Zookeeper代替Eureka入门
2022年6月15日
Zookeeper代替Eureka入门
简介
- ZooKeeper是一个分布式的，开放源码的分布式应用程协调服务，是Google的Chubby一个开源的实现，是Hadoop和Hbase的重要组件。它是一个为分布式应用提供一致性服务的软件，提供的功能包括：配置维护、域名服务、分布式同步、组服务等。
- zookeeper是一个分布式协调工具，可以实现注册中心功能
- zookeeper服务器取代Eureka服务器，zk作为服务注册中心
构建服务提供者
新建cloud-provider-payment8004
pom
<?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>tudou_cloud</artifactId>
<groupId>org.example</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>cloud-provider-payment8004</artifactId>
<dependencies>
<!-- SpringBoot整合Web组件 -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency><!-- 引入自己定义的api通用包，可以使用Payment支付Entity -->
<groupId>org.example</groupId>
<artifactId>cloud-api-commons</artifactId>
<version>${project.version}</version>
</dependency>
<!-- SpringBoot整合zookeeper客户端 -->
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-zookeeper-discovery</artifactId>
<!--先排除自带的zookeeper3.5.3-->
<exclusions>
<exclusion>
<groupId>org.apache.zookeeper</groupId>
<artifactId>zookeeper</artifactId>
</exclusion>
</exclusions>
</dependency>
<!--添加zookeeper3.4.9版本-->
<dependency>
<groupId>org.apache.zookeeper</groupId>
<artifactId>zookeeper</artifactId>
<version>3.4.9</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>runtime</scope>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
</project>
yml
#8004表示注册到zookeeper服务器的支付服务提供者端口号
server:
port: 8004
#服务别名----注册zookeeper到注册中心名称
spring:
application:
name: cloud-provider-payment
cloud:
zookeeper:
connect-string: localhost:2181
主启动类
/**
* @Author LR
* @Date 2022/6/14 21:49
*/
@SpringBootApplication
@EnableDiscoveryClient //该注解用于向使用consul或者zookeeper作为注册中心时注册服务
public class PaymentMain8004 {
public static void main(String[] args) {
SpringApplication.run(PaymentMain8004.class, args);
}
}
controller
/**
* @Author LR
* @Date 2022/6/14 21:50
*/
@RestController
public class PaymentController {
@Value("${server.port}")
private String serverPort;
@RequestMapping(value = "/payment/zk")
public String paymentzk() {
return "springcloud with zookeeper: " + serverPort + "\t" + UUID.randomUUID().toString();
}
}
验证测试
验证测试2
[zk: zookeeper(CONNECTED) 7] ls /services/cloud-provider-payment
[9d1a4c06-b125-42bf-a674-0a97e5f0170b]
[zk: zookeeper(CONNECTED) 8] get /services/cloud-provider-payment/9d1a4c06-b125-42bf-a674-0a97e5f0170b
{"name":"cloud-provider-payment","id":"9d1a4c06-b125-42bf-a674-0a97e5f0170b","address":"localhost","port":8004,"sslPort":null,"payload":{"@class":"org.springframework.cloud.zookeeper.discovery.ZookeeperInstance","id":"application-1","name":"cloud-provider-payment","metadata":{}},"registrationTimeUTC":1655214814152,"serviceType":"DYNAMIC","uriSpec":{"parts":[{"value":"scheme","variable":true},{"value":"://","variable":false},{"value":"address","variable":true},{"value":":","variable":false},{"value":"port","variable":true}]}}
cZxid = 0xa
ctime = Tue Jun 14 13:53:35 GMT 2022
mZxid = 0xa
mtime = Tue Jun 14 13:53:35 GMT 2022
pZxid = 0xa
cversion = 0
dataVersion = 0
aclVersion = 0
ephemeralOwner = 0x1816274fe8b0002
dataLength = 530
numChildren = 0
构建服务消费者
新建cloud-consumerzk-order80
pom
<?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>tudou_cloud</artifactId>
<groupId>org.example</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>cloud-consumerzk-order80</artifactId>
<dependencies>
<!-- SpringBoot整合Web组件 -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</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zookeeper-->
<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>
</project>
yml
server:
port: 80
spring:
application:
name: cloud-consumer-order
cloud:
#注册到zookeeper地址
zookeeper:
connect-string: localhost:2181
主启动
java/**
* @Author LR
* @Date 2022/6/14 22:18
*/
@SpringBootApplication
public class OrderZK80 {
public static void main(String[] args) {
SpringApplication.run(OrderZK80.class, args);
}
}
业务类
/**
* @Author LR
* @Date 2022/6/14 22:19
*/
@Configuration
public class ApplicationContextBean {
@Bean
@LoadBalanced
public RestTemplate getRestTemplate() {
return new RestTemplate();
}
}
/**
* @Author LR
* @Date 2022/6/14 22:19
*/
@RestController
public class OrderZKController {
public static final String INVOKE_URL = "http://cloud-provider-payment";
@Autowired
private RestTemplate restTemplate;
@RequestMapping(value = "/consumer/payment/zk")
public String paymentInfo() {
String result = restTemplate.getForObject(INVOKE_URL + "/payment/zk", String.class);
System.out.println("消费者调用支付服务(zookeeper)--->result:" + result);
return result;
}
}
验证测试
[zk: zookeeper(CONNECTED) 11] ls /
[services, zookeeper]
[zk: zookeeper(CONNECTED) 12] ls /services
[cloud-provider-payment, cloud-consumer-order]
访问地址测试