SpringCloud整合Zookeeper代替Eureka

一.前言

现在的Eureka已经停更了，当然可以使用，也可以使用其他的代替Eureka，比如Zookeeper、Consul、还有SpringCloud Alibaba 的Nacos都可以作为服务的注册中心，本文就是记录一下SpringCloud整合Zookeeper的详细步骤

二.SpringCloud整合Zookeeper

1.Docker部署Zookeeper

• 下载zookeeper镜像

docker pull zookeeper

• 查看镜像

docker images

• 运行zookeeper镜像

docker run --name zk01 --restart always -d -p 2181:2181 镜像id

• 进入zookeeper容器

docker exec -it c92d46f793af /bin/bash

• 进入zkCli.sh

cd bin/
./zkCli.sh

可以看到当前没有其他服务

2.服务注册进Zookeeper

• 创建支付服务 cloud-provider-payment8004

pom.xml：

    <dependencies>
        
        <dependency>
            <groupId>org.springframework.bootgroupId>
            <artifactId>spring-boot-starter-webartifactId>
        dependency>
        <dependency>
        
            <groupId>com.baidugroupId>
            <artifactId>cloud-api-commonsartifactId>
            <version>${project.version}version>
        dependency>
        
        <dependency>
            <groupId>org.springframework.cloudgroupId>
            <artifactId>spring-cloud-starter-zookeeper-discoveryartifactId>
        dependency>
        <dependency>
            <groupId>org.springframework.bootgroupId>
            <artifactId>spring-boot-devtoolsartifactId>
            <scope>runtimescope>
            <optional>trueoptional>
        dependency>
        <dependency>
            <groupId>org.projectlombokgroupId>
            <artifactId>lombokartifactId>
            <optional>trueoptional>
        dependency>
        <dependency>
            <groupId>org.springframework.bootgroupId>
            <artifactId>spring-boot-starter-testartifactId>
            <scope>testscope>
        dependency>
    dependencies>

application.yml：

#8004表示注册到zookeeper服务器的支付服务提供者端口号
server:
  port: 8004

#服务别名----注册zookeeper到注册中心名称
spring:
  application:
    name: cloud-provider-payment
  cloud:
    zookeeper:
      connect-string: 192.168.85.130:2181

controller：

@RestController
@Slf4j
public class PaymentController {

    @Value("${server.port}")
    private String serverPort;

    @RequestMapping("/payment/zk")
    public String paymentZk(){

        return "springCloud with zookeeper:"+serverPort+"\t"+ UUID.randomUUID().toString();
    }
}

主启动类：

@SpringBootApplication
@EnableDiscoveryClient
public class PaymentMain8004 {
     public static void main(String[] args) {
           SpringApplication.run(PaymentMain8004.class, args);
      }
}

• 创建订单服务cloud-consumerzk-order80
  pom.xml：

 <dependencies>
        
        <dependency>
            <groupId>org.springframework.bootgroupId>
            <artifactId>spring-boot-starter-webartifactId>
        dependency>
        <dependency>
        
            <groupId>com.baidugroupId>
            <artifactId>cloud-api-commonsartifactId>
            <version>${project.version}version>
        dependency>
        
        <dependency>
            <groupId>org.springframework.cloudgroupId>
            <artifactId>spring-cloud-starter-zookeeper-discoveryartifactId>
        dependency>
        <dependency>
            <groupId>org.springframework.bootgroupId>
            <artifactId>spring-boot-devtoolsartifactId>
            <scope>runtimescope>
            <optional>trueoptional>
        dependency>
        <dependency>
            <groupId>org.projectlombokgroupId>
            <artifactId>lombokartifactId>
            <optional>trueoptional>
        dependency>
        <dependency>
            <groupId>org.springframework.bootgroupId>
            <artifactId>spring-boot-starter-testartifactId>
            <scope>testscope>
        dependency>
    dependencies>

application.yml：

server:
  port: 80
#服务别名----注册zookeeper到注册中心名称
spring:
  application:
    name: cloud-consumerzk-order
  cloud:
    zookeeper:
      connect-string: 192.168.85.130:2181

config/ApplicationContextConfig：配置RestTemplate

@Configuration
public class ApplicationContextConfig {
    @LoadBalanced
    @Bean
    public RestTemplate getRestTemplate(){
        return new RestTemplate();
    }
}

controller：

@RestController
@Slf4j
public class OrderZkController {

    public static final String INVOKE_URL = "http://cloud-provider-payment";

    @Autowired
    private RestTemplate restTemplate;

    @GetMapping("/consumer/payment/zk")
    public String paymentInfo(){
        String result = restTemplate.getForObject(INVOKE_URL+"/payment/zk",String.class);
        return result;
    }
}

主启动类：

@SpringBootApplication
@EnableDiscoveryClient
public class OrderZkMain80 {
     public static void main(String[] args) {
           SpringApplication.run(OrderZkMain80.class, args);
      }
}

3.启动测试调用服务

再次查看zookeeper，两个服务已经注册进zookeeper了！


订单服务调用支付服务也成功了！