<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:dubbo="http://code.alibabatech.com/schema/dubbo"
       xmlns="http://www.springframework.org/schema/beans"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
    http://code.alibabatech.com/schema/dubbo http://code.alibabatech.com/schema/dubbo/dubbo.xsd">
    <dubbo:application name="dubbo-invoker-provider">
        <dubbo:parameter key="qos.port" value="22222"/>
    </dubbo:application>
    <dubbo:registry address="zookeeper://127.0.0.1:2181"/>
    <dubbo:protocol name="dubbo" port="20880"/>
    <bean id="userService" class="com.sise.user.service.UserServiceImpl" />
    <dubbo:service interface="com.sise.user.service.UserService" ref="userService" />
</beans>

dubbo.application.name=dubbo-user-service
dubbo.registry.address=zookeeper://127.0.0.1:2181

 -Ddubbo.properties.file=my-dubbo.properties

package com.sise.user.config;
import com.sise.user.service.UserService;
import com.sise.user.service.UserServiceImpl;
import org.apache.dubbo.config.*;
import java.io.IOException;
import java.util.concurrent.CountDownLatch;
/**
 * dubbo里面的自定义配置类
 *
 * @author idea
 * @data 2019/12/29
 */
public class DubboSelfDefConfig {
    /**
     * dubbo的服务暴露
     */
    public void server() {
        ApplicationConfig applicationConfig = new ApplicationConfig();
        applicationConfig.setName("dubbo-server-config");
        RegistryConfig registryConfig = new RegistryConfig();
        registryConfig.setAddress("zookeeper://127.0.0.1:2181");
        ProtocolConfig protocolConfig = new ProtocolConfig();
        protocolConfig.setName("dubbo");
        protocolConfig.setPort(20880);
        protocolConfig.setThreads(200);
        UserService userService = new UserServiceImpl();
        ServiceConfig<UserService> serviceConfig = new ServiceConfig<>();
        serviceConfig.setApplication(applicationConfig);
        serviceConfig.setRegistry(registryConfig);
        serviceConfig.setProtocol(protocolConfig);
        serviceConfig.setInterface(UserService.class);
        serviceConfig.setRef(userService);
        serviceConfig.export();
    }

    public void consumer() {
        ApplicationConfig applicationConfig = new ApplicationConfig();
        applicationConfig.setName("dubbo-client-config");
        RegistryConfig registryConfig = new RegistryConfig();
        registryConfig.setAddress("zookeeper://127.0.0.1:2181");
        ReferenceConfig<UserService> referenceConfig = new ReferenceConfig<>();
        referenceConfig.setApplication(applicationConfig);
        referenceConfig.setRegistry(registryConfig);
        referenceConfig.setInterface(UserService.class);
        UserService localRef = referenceConfig.get();
        localRef.echo("idea");
    }
    public static void main(String[] args) throws InterruptedException, IOException {
        DubboSelfDefConfig d = new DubboSelfDefConfig();
        d.consumer();
        CountDownLatch countDownLatch = new CountDownLatch(1);
        countDownLatch.await();
    }
}

    UserService localRef = referenceConfig.get();
    localRef.echo("idea");

@RestController
@RequestMapping(value = "/test")
public class TestController {
    @Reference(async = true)
    private UserService userService;

    @GetMapping("/testStr")
    public String testStr(String param){
        return userService.testEcho(param);
    }
}

 @GetMapping("/futureGet")
    public String futureGet(String param) throws ExecutionException, InterruptedException {
        userService.testEcho(param);
        Future<String> future= RpcContext.getContext().getFuture();
        String result = future.get();
        System.out.println("this is :"+result);
        return result;
    }

/**
 * @author idea
 * @date 2019/12/31
 * @Version V1.0
 */
public interface DemoService {
      String sayHello(String name) ;
      default CompletableFuture<String> sayAsyncHello(String name){
            return CompletableFuture.completedFuture(sayHello(name));
      }
}

package com.sise.consumer.controller;

import com.sise.dubbo.service.DemoService;
import org.apache.dubbo.config.annotation.Reference;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.atomic.AtomicReference;
/**
 * @author idea
 * @date 2019/12/31
 * @Version V1.0
 */
@RestController
@RequestMapping(value = "/demo")
public class DemoController {

    @Reference
    private DemoService demoService;

    @RequestMapping(value = "/testDemo")
    public String testDemo(String name){
        System.out.println("【testDemo】 this is :"+name);
        return demoService.sayHello(name);
    }.

    @RequestMapping(value = "/testAsyncDemo")
    public String testAsyncDemo(String name){
        System.out.println("【testAsyncDemo】 this is :"+name);
        CompletableFuture<String> future = demoService.sayAsyncHello(name);
        AtomicReference<String> result = null;
        //通过一条callback线程来处理响应的数据信息
        future.whenComplete((retValue,exception)->{
           if(exception==null){
               System.out.println(retValue);
               result.set(retValue);
           } else {
               exception.printStackTrace();
           }
        });
        return "通过一条callback线程来处理响应的数据信息,所以这个时候获取不到信息响应";
    }
}

<dubbo:registry address=“zookeeper://127.0.0.1:2181” simplified="true"/>

dubbo://30.5.120.185:20880/com.sise.TestService?
application=test-provider&
dubbo=2.0.2&
release=2.7.0&
timestamp=1554982201973