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From GitBox <...@apache.org>
Subject [GitHub] cyfonly commented on issue #1472: 直连模式参数回调功能抛异常
Date Fri, 30 Mar 2018 12:54:59 GMT
cyfonly commented on issue #1472: 直连模式参数回调功能抛异常
URL: https://github.com/apache/incubator-dubbo/issues/1472#issuecomment-377518376
 
 
   ```
   public interface CallbackListener{
       void change(String msg);
   }
   ```
   
   ```
   public interface CallbackService {
       void addListener(String key, CallbackListener listener);
   }
   ```
   
   ```
   public class CallbackServiceImpl implements CallbackService{
       @Override
       public void addListener(String key, CallbackListener listener) {
           System.out.println("-------------Provider receive: key=" + key);
           listener.change("hehehehehe");
       }
   }
   ```
   
   ```
   public class Provider {
       public static void main(String[] args) throws IOException {
           ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext(new
String[] { "classpath:callback_provider.xml" });
           context.start();
           System.in.read();
       }
   }
   ```
   
   ```
   public class Consumer {
       public static void main(String[] args) throws IOException {
           ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext("classpath:callback_consumer.xml");
           context.start();
           CallbackService callbackService = (CallbackService) context.getBean("callbackService");
           callbackService.addListener("Chenng", new CallbackListener() {
               @Override
               public void change(String msg) {
                   System.out.println("============Consumer reveive:msg=" + msg);
               }
           });
       }
   }
   ```
   
   consumer.xml
       ```
       <dubbo:registry register="false"/>
       <dubbo:protocol name="dubbo" port="20880"/>
       <bean id="callbackService" class="com.dubbo.callback.CallbackServiceImpl" />
       <dubbo:service interface="com.dubbo.callback.CallbackService" ref="callbackService">
           <dubbo:method name="addListener">
               <dubbo:argument index="1" callback="true" type="com.dubbo.callback.CallbackListener"/>
           </dubbo:method>
       </dubbo:service>
   ```
   
   provider.xml
   `<dubbo:reference id="callbackService" interface="com.dubbo.callback.CallbackService"
url="dubbo://127.0.0.1:20880"/>`

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