一、简介
在分布式系统中，由于服务数量巨多，为了方便服务配置文件统一管理，实时更新，所以需要分布式配置中心组件。
在Spring Cloud中，有分布式配置中心组件spring cloud config ，它支持配置服务放在配置服务的内存中（即本地），也支持放在远程Git仓库中。
在spring cloud config 组件中，分两个角色，一是config server，二是config client。
二、配置
2.1 Spring Cloud Config Server项目
1 pom.xml中导入Config Server需要的包
|
1 2 3 4 |
< dependency > < groupId >org.springframework.cloud</ groupId > < artifactId >spring-cloud-config-server</ artifactId > </ dependency > |
2 在Application类中添加@EnableConfigServer注解
|
1 2 3 4 5 6 7 8 9 10 11 |
package com.sunbufu; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.cloud.config.server.EnableConfigServer; @EnableConfigServer @SpringBootApplication public class ConfigServerApplication { public static void main(String[] args) { SpringApplication.run(ConfigServerApplication. class , args); } } |
3 修改配置文件application.yml，指定本地客户端配置文件的路径
|
1 2 3 4 5 6 7 8 |
spring: profiles: active: native cloud: config: server: native: searchLocations: F:/conf |
4 准备客户端配置文件
client-dev.yml文件的内容：
|
1 2 3 4 |
server: #设置成0，表示任意未被占用的端口 port: 8081 nickName: world |
2.2 Spring Cloud Config Client项目
1 pom.xml中导入Config Client需要的包（注意，此处跟Config Server的配置不同）
|
1 2 3 4 |
< dependency > < groupId >org.springframework.cloud</ groupId > < artifactId >spring-cloud-starter-config</ artifactId > </ dependency > |
2 在src/main/resources中，新建bootstrap.yml文件
bootstrap文件会在application文件之前加载，一般是不会变的。
|
1 2 3 4 5 6 7 8 |
spring: application: name: client cloud: config: uri: http://127.0.0.1:8888 profile: dev label: master |
资源文件映射如下：
|
1 2 3 4 5 |
/{application}/{profile}[/{label}] /{application}-{profile}.yml /{label}/{application}-{profile}.yml /{application}-{profile}.properties /{label}/{application}-{profile}.properties |
3 新建HelloController用来显示读取到的配置
|
1 2 3 4 5 6 7 8 9 10 11 12 13 |
package com.sunbufu.controller; import org.springframework.beans.factory.annotation.Value; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RestController; @RestController public class HelloController { @Value ( "${nickName}" ) private String nickName; @RequestMapping ( "/hello" ) public String hello() { return "hello " + nickName; } } |
三、总结
源码地址 ：https://github测试数据/sunbufu/sunbufu-cloud
总觉的使用svn或者git不如直接修改配置文件方便，特此记录下来。
spring cloud config本地读取配置文件
1、创建maven项目，引入spring boot 起步依赖
|
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 |
<? xml version = "1.0" encoding = "UTF-8" ?> < project xmlns = "http://maven.apache.org/POM/4.0.0" xmlns:xsi = "http://HdhCmsTestw3.org/2001/XMLSchema-instance" xsi:schemaLocation = "http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd" > < modelVersion >4.0.0</ modelVersion > < parent > < groupId >org.springframework.boot</ groupId > < artifactId >spring-boot-starter-parent</ artifactId > < version >2.1.7.RELEASE</ version > < relativePath /> <!-- lookup parent from repository --> </ parent > < groupId >com.wxz</ groupId > < artifactId >cloud-config-demo3</ artifactId > < version >0.0.1-SNAPSHOT</ version > < name >cloud-config-demo3</ name > < description >Demo project for Spring Boot</ description > < properties > < java.version >1.8</ java.version > </ properties > < dependencies > < dependency > < groupId >org.springframework.boot</ groupId > < artifactId >spring-boot-starter</ artifactId > </ dependency > < dependency > < groupId >org.springframework.boot</ groupId > < artifactId >spring-boot-starter-test</ artifactId > < scope >test</ scope > </ dependency > </ dependencies > < dependencyManagement > < dependencies > < dependency > < groupId >org.springframework.cloud</ groupId > < artifactId >spring-cloud-dependencies</ artifactId > < version >${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 > |
新建config-server 模块，引入依赖
|
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 |
<? xml version = "1.0" encoding = "UTF-8" ?> < project xmlns = "http://maven.apache.org/POM/4.0.0" xmlns:xsi = "http://HdhCmsTestw3.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.wxz</ groupId > < artifactId >cloud-config-demo3</ artifactId > < version >0.0.1-SNAPSHOT</ version > < relativePath /> <!-- lookup parent from repository --> </ parent > < groupId >com.wxz</ groupId > < artifactId >config-server</ artifactId > < version >0.0.1-SNAPSHOT</ version > < name >config-server</ name > < description >Demo project for Spring Boot</ description > < 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.cloud</ groupId > < artifactId >spring-cloud-config-server</ artifactId > < version >2.1.2.RELEASE</ version > </ dependency > < dependency > < groupId >org.springframework.boot</ groupId > < artifactId >spring-boot-starter-test</ artifactId > < scope >test</ scope > </ dependency > </ dependencies > < build > < plugins > < plugin > < groupId >org.springframework.boot</ groupId > < artifactId >spring-boot-maven-plugin</ artifactId > </ plugin > </ plugins > </ build > </ project > |
2、配置文件：
|
1 2 3 4 5 6 7 8 9 10 11 12 |
spring: cloud: config: server: native: search-locations: classpath:/shared profiles: active: native application: name: config-server server: port: 8769 |
在resources下新建目录shared，里面新建文件config-client-dev
|
1 2 3 |
server: port: 8762 foo: foo version 1 |
在启动类添加
|
1 |
@EnableConfigServer |
新建config-client模块
|
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 |
<? xml version = "1.0" encoding = "UTF-8" ?> < project xmlns = "http://maven.apache.org/POM/4.0.0" xmlns:xsi = "http://HdhCmsTestw3.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.wxz</ groupId > < artifactId >cloud-config-demo3</ artifactId > < version >0.0.1-SNAPSHOT</ version > < relativePath /> <!-- lookup parent from repository --> </ parent > < groupId >com.wxz</ groupId > < artifactId >config-client</ artifactId > < version >0.0.1-SNAPSHOT</ version > < name >config-client</ name > < description >Demo project for Spring Boot</ description > < properties > < 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 > < version >2.1.2.RELEASE</ version > </ dependency > < dependency > < groupId >org.springframework.boot</ groupId > < artifactId >spring-boot-starter-test</ artifactId > < scope >test</ scope > </ dependency > </ dependencies > < build > < plugins > < plugin > < groupId >org.springframework.boot</ groupId > < artifactId >spring-boot-maven-plugin</ artifactId > </ plugin > </ plugins > </ build > </ project > |
新建配置文件bootstrap.yml(bootstrap比application具有优先的读取顺序)
|
1 2 3 4 5 6 7 8 9 |
spring: cloud: config: uri: http://localhost:8769 fail-fast: true application: name: config-client profiles: active: dev |
新建一个controller进行测试：
|
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 |
package com.wxz.configclient.controller; import org.springframework.beans.factory.annotation.Value; import org.springframework.web.bind.annotation.GetMapping; import org.springframework.web.bind.annotation.RestController; /** * @author Wangxingze * @date 2019-08-26 12:58 */ @RestController public class Test { @Value ( "${foo}" ) public String foo; @GetMapping ( "/t" ) public String t(){ return foo; } } |
依次启动server client,启动时可以看到读取了配置文件和启动黛安克，访问：
注意：spring boot 和cloud的版本以及config依赖的版本
|
1 2 3 4 |
< groupId >org.springframework.boot</ groupId > < artifactId >spring-boot-starter-parent</ artifactId > < version >2.1.7.RELEASE</ version > < relativePath /> <!-- lookup parent from repository --> |
我这里好像没有指定spring cloud 的版本呀
config的相关依赖使用：<version>2.1.2.RELEASE</version>
以上为个人经验，希望能给大家一个参考，也希望大家多多支持。
原文链接：https://blog.csdn.net/sunbufu/article/details/79291746
查看更多关于Spring Cloud Config 使用本地配置文件方式的详细内容...