SpringCloud 教程 | 第十四篇: 服务注册(consul)

超、凢脫俗 2022-05-19 04:15 168阅读 0赞

这篇文章主要介绍 spring cloud consul 组件，它是一个提供服务发现和配置的工具。consul具有分布式、高可用、高扩展性。

## 一、consul 简介 ##

consul 具有以下性质：

*  服务发现：consul通过http 方式注册服务，并且服务与服务之间相互感应。
 *  服务健康监测
 *  key/value 存储
 *  多数据中心

consul可运行在mac windows linux 等机器上。

## 二、consul安装 ##

linux

$ mkdir -p $GOPATH/src/github.com/hashicorp && cd $!
    $ git clone https://github.com/hashicorp/consul.git
    $ cd consul
    $ make bootstrap
    $ make bootstrap

windows下安装：  
见[consul怎么在windows下安装][consul_windows]

## 三、构建工程 ##

构建一个consul-miya的springboot工程，导入依赖pring-cloud-starter-consul-discovery，其依赖文件：

<?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">
        <modelVersion>4.0.0</modelVersion>
    
        <groupId>com.forezp</groupId>
        <artifactId>consul-miya</artifactId>
        <version>0.0.1-SNAPSHOT</version>
        <packaging>jar</packaging>
    
        <name>consul-miya</name>
        <description>Demo project for Spring Boot</description>
    
        <parent>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-parent</artifactId>
            <version>1.5.2.RELEASE</version>
            <relativePath/> 
        </parent>
    
        <properties>
            <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
            <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
            <java.version>1.8</java.version>
        </properties>
    
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-starter-consul-discovery</artifactId>
            </dependency>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-web</artifactId>
            </dependency>
    
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-test</artifactId>
                <scope>test</scope>
            </dependency>
        </dependencies>
    
        <dependencyManagement>
            <dependencies>
                <dependency>
                    <groupId>org.springframework.cloud</groupId>
                    <artifactId>spring-cloud-dependencies</artifactId>
                    <version>Dalston.RELEASE</version>
                    <type>pom</type>
                    <scope>import</scope>
                </dependency>
            </dependencies>
        </dependencyManagement>
    
        <build>
            <plugins>
                <plugin>
                    <groupId>org.springframework.boot</groupId>
                    <artifactId>spring-boot-maven-plugin</artifactId>
                </plugin>
            </plugins>
        </build>
    
    
    </project>

在其入口文件ConsulMiyaApplication加入注解@EnableDiscoveryClient，开启服务发现：

@SpringBootApplication
    @EnableDiscoveryClient
    @RestController
    public class ConsulMiyaApplication {
    
        @RequestMapping("/hi")
        public String home() {
            return "hi ,i'm miya";
        }
    
        public static void main(String[] args) {
            new SpringApplicationBuilder(ConsulMiyaApplication.class).web(true).run(args);
        }
    }

在其配置文件application.yml指定consul服务的端口为8500：

spring:
      cloud:
        consul:
          host: localhost
          port: 8500
          discovery:
            healthCheckPath: ${management.contextPath}/health
            healthCheckInterval: 15s
            instance-id: consul-miya
      application:
        name: consul-miya
    server:
      port: 8502

启动工程，访问localhost:8500,可以发现consul-miya被注册了。

> [http://blog.csdn.net/forezp/article/details/70245644][http_blog.csdn.net_forezp_article_details_70245644]  
> 本文出自[方志朋的博客][Link 1]

[consul_windows]: http://blog.csdn.net/forezp/article/details/70188595
[http_blog.csdn.net_forezp_article_details_70245644]: http://blog.csdn.net/forezp/article/details/70245644
[Link 1]: http://blog.csdn.net/forezp