6_config分布式配置中心

小鱼儿 2022-04-13 15:20 236阅读 0赞

## 前言 ##

代码还是使用之前的代码，如果需要完整代码，请拉倒文章底部获取

## 1、新建工程`config-server` ##

### 1.1、添加pom依赖 ###

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

<?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.didispace</groupId>
       <artifactId>config-server</artifactId>
       <version>1.0.0</version>
       <packaging>jar</packaging>
    
       <name>config-server</name>
       <description>Spring Cloud project</description>
    
       <parent>
          <groupId>org.springframework.boot</groupId>
          <artifactId>spring-boot-starter-parent</artifactId>
          <version>1.3.7.RELEASE</version>
          <relativePath/> 
       </parent>
    
       <properties>
          <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
          <java.version>1.8</java.version>
       </properties>
    
       <dependencies>
    
          <dependency>
             <groupId>org.springframework.cloud</groupId>
             <artifactId>spring-cloud-config-server</artifactId>
          </dependency>
    
       </dependencies>
    
       <dependencyManagement>
          <dependencies>
             <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>Brixton.SR5</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>

### 1.2、注解添加分布式配置服务端支持 ###

@EnableConfigServer
    @SpringBootApplication
    public class Application { 
    
       public static void main(String[] args) { 
          new SpringApplicationBuilder(Application.class).web(true).run(args);
       }
    
    }

## 2、第一种：我们以github仓库为例进行讲解 ##

### 2.1、创建github仓库`SpringcloudConfig` ###

#### 2.1.1、其根目录下同时创建文件夹respo ####

#### 2.1.2、该文件夹下创建配置文件 命名规则 ：自定义项目名称-profile.properties,分别写入内容 ####

from=git-dev-1.0
    from=git-prod-1.0
    from=git-test-1.0
    from=git-default-1.0

![ZldYLKEr3bpm4NJT][]

### 2.2、配置工程的配置文件，添加git仓库的属性， ###

spring.application.name=config-server
    server.port=7001
    
    # git仓库
    spring.cloud.config.server.git.uri=https://github.com/HealerJean/SpringcloudConfig/
    spring.cloud.config.server.git.searchPaths=respo
    spring.cloud.config.label=master
    #公开仓库不需要写用户名和密码，如果是私有仓库则需要些用户名和密码
    spring.cloud.config.server.git.username=
    spring.cloud.config.server.git.password=

### 2.3、测试启动这个项目7001端口 ###

浏览器访问[http://localhost:7001/didispace/prod/master][http_localhost_7001_didispace_prod_master] //+分支名称

#### 解释:妈的，居然真的有显示，证明配置服务中心可以从远程程序获取配置信息。 ####

name:应用名称 didispace
    label 表示分支名称 master
    version 表示git上对应的版本号
    
    { 
    	"name": "didispace",
    	"profiles": ["prod"],
    	"label": "master",
    	"version": "68a075d11aea67d4989989c70152a9ac53367e82", 
    	"propertySources": [{ 
    		"name": "https://github.com/HealerJean123/SpringcloudConfig/respo/didispace-prod.properties",
    		"source": { 
    			"from": "git-prod-1.0"
    		}
    	}, { 
    		"name": "https://github.com/HealerJean123/SpringcloudConfig/respo/didispace.properties",
    		"source": { 
    			"from": "git-default-1.0"
    		}
    	}]
    }

### 2.4、http请求地址和资源文件映射如下: ###

•	/{application}/{profile}[/{label}] 上上面的链接http://localhost:7001/didispace/prod/master
    •	/{application}-{profile}.yml
    •	/{label}/{application}-{profile}.yml
    •	/{label}/{application}-{profile}.properties 
    
    •	/{application}-{profile}.properties  http://localhost:7001/didispace-dev.properties

![oaE4F5rxWSK3ki8q][]

## 3、客户端映射 ##

### 3.1、创建工程config-client，pom.xml如下 ###

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

<?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.didispace</groupId>
       <artifactId>config-client</artifactId>
       <version>1.0.0</version>
       <packaging>jar</packaging>
    
       <name>config-client</name>
       <description>Spring Cloud project</description>
    
       <parent>
          <groupId>org.springframework.boot</groupId>
          <artifactId>spring-boot-starter-parent</artifactId>
          <version>1.3.7.RELEASE</version>
          <relativePath/> 
       </parent>
    
       <properties>
          <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
          <java.version>1.8</java.version>
       </properties>
    
       <dependencies>
          <dependency>
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-web</artifactId>
          </dependency>
    
          <dependency>
             <groupId>org.springframework.cloud</groupId>
             <artifactId>spring-cloud-starter-config</artifactId>
          </dependency>
       </dependencies>
    
       <dependencyManagement>
          <dependencies>
             <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>Brixton.SR5</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>

### 3.2、创建bootstrap.properties，来获取配置文件config-server的位置 ###

server.port=7002
    
    spring.application.name=didispace
    spring.cloud.config.profile=dev
    spring.cloud.config.label=master
    spring.cloud.config.uri=http://localhost:7001/

### 3.3、创建controller开始测试，通过后台的from（只要在配置文件中，其实都是from） ###

\*\*`@RefreshScope`\*\*spring-cloud 实现更新配置不用重启服务 @FreshScope

@RefreshScope
    @RestController
    public class TestController { 
    
        @Value("${from}")
        private String from;
    
        @RequestMapping("/from")
        public String from() { 
            return this.from;
        }
    
    }

### 3.4、浏览器访问 [http://localhost:7002/from][http_localhost_7002_from] ###

![ZoPcnfHkL2m3TXyA][]

## 4、添加Eurake服务注册中心 ##

使用之前的注册中心 1111

### 4.1、配置config-server ###

#### 4.1.1、添加eurake依赖包 ####

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

#### 4.1.2、启用注册发现，和配置服务注册地址 ####

@EnableDiscoveryClient
    @EnableConfigServer
    @SpringBootApplication
    public class Application { 
    
       public static void main(String[] args) { 
          new SpringApplicationBuilder(Application.class).web(true).run(args);
       }
    
    }

#### 4.1.3、指定注册中心 ####

#eurake
    #指定服务注册中心
    eureka.client.serviceUrl.defaultZone=http://localhost:1111/eureka/

### 4.2、配置config-client ###

#### 4.2.1、添加eurake依赖包 ####

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

#### 4.2.2、启用注册发现 ####

@EnableDiscoveryClient
    @SpringBootApplication
    public class Application { 
    
       public static void main(String[] args) { 
          new SpringApplicationBuilder(Application.class).web(true).run(args);
       }
    }

#### 4.2.3、配置服务注册中心和服务端的config ####

server.port=7002
    spring.application.name=didispace
    
    
    spring.cloud.config.enabled=true
    spring.cloud.config.discovery.service-id=CONFIG-SERVER
    spring.cloud.config.profile=dev

#### 4.2.4、开始测试，成功 ####

## [HealerJean-代码下载][HealerJean-] ##

## 5、项目实战中的config ##

### 5.1、新建项目sso-config ###

#### 5.1.1、添加pom依赖 ####

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

<?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.carl.auth</groupId>
       <artifactId>sso-config</artifactId>
       <version>0.0.1-SNAPSHOT</version>
       <packaging>jar</packaging>
    
       <name>sso-config</name>
       <description>Demo project for Spring Boot</description>
    
       <parent>
          <groupId>org.springframework.boot</groupId>
          <artifactId>spring-boot-starter-parent</artifactId>
          <version>1.5.10.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>Edgware.SR2</spring-cloud.version>
       </properties>
    
       <dependencies>
          <dependency>
             <groupId>org.springframework.cloud</groupId>
             <artifactId>spring-cloud-config-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>
    
    
    </project>

#### 5.1.2、添加配置管理器支持注解 ####

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

#### 5.1.3、编辑config服务端配置文件 ####

server:
      #服务端口
      port: 8888
      #访问路径
      context-path: /config
      
    #指定日志输出文件
    logging:
      file: "logs/sso-config.log"
    info:
      name : "配置中心"
    
    ---
    
    spring:
      profiles:
        #本地配置文件
        active:
          #配置文件本地化
          - native
    application:
        #指定应用名称
        name: sso-config

#### 5.1.4、运行这个spring boot项目，浏览器访问 http://localhost:8888/config/ 说明下面的启动成功 ####

![pX6QROsIqT4lMgLe][]

#### 5.1.5、配置中心的位置，创建resource 下创建config文件夹，创建sso-dev.propetries 编辑配置文件 ####

1、上面我们提到配置是放置于配置中心，而不放在服务内  
2、由于配置是放在与本地，那么spring的默认配置在目录为resources/config

写入内容

hello_key=value

![h0WCGlpbKfAJZEqk][]

#### 5.1.6、重新启动spring boot项目，访问 http://localhost:8888/config/sso/dev ####

![E5Xazs9mMYUiudtq][]

name:应用名称 sso -dev.properties配置文件的名称
    label 表示分支名称 master
    version 表示git上对应的版本号
    { 
    	"name": "sso",
    	"profiles": ["dev"],
    	"label": null,
    	"version": null,
    	"state": null,
    	"propertySources": [{ 
    		"name": "classpath:/config/sso-dev.properties",
    		"source": { 
    			"hello_key": "value"
    		}
    	}]
    }

### 5.2、接入客户端 ###

#指定日志文件
    logging.file=logs/cas.log
    info.name=单点登录系统
    
    #定义application.name的id
    spring.application.name=sso
    #寻找配置中心为sso-dev.properties
    spring.profiles.active=dev
    #指定配置中心地址
    spring.cloud.config.uri=http://localhost:8888/config
    #开启配置中心
    spring.cloud.config.enabled=true
    #支持自动任务去配置中心刷新配置
    spring.cloud.config.watch.enabled=true
    #30秒刷新一次
    spring.cloud.config.watch.initialDelay=30000
    #请求配置中心超市
    spring.cloud.config.watch.delay=1000
    #检查配置健康
    health.config.enabled=true

![ContactAuthor][]

[ZldYLKEr3bpm4NJT]: /images/20220413/3ff7b650c8ae4480870f35540db6697c.png
[http_localhost_7001_didispace_prod_master]: http://localhost:7001/didispace/prod/master
[oaE4F5rxWSK3ki8q]: /images/20220413/b181c406d8d34b5e82525baea9a8ffeb.png
[http_localhost_7002_from]: http://localhost:7002/from
[ZoPcnfHkL2m3TXyA]: /images/20220413/83a4a71695ba4f8c9ec96b72f7148f16.png
[HealerJean-]: https://github.com/HealerJean/com-hlj-springcloud/tree/master/6
[pX6QROsIqT4lMgLe]: /images/20220413/8c6dc7e3c1064ee3bd83d85c7a01f453.png
[h0WCGlpbKfAJZEqk]: /images/20220413/f8550714cd6444c28ec7c46578bca72c.png
[E5Xazs9mMYUiudtq]: /images/20220413/799cd09fb4f64b50b3951ee5f99bdc65.png
[ContactAuthor]: /images/20220413/e46a119bd81541c29280ce114c5ab3e2.png