Spring Cloud Config 使用本地配置文件方式

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

<dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-config-server</artifactId></dependency>

2 在Application类中添加@EnableConfigServer注解

package com.sunbufu;import org.springframework.boot.SpringApplication;import org.springframework.boot.autoconfigure.SpringBootApplication;import org.springframework.cloud.config.server.EnableConfigServer;@EnableConfigServer@SpringBootApplicationpublic 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

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：

server: #设置成0，表示任意未被占用的端口 port: 8081nickName: world2.2 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）

<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。

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：

/{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

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;@RestControllerpublic class HelloController { @Value('${nickName}') private String nickName; @RequestMapping('/hello') public String hello() {return 'hello ' + nickName; }}

三、总结

源码地址 ：https://github.com/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

<?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>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

<?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.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：

spring: cloud: config: server:native: search-locations: classpath:/shared profiles: active: native application: name: config-serverserver: port: 8769

在resources下新建目录shared，里面新建文件config-client-dev

server: port: 8762foo: foo version 1

在启动类添加

@EnableConfigServer

新建config-client模块

<?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.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)

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：

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 */@RestControllerpublic 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

<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好吧啦网。