Springboot+springCloud単純クラスタの構築

ソース:https://github.com/LM917178900/spring-boot-hello https://github.com/LM917178900/eureka-server https://github.com/LM917178900/ribbon-consumer
1クライアントクラスタの構築
1.1新しいspringbootマイクロサービス、spring-boot-hello
1.2 pom

    <dependencies>
        <dependency>
            <groupId>org.springframework.bootgroupId>
            <artifactId>spring-boot-starterartifactId>
        dependency>
        <dependency>
            <groupId>org.springframework.bootgroupId>
            <artifactId>spring-boot-starter-webartifactId>
        dependency>

        <dependency>
            <groupId>org.springframework.bootgroupId>
            <artifactId>spring-boot-starter-testartifactId>
            <scope>testscope>
        dependency>
        <dependency>
            <groupId>org.springframework.cloudgroupId>
            <artifactId>spring-cloud-starter-eureka-serverartifactId>
        dependency>
    dependencies>
    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloudgroupId>
                <artifactId>spring-cloud-dependenciesartifactId>
                <version>Brixton.SR5version>
                <type>pomtype>
                <scope>importscope>
            dependency>
        dependencies>
    dependencyManagement>

1.3 aplication.properties
Clientはサービス側であり消費側であり、clientを2台の登録センターに登録する.

spring.application.name=hello-service
#          
eureka.client.service-url.defaultZone=http://peer1:1111/eureka/,http://peer2:1112/eureka

1.4起動クラス

package com.didispace.springboothello;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;

/**
 *          
 */
@EnableDiscoveryClient
@SpringBootApplication
public class SpringBootHelloApplication {

    public static void main(String[] args) {
        SpringApplication.run(SpringBootHelloApplication.class, args);
    }

}

1.5 controller

package com.didispace.springboothello.controller;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cloud.client.ServiceInstance;
import org.springframework.cloud.client.discovery.DiscoveryClient;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;

import java.util.logging.Logger;

/**
 * @Author: leimin
 * @Description: new class
 * @Date: 2020/6/8 9:08
 * @Version: 1.0
 */
@RestController
public class HelloController {

    /**
     * xx
     */
    private final Logger logger = Logger.getLogger(String.valueOf(getClass()));

    /**
     * xx
     */
    @Autowired
    private DiscoveryClient client;

    /**
     * xx
     * @return xx
     */
    @RequestMapping(value = "/hello",method = RequestMethod.GET)
    public String index(){

        ServiceInstance instance = client.getLocalServiceInstance();
        logger.info("/hello,host:" + instance.getHost()+", service_id:" +instance.getServiceId());

        return "hello World !";
    }
}

1.6起動
異なるshellウィンドウで、2つのインスタンスを同時に起動

java -jar ./spring-boot-hello-0.0.1.SANPSHOT.jar --server.port=8081
java -jar ./spring-boot-hello-0.0.1.SANPSHOT.jar --server.port=8082

2 eurekaクラスタの構築
2.1新しいspringbootマイクロサービス、eureka-server
2.2 pom

    <dependencies>
        <dependency>
            <groupId>org.springframework.bootgroupId>
            <artifactId>spring-boot-starterartifactId>
        dependency>

        <dependency>
            <groupId>org.springframework.bootgroupId>
            <artifactId>spring-boot-starter-testartifactId>
            <scope>testscope>
            <exclusions>
                <exclusion>
                    <groupId>org.junit.vintagegroupId>
                    <artifactId>junit-vintage-engineartifactId>
                exclusion>
            exclusions>
        dependency>

        <dependency>
            <groupId>org.springframework.cloudgroupId>
            <artifactId>spring-cloud-starter-eureka-serverartifactId>
        dependency>
    dependencies>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloudgroupId>
                <artifactId>spring-cloud-dependenciesartifactId>
                <version>Brixton.SR5version>
                <type>pomtype>
                <scope>importscope>
            dependency>
        dependencies>
    dependencyManagement>

2.3 application.properties
2つのアプリケーションを構成し、互いに登録して検索し、登録同期と高可用性を実現する.それぞれ:アプリケーション-peer 1である.properties

#        ，     
eureka.client.register-with-eureka=true
#        
eureka.client.fetch-registry=true

spring.application.name=eureka-server
server.port=1111

eureka.instance.hostname=peer1
eureka.client.service-url.defaultZone=http://peer2:1112/eureka/

application-peer2.properties

#        ，      
eureka.client.register-with-eureka=true
#        
eureka.client.fetch-registry=true

spring.application.name=eureka-server
server.port=1112

eureka.instance.hostname=peer2
eureka.client.service-url.defaultZone=http://peer1:1111/eureka/

2.4起動クラス

package com.huahua.demo;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.eureka.server.EnableEurekaServer;

/**
 *          
 */
@EnableEurekaServer
@SpringBootApplication
public class EurekaServerApplication {

    public static void main(String[] args) {
        SpringApplication.run(EurekaServerApplication.class, args);
    }
}

2.5起動
異なるshellウィンドウで、2つの登録センターを同時に起動します.

java -jar ./demo-0.0.1-SNAPSHOT.jar --spring.profiles.active=peer1
java -jar ./demo-0.0.1-SNAPSHOT.jar --spring.profiles.active=peer2

3 ribbon消費者負荷の均衡を実現
3.1新しいspringbootマイクロサービス、ribbon-consumer
3.2 pom

    <dependencies>
        <dependency>
            <groupId>org.springframework.bootgroupId>
            <artifactId>spring-boot-starterartifactId>
        dependency>
        <dependency>
            <groupId>org.springframework.bootgroupId>
            <artifactId>spring-boot-starter-webartifactId>
        dependency>

        <dependency>
            <groupId>org.springframework.bootgroupId>
            <artifactId>spring-boot-starter-testartifactId>
            <scope>testscope>
        dependency>
        <dependency>
            <groupId>org.springframework.cloudgroupId>
            <artifactId>spring-cloud-starter-eurekaartifactId>
        dependency>
        <dependency>
            <groupId>org.springframework.cloudgroupId>
            <artifactId>spring-cloud-starter-ribbonartifactId>
        dependency>
    dependencies>
    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloudgroupId>
                <artifactId>spring-cloud-dependenciesartifactId>
                <version>Brixton.SR5version>
                <type>pomtype>
                <scope>importscope>
            dependency>
        dependencies>
    dependencyManagement>

3.3 application

spring.application.name=ribbon-consumer
server.port=9000

#        ，    
eureka.client.service-url.defaultZone=http://localhost:1111/eureka/

3.4起動クラス

package com.example.lei;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
import org.springframework.cloud.client.loadbalancer.LoadBalanced;
import org.springframework.context.annotation.Bean;
import org.springframework.web.client.RestTemplate;

@EnableDiscoveryClient
@SpringBootApplication
public class RibbonConsumerApplication {

    @Bean
    @LoadBalanced
    RestTemplate restTemplate(){
        return new RestTemplate();
    }
    public static void main(String[] args) {
        SpringApplication.run(RibbonConsumerApplication.class, args);
    }

}

3.5 controller

package com.example.lei.controller;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;

/**
 * @Author: leimin
 * @Description: new class
 * @Date: 2020/6/8 16:04
 * @Version: 1.0
 */
@RestController
public class ConsumerController {

    /**
     * xx
     */
    @Autowired
    RestTemplate restTemplate;

    /**
     * yyy
     * @return rr
     */
    @RequestMapping(value = "/ribbon-consumer", method = RequestMethod.GET)
    private String helloConsumer(){

        return restTemplate.getForEntity("http://HELLO-SERVICE/hello",String.class).getBody();
    }
}

3.6直接功績
次に使用を開始し、consumerでspring-boot-helloのインタフェースを呼び出します.