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增加 Consul 入门

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YunaiV
2020-06-11 19:18:08 +08:00
parent 1b50b85d54
commit 1ed2283f8d
8 changed files with 266 additions and 0 deletions
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62
labx-27/labx-27-sc-consul-discovery-demo01-consumer/pom.xml Normal file
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<?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>labx-27</artifactId>
<groupId>cn.iocoder.springboot.labs</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>labx-27-sc-consul-discovery-demo01-consumer</artifactId>
<properties>
<spring.boot.version>2.2.4.RELEASE</spring.boot.version>
<spring.cloud.version>Hoxton.SR1</spring.cloud.version>
</properties>
<!--
引入 Spring Boot、Spring Cloud、Spring Cloud Alibaba 三者 BOM 文件，进行依赖版本的管理，防止不兼容。
在 https://dwz.cn/mcLIfNKt 文章中，Spring Cloud Alibaba 开发团队推荐了三者的依赖关系
-->
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>${spring.boot.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>${spring.cloud.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<dependencies>
<!-- 引入 SpringMVC 相关依赖，并实现对其的自动配置 -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<!-- 引入 Spring Cloud Consul Discovery 相关依赖，将 Consul 作为注册中心，并实现对其的自动配置 -->
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-consul-discovery</artifactId>
</dependency>
<!-- 引入 Spring Boot Actuator 组件，因为需要通过它提供健康检查的接口给 Consul -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
</dependencies>
</project>

69
labx-27/labx-27-sc-consul-discovery-demo01-consumer/src/main/java/cn/iocoder/springcloud/labx27/consuldemo/consumer/DemoConsumerApplication.java Normal file
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package cn.iocoder.springcloud.labx27.consuldemo.consumer;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.ServiceInstance;
import org.springframework.cloud.client.discovery.DiscoveryClient;
import org.springframework.cloud.client.loadbalancer.LoadBalancerClient;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;
import java.util.List;
@SpringBootApplication
// @EnableDiscoveryClient
public class DemoConsumerApplication {
public static void main(String[] args) {
SpringApplication.run(DemoConsumerApplication.class, args);
}
@Configuration
public class RestTemplateConfiguration {
@Bean
public RestTemplate restTemplate() {
return new RestTemplate();
}
}
@RestController
static class TestController {
@Autowired
private DiscoveryClient discoveryClient;
@Autowired
private RestTemplate restTemplate;
@Autowired
private LoadBalancerClient loadBalancerClient;
@GetMapping("/hello")
public String hello(String name) {
// 获得服务 `demo-provider` 的一个实例
ServiceInstance instance;
if (true) {
// 获取服务 `demo-provider` 对应的实例列表
List<ServiceInstance> instances = discoveryClient.getInstances("demo-provider");
// 选择第一个
instance = instances.size() > 0 ? instances.get(0) : null;
} else {
instance = loadBalancerClient.choose("demo-provider");
}
// 发起调用
if (instance == null) {
throw new IllegalStateException("获取不到实例");
}
String targetUrl = instance.getUri() + "/echo?name=" + name;
String response = restTemplate.getForObject(targetUrl, String.class);
// 返回结果
return "consumer:" + response;
}
}
}

12
labx-27/labx-27-sc-consul-discovery-demo01-consumer/src/main/resources/application.yaml Normal file
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spring:
application:
name: demo-consumer # Spring 应用名
cloud:
zookeeper:
connect-string: 127.0.0.1:2181
# Zookeeper 作为注册中心的配置项，对应 ZookeeperDiscoveryProperties 配置类
discovery:
root: /services # Zookeeper 数据存储的根节点，默认为 /services
server:
port: 28080 # 服务器端口。默认为 8080

62
labx-27/labx-27-sc-consul-discovery-demo01-provider/pom.xml Normal file
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<?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>labx-27</artifactId>
<groupId>cn.iocoder.springboot.labs</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>labx-27-sc-consul-discovery-demo01-provider</artifactId>
<properties>
<spring.boot.version>2.2.4.RELEASE</spring.boot.version>
<spring.cloud.version>Hoxton.SR1</spring.cloud.version>
</properties>
<!--
引入 Spring Boot、Spring Cloud、Spring Cloud Alibaba 三者 BOM 文件，进行依赖版本的管理，防止不兼容。
在 https://dwz.cn/mcLIfNKt 文章中，Spring Cloud Alibaba 开发团队推荐了三者的依赖关系
-->
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>${spring.boot.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>${spring.cloud.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<dependencies>
<!-- 引入 SpringMVC 相关依赖，并实现对其的自动配置 -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<!-- 引入 Spring Cloud Consul Discovery 相关依赖，将 Consul 作为注册中心，并实现对其的自动配置 -->
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-consul-discovery</artifactId>
</dependency>
<!-- 引入 Spring Boot Actuator 组件，因为需要通过它提供健康检查的接口给 Consul -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
</dependencies>
</project>

27
labx-27/labx-27-sc-consul-discovery-demo01-provider/src/main/java/cn/iocoder/springcloud/labx27/consuldemo/provider/DemoProviderApplication.java Normal file
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package cn.iocoder.springcloud.labx27.consuldemo.provider;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
@SpringBootApplication
@EnableDiscoveryClient
public class DemoProviderApplication {
public static void main(String[] args) {
SpringApplication.run(DemoProviderApplication.class, args);
}
@RestController
static class TestController {
@GetMapping("/echo")
public String echo(String name) {
return "provider:" + name;
}
}
}

14
labx-27/labx-27-sc-consul-discovery-demo01-provider/src/main/resources/application.yaml Normal file
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spring:
application:
name: demo-provider # Spring 应用名
cloud:
# Spring Cloud Consul 通用配置项，对应 ConsulProperties 类
consul:
host: 127.0.0.1 # Consul 主机
port: 8500 # Consul 端口
# Spring Cloud Consul Discovery 配置项，对应 ConsulDiscoveryProperties 类
discovery:
service-name: ${spring.application.name} # 注册到 Consul 的服务名，默认为 `spring.application.name` 配置项
server:
port: 18080 # 服务器端口。默认为 8080

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labx-27/pom.xml Normal file
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<?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>labs-parent</artifactId>
<groupId>cn.iocoder.springboot.labs</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>labx-27</artifactId>
<modules>
<module>labx-27-sc-consul-discovery-demo01-provider</module>
<module>labx-27-sc-consul-discovery-demo01-consumer</module>
</modules>
</project>

1
pom.xml
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@@ -103,6 +103,7 @@
<!-- <module>labx-25</module>-->
<!-- <module>labx-26</module>-->
<module>labx-27</module>
</modules>
</project>