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completed config
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#实现微服务的集中化配置
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创建一个`micro-weather-config-client` 作为配置服务器的客户端。
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##开发环境
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* Gradle 4.0
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* Spring Boot 2.0.0.M3
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* Spring Cloud Netflix Eureka Client Finchley.M2
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* Spring Cloud Config Client Finchley.M2
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##更改配置
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增加如下配置：
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```groovy
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dependencies {
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//...
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compile('org.springframework.cloud:spring-cloud-starter-netflix-eureka-client')
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compile('org.springframework.cloud:spring-cloud-starter-config')
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//...
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}
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```
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项目配置：
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```
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spring.application.name: micro-weather-config-client
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server.port=8089
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eureka.client.serviceUrl.defaultZone: http://localhost:8761/eureka/
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spring.cloud.config.profile=dev
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spring.cloud.config.uri= http://localhost:8888/
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```
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其中:
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* spring.cloud.config.uri ： 指向了配置服务器`micro-weather-config-server`的位置。
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##一个最简单的 Config Client
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主应用：
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```java
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@SpringBootApplication
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@EnableDiscoveryClient
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publicclassApplication {
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publicstaticvoidmain(String[]args) {
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SpringApplication.run(Application.class, args);
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}
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}
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```
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##如何测试
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在<https://github.com/waylau/spring-cloud-tutorial/tree/master/config> 我们放置了一个配置文件`micro-weather-config-client-dev.properties`，里面简单的放置了测试内容:
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```
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auther=waylau.com
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```
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![micro-weather-config-client](../../images/centralized-configuration/config-github.jpg)
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编写测试用例：
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```java
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@RunWith(SpringRunner.class)
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@SpringBootTest
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publicclassApplicationTests {
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@Value("${auther}")
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privateString auther;
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@Test
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publicvoidcontextLoads() {
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System.out.println(auther);
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}
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}
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```
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启动在之前章节中搭建的`micro-weather-eureka-server` 和`micro-weather-config-server` 两个项目。
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启动测试用例，如果一切正常，可以在控制台看到“waylau.com”字样，说明，我们拿到了`auther`在配置服务器中的内容。
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如果同时也启动了`micro-weather-config-client` 项目，则能在
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启动在之前章节中搭建的`micro-weather-eureka-server` 管理界面，看到这个服务的信息。
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![micro-weather-config-client](../../images/centralized-configuration/micro-weather-config-client.jpg)
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##源码
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本章节源码，见`micro-weather-config-client` 。

‎docs/centralized-configuration/config.md‎

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#如何集成 Config
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本章节，我们将创建一个`micro-weather-config-server` 作为配置服务器的服务端，创建一个`micro-weather-config-client` 作为配置服务器的客户端。
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本章节，我们将创建一个`micro-weather-config-server` 作为配置服务器的服务端。
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##开发环境
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* Gradle 4.0
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* Spring Boot 2.0.0.M3
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* Spring Cloud Netflix Eureka Client Finchley.M2
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* Spring Cloud Config Server Finchley.M2
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* Spring Cloud Config Client Finchley.M2
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##更改配置
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* spring.cloud.config.server.git.uri：配置Git仓库地址
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* spring.cloud.config.server.git.searchPaths：配置查找配置的路径
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##一个最简单的 Config Server
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主应用：
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```java
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@SpringBootApplication
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@EnableDiscoveryClient
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@EnableConfigServer
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publicclassApplication {
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publicstaticvoidmain(String[]args) {
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SpringApplication.run(Application.class, args);
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}
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}
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```
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在程序的入口Application类加上`@EnableConfigServer`注解开启配置服务器的功能。
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##测试
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启动应用
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在<https://github.com/waylau/spring-cloud-tutorial/tree/master/config> 我们放置了一个配置文件`micro-weather-config-client-dev.properties`，里面简单的放置了测试内容:
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```
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auther=waylau.com
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```
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启动应用，访问<http://localhost:8888/auther/dev>，应能看到如下输出内容，说明服务启动正常。
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```json
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{"name":"auther","profiles":["dev"],"label":null,"version":"00836f0fb49488bca170c8227e3ef13a5aff2d1a","state":null,"propertySources":[]}
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```
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其中，在配置中心的文件命名规则如下：
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```
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/{application}/{profile}[/{label}]
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/{application}-{profile}.yml
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/{label}/{application}-{profile}.yml
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/{application}-{profile}.properties
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/{label}/{application}-{profile}.properties
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```
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##源码
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本章节源码，见`micro-weather-config-server` 。
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.gradle
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/build/
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!gradle/wrapper/gradle-wrapper.jar
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### STS ###
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.apt_generated
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.classpath
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.factorypath
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.project
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.settings
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.springBeans
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### IntelliJ IDEA ###
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.idea
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*.iws
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*.iml
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*.ipr
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### NetBeans ###
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nbproject/private/
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build/
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nbbuild/
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dist/
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nbdist/
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.nb-gradle/
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/bin/
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buildscript {
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ext {
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springBootVersion='2.0.0.M3'
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}
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repositories {
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//mavenCentral()
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maven { url"https://repo.spring.io/snapshot" }
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maven { url"https://repo.spring.io/milestone" }
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maven { url"http://maven.aliyun.com/nexus/content/groups/public/" }
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}
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dependencies {
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classpath("org.springframework.boot:spring-boot-gradle-plugin:${springBootVersion}")
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}
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}
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applyplugin:'java'
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applyplugin:'eclipse'
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applyplugin:'org.springframework.boot'
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applyplugin:'io.spring.dependency-management'
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version='1.0.0'
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sourceCompatibility=1.8
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repositories {
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//mavenCentral()
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maven { url"https://repo.spring.io/snapshot" }
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maven { url"https://repo.spring.io/milestone" }
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maven { url"http://maven.aliyun.com/nexus/content/groups/public/" }
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}
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ext {
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springCloudVersion='Finchley.M2'
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}
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dependencies {
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compile('org.springframework.cloud:spring-cloud-starter-netflix-eureka-client')
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compile('org.springframework.cloud:spring-cloud-starter-config')
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testCompile('org.springframework.boot:spring-boot-starter-test')
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}
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dependencyManagement {
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imports {
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mavenBom"org.springframework.cloud:spring-cloud-dependencies:${springCloudVersion}"
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}
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}
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distributionBase=GRADLE_USER_HOME
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distributionPath=wrapper/dists
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zipStoreBase=GRADLE_USER_HOME
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zipStorePath=wrapper/dists
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#distributionUrl=https\://services.gradle.org/distributions/gradle-3.5.1-bin.zip
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distributionUrl=file\:/D:/software/webdev/java/gradle-4.0-all.zip

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