Config Server基本使用
根据前面SpringCloud架构图,首先第一步,要搞个 configServer来联通远程GIT仓库,来读取远程配置;
这里GIT仓库,我们一般选用GitHub https://github.com/,或者码云 https://gitee.com/
我们这里用GitHub演示
建个仓库 microservice-config 然后 Git下载本地;
上传一个配置文件上到git仓库,application.yml 记住要utf-8编码,否则乱码,解析各种问题;
文件内容:
profile: hello
随便搞,目前只要能读取到配置即可;
新建module:microservice-config-server-4001
<dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-config-server</artifactId> </dependency>
完成pom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 https://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <parent> <groupId>com.javaxl</groupId> <artifactId>testSpringcloud</artifactId> <version>1.0-SNAPSHOT</version> </parent> <artifactId>microservice-config-server-4001</artifactId> <properties> <java.version>1.8</java.version> </properties> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> <exclusions> <exclusion> <groupId>org.junit.vintage</groupId> <artifactId>junit-vintage-engine</artifactId> </exclusion> </exclusions> </dependency> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-config-server</artifactId> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins> </build> </project>
启动类ConfigServerApplication_4001:
package com.javaxl.microserviceconfigserver4001; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.cloud.config.server.EnableConfigServer; @SpringBootApplication @EnableConfigServer public class MicroserviceConfigServer4001Application { public static void main(String[] args) { SpringApplication.run(MicroserviceConfigServer4001Application.class, args); } }
这里要加下注解:@EnableConfigServer
这里我们搞下仓库的Http地址:
然后项目的application.yml配置下:
server: port: 4001 spring: application: name: microservice-config cloud: config: server: git: uri: https://github.com/lixiao12/microservice-config.git
主要是要配置一个git请求地址:
本地Hosts加个本地域名映射:
127.0.0.1 configserver.javaxl.com
然后我们请求:http://configserver.javaxl.com:4001/application-xxx.yml
返回结果了正确的文本结果;
至于请求路径,有匹配规则:
The HTTP service has resources in the form:
/{application}/{profile}[/{label}] /{application}-{profile}.yml /{label}/{application}-{profile}.yml /{application}-{profile}.properties /{label}/{application}-{profile}.properties
Config Client 使用
根据前面的config原理图,我们需要建立Client端调用server端,最终实现client端获取远程git配置信息;
为了后面演示方便,我们提交三个配置文件到远程git库;
application.yml:
--- spring: profiles: active: dev --- spring: profiles: dev port: 111 --- spring: profiles: test port: 222
crm-dev.yml
port: 777
crm-test.yml
port: 888
然后我们新建一个module microservice-config-client-5001
加下依赖:
<dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-config</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-tomcat</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency>
我们项目启动的时候,就要调用server config端,获取配置信息,所以这里要bootstrap.yml配置文件,优先级最高:
spring: application: name: application-dev cloud: config: name: crm uri: http://configserver.javaxl.com:4001 profile: test label: master fail-fast: true
application.yml:
server: port: 5001 context-path: /
再搞一个 ConfigClientController 类 测试显示端口:
package com.javaxl.microserviceconfigclient5001.controller; import org.springframework.beans.factory.annotation.Value; import org.springframework.web.bind.annotation.GetMapping; import org.springframework.web.bind.annotation.RestController; @RestController public class ConfigClientController { @Value("${port}") private String port; @GetMapping("/getPort") public String getPort() { return "测试你访问的yml文件的端口是:【"+port+"】"; } }
启动类:ConfigClientApplication_5001
package com.javaxl.microserviceconfigclient5001; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; @SpringBootApplication public class MicroserviceConfigClient5001Application { public static void main(String[] args) { SpringApplication.run(MicroserviceConfigClient5001Application.class, args); } }
最后 本地hosts我们加给配置:
127.0.0.1 client-config.javaxl.com
我们启动项目:然后页面访问:
http://client-config.javaxl.com:5001/getPort
即可获取远程端口配置信息;
over......
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