SpringCloud整合Zookeeper代替Eureka

Linux系统如何安装zookeeper看http://t.csdn.cn/xDWRk

1. 注册中心Zookeeper

1.1 zookeeper是一个分布式协调工具，可以实现注册中心功能
1.2 关闭Linux服务器防火墙后启动zookeeper服务器
systemctl stop firewalld

1.3 zookeeper服务器取代Eureka服务器，zk作为服务注册中心

2. 服务提供者

2.1 新建cloud-provider-payment8004
2.2 修改POM

<dependencies>
        <!--SpringBoot整合Web组件-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <!--引入自己定义的api通用包，可以使用Payment支付Entity-->
        <dependency>
            <groupId>com.zhang.springcloud</groupId>
            <artifactId>cloud-api-commons</artifactId>
            <version>${project.version}</version>
        </dependency>
        <!--SpringBoot整合zookeeper客户端-->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-zookeeper-discovery</artifactId>
            <!--先排除自带的zookeeper3.5.3-->
            <exclusions>
                <exclusion>
                    <groupId>org.apache.zookeeper</groupId>
                    <artifactId>zookeeper</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
        <!--添加zookeeper3.7.1版本-->
        <dependency>
            <groupId>org.apache.zookeeper</groupId>
            <artifactId>zookeeper</artifactId>
            <version>3.7.1</version>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>

    </dependencies>

2.3创建application.yml文件

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

  #服务别名------注册zookeeper到注册中心名称
spring:
  application:
    name: cloud-provider-payment
  cloud:
    zookeeper:
      connect-string: xxxxxx:2181.    #xxxxxx是linux系统的ip

2.4主启动类：

@SpringBootApplication
@EnableDiscoveryClient//该注解用于向使用consul或zookeeper作为注册中心时注册服务
public class Payment8004 {
    public static void main(String[] args) {
        SpringApplication.run(Payment8004.class,args);
    }
}

2.5. conreoller:

@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();
    }
}

2.6启动8004注册进zookeeper

注意：

服务节点是临时节点！！！！！

3. 服务消费者

3.1新建cloud-consumerzk-order80
3.2 修改POM文件

<dependencies>
        <!--SpringBoot整合Web组件-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-web  -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>


        <!--引入自己定义的api通用包，可以使用Payment支付Entity-->
        <dependency>
            <groupId>com.zhang.springcloud</groupId>
            <artifactId>cloud-api-commons</artifactId>
            <version>${project.version}</version>
        </dependency>
        <!--SpringBoot整合zookeeper客户端-->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-zookeeper-discovery</artifactId>
            <!--先排除自带的zookeeper3.5.3-->
            <exclusions>
                <exclusion>
                    <groupId>org.apache.zookeeper</groupId>
                    <artifactId>zookeeper</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
        <!--添加zookeeper3.7.1版本-->
        <dependency>
            <groupId>org.apache.zookeeper</groupId>
            <artifactId>zookeeper</artifactId>
            <version>3.7.1</version>
            <exclusions>
                <exclusion>
                    <groupId>org.slf4j</groupId>
                    <artifactId>slf4j-log4j12</artifactId>
                </exclusion>
            </exclusions>
        </dependency>

        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>

        <!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-test -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>


    </dependencies>

3.3创建application.yml文件

server:
  port: 80
spring:
  application:
    name: cloud-consumer-order
  cloud:
    zookeeper:
      connect-string: ip地址:2181

3.4 主启动

@SpringBootApplication
@EnableDiscoveryClient
public class OrderAKMain80 {
    public static void main(String[] args) {
        SpringApplication.run(OrderAKMain80.class,args);
    }
}

3.5 业务类

配置类

@Configuration
public class ApplicationContextConfig {

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

controller

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

    @Resource
    private RestTemplate restTemplate;

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