Spring Cloud Config分布式配置中心 Spring Cloud ConfigSpring Cloud Config为微服务架构中的微服务提供集中化的外部配置支持，配置服务器为各个不同微服务应用的所有环节提供了一个中心化的外部配置。Spring Cloud Config分为客户端和服务端：服务端：分布式配置中心，它是一个独立的微服务应用，用来连接配置服务器，并为客户端提供获取配置信息，加密，解密信息等访问接口客户端：通过指定的配置中心来管理应用资源，以及与业务相关的配置内容，并在启动的时候从配置中心获取和加载配置信息。配置服务器默认采用git来存储配置信息，这样有助于对环境配置进行版本管理。作用：集中管理配置文件不同环境，不同配置，动态化的配置更新，分环境部署，如：开发、测试、生产等环境运行期间可以动态调整配置，不再需要在每个服务部署的机器上编写配置文件，服务会向配置中心统一拉取配置自己的信息当配置发生变动时，服务节点不需要重启，动态应用新的配置配置信息以REST接口的形式暴露图片来源：狂神说Java具体实例1、服务端pom依赖：<dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-config-server</artifactId> <version>2.1.1.RELEASE</version> </dependency> <!--actuator监控信息--> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-actuator</artifactId> </dependency> </dependencies>application.yml配置：server: port: 3344 spring: application: name: springcloud-config-server #连接远程仓库 cloud: config: server: git: uri: https://github.com/suaxi/SpringCloud-config.gitSpringBoot启动类开启ConfigServer注解：package com.sw.springcloud; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.cloud.config.server.EnableConfigServer; /** * @Author suaxi * @Date 2020/12/30 14:49 */ @SpringBootApplication @EnableConfigServer public class Config_Server_3344 { public static void main(String[] args) { SpringApplication.run(Config_Server_3344.class,args); } } 2、客户端pom依赖：<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> <version>2.1.1.RELEASE</version> </dependency> <!--actuator监控信息--> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-actuator</artifactId> </dependency> </dependencies>bootstrap.yml配置：#系统级别的配置 spring: cloud: config: name: config-client #需要从远程仓库读取的资源名称 profile: dev #版本 label: master #分支 uri: http://localhost:3344 #获取配置信息的地址（Config配置服务端）application.yml配置：#用户级别的配置 spring: application: name: springcloud-config-client-3355Controller（配置REST接口）package com.sw.springcloud.controller; import org.springframework.beans.factory.annotation.Value; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RestController; /** * @Author suaxi * @Date 2020/12/30 15:29 */ @RestController public class ConfigClientController { @Value("${spring.application.name}") private String applicationName; @Value("${eureka.client.service-url.defaultZone}") private String eurekaServer; @Value("${server.port}") private String port; @RequestMapping("/config") public String getConfig(){ return "applicationName:"+applicationName+ "eurekaServer:"+eurekaServer+ "port:"+port; } } 3、Eureka服务注册中心pom依赖：<dependencies> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-eureka-server</artifactId> <version>1.4.7.RELEASE</version> </dependency> <!--config--> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-config</artifactId> <version>2.1.1.RELEASE</version> </dependency> </dependencies>bootstrap.yml配置：与config配置中心的客户端一致，都是从Config服务端获取配置信息spring: cloud: config: name: config-eureka label: master profile: dev uri: http://localhost:3344application.yml配置：spring: application: name: springcloud-config-eureka-7001SpringBoot启动类：package com.sw.springcloud; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.cloud.netflix.eureka.server.EnableEurekaServer; /** * @Author suaxi * @Date 2020/12/29 11:02 */ @SpringBootApplication @EnableEurekaServer //服务端 public class EurekaConfigServer_7001 { public static void main(String[] args) { SpringApplication.run(EurekaConfigServer_7001.class,args); } } 4、Eureka服务提供者pom依赖：<dependencies> <!--需要拿到实体类，配置api module--> <dependency> <groupId>com.sw</groupId> <artifactId>springcloud-api</artifactId> <version>1.0-SNAPSHOT</version> </dependency> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> </dependency> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> </dependency> <dependency> <groupId>com.alibaba</groupId> <artifactId>druid</artifactId> </dependency> <dependency> <groupId>ch.qos.logback</groupId> <artifactId>logback-core</artifactId> </dependency> <dependency> <groupId>org.mybatis.spring.boot</groupId> <artifactId>mybatis-spring-boot-starter</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-test</artifactId> <scope>test</scope> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-jetty</artifactId> </dependency> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-eureka</artifactId> <version>1.4.7.RELEASE</version> </dependency> <!--actuator监控信息--> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-actuator</artifactId> </dependency> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-hystrix</artifactId> <version>1.4.7.RELEASE</version> </dependency> <!--config--> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-config</artifactId> <version>2.1.1.RELEASE</version> </dependency> </dependencies>bootstrap.yml配置：与以上两个的配置一致，都是从Config服务端获取配置信息spring: cloud: config: name: config-dept label: master profile: dev uri: http://localhost:3344application.yml配置：spring: application: name: springcloud-config-dept-8088服务提供者对比之前的配置（application.yml）：通过Config分布式配置中心，将配置文件放到git统一管理，现只需从Config-server获取即可server: port: 8088 #mybatis配置 mybatis: type-aliases-package: com.sw.springcloud.pojo config-location: classpath:mybatis/mybatis-config.xml mapper-locations: classpath:mybatis/mapper/*.xml #Spring配置 spring: application: name: springcloud-provider-dept datasource: type: com.alibaba.druid.pool.DruidDataSource driver-class-name: com.mysql.cj.jdbc.Driver url: jdbc:mysql://localhost:3306/db01?useUnicode=true&character=UFT-8 username: root password: 123456 #配置Eureka，配置服务注册到哪里 eureka: client: service-url: defaultZone: http://eureka7001.com:7001/eureka/,http://eureka7002.com:7002/eureka/,http://eureka7003.com:7003/eureka/ instance: instance-id: springcloud-provider_dept8088 #修改Eureka默认描述信息 prefer-ip-address: true #显示服务的真实ip地址，替换原先的localhost #info配置 info: app.name: springcloud-demo company.name: suaxi 配置文件交由git统一管理