3.服务注册中心之Zookeeper

矫情吗；* 2022-11-30 04:03 118阅读 0赞

### **SpringCloud系列文章列表** ###

[0. SpringCloud实战专栏介绍准备][0. SpringCloud]  
[1. SpringCloud父工程搭建][1. SpringCloud]  
[2. 服务注册中心之Eureka（单机＋集群+Ribbon调用）][2. _Eureka_Ribbon]  
[3. 服务注册中心之Zookeeper][3. _Zookeeper]  
[4. 服务注册中心之Consul][4. _Consul]  
[5. eureka、zookeeper和consul三种注册中心之间的区别][5. eureka_zookeeper_consul]  
[6. 负载均衡服务调用之Ribbon][6. _Ribbon]  
[7. 服务调用之OpenFeign][7. _OpenFeign]  
[8. Hystrix断路器全面实战总结][8. Hystrix]  
[9. SpringCloud Gateway网关][9. SpringCloud Gateway]  
[10. SpringCloud Config配置中心][10. SpringCloud Config]  
[11. SpringCloud Bus消息总线][11. SpringCloud Bus]  
[12. SpringCloud Stream消息驱动][12. SpringCloud Stream]  
[13. SpringCloud Sleuth分布式请求链路追踪][13. SpringCloud Sleuth]

### 目录 ###

*   *   *  \*\*SpringCloud系列文章列表\*\*
         *  安装Zookeeper
         *  项目构建
         *   *  搭建服务提供者
             *  搭建消费者

### 安装Zookeeper ###

1、普通安装可以参考之前的一篇文章 https://blog.csdn.net/shuai8624/article/details/96208766

本次采用下面的docker安装  
2、docker安装

#下载镜像并启动
    docker run --name some-zookeeper -d zookeeper:3.6
    #连接zookeeper
    docker exec -it 容器id zkCli.sh

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3NodWFpODYyNA_size_16_color_FFFFFF_t_70_pic_center]  
如上图可以看到当前就一个/zookeeper节点；

### 项目构建 ###

服务提供者为 cloud-provider-zookeeper8004  
消费者为 cloud-consumerzk-order80

*  #### 搭建服务提供者 ####

新建子工程，工程名为cloud-provider-zookeeper8004  
pom.xml

<?xml version="1.0" encoding="UTF-8"?>
    <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
        <parent>
            <artifactId>SpringCloudDemo</artifactId>
            <groupId>com.chouxiaozi</groupId>
            <version>1.0-SNAPSHOT</version>
        </parent>
        <modelVersion>4.0.0</modelVersion>
    
        <artifactId>cloud-provider-zookeeper8004</artifactId>
    
        <dependencies>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-web</artifactId>
            </dependency>
    
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-actuator</artifactId>
            </dependency>
            
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-starter-zookeeper-discovery</artifactId>
            </dependency>
        </dependencies>
    </project>

application.yml

server:
      port: 8004
    
    spring:
      application:
        name: provider-zookeeper
      cloud:
        zookeeper:
          connect-string: 106.54.142.196:2181

注释：如果zookeeper是集群的话；之间逗号隔开

启动类

@SpringBootApplication
    @EnableDiscoveryClient
    public class ProviderZookeeperMain8004 { 
        public static void main(String[] args) { 
            SpringApplication.run(ProviderZookeeperMain8004.class, args);
        }
    }

写个web接口便于测试

@RestController
    public class PaymentController { 
        @Value("${server.port}")
        private Integer serverPort;
    
        @GetMapping("/payment/zk")
        public String paymentZk(){ 
            return "springcloud with zookeeper: "+serverPort+"\t"+ UUID.randomUUID().toString();
        }
    }

启动项目,测试接口没问题  
![在这里插入图片描述][20200822235735638.png_pic_center]  
查看zookeeper节点如下；服务注册成功；  
![在这里插入图片描述][20200822235909440.png_pic_center]

--------------------

*  #### 搭建消费者 ####

新建子工程，cloud-consumerzk-order80；  
pom.xml（跟服务提供者一样）

<?xml version="1.0" encoding="UTF-8"?>
    <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
        <parent>
            <artifactId>SpringCloudDemo</artifactId>
            <groupId>com.chouxiaozi</groupId>
            <version>1.0-SNAPSHOT</version>
        </parent>
        <modelVersion>4.0.0</modelVersion>
    
        <artifactId>cloud-consumerzk-order80</artifactId>
        <dependencies>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-web</artifactId>
            </dependency>
    
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-actuator</artifactId>
            </dependency>
    
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-starter-zookeeper-discovery</artifactId>
            </dependency>
    
        </dependencies>
    
    </project>

application.yml

server:
      port: 80
    
    spring:
      application:
        name: consumerzk-order80
      cloud:
        zookeeper:
          connect-string: 106.54.142.196:2181

启动类

@SpringBootApplication
    @EnableDiscoveryClient
    public class ConsumerZkOrderMain80 { 
    
        public static void main(String[] args) { 
            SpringApplication.run(ConsumerZkOrderMain80.class, args);
        }
    }

RestTemplate配置类

@Configuration
    public class RestTemplateConfig { 
    
        @Bean
        @LoadBalanced
        RestTemplate restTemplate(){ 
            return new RestTemplate();
        }
    }

写个web接口便于测试

@RestController
    public class ConsumerOrderController { 
        private final String paymentUrl = "http://provider-zookeeper";
    
        @Autowired
        RestTemplate restTemplate;
    
        @GetMapping("/consumer/payment/zk")
        public String order(){ 
            return restTemplate.getForObject(paymentUrl+"/payment/zk",String.class);
        }
    }

启动消费者;查看zookeeper如下图，消费者注册成功

![在这里插入图片描述][20200823000457142.png_pic_center]  
接口测试

![在这里插入图片描述][20200823000547875.png_pic_center]  
如图调用成功；

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[0. SpringCloud]: https://blog.csdn.net/shuai8624/article/details/108027323
[1. SpringCloud]: https://blog.csdn.net/shuai8624/article/details/108089864
[2. _Eureka_Ribbon]: https://blog.csdn.net/shuai8624/article/details/108111529
[3. _Zookeeper]: https://blog.csdn.net/shuai8624/article/details/108177121
[4. _Consul]: https://blog.csdn.net/shuai8624/article/details/109085205
[5. eureka_zookeeper_consul]: https://blog.csdn.net/shuai8624/article/details/109267643
[6. _Ribbon]: https://blog.csdn.net/shuai8624/article/details/109274118
[7. _OpenFeign]: https://blog.csdn.net/shuai8624/article/details/109275543
[8. Hystrix]: https://blog.csdn.net/shuai8624/article/details/109557105
[9. SpringCloud Gateway]: https://blog.csdn.net/shuai8624/article/details/109587848
[10. SpringCloud Config]: https://blog.csdn.net/shuai8624/article/details/109749674
[11. SpringCloud Bus]: https://blog.csdn.net/shuai8624/article/details/109871700
[12. SpringCloud Stream]: https://blog.csdn.net/shuai8624/article/details/110735489
[13. SpringCloud Sleuth]: https://blog.csdn.net/shuai8624/article/details/110748777
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[20200822235735638.png_pic_center]: /images/20221124/876ed8c754ee44c3a78aece1d8a12687.png
[20200822235909440.png_pic_center]: /images/20221124/29131d4c2dd64289a7c2c3bc1c7ec11f.png
[20200823000457142.png_pic_center]: /images/20221124/f15660832bb1495db5d6056736224e66.png
[20200823000547875.png_pic_center]: /images/20221124/e24e6afd91434f55ad7b636fd1485456.png