安装Zookeeper

下载地址：https://zookeeper.apache.org/releases.html#download
解压，然后运行bin目录里的zkService.cmd
将conf文件夹的zoo_sample.cfg复制一份改名为zoo.cfg
修改zoo.cfg配置，dataDir临时数据存储的位置，clientPort为运行的端口号，修改完运行。

测试

运行zkCli.sh
ls /：列出根目录所有节点
create -e /xin 222:创建一个名称为xin的节点，值为222
get /xin：获取节点名称为xin的值

安装dubbo-admin

创建项目

创建公共模块api

服务提供者和消费者都有导入这个公共模块

pom文件依赖

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.apache.dubbo</groupId>
            <artifactId>dubbo-spring-boot-starter</artifactId>
            <version>2.7.3</version>
        </dependency>
        <dependency>
            <groupId>org.apache.curator</groupId>
            <artifactId>curator-framework</artifactId>
            <version>4.0.1</version>
        </dependency>
        <dependency>
            <groupId>org.apache.curator</groupId>
            <artifactId>curator-recipes</artifactId>
            <version>4.0.1</version>
        </dependency>
        <dependency>
            <groupId>com.github.sgroschupf</groupId>
            <artifactId>zkclient</artifactId>
            <version>0.1</version>
        </dependency>
        <dependency>
            <groupId>org.apache.zookeeper</groupId>
            <artifactId>zookeeper</artifactId>
            <version>3.6.0</version>
            <exclusions>
                <exclusion>
                    <groupId>org.slf4j</groupId>
                    <artifactId>slf4j-log4j12</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
    </dependencies>

在api模块中新增interface接口，OrderService，并创建一个方法。

public interface OrderService {
    String createOrder(String name);
}

创建zookeeper服务

yml配置文件

server:
  port: 9091
  servlet:
    context-path: /api

dubbo:
  application:
    name: provider-name
  config-center:
    timeout: 10000
  registry:
    address: zookeeper://192.168.174.128:2181
    protocol: zookeeper
  scan:
    base-packages: fun.xinnix.service

在启动类上加上 @EnableDubbo 注解
创建OrderService的实现类，并实现OrderService，其中 @Service 是dubbo的注解

package fun.xinnix.service.impl;

import fun.xinnix.service.OrderService;
import org.apache.dubbo.config.annotation.Service;
import org.springframework.stereotype.Component;

@Service(interfaceClass = OrderService.class)
@Component
public class OrderServiceImpl implements OrderService {
    @Override
    public String createOrder(String name) {
        return "order:" + name;
    }
}

创建dubbo服务

yml配置

server:
  port: 9092
  servlet:
    context-path: /api

dubbo:
  application:
    name: consumer-server
  registry:
    address: zookeeper://192.168.174.128:2181
    protocol: zookeeper

在启动类加上注解 @EnableDubboConfig
编写controller

@RestController
@RequestMapping("/consumer")
public class ConsumerController {
    @Resource
    ConsumerService consumerService;

    @PostMapping("/createOrder")
    public Result createOrder(String username) {
        return Result.success(consumerService.createOrderByUser(username));
    }
}

编写ConsumerService

public interface ConsumerService {
    String createOrderByUser(String username);
}

编写ConsumerService实现类，ConsumerServiceImpl

package fun.xinnix.service.impl;

import fun.xinnix.service.ConsumerService;
import fun.xinnix.service.OrderService;
import org.apache.dubbo.config.annotation.Reference;
import org.springframework.stereotype.Service;
// spirng注解
@Service
public class ConsumerServiceImpl implements ConsumerService {
	// dubbo注解
    @Reference
    OrderService orderService;

    @Override
    public String createOrderByUser(String username) {
        return orderService.createOrder(username);
    }
}