springCloud Finchley 微服务架构从入门到精通【五】高可用分布式配置中心

谁借莪１个温暖的怀抱￠ 2023-10-17 21:11 23阅读 0赞

实际项目中微服务项目比较多，为了方便就需要配置文件集中管理，接下来写一下分布式配置中心的实现，说明：因为比较简单，这里直接就讲高可用的配置中心，不再分文讲解  
\#\#一、实现配置中心项目\#\#  
\#\#\#1、创建项目\#\#\#  
新建一个spring boot项目：

![这里写图片描述][70]

**选择Config Server 和 Eureka Server：**

![这里写图片描述][70 1]

**完整Pom.xml如下：**

<?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.mayi.springcloud</groupId>
    	<artifactId>commonservice-config</artifactId>
    	<version>0.0.1-SNAPSHOT</version>
    	<packaging>jar</packaging>
    
    	<name>commonservice-config</name>
    	<description>配置中心</description>
    
    	<parent>
    		<groupId>org.springframework.boot</groupId>
    		<artifactId>spring-boot-starter-parent</artifactId>
    		<version>2.0.1.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>
    		<spring-cloud.version>Finchley.M9</spring-cloud.version>
    	</properties>
    
    	<dependencies>
    		<dependency>
    			<groupId>org.springframework.cloud</groupId>
    			<artifactId>spring-cloud-config-server</artifactId>
    		</dependency>
    		<dependency>
    			<groupId>org.springframework.cloud</groupId>
    			<artifactId>spring-cloud-starter-netflix-eureka-server</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>${spring-cloud.version}</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>
    
    	<repositories>
    		<repository>
    			<id>spring-milestones</id>
    			<name>Spring Milestones</name>
    			<url>https://repo.spring.io/milestone</url>
    			<snapshots>
    				<enabled>false</enabled>
    			</snapshots>
    		</repository>
    	</repositories>
    
    
    </project>

\#\#\#2、修改配置\#\#\#  
这里，我们使用 **本地** 方式来实现配置中心

**bootstrap.yml**

spring:
      application:
        name: service-config
      cloud:
        config:
          server:
            native:
              search-locations:
              - classpath:/shared/
      profiles:
        active:
        - native
    server:
      port: 8888

解释 ：

*  classpath: 指明配置文件存放路径
 *  native: 本地方式

\#\#\#3、代码实现\#\#\#  
要开启一个注册中心非常简单，只需要修改启动类，加入\*\*@EnableConfigServer\*\*注解即可

package com.mayi.springcloud;
    
    import org.springframework.boot.SpringApplication;
    import org.springframework.boot.autoconfigure.SpringBootApplication;
    import org.springframework.cloud.config.server.EnableConfigServer;
    import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
    
    @SpringBootApplication
    @EnableEurekaClient
    @EnableConfigServer
    public class CommonserviceConfigApplication {
    
    	public static void main(String[] args) {
    		SpringApplication.run(CommonserviceConfigApplication.class, args);
    	}
    }

\#\#二、客户端集成\#\#

\#\#\#1、修改配置\#\#\#

以[spring-cloud 2.0 微服务架构从入门到精通【三】服务提供者/服务消费者(ribbon)][spring-cloud 2.0 _ribbon]

这篇文章中的service-user微服务为例：

**首先pom.xml中添加配置依赖**

<dependency>
    			<groupId>org.springframework.cloud</groupId>
    			<artifactId>spring-cloud-starter-config</artifactId>
    		</dependency>

修改**service-user** 的 **bootstrap.yml**

spring:
      application: 
        name: service-user
      cloud: 
        config: 
          discovery: 
            enabled: true
            service-id: service-config
          profile: dev
          label: master

解释 ：

service-id ： 指向配置中心的 微服务名，这样就实现了高可用

profile: 此配置为了方便 开发、测试、线上环境的配置文件的切换

\#\#\#2、配置中心添加配置文件\#\#\#  
在service-config 配置中心项目中的shared目录下添加service-user-dev.yml

server:
      port: 8801

注意：此配置文件的名称需要遵守service-user的**application.name + 中划线 + profile** 约定，否则无法读取

添加后目录如下：

![这里写图片描述][70 2]

\#\#\#3、测试\#\#\#

依次启动 Eureka Server ---- service config ---- service-user

输入：http://localhost:8761/

发现service-user 端口中为8801 由上文可知，该端口的配置是从配置中心读取的

![这里写图片描述][70 3]

**接下来，我会依次更新文章，直至整个架构完成，如有兴趣的朋友关注作者 或 加我微信 拉你进入spring cloud社区群**

![这里写图片描述][70 4]

微信公众号：java架构师修行

![这里写图片描述][70 5]

**本公众号将要按照JAVA高级软件架构师实战培训的路线发布一期完整的架构文章，难度由浅入深，适合有一定开发基础想转架构和正在做初级架构开发的人员学习**

[70]: https://img-blog.csdn.net/20180428110734721?watermark/2/text/aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3djYmxvZw==/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70
[70 1]: https://img-blog.csdn.net/20180428110745473?watermark/2/text/aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3djYmxvZw==/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70
[spring-cloud 2.0 _ribbon]: https://segmentfault.com/a/1190000014409093
[70 2]: https://img-blog.csdn.net/2018042811081043?watermark/2/text/aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3djYmxvZw==/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70
[70 3]: https://img-blog.csdn.net/20180428110827318?watermark/2/text/aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3djYmxvZw==/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70
[70 4]: https://img-blog.csdn.net/20180428110842479?watermark/2/text/aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3djYmxvZw==/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70
[70 5]: https://img-blog.csdn.net/2018042811085398?watermark/2/text/aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3djYmxvZw==/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70