SpringBoot 部署Dubbo3.0相关2021版本

部署2021年dubbo3.0相关的版本

SpringBoot 2.4.3安装 zookeeper-3.7.0 单机引入依赖 dubbo-spring-boot-starter 3.0.4、org.apache.curator 5.2.0

Curator 框架提供了一套高级的 API，简化了 ZooKeeper 的操作。它增加了很多使用 ZooKeeper 开发的特性，可以处理 ZooKeeper 集群复杂的连接管理和重试机制。

下载地址
https://dlcdn.apache.org/zookeeper/zookeeper-3.7.0/apache-zookeeper-3.7.0-bin.tar.gz
安装教程
https://dubbo.apache.org/zh/docs/v2.7/admin/install/zookeeper/

SpringBoot 2.4.3，项目名称 micro-dunno
业务提供者没有controller层，消费者只有controller对外暴露服务
pom.xml

    4.0.0

    org.example.dubbo
    micro-dubbo
    pom
    1.0-SNAPSHOT
    
        common
        consumer
        provider
    

    
        org.springframework.boot
        spring-boot-starter-parent
        2.4.3
    

    
        UTF-8
        UTF-8
        1.8
        1.8
        1.8
    

    
        
            org.springframework.boot
            spring-boot-starter
        
        
            com.alibaba
            fastjson
            1.2.75
        
    

公共 api

package org.example.dubbo.common;
public interface UserService {
    public String getUserInfo();
}

pom.xml

    
        micro-dubbo
        org.example.dubbo
        1.0-SNAPSHOT
    
    4.0.0

    org.example.dubbo.common
    common

引入依赖 pom.xml

    
        micro-dubbo
        org.example.dubbo
        1.0-SNAPSHOT
    
    4.0.0

    org.example.dubbo.server
    provider

    
        
        
            org.example.dubbo.common
            common
            1.0-SNAPSHOT
            compile
        
        
        
            org.springframework.boot
            spring-boot-starter-web
        
        
        
            org.apache.dubbo
            dubbo-spring-boot-starter
            3.0.4
        
        
        
        
            org.apache.curator
            curator-x-discovery
            5.2.0
        
        










    
    
        
            
                org.springframework.boot
                spring-boot-maven-plugin
            
        
    

ProviderApplication.java

package org.example.dubbo.server;
import org.apache.dubbo.config.spring.context.annotation.EnableDubbo;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@EnableDubbo
@SpringBootApplication
public class ProviderApplication {
    public static void main(String[] args) {
        SpringApplication.run(ProviderApplication.class, args);
        System.out.println("-----run ok-----");
    }
}

实现接口业务 UserServiceImpl.java

package org.example.dubbo.server;
import org.example.dubbo.common.UserService;
import org.apache.dubbo.config.annotation.DubboService;

@DubboService(interfaceClass = UserService.class)
public class UserServiceImpl implements UserService {
    @Override
    public String getUserInfo(){
        return "小明";
    }
}

application.yml

server:
  port: 5801

logging:
  level:
    root: INFO
  file:
    name: ./dubbo-provider.log

dubbo:
  application:
    name: dubbo-provider #当前服务/应用的名字
  registry: ##注册中心的协议和地址
    address: zookeeper://127.0.0.1:2181
  protocol:   ##通信规则（通信协议和接口）
    name: dubbo
    port: 20880

pom.xml

    
        micro-dubbo
        org.example.dubbo
        1.0-SNAPSHOT
    
    4.0.0

    org.example.dubbo.consumer
    consumer

    
        
        
            org.example.dubbo.common
            common
            1.0-SNAPSHOT
            compile
        

        
            org.springframework.boot
            spring-boot-starter-web
        
        
        
            org.apache.dubbo
            dubbo-spring-boot-starter
            3.0.4
        
        
        
            org.apache.curator
            curator-x-discovery
            5.2.0
        
    
    
        
            
                org.springframework.boot
                spring-boot-maven-plugin
            
        
    

启动类 ConsumerApplication.java

package org.example.dubbo.consumer;
import org.apache.dubbo.config.spring.context.annotation.EnableDubbo;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@EnableDubbo
@SpringBootApplication
public class ConsumerApplication {
    public static void main(String[] args) {
        SpringApplication.run(ConsumerApplication.class, args);
    }}

Dubbo客户端 DubboApiClient.java

package org.example.dubbo.consumer;
import org.apache.dubbo.config.annotation.DubboReference;
import org.example.dubbo.common.UserService;
import org.springframework.stereotype.Component;

@Component
public class DubboApiClient {
    @DubboReference(check = false)
    private UserService userService;

    public String getUserInfo(){
        return userService.getUserInfo();
    }
}

UserController.java

package org.example.dubbo.consumer;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class UserController {
    @Autowired
    private DubboApiClient dubboApiClient;

    @RequestMapping("/getUser")
    public String getUser(){
        return dubboApiClient.getUserInfo();
    }
}

配置文件 application.yml

server:
  port: 5805

logging:
  level:
    root: INFO
  file:
    name: ./dubbo-consumer.log

dubbo:
  application:
    name: dubbo-provider #当前服务/应用的名字
  registry: #注册中心的协议和地址
    address: zookeeper://127.0.0.1:2181
  protocol: #通信规则（通信协议和接口）
    name: dubbo
    port: 20880
#  consumer:
#    check: false # 关闭所有服务的启动时检查：(默认没有提供者时报错) 写在定义服务消费者一方
#    retries: 3 #失败重试次数

项目结构图

访问consumer 服务提供者的，输入访问地址 http://120.78.12.26:5805/getUser 后，返回远程接口提供者provider的具体业务实现结果。

完

https://blog.csdn.net/instanceof_zjl/article/details/122014926
https://blog.csdn.net/smartbetter/article/details/53083816

其他

SpringBoot中使用RMI进行远程方法调用
https://www.cnblogs.com/shamo89/p/10631320.html