SpringCloud第四節內容精簡，zookeeper註冊與發現

首先在linux安裝zookeeper，我是在docker裏裝的，可以參考下面的教程

https://blog.csdn.net/bailaoshi666/article/details/107033477

 

然後新建模塊 

pom。提供者和消費者都是這個依賴。其中要說的就是zookeeper的jar包衝突。

<dependencies>
        <!-- SpringBoot整合Web組件 -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency><!-- 引入自己定義的api通用包，可以使用Payment支付Entity -->
            <groupId>com.atguigu.springcloud</groupId>
            <artifactId>cloud-api-commons</artifactId>
            <version>${project.version}</version>
        </dependency>
        <!-- SpringBoot整合zookeeper客戶端 -->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-zookeeper-discovery</artifactId>
            <!--先排除自帶的zookeeper3.5.3-->
            <exclusions>
                <exclusion>
                    <groupId>org.apache.zookeeper</groupId>
                    <artifactId>zookeeper</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
        <!--添加zookeeper3.4.9版本-->
        <dependency>
            <groupId>org.apache.zookeeper</groupId>
            <artifactId>zookeeper</artifactId>
            <version>3.4.9</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <scope>runtime</scope>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>

application.yml

server:
  port: 8004

#服務別名----註冊zookeeper到註冊中心名稱
spring:
  application:
    name: cloud-provider-payment
  cloud:
    zookeeper:
      connect-string: 192.168.184.128:2181

最後是控制器

@RestController
@Slf4j
public class PaymentController {
    @Value("${server.port}")
    private String serverPort;

    @RequestMapping(value = "/payment/zk")
    public String paymentzk()
    {
        return "springcloud with zookeeper: "+serverPort+"\t"+ UUID.randomUUID().toString();
    }
}

啓動類主要是兩個註解

@SpringBootApplication
@EnableDiscoveryClient
public class OrderZKMain80 {
    public static void main(String[] args) {
        SpringApplication.run(OrderZKMain80.class,args);
    }
}

 

效果

 

然後寫消費者

pom如上

application.yml修改名字端口

server:
  port: 80

#服務別名----註冊zookeeper到註冊中心名稱
spring:
  application:
    name: cloud-consumer-order
  cloud:
    zookeeper:
      connect-string: 192.168.184.128:2181

 

還沒學到rabbon，所以還是用 RestTemplate

寫個配置類

@Configuration
public class ApplicationContextConfig {

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

然後是控制器

@RestController
@Slf4j
public class OrderZKController {
    public static final String INVOKE_URL = "http://cloud-provider-payment";

    @Resource
    private RestTemplate restTemplate;

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

啓動類如上，自己修改即可

效果

 

這裏的節點是臨時節點，如果沒有心跳反應，就會即時刪除節點。