之前Spring Cloud Config基础篇这篇文章介绍了Spring Cloud Config 配置中心基础的实现，今天继续聊下Spring Cloud Config 并结合nacos做服务注册中心，实现多项目、多配置文件、按项目目录划分等功能的配置服务中心。
阅读本篇文章之前，最好要有nacos基础；关于nacos是什么，如何使用，可以参考我的上一篇文章 Spring Cloud Alibaba（一） 如何使用nacos服务注册和发现，或者直接链接到官网教程Nacos 快速开始
本示例主要内容采用nacos做服务注册中心，Spring Cloud Config做配置服务中心，在上一篇基础上新建了ali-nacos-config-server配置服务中心项目、ali-nacos-config-client配置客户端项目、并把ali-nacos-consumer-feign配置也调整成从配置中心加载配置
支持多项目，config-repo配置文件目录按项目名称来规划，在配置中心 searchPaths: /cloud-alibaba/config-repo/{application}/ 使用application自动识别查找目录
支持单项目多配置文件，ali-nacos-config-client项目的配置文件 spring.cloud.config.name=${spring.application.name},myconfig，通过指定多个name实现多配置文件
实现示例过程 新建ali-nacos-config-server项目该项目用来做配置服务中心，以下贴出关键部分代码
pom.xml
<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> </dependency> <dependency> <groupId>com.alibaba.cloud</groupId> <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> </dependencies>application.yml
server: port: 8001 spring: application: name: ali-nacos-config-server cloud: nacos: discovery: server-addr: localhost:8848 config: server: git: #uri: https://github.com/smltq/spring-boot-demo.git uri: https://gitee.com/tqlin/spring-boot-demo.git searchPaths: /cloud-alibaba/config-repo/{application}/ force-pull: true启动类AnConfigServerApplication.java
@SpringBootApplication @EnableDiscoveryClient @EnableConfigServer public class AnConfigServerApplication { public static void main(String[] args) { SpringApplication.run(AnConfigServerApplication.class, args); } } 新建ali-nacos-config-client项目该项目用来做配置中心客户端测试之一，以下贴出几处关键代码
pom.xml
<dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>com.alibaba.cloud</groupId> <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId> </dependency> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-config</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-actuator</artifactId> </dependency> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-netflix-ribbon</artifactId> </dependency> </dependencies>bootstrap.yml
spring: application: name: ali-nacos-config-client cloud: nacos: discovery: server-addr: localhost:8848 config: name: ${spring.application.name},myconfig uri: :8001/ # config server 配置服务地址 profile: ${spring.profiles.active} label: master profiles: active: pro # 配置文件版本（该示例分为test,dev,pro）写个配置读取测试类HelloController.java
@RestController public class HelloController { @Value("${easy.hello}") private String hello; @Value("${easy.myconfig}") private String myconfig; @RequestMapping("/hello") public Map hello() { Map map = new HashMap<>(); map.put("hello", hello); map.put("myconfig", myconfig); return map; } }启动类AnConfigClientApplication.java
@SpringBootApplication @EnableDiscoveryClient public class AnConfigClientApplication { public static void main(String[] args) { SpringApplication.run(AnConfigClientApplication.class, args); } } 调整ali-nacos-consumer-feign项目以下贴出调整部分代码
pom.xml增加spring-cloud-starter-config依赖
<dependencies> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-netflix-ribbon</artifactId> </dependency> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-openfeign</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>com.alibaba.cloud</groupId> <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-actuator</artifactId> </dependency> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-config</artifactId> </dependency> </dependencies>