SpringCloud学习笔记——服务注册中心——Consul

参考：尚硅谷2020最新版SpringCloud(H版&alibaba)——周阳

3. Consul

简介

官网https://www.consul.io/intro/index.html

中文官网https://www.springcloud.cc/spring-cloud-consul.html
能干嘛
- 服务发现：提供HTTP和DNS两种方式
- 健康监测：支持多种方式，HTTP、TCP、Docker、Shell脚本定制化
- KV存储：Key、Value的存储方式
- 多数据中心：Consul支持多数据中心
- 可视化web界面
下载地址

https://www.consul.io/downloads
windows下安装教程

解压就一个consul.exe文件，安装成功！

linux下安装教程

下载consul

wget https://releases.hashicorp.com/consul/1.8.0/consul_1.8.0_linux_amd64.zip

解压consul
```
unzip consul_1.8.0_linux_amd64.zip
```
测试 consul
```
./consul
```
查看版本
```
./consul version
```

启动consul

./consul agent -dev -ui -node=consul-dev -client=服务器内网ip

在这里插入图片描述

访问测试：服务器外网ip：8500
关闭 consul

ctrl+c

查看版本号

consul --version
使用开发者模式启动

进入目录，打开命令行输入consul agent -dev
访问Consul首页

地址：http://localhost:8500

创建服务提供者并注册

创建子模块，子模块名称

cloud-providerconsul-payment8006

pom依赖

<dependencies>
    <!-- 引入自己定义的api通用包，可以使用Payment支付Entity -->
    <dependency>
        <groupId>com.naclo</groupId>
        <artifactId>cloud-api-commons</artifactId>
        <version>${project.version}</version>
    </dependency>
    <!--SpringCloud consul-server -->
    <dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-starter-consul-discovery</artifactId>
    </dependency>
    <!-- SpringBoot整合Web组件 -->
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-actuator</artifactId>
    </dependency>
    <!--日常通用jar包配置-->
    <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>
    <dependency>
        <groupId>cn.hutool</groupId>
        <artifactId>hutool-all</artifactId>
        <version>RELEASE</version>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>cn.hutool</groupId>
        <artifactId>hutool-all</artifactId>
        <version>RELEASE</version>
        <scope>test</scope>
    </dependency>
</dependencies>

创建application.yml

###consul服务端口号
server:
  port: 8006

spring:
  application:
    name: consul-provider-payment
####consul注册中心地址
  cloud:
    consul:
      host: localhost
      port: 8500
      discovery:
        #hostname: 127.0.0.1
        service-name: ${spring.application.name}

创建主启动类PaymentMain8006

@SpringBootApplication
@EnableDiscoveryClient
public class PaymentMain8006 {
    public static void main(String[] args) {
        SpringApplication.run(PaymentMain8006.class, args);
    }
}

编写PaymentController

@RestController
@Slf4j
public class PaymentController {
    @Value("${server.port}")
    private String serverPort;

    @RequestMapping(value = "/payment/consul")
    public String paymentConsul() {
        return "springcloud with consul: " + serverPort + "\t   " + UUID.randomUUID().toString();
    }
}

启动，测试
- 访问http://localhost:8500/
- 访问http://localhost:8006/payment/consul
  
  返回springcloud with consul: 8006 a1a1653a-54ac-44cc-ab09-6b2f7b5b8a22

创建服务消费者并注册

创建子模块，子模块名称

cloud-consumerconsul-order80

pom依赖

<dependencies>
    <!--SpringCloud consul-server -->
    <dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-starter-consul-discovery</artifactId>
    </dependency>
    <!-- SpringBoot整合Web组件 -->
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-actuator</artifactId>
    </dependency>
    <!--日常通用jar包配置-->
    <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>

创建application.yml

###consul服务端口号
server:
  port: 80

spring:
  application:
    name: cloud-consumer-order
  ####consul注册中心地址
  cloud:
    consul:
      host: localhost
      port: 8500
      discovery:
        #hostname: 127.0.0.1
        service-name: ${spring.application.name}

创建主启动类OrderConsulMain80

@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 OrderConsulMain80 {
    public static void main(String[] args) {
        SpringApplication.run(OrderConsulMain80.class, args);
    }
}

引入RestTemplate

@Configuration
public class ApplicationContextConfig {
    @Bean
    @LoadBalanced
    public RestTemplate getRestTemplate() {
        return new RestTemplate();
    }
}

编写PaymentController

@RestController
@Slf4j
public class OrderConsulController {
    public static final String INVOKE_URL = "http://consul-provider-payment";

    @Resource
    private RestTemplate restTemplate;

    @GetMapping(value = "/consumer/payment/consul")
    public String paymentInfo() {
        String result = restTemplate.getForObject(INVOKE_URL + "/payment/consul", String.class);
        return result;
    }
}

启动，测试
- 访问http://localhost:8500/
- 访问http://localhost:80/consumer/payment/consul
  
  返回springcloud with consul: 8006 16b48677-d49f-4fa9-9534-cfa4d5b18f9e

SpringCloud学习笔记——服务注册中心——Consul

SpringCloud学习笔记——服务注册中心——Consul

3. Consul

简介

创建服务提供者并注册

创建服务消费者并注册

猜你喜欢