基础概念

1. 官方文档（官网介绍较为详细，不再赘述）

https://www.apolloconfig.com/#/zh/design/apollo-introduction

SpringBoot集成

一.官网给予了基础的Quick Start，可参考学习入门 ，（win平台启动可以使用git客户端执行sh脚本）

$ sh ./demo.sh start
Windows new JAVA_HOME is: /d/DevProgram/Java/jdk
==== starting service ====
Service logging file is ./service/apollo-service.log
Started [1121]
Waiting for config service startup...

看到Started [1121]即表示成功！
二.这里给出在springboot工程中如何使用的简单demo
1.首先参考Quick Start文档，搭建基础环境，包括 Apollo config应用和数据库等
2.新建springboot 工程，导入web依赖和Apollo client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 http://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>2.0.1.RELEASE</version>
    </parent>
    <groupId>com.ggq</groupId>
    <artifactId>springboot-apollo</artifactId>
    <version>1.0-SNAPSHOT</version>
    <dependencies>
        <!-- web功能起步依赖-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <!-- apollo 客户端依赖-->
        <dependency>
            <groupId>com.ctrip.framework.apollo</groupId>
            <artifactId>apollo-client</artifactId>
            <version>1.3.0</version>
        </dependency>
    </dependencies>

</project>

2.主启动类

package com.ggq;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

import com.ctrip.framework.apollo.spring.annotation.EnableApolloConfig;

@SpringBootApplication
@EnableApolloConfig //此处开启apollo配置
public class ApolloClientStart {
    public static void main(String[] args) {
        SpringApplication.run(ApolloClientStart.class,args);
    }
}

3.构建基础配置文件，指定apollo配置中心地址和应用本身id等

server:
  port: 8081

app:
  id: springboot-apollo
apollo:
  meta: http://127.0.0.1:8080
  bootstrap:
    enabled: true
    eagerLoad:
      enabled: true

4.测试类

package com.ggq.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 TestController {

    @Value( "${name}" )
    private String name;

    @RequestMapping("/name")
    public String ReadName() {
        return "我的名字是："+this.name;
    }

}

访问http://localhost:8081/name，可以得到我的名字是：张三 ，重新在apollo中配置name值无需重启，再次请求
http://localhost:8081/name，可得到我的名字是：李四
​