Spring (005) - multi-environment Profile

Configured in multiple environments should be how, such as database connection character, different multiple environments, spring program, probably summed up as follows.

Example, database configuration.

Gets the definition of a database link interface

public interface DataConnection {
    String getConnection();
}

There are two implementations dev and prod

@Component
@Profile("dev")
public class DevDataConnection implements  DataConnection{
    @Override
    public String getConnection() {
        return "dev";
    }
}

@Component
@Profile("prod")
public class ProdDataConnection implements DataConnection{
    @Override
    public String getConnection() {
        return "prod";
    }
}

test:

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(classes = DemoConfiguration.class)
@ActiveProfiles("dev")
public class DemoDaoTest {
    @Autowired
    private DemoDao demoDao;
    @Test
    public void testConnection()
    {
      String connection=  demoDao.testConnection();
      System.out.println(connection);
    }

}

result:

Introduced in the present embodiment is arranged dev