系列文章目录
文章目录
- 系列文章目录
- 前言
- 一、本文要点
- 二、开发环境
- 三、安装apollo服务端
- 四、修改pom.xml文件
- 五、修改配置文件
- 六、修改项目代码
- 七、运行一下
- 八、小结
前言
Apollo（阿波罗）是携程框架部门研发的开源配置管理中心，能够集中化管理应用不同环境、不同集群的配置，配置修改后能够实时推送到应用端，并且具备规范的权限、流程治理等特性。使用配置中心，可以更加集中化方便管理项目的配置，脱敏安全问题，热更新等好处。
一、本文要点
接上文，我们已经把SpringBoot整合mybatis+Hikari+es+redis+kafka+dubbo了，基本上已经把常用的组件整合完毕，本文将介绍整合apollo配置中心。系列文章完整目录
- Apollo 配置中心
- springboot 整合 apollo client
- springboot + mybatis + Hikari + elasticsearch + redis + dubbo + apollo
二、开发环境
- jdk 1.8
- maven 3.6.2
- springboot 2.4.3
- apollo 1.8.1
- apollo cleint 1.8.0
- idea 2020
三、安装apollo服务端
参考：《搭建大型分布式服务（十五）Docker搭建开发环境安装Apollo》
四、修改pom.xml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>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.4.3</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.mmc.lesson</groupId>
<artifactId>apollo-demo</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>apollo-demo</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.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<!-- https://mvnrepository.com/artifact/com.ctrip.framework.apollo/apollo-client -->
<dependency>
<groupId>com.ctrip.framework.apollo</groupId>
<artifactId>apollo-client</artifactId>
<version>1.8.0</version>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.18.20</version>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>五、修改配置文件
修改application-dev.properties文件，同理，后面发布到测试、正式环境的话，修改对应的配置文件。这里增加Apollo的配置。
#################### APOLLO ####################
app.id=member-config
apollo.meta=http://9.135.xx.xxx:8080 # 搭建apollo的eureka地址
apollo.bootstrap.enabled=true
apollo.bootstrap.eagerLoad.enabled=true
logging.level.root=debug # 跟踪一下apollo日志六、修改项目代码
1、修改ApolloDemoApplication，@EnableApolloConfig启用配置中心。
@EnableApolloConfig
@SpringBootApplication
public class ApolloDemoApplication {
public static void main(String[] args) {
SpringApplication.run(ApolloDemoApplication.class, args);
}
}2、增加IndexController，读取apollo配置。
@RequestMapping("/api")
@RestController
public class IndexController {
@Value("${member.version}")
private String version;
@GetMapping("/member/version")
public String version() {
return version;
}
}3、在apollo开发环境增加member.version配置项。
七、运行一下
1、运行项目，观察启动日志，可以看到已经能正常连接apollo了。
2021-05-04 17:45:41.937 DEBUG 3443 --- [ngPollService-1] c.c.f.a.i.RemoteConfigLongPollService : Long polling from http://9.135.xxx.xxx:8080/notifications/v2?cluster=default&appId=member-config&ip=10.43.30.35¬ifications=%5B%7B%22namespaceName%22%3A%22application%22%2C%22notificationId%22%3A-1%7D%5D
2021-05-04 17:45:41.938 DEBUG 3443 --- [ngPollService-1] s.n.www.protocol.http.HttpURLConnection : sun.net.www.MessageHeader@4210fcbe5 pairs: {GET /notifications/v2?cluster=default&appId=member-config&ip=10.43.30.35¬ifications=%5B%7B%22namespaceName%22%3A%22application%22%2C%22notificationId%22%3A-1%7D%5D HTTP/1.1: null}{User-Agent: Java/1.8.0_221}{Host: 9.135.xxx.xxx:8080}{Accept: text/html, image/gif, image/jpeg, *; q=.2, */*; q=.2}{Connection: keep-alive}
2021-05-04 17:45:41.951 DEBUG 3443 --- [ngPollService-1] s.n.www.protocol.http.HttpURLConnection : sun.net.www.MessageHeader@36a60b1e16 pairs: {null: HTTP/1.1 200 OK}{x-proxy-by: SmartProxy (IDC-CDN-Gate)}{X-Content-Type-Options: nosniff}{X-XSS-Protection: 1; mode=block}{Cache-Control: no-cache, no-store, max-age=0, must-revalidate}{Pragma: no-cache}{Expires: 0}{X-Frame-Options: SAMEORIGIN}{Content-Type: application/json;charset=UTF-8}{Transfer-Encoding: chunked}{Date: Tue, 04 May 2021 09:45:42 GMT}{Keep-Alive: timeout=60}{Connection: keep-alive}{x-forwarded-for: 9.135.xxx.xxx}{set-cookie: x_host_key=17936c4ddba-9fefb9fb9a64eaca5b786ac29a6405288daca4f6; path=/; HttpOnly}{x-rio-seq: ko9ujah0-166548695}
2021-05-04 17:45:41.952 DEBUG 3443 --- [ngPollService-1] c.c.f.a.i.RemoteConfigLongPollService : Long polling response: 200, url: http://9.135.xxx.xxx:8080/notifications/v2?cluster=default&appId=member-config&ip=10.43.30.35¬ifications=%5B%7B%22namespaceName%22%3A%22application%22%2C%22notificationId%22%3A-1%7D%5D2、访问一下localhost:8080/api/member/version。
3、修改apollo配置，把member.version改为2.1并发布配置，注意不用重启项目。
4、观察项目日志，可以看到应用立刻感知到配置被修改，已经重新更新了。
2021-05-04 17:52:58.531 DEBUG 3443 --- [figRepository-1] c.c.f.a.i.RemoteConfigRepository : Loaded config for application: ApolloConfig{appId='member-config', cluster='default', namespaceName='application', configurations={member.version=2.1, tips=hello javaer.}, releaseKey='20210504175258-6c23026d6e0625ab'}
2021-05-04 17:52:58.532 DEBUG 3443 --- [figRepository-1] c.c.f.a.i.RemoteConfigRepository : Remote Config refreshed!
2021-05-04 17:52:58.537 DEBUG 3443 --- [Apollo-Config-1] o.s.c.e.PropertySourcesPropertyResolver : Found key 'member.version' in PropertySource 'ApolloBootstrapPropertySources' with value of type String
2021-05-04 17:52:58.538 DEBUG 3443 --- [Apollo-Config-1] o.s.c.e.PropertySourcesPropertyResolver : Found key 'member.version' in PropertySource 'environmentProperties' with value of type String
2021-05-04 17:52:58.538 INFO 3443 --- [Apollo-Config-1] c.f.a.s.p.AutoUpdateConfigChangeListener : Auto update apollo changed value successfully, new value: 2.1, key: member.version,5、重新访问一下localhost:8080/api/member/version，配置已更新。
八、小结
这里只是简单介绍如何整合apollo，更加详细的用法请关注后续文章，例如怎样把redis、kafka、es、dubbo等配置交由apollo托管。下一篇《搭建大型分布式服务（十七）SpringBoot项目配置交由Apollo托管》