本地環境時覆蓋Apollo配置

如果在本地環境，需要進行某些配置的更改，但是只是為了本地開發方便，例如服務端口的更改，Eureka注冊地址的更改，那么可以使用該組件進行配置覆蓋。

分步指南

1. 實現原理
2. 代碼實現
3. 適用場景

 

一、實現原理

 

 

二、代碼實現

LocalApplicationRecoverConfiguration：

 

@Configuration

@Slf4j

@ConditionalOnProperty(value = "spring.profiles.active",havingValue = "local")

public class LocalApplicationRecoverConfiguration{

 

@Bean

public PropertySourcesProcessor configPropertySourcesProcessor() {

log.info("use local configPropertySourcesProcessor");

return new LocalConfigPropertySourcesProcessor();

}

 

}

 

LocalConfigPropertySourcesProcessor：

 

@Slf4j
public class LocalConfigPropertySourcesProcessor extends PropertySourcesProcessor implements  BeanDefinitionRegistryPostProcessor {

  private static final String LOCAL_ACTIVE = "local";

  private static final String[] LOCAL_APPLICATIONS = new String[]{"applicationConfig: [classpath:/application.yml]","applicationConfig: [classpath:/application-local.yml]","applicationConfig: [classpath:/application-local.yaml]","applicationConfig: [classpath:/application-local.properties]"};

  private int order = Integer.MAX_VALUE;

  private ConfigurableEnvironment environment;

  @Override
  public void postProcessBeanDefinitionRegistry(BeanDefinitionRegistry registry) throws BeansException {

  }

  @Override
  public void postProcessBeanFactory(ConfigurableListableBeanFactory configurableListableBeanFactory) throws BeansException {
    String[] activeProfiles = environment.getActiveProfiles();
    if(activeProfiles != null){
      for (String activeProfile : activeProfiles) {
        if(LOCAL_ACTIVE.equals(activeProfile)){
          MutablePropertySources propertySources = environment.getPropertySources();
          for (String localApplication : LOCAL_APPLICATIONS) {
            PropertySource<?> propertySource = propertySources.get(localApplication);
            if(propertySource != null){
              propertySources.remove(localApplication);
              propertySources.addFirst(propertySource);
            }
          }
        }
      }
    }
  }

  @Override
  public void setEnvironment(Environment environment) {
      this.environment = (ConfigurableEnvironment)environment;
  }

  @Override
  public int getOrder() {
    return order;
  }
}

 

 

三、適用場景

本地需要更改某些配置，但是不能直接更改Apollo，例如端口號的更改，注冊中心地址的更改，數據庫配置信息的更改等。簡而言之就是，配置更改只對自己可見，不能影響其它開發人員。