参数回调

服务接口示例

CallbackService.java

CallbackListener.java

    void changed(String msg);
}

服务提供者接口实现示例

服务提供者配置示例

<bean id="callbackService" class="com.callback.impl.CallbackServiceImpl" />
<dubbo:service interface="com.callback.CallbackService" ref="callbackService" connections="1" callbacks="1000">
        <dubbo:argument index="1" callback="true" />
        <!--也可以通过指定类型的方式-->
        <!--<dubbo:argument type="com.demo.CallbackListener" callback="true" />-->
    </dubbo:method>

服务消费者配置示例

服务消费者调用示例

ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext("classpath:consumer.xml");
CallbackService callbackService = (CallbackService) context.getBean("callbackService");
callbackService.addListener("http://10.20.160.198/wiki/display/dubbo/foo.bar", new CallbackListener(){
    public void changed(String msg) {
        System.out.println("callback1:" + msg);

• 2.0.6 及其以上版本支持