SpringCloud整合zookeeper
- 前言
- 支付服务注册进zookeeper
-
- 具体步骤
-
- ZooKeeper的服务节点是临时节点,并且当微服务一段时间没有发送心跳给zk,那zk就会将其踢出去
- 如果linux上面的zk是3.4+,而idea上面的默认引入的是3.5+,那么可能会出现jar包冲突问题,解决方法如下
- 订单服务注册进zookeeper
前言
SpringCloud----环境搭建
SpringCloud—Eureka
支付服务注册进zookeeper
- 注册中心Zookeeper
zookeeper是一个分布式协调工具,可以实现注册中心功能
关闭Linux服务器防火墙后,启动zookeeper服务器
用到的Linux命令行:
- systemctl stop firewalld关闭防火墙
- systemctl status firewalld查看防火墙状态
- ipconfig查看IP地址
- ping查验结果
zookeeper服务器取代Eureka服务器,zk作为服务注册中心
具体步骤
1.新建名为cloud-provider-payment8004的Maven工程。
2.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>cloud_Parent</artifactId>
<groupId>dhy.xpy</groupId>
<version>520.521.finally</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>dhy_cloud_provider_payment8004</artifactId>
<properties>
<maven.compiler.source>8</maven.compiler.source>
<maven.compiler.target>8</maven.compiler.target>
</properties>
<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>dhy.xpy</groupId>
<artifactId>cloud-api-commons</artifactId>
<version>520.521.finally</version>
</dependency>
<!-- SpringBoot整合zookeeper客户端 -->
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-zookeeper-discovery</artifactId>
</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>
3.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:
#一个zookeeper机器的ip加端口号
connect-string: 192.168.112.128:2181
4.主启动类
@SpringBootApplication
//让注册中心能够发现,扫描到当前微服务
//@EnableEurekaClient只适用于Eureka作为注册中心
@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);
}
}
5.Controller
@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();
}
}
6.启动8004注册进zookeeper(要先启动zookeeper的server)
- 验证测试:浏览器 - http://localhost:8004/payment/zk
- 验证测试2 :接着用zookeeper客户端操作
zk的客户端可以发现多个一个微服务节点上线
当前微服务节点的详细信息用JSON字符串封装来进行表示
通过JSON字符串格式化工具,可以得到下面的结果:
{
"name": "cloud-provider-payment",
"id": "59fa22e6-d0e1-493a-ad03-85cb1ad4946d",
"address": "LAPTOP-PEE1UMNH",
"port": 8004,
"sslPort": null,
"payload": {
"@class": "org.springframework.cloud.zookeeper.discovery.ZookeeperInstance",
"id": "application-1",
"name": "cloud-provider-payment",
"metadata": {
}
},
"registrationTimeUTC": 1634218867331,
"serviceType": "DYNAMIC",
"uriSpec": {
"parts": [
{
"value": "scheme",
"variable": true
},
{
"value": "://",
"variable": false
},
{
"value": "address",
"variable": true
},
{
"value": ":",
"variable": false
},
{
"value": "port",
"variable": true
}
]
}
}
ZooKeeper的服务节点是临时节点,并且当微服务一段时间没有发送心跳给zk,那zk就会将其踢出去
如果linux上面的zk是3.4+,而idea上面的默认引入的是3.5+,那么可能会出现jar包冲突问题,解决方法如下
<!-- 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 防止与3.4.9起冲突-->
<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>
订单服务注册进zookeeper
1.新建cloud-consumerzk-order80
2.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>cloud_Parent</artifactId>
<groupId>dhy.xpy</groupId>
<version>520.521.finally</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>dhy-cloud-consumerzk-order80</artifactId>
<properties>
<maven.compiler.source>8</maven.compiler.source>
<maven.compiler.target>8</maven.compiler.target>
</properties>
<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>
</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>
3.YML
server:
port: 80
#服务别名----注册zookeeper到注册中心名称
spring:
application:
name: cloud-consumer-order
cloud:
zookeeper:
connect-string: 192.168.112.128:2181
4.主启动
@SpringBootApplication
@EnableDiscoveryClient
public class OrderZKMain80 {
public static void main(String[] args) {
SpringApplication.run(OrderZKMain80.class, args);
}
}
5.业务类
@Configuration
public class ApplicationContextConfig
{
@Bean
//使用@LoadBalanced注解赋予RestTemplate负载均衡的能力
@LoadBalanced
public RestTemplate getRestTemplate()
{
return new RestTemplate();
}
}
@RestController
@Slf4j
public class OrderZKController
{
//zk上面微服务的名字
//通过 @LoadBalanced注解的拦截器拦截restTemplate实例对象发出的请求
//做服务名到ip的映射
public static final String INVOKE_URL = "http://cloud-provider-payment";
@Resource
private RestTemplate restTemplate;
@GetMapping(value = "/consumer/payment/zk")
public String paymentInfo()
{
//返回值为String类型,无请求参数
String result = restTemplate.getForObject(INVOKE_URL+"/payment/zk",String.class);
return result;
}
}
6.验证测试
运行ZooKeeper服务端,cloud-consumerzk-order80,cloud-provider-payment8004。
打开ZooKeeper客户端:
{
"name": "cloud-consumer-order",
"id": "95218618-544c-4e37-a692-25fbb6f0e218",
"address": "LAPTOP-PEE1UMNH",
"port": 80,
"sslPort": null,
"payload": {
"@class": "org.springframework.cloud.zookeeper.discovery.ZookeeperInstance",
"id": "application-1",
"name": "cloud-consumer-order",
"metadata": {
}
},
"registrationTimeUTC": 1634222801335,
"serviceType": "DYNAMIC",
"uriSpec": {
"parts": [
{
"value": "scheme",
"variable": true
},
{
"value": "://",
"variable": false
},
{
"value": "address",
"variable": true
},
{
"value": ":",
"variable": false
},
{
"value": "port",
"variable": true
}
]
}
}
7.访问测试地址 - http://localhost/consumer/payment/zk