独立启动不依赖spring
依赖注册中心 或  直接连接
方便 debug ，跟踪源码 理解原理


ClientMain



ApplicationConfig application = new ApplicationConfig();
application.setName("dubbo-client-main");
        
RegistryConfig registryConfig = new RegistryConfig();
registryConfig.setProtocol("zookeeper");
registryConfig.setAddress("127.0.0.1:2181");
registryConfig.setClient("zkclient");
        
ReferenceConfig<HelloService> referenceConfig = new ReferenceConfig<>();
referenceConfig.setApplication(application);
referenceConfig.setRegistry(registryConfig);
// random  roundrobin leastactive 
referenceConfig.setLoadbalance(RandomLoadBalance.NAME);
referenceConfig.setInterface(HelloService.class);
referenceConfig.setVersion("1.0.0");
referenceConfig.setGroup("group1");
        
HelloService helloService = referenceConfig.get();
String result = helloService.hello("dyyx");
System.out.println(result);

 
ClientMain2 
直接连接 不依赖注册中心

ApplicationConfig application = new ApplicationConfig();
application.setName("dubbo-client-main");
        
ReferenceConfig<HelloService> referenceConfig = new ReferenceConfig<>();
referenceConfig.setApplication(application);
referenceConfig.setInterface(HelloService.class);
referenceConfig.setUrl("dubbo://127.0.0.1:20880");
referenceConfig.setVersion("1.0.0");
referenceConfig.setGroup("group1");
        
HelloService helloService = referenceConfig.get();
String result = helloService.hello("dyyx");
System.out.println(result);
       
    



完整代码
https://gitee.com/dyyx/dubbodemo/blob/master/dubbo-hello-consumer/src/main/java/dyyx/ClientMain.java
https://gitee.com/dyyx/dubbodemo/blob/master/dubbo-hello-consumer/src/main/java/dyyx/ClientMain2.java