dubbo入门示例（一）

目录

一、Dubbo入门示例（一）

二、项目结构

 2.1 Maven项目

2.1.1 dubbo-common

2.1.2 dubbo-service

2.1.3 dubbo-client

三、项目启动

3.1 启动服务端

3.2 启动客户端

---

一、Dubbo入门示例（一）

此示例适合了解dubbo项目，不适合在真正的项目中使用

二、项目结构

 2.1 Maven项目

• dubbo-common 公共组件
• dubbo-client 客户端
• dubbo-server 服务端

2.1.1 dubbo-common

pom文件

	<dependencies>
		<dependency>
			<groupId>com.alibaba</groupId>
			<artifactId>dubbo</artifactId>
			<version>2.6.2</version>
		</dependency>
	</dependencies>

代码

User.java

import java.io.Serializable;

public class User implements Serializable{

	private static final long serialVersionUID = 1L;
	private Integer id;
	private String name;
	public Integer getId() {
		return id;
	}
	public void setId(Integer id) {
		this.id = id;
	}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	@Override
	public String toString() {
		return "User [id=" + id + ", name=" + name + "]";
	}
	
}

UserService.java

import com.core.common.entity.User;

public interface UserService {
	public User getUser();
}

2.1.2 dubbo-service

pom

		<dependency>
			<groupId>com.core</groupId>
			<artifactId>dubbo-common</artifactId>
			<version>0.0.1-SNAPSHOT</version>
		</dependency>

UserserviceImpl.java

import com.core.common.entity.User;
import com.core.common.service.UserService;

public class UserServiceImpl implements UserService{

	@Override
	public User getUser() {
		User user = new User();
		user.setId(1);
		user.setName("zhangsan");
		return user;
	}
}

SimpleServer.java

import com.alibaba.dubbo.config.ApplicationConfig;
import com.alibaba.dubbo.config.ProtocolConfig;
import com.alibaba.dubbo.config.RegistryConfig;
import com.alibaba.dubbo.config.ServiceConfig;
import com.core.common.service.UserService;
import com.core.service.UserServiceImpl;

public class SimpleServer {

	public void openServer(int port){
		// 服务配置
		ServiceConfig<UserService> serviceConfig = new ServiceConfig<UserService>();
		// 设置服务接口
		serviceConfig.setInterface(UserService.class);
		// 设置开放的协议
		serviceConfig.setProtocol(new ProtocolConfig("dubbo",20880));
		// 设置一个空的注册中心
		serviceConfig.setRegistry(new RegistryConfig(RegistryConfig.NO_AVAILABLE));
		// 设置服务当前所在的应用
		serviceConfig.setApplication(new ApplicationConfig("simpl-server"));
		// 设置服务实现对象
		serviceConfig.setRef(new UserServiceImpl());
		// 暴露服务
		serviceConfig.export();
		
		System.out.println("服务已经开启："+port);
		
	}
	
	public static void main(String[] args) throws Exception {
		new SimpleServer().openServer(20880);
		System.in.read();
	}
}

2.1.3 dubbo-client

pom 

		<dependency>
			<groupId>com.core</groupId>
			<artifactId>dubbo-common</artifactId>
			<version>0.0.1-SNAPSHOT</version>
		</dependency>

SimpleClient.java

import com.alibaba.dubbo.config.ApplicationConfig;
import com.alibaba.dubbo.config.ReferenceConfig;
import com.core.common.entity.User;
import com.core.common.service.UserService;

public class SimpleClient {

	/**
	 * 基于URL构建远程服务
	 * @param remoteUrl
	 * @return
	 */
	public UserService buildRemoteService(String remoteUrl){
		
		ReferenceConfig<UserService> referenceConfig = new ReferenceConfig<UserService>();
		// 设置服务接口
		referenceConfig.setInterface(UserService.class);
		// 设置URL
		referenceConfig.setUrl(remoteUrl);
		// 设置服务名称
		referenceConfig.setApplication(new ApplicationConfig("simple-client"));
		
		return referenceConfig.get();
	}
	
	public static void main(String[] args) {
		SimpleClient yangClient = new SimpleClient();
		UserService userService = yangClient.buildRemoteService("dubbo://127.0.0.1:20880/com.core.common.service.UserService");
		User user = userService.getUser();
		System.out.println(user);
	}
}

三、项目启动

3.1 启动服务端

控制台输出：服务已经开启：20880

3.2 启动客户端

成功调用