Apollo配置信息被程序识别的方式

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1.API方式直接识别

2.基于java注解的几种方式

3.基于Apollo注解的几种方式

@Configuration
@EnableApolloConfig
public class AppConfig { 
  @Bean 
  public TestApolloAnnotationBean testApolloAnnotationBean() { 
    return new TestApolloAnnotationBean(); 
  }
}

public class TestApolloAnnotationBean { 
  @ApolloConfig 
  private Config config; //inject config for namespace application 
  @ApolloConfig("application") 
  private Config anotherConfig; //inject config for namespace application 
  @ApolloConfig("FX.apollo") 
  private Config yetAnotherConfig; //inject config for namespace FX.apollo 
  /** 
   * ApolloJsonValue annotated on fields example, the default value is specified as empty list - []
   * <br /> 
   * jsonBeanProperty=[{"someString":"hello","someInt":100},{"someString":"world!","someInt":200}]
   */ 
  @ApolloJsonValue("${jsonBeanProperty:[]}") 
  private List<JsonBean> anotherJsonBeans; 

  @Value("${batch:100}") 
  private int batch; 
 
  //config change listener for namespace application 
  @ApolloConfigChangeListener 
  private void someOnChange(ConfigChangeEvent changeEvent) { 
    //update injected value of batch if it is changed in Apollo 
    if (changeEvent.isChanged("batch")) { 
      batch = config.getIntProperty("batch", 100); 
    }
  }
  //config change listener for namespace application 
  @ApolloConfigChangeListener("application") 
  private void anotherOnChange(ConfigChangeEvent changeEvent) { 
    //do something 
  }
  //config change listener for namespaces application and FX.apollo 
  @ApolloConfigChangeListener({"application", "FX.apollo"}) 
  private void yetAnotherOnChange(ConfigChangeEvent changeEvent) { 
    //do something 
  }

  //example of getting config from Apollo directly 
  //this will always return the latest value of timeout 
  public int getTimeout() { 
    return config.getIntProperty("timeout", 200); 
  }

  //example of getting config from injected value 
  //the program needs to update the injected value when batch is changed in Apollo using @ApolloConfigChangeListener shown above 
  public int getBatch() { 
    return this.batch; 
  }

  private static class JsonBean{ 
    private String someString; 
    private int someInt; 
  }
}

4.Spring的xml格式整合Apollo

<?xml version="1.0" encoding="UTF-8"?> 

<beans xmlns="[<u>http://www.springframework.org/schema/beans</u>](http://www.springframework.org/schema/beans)" 

       xmlns:xsi="[<u>http://www.w3.org/2001/XMLSchema-instance</u>](http://www.w3.org/2001/XMLSchema-instance)" 

       xmlns:apollo="[<u>http://www.ctrip.com/schema/apollo</u>](http://www.ctrip.com/schema/apollo)" 

       xsi:schemaLocation="[<u>http://www.springframework.org/schema/beans</u>](http://www.springframework.org/schema/beans) [<u>http://www.springframework.org/schema/beans/spring-beans.xsd</u>](http://www.springframework.org/schema/beans/spring-beans.xsd) 

       [<u>http://www.ctrip.com/schema/apollo</u>](http://www.ctrip.com/schema/apollo) [<u>http://www.ctrip.com/schema/apollo.xsd</u>](http://www.ctrip.com/schema/apollo.xsd)"> 

    <apollo:config order="2"/><!—-启用默认的namespaces--> 

    <!-- 这个是最复杂的配置形式，指示Apollo注入FX.apollo和FX.soa namespace的配置到Spring环境中，并且顺序在application前面 --> 

    <apollo:config namespaces="FX.apollo,FX.soa" order="1"/> 

    <bean class="com.ctrip.framework.apollo.spring.TestXmlBean"> 

        <property name="timeout" value="${timeout:100}"/> 

        <property name="batch" value="${batch:200}"/> 

    </bean>

</beans>

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