配置命名的约定规则
/order-dev.yml（/文件名-环境名.文件后缀）
/dev/order-dev.yml（/分支名/文件名-环境名.文件后缀）
/{name}-{profiles}.yml
/{label}/{name}-{profiles}.yml
name 服务名
profile 环境
label 分支（默认不写就是“master”主分支）
Config Server
<?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.imooc</groupId> <artifactId>config</artifactId> <version>0.0.1-SNAPSHOT</version> <packaging>jar</packaging> <name>config</name> <description>Demo project for Spring Boot</description> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>2.0.0.BUILD-SNAPSHOT</version> <relativePath/> <!-- lookup parent from repository --> </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.BUILD-SNAPSHOT</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-client</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-config-monitor</artifactId> </dependency> </dependencies> <dependencyManagement> <dependencies> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-dependencies</artifactId> <version>${spring-cloud.version}</version> <type>pom</type> <scope>import</scope> </dependency> </dependencies> </dependencyManagement> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins> </build> <repositories> <repository> <id>spring-snapshots</id> <name>Spring Snapshots</name> <url>https://repo.spring.io/snapshot</url> <snapshots> <enabled>true</enabled> </snapshots> </repository> <repository> <id>spring-milestones</id> <name>Spring Milestones</name> <url>https://repo.spring.io/milestone</url> <snapshots> <enabled>false</enabled> </snapshots> </repository> </repositories> <pluginRepositories> <pluginRepository> <id>spring-snapshots</id> <name>Spring Snapshots</name> <url>https://repo.spring.io/snapshot</url> <snapshots> <enabled>true</enabled> </snapshots> </pluginRepository> <pluginRepository> <id>spring-milestones</id> <name>Spring Milestones</name> <url>https://repo.spring.io/milestone</url> <snapshots> <enabled>false</enabled> </snapshots> </pluginRepository> </pluginRepositories> </project>
package com.imooc.config; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.cloud.client.discovery.EnableDiscoveryClient; import org.springframework.cloud.config.server.EnableConfigServer; @SpringBootApplication @EnableDiscoveryClient @EnableConfigServer public class ConfigApplication { public static void main(String[] args) { SpringApplication.run(ConfigApplication.class, args); } }
spring: application: name: config cloud: config: server: git: uri: https://gitee.com/SpringCloud_Sell/config-repo username: lly835@163.com password: T#27h*E$cg@%}j basedir: /Users/admin/code/myProjects/java/imooc/SpringCloud_Sell/config/basedir eureka: client: service-url: defaultZone: http://localhost:8761/eureka/
Ps：然后配置中心服务器也是可以高可用的。只是不像eureka那样需要互相注册了，只要端口改一下要多少启动多少就可以了，然后客户端访问配置中心的服务也是负载均衡效果的。如图这个是客户端里的配置和日志，配置这里 CONFIG 自带高可用，也就是上面的 Config Server，然而日志里，光标这个位置多启动几次发现服务地址会不一样（即负载均衡）。
Config Client（e.g. Order）
order server
<dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-config-client</artifactId> </dependency>
# bootstrap.yml spring: application: name: order cloud: config: discovery: enabled: true service-id: CONFIG profile: test eureka: client: service-url: defaultZone: http://localhost:8761/eureka/
（1）加载顺序
bootstrap.yml 先加载
application.yml 后加载
使用spring cloud config时需要先从云端拿到到配置参数，加载到ApplicationContext内，否则启动会报错，所以要在bootstrap.yml中配置spring cloud config
（2）使用spring cloud config
在bootstrap.yml中先配置好spring.application.name、spring.cloud.config.server.git.uri（这里是通过 config client 到 config server 里的 git.uri）
- 问：这里高亮部分为啥要写在这，不是应该写在git配置上的嘛？
- 答：顺序：先注册到服务中心，通过服务中心发现config，发现配置文件。如果说没有配服务中心默认找8761的，如果有则能找到，没有的话就回出问题了。如果服务中心不是8761的则要写在bootstrap里面。
package com.imooc.order.controller; import org.springframework.beans.factory.annotation.Value; import org.springframework.cloud.context.config.annotation.RefreshScope; import org.springframework.web.bind.annotation.GetMapping; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RestController; @RestController @RequestMapping("/env") public class EnvController { @Value("${env}") private String env; @GetMapping("/print") public String print() { return env; } }
- 这里是拿来做测试用，看是否可以打通！
