10.SpringCloud学习笔记–ZooKeeper
支付服务注册进zookeeper
1、建module
cloud-provider-payment8004
2、改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>cloud2020</artifactId>
<groupId>demo.yangxu.springcloud</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>demo.yangxu.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zookeeper3.4.14版本-->
<!--zookeeper版本要与服务器上的版本一致-->
<dependency>
<groupId>org.apache.zookeeper</groupId>
<artifactId>zookeeper</artifactId>
<version>3.4.14</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>
3、写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
spring:
#服务别名——注册zookeeper到注册中心名称
application:
name: cloud-provider-payment
cloud:
zookeeper:
connect-string: 192.168.25.157:2181
4、主启动类
package demo.yangxu.springcloud;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
@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);
}
}
5、业务层
Controller
demo.yangxu.springcloud.controller.PaymentController
package demo.yangxu.springcloud.controller;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import java.util.UUID;
@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
解决zookeeper版本冲突问题
排除自带的zookeeper3.5.3，添加zookeeper3.4.14版本
<!-- 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zookeeper3.4.14版本-->
<!--zookeeper版本要与服务器上的版本一致-->
<dependency>
<groupId>org.apache.zookeeper</groupId>
<artifactId>zookeeper</artifactId>
<version>3.4.14</version>
</dependency>
7、测试
在 linux 下启动 zkCli.sh
[root@localhost bin]# ./zkCli.sh
[zk: localhost:2181(CONNECTED) 0] ls /
[services, zookeeper]
[zk: localhost:2181(CONNECTED) 1] ls /services
[cloud-provider-payment]
[zk: localhost:2181(CONNECTED) 4] ls /services/cloud-provider-payment
[5b833c7a-6a7b-43a9-aecf-a6f8cafc76b7]
[zk: localhost:2181(CONNECTED) 6] ls /services/cloud-provider-payment/5b833c7a-6a7b-43a9-aecf-a6f8cafc76b7
[]
[zk: localhost:2181(CONNECTED) 8] get /services/cloud-provider-payment/5b833c7a-6a7b-43a9-aecf-a6f8cafc76b7
{"name":"cloud-provider-payment","id":"5b833c7a-6a7b-43a9-aecf-a6f8cafc76b7","address":"DESKTOP-D47B342.localdomain","port":8004,"sslPort":null,"payload":{"@class":"org.springframework.cloud.zookeeper.discovery.ZookeeperInstance","id":"application-1","name":"cloud-provider-payment","metadata":{}},"registrationTimeUTC":1595304583390,"serviceType":"DYNAMIC","uriSpec":{"parts":[{"value":"scheme","variable":true},{"value":"://","variable":false},{"value":"address","variable":true},{"value":":","variable":false},{"value":"port","variable":true}]}}
cZxid = 0x6
ctime = Tue Jul 21 12:09:43 CST 2020
mZxid = 0x6
mtime = Tue Jul 21 12:09:43 CST 2020
pZxid = 0x6
cversion = 0
dataVersion = 0
aclVersion = 0
ephemeralOwner = 0x1000000949a0001
dataLength = 548
numChildren = 0
[zk: localhost:2181(CONNECTED) 2] quit
对json串进行格式化
{
"name": "cloud-provider-payment",
"id": "5b833c7a-6a7b-43a9-aecf-a6f8cafc76b7",
"address": "DESKTOP-D47B342.localdomain",
"port": 8004,
"sslPort": null,
"payload": {
"@class": "org.springframework.cloud.zookeeper.discovery.ZookeeperInstance",
"id": "application-1",
"name": "cloud-provider-payment",
"metadata": {}
},
"registrationTimeUTC": 1595304583390,
"serviceType": "DYNAMIC",
"uriSpec": {
"parts": [
{
"value": "scheme",
"variable": true
},
{
"value": "://",
"variable": false
},
{
"value": "address",
"variable": true
},
{
"value": ":",
"variable": false
},
{
"value": "port",
"variable": true
}
]
}
}
浏览器访问
http://localhost:8004/payment/zk
springcloud with zookeeper: 8004 a53e5915-65cc-4457-8a99-72241791357b
临时还是持久节点
临时
订单服务注册进zookeeper
1、建module
cloud-consumerzk-order80
2、改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>cloud2020</artifactId>
<groupId>demo.yangxu.springcloud</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zookeeper3.4.14版本-->
<dependency>
<groupId>org.apache.zookeeper</groupId>
<artifactId>zookeeper</artifactId>
<version>3.4.14</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>
3、写yml
server:
port: 80
spring:
#服务别名——注册zookeeper到注册中心名称
application:
name: cloud-consumer-order
cloud:
zookeeper:
connect-string: 192.168.25.157:2181
4、主启动类
package demo.yangxu.springcloud;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
@SpringBootApplication
@EnableDiscoveryClient
public class OrderZKMain80 {
public static void main(String[] args) {
SpringApplication.run(OrderZKMain80.class,args);
}
}
5、业务层
配置Bean
demo.yangxu.springcloud.config.ApplicationContextConfig
package demo.yangxu.springcloud.config;
import org.springframework.cloud.client.loadbalancer.LoadBalanced;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.client.RestTemplate;
@Configuration
public class ApplicationContextConfig {
@Bean
@LoadBalanced
public RestTemplate getRestTemplate(){
return new RestTemplate();
}
}
Controller
demo.yangxu.springcloud.controller.OrderZKController
package demo.yangxu.springcloud.controller;
import lombok.extern.slf4j.Slf4j;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;
import javax.annotation.Resource;
@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;
}
}
6、测试
在 linux 下启动 zkCli.sh
[root@localhost ~]# /usr/local/zookeeper-3.4.14/bin/zkCli.sh
[zk: localhost:2181(CONNECTED) 1] ls /services
[cloud-provider-payment, cloud-consumer-order]
浏览器访问
http://localhost/consumer/payment/zk
springcloud with zookeeper: 8004 312798e7-cf07-4ac9-9112-980464ea487a
