配置服务器
从中央服务器提供配置
配置服务器 是 CoddyKit 上的免费 Spring Boot 4 Microservices & REST APIs 课时。 这是第 1 节课，共 4 节。 你可以在下方免费阅读本课时的完整内容 — 然后在浏览器中使用内置代码编辑器和全天候 AI 导师进行实践。 这是 Spring Boot 4 Microservices & REST APIs 学习路径的一部分，你的进度在网页和 CoddyKit 应用中同步。 Spring Boot 4 Microservices & REST APIs 课程共包含 4 节课。
本课时的部分内容尚未翻译，以英文显示。
The configuration problem
In a microservices system, many services each need configuration. Duplicating application.yml everywhere is error-prone. Spring Cloud Config centralizes configuration in one server.
What the Config Server does
The Config Server is a small Spring Boot app that serves configuration to client services over HTTP, typically backed by a Git repository.
- One place to view and change config
- Versioned, auditable changes
Adding the server dependency
Create a new app and add spring-cloud-config-server.
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-config-server</artifactId>
</dependency>@EnableConfigServer
Annotate the main class with @EnableConfigServer to turn the app into a Config Server.
@SpringBootApplication
@EnableConfigServer
public class ConfigServerApp {
public static void main(String[] args) {
SpringApplication.run(ConfigServerApp.class, args);
}
}Pointing at a backend
The server needs a backend to read config from. The most common is a Git repo, set with spring.cloud.config.server.git.uri.
# application.yml of the server
spring:
cloud:
config:
server:
git:
uri: https://github.com/acme/config-repoRunning on a known port
Config Servers conventionally run on port 8888 so clients can find them with default settings.
server:
port: 8888How config is addressed
The server resolves config by application name and profile. A client named orders with profile prod maps to files like orders-prod.yml in the repo.
The server HTTP API
You can query the server directly. The path is /{application}/{profile} and it returns the merged properties as JSON.
// GET http://localhost:8888/orders/prod
// returns merged config for app=orders, profile=prodNative (filesystem) backend
For local development you can use a filesystem backend instead of Git via the native profile - convenient but not versioned.
spring:
profiles:
active: native
cloud:
config:
server:
native:
search-locations: file:./configSecuring the server
Config can contain secrets, so protect the server with HTTP Basic auth (Spring Security) and run it behind your private network. Clients then send credentials.
Encryption support
The server can store encrypted values (prefixed {cipher}) and decrypt them on the fly, so secrets are never stored in plaintext in the repo - provided a key is configured.
Quick Check
Check your Config Server fundamentals.
Recap
You stood up a Config Server:
- It centralizes config and serves it over HTTP
@EnableConfigServer+ a Git (or native) backend- Runs on port 8888 by convention
- Resolves config by application name and profile
常见问题解答
「配置服务器」课时是免费的吗？
是的 — 「配置服务器」的完整文本可在网页上免费阅读。要进行交互式练习（内置代码编辑器和全天候 AI 导师）并解锁 Spring Boot 4 Microservices & REST APIs 课程的其余内容，请升级到 CoddyKit PRO。 Spring Boot 4 Microservices & REST APIs 课程共包含 4 节课。
「配置服务器」这节课中我会学到什么？
从中央服务器提供配置 你通过在浏览器中直接运行的动手代码来练习 Spring Boot 4 Microservices & REST APIs，全天候 AI 导师会在你学习这节课的过程中回答你的问题。
学习 Spring Boot 4 Microservices & REST APIs 需要有经验吗？
无需任何先前经验。CoddyKit 上的 Spring Boot 4 Microservices & REST APIs 课程适合初学者到高级学习者，你可以从这里开始或从头开始，按照自己的节奏学习。 这是第 1 节课，共 4 节。
「配置服务器」课时需要多长时间？
大多数 CoddyKit 课程大约需要 5–10 分钟。每节课都很精短且互动，所以你能稳步进步，并在网页和应用中从离开的地方继续。
我能在这节 Spring Boot 4 Microservices & REST APIs 课中编写并运行代码吗？
能。每节 Spring Boot 4 Microservices & REST APIs 课都包含内置代码编辑器，你可以在浏览器中直接编写并运行真实代码，并获得即时 AI 反馈 — 无需本地设置。