How to active Profiles in Spring

矫情吗；* 2024-02-23 08:16 111阅读 0赞

## Activate different profiles in different environments ##

### 1. Use @Profile on a Bean ###

# a bean only active during development but not deployed in production
    @Component
    @Profile("dev")
    public class DevDatasourceConfig
    
    # the component is activated only if dev profile is not active:
    @Component
    @Profile("!dev")
    public class DevDatasourceConfig
    
    # Profiles can also be configured in XML.
    <beans profile="dev">
        <bean id="devDatasourceConfig" class="org.baeldung.profiles.DevDatasourceConfig" />
    </beans>

## 2.The Default Profile ##

Spring also provides a way to set the default profile when no other profile is active — by using the `spring.profiles.default` property.

## Example: Separate Data Source Configurations Using Profiles ##

# Consider a scenario :
    # We have to maintain the data source configuration for both the development and production environments.
    public interface DatasourceConfig {
        
        public void setup();
    }
    
    @Component
    @Profile("dev")
    public class DevDatasourceConfig implements DatasourceConfig {
        
        @Override
        public void setup() {
        
            System.out.println("Setting up datasource for DEV environment. ");
        }
    }
    
    @Component
    @Profile("production")
    public class ProductionDatasourceConfig implements DatasourceConfig {
        
        @Override
        public void setup() {
        
           System.out.println("Setting up datasource for PRODUCTION environment. ");
        }
    }
    
    public class SpringProfilesWithMavenPropertiesIntegrationTest {
        
        @Autowired
        DatasourceConfig datasourceConfig;
    
        public void setupDatasource() {
        
            datasourceConfig.setup();
        }
    }
    
    # When the dev profile is active
    Setting up datasource for DEV environment.

**参考：[Spring Profiles][]**

[Spring Profiles]: https://www.baeldung.com/spring-profiles