数据库，或者不使用docker手动启动这两个数据库。

您是如何设法使用多个DataSource的？

Answer 1

如果使用两个DB，则应创建并指定单独的TransactionManager-s

@Bean(name = "companyTransactionManager")
public PlatformTransactionManager transactionManager() 
{
    return new DataSourceTransactionManager(dataSource());
}

RoleServiceImpl

 @Override
 @Transactional("companyTransactionManager", readOnly = true)
 public Role getByName(String name) {

Answer 2

我认为你有这个问题，因为你在两个配置中都有名为dataSorce的bean，并且在创建Spring Context之后，只能存在一个具有相同名称的bean。尝试重命名你的豆子可能会帮助你。

Answer 3

对我来说问题是，在我阅读的所有教程中，没有看到transactionManager需要@Primary。

我在主数据库中@Primary添加transactionManager后，就可以了！

spring-data多数据源配置运行但插入错误的数据源

配置

结果

生殖

3 个答案: