spring cloud config 入门

Spring Cloud Config配置中心实战

最新推荐文章于 2025-09-12 18:08:49 发布

转载最新推荐文章于 2025-09-12 18:08:49 发布 · 44 阅读

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#java #git

本文详细介绍Spring Cloud Config配置中心的搭建与使用方法，包括服务端(config-server)和客户端(config-client)的具体实现过程，以及如何通过配置中心统一管理微服务架构下的应用配置。

简介

Spring cloud config 分为两部分 server client

config-server 配置服务端，服务管理配置信息
config-client 客户端，客户端调用server端暴露接口获取配置信息

config-server

创建config-server

首先创建config-server工程.

文件结构：

├── config-server.iml
├── pom.xml
└── src
    ├── main
    │   ├── java
    │   │   └── com
    │   │       └── lkl
    │   │           └── springcloud
    │   │               └── config
    │   │                   └── server
    │   │                       └── Application.java
    │   └── resources
    │       ├── application.properties │ └── bootstrap.properties └── test └── java

pom.xml内容：

<?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>1.2.3.RELEASE</version> <relativePath /> <!-- lookup parent from repository --> </parent> <groupId>com.lkl.springcloud</groupId> <artifactId>spring-cloud-config-server</artifactId> <version>1.0-SNAPSHOT</version> <dependencyManagement> <dependencies> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-config</artifactId> <version>1.0.4.RELEASE</version> <type>pom</type> <scope>import</scope> </dependency> </dependencies> </dependencyManagement> <dependencies> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-config</artifactId> </dependency> <!--表示为web工程--> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <!--暴露各种指标--> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-actuator</artifactId> </dependency> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-config-server</artifactId> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins> </build> </project>

创建启动类
Application.Java

package com.lkl.springcloud.config.server;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.cloud.config.server.EnableConfigServer;
import org.springframework.context.annotation.Configuration; import org.springframework.web.bind.annotation.RestController; /** * Created by liaokailin on 16/4/28. */ @Configuration @EnableAutoConfiguration @RestController @EnableConfigServer public class Application { public static void main(String[] args) { SpringApplication.run(Application.class, args); } }

其中 @EnableConfigServer为关键注解

在resources文件下创建application.properties

server.port=8888

application:表示应用名称,在client中通过spring.config.name配置
profile:表示获取指定环境下配置，例如开发环境、测试环境、生产环境默认值default，实际开发中可以是 dev、test、demo、production等
label: git标签，默认值master

如果application名称为foo，则可以采用如下方式访问：

http://localhost:8888/foo/default
http://localhost:8888/foo/development

只要是按照上面的规则配置即可访问.

config-client

创建config-client

目录结构如下：

├── pom.xml
├── spring-cloud-config-client.iml
└── src
    ├── main
    │   ├── java
    │   │   └── com
    │   │       └── lkl
    │   │           └── springcloud
    │   │               └── config
    │   │                   └── client
    │   │                       └── Application.java
    │   └── resources
    │       └── bootstrap.yml └── test └── java

pom.xml

<?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> <groupId>com.lkl.springcloud</groupId> <artifactId>spring-cloud-config-client</artifactId> <version>1.0-SNAPSHOT</version> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>1.2.3.RELEASE</version> <relativePath /> <!-- lookup parent from repository --> </parent> <dependencyManagement> <dependencies> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-parent</artifactId> <version>1.0.1.RELEASE</version> <type>pom</type> <scope>import</scope> </dependency> </dependencies> </dependencyManagement> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-config-client</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-actuator</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> </dependencies> <repositories> <repository> <id>spring-milestones</id> <name>Spring Milestones</name> <url>http://repo.spring.io/milestone</url> <snapshots> <enabled>false</enabled> </snapshots> </repository> </repositories> <pluginRepositories> <pluginRepository> <id>spring-milestones</id> <name>Spring Milestones</name> <url>http://repo.spring.io/milestone</url> <snapshots> <enabled>false</enabled> </snapshots> </pluginRepository> </pluginRepositories> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins> </build> </project>

创建启动类Application.java

package com.lkl.springcloud.config.client;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RestController; /** * Created by liaokailin on 16/4/28. */ @SpringBootApplication @RestController public class Application { @Value("${name:World!}") String bar; @RequestMapping("/") String hello() { return "Hello " + bar + "!"; } public static void main(String[] args) { SpringApplication.run(Application.class, args); } }

创建bootstrap.properties文件，其内容如下：

spring.application.name: foo
spring.cloud.config.env:default
spring.cloud.config.label:master spring.cloud.config.uri:http://localhost:8888

其中 spring.application.name 为应用名称，spring.cloud.config.uri 配置config-server暴露的获取配置接口,其默认值为http://localhost:8888
第二三项配置在前面已经提到过，配置的都为默认值，因此bootstrap.properties只需要配置应用名即可.

运行config-client

访问 http://localhost 得到 `Hello liaokailin` 获取到git上的配置信息
访问 http://localhost/env 得到所有的配置信息，可以发现获取配置信息成功.

{
profiles: [ ],
configService:https://github.com/liaokailin/config-repo/foo.properties: {
name: "liaokailin", foo: "devoxxfr" }, configService:https://github.com/liaokailin/config-repo/application.yml: { info.description: "Spring Cloud Samples--lkl", info.url: "https://github.com/spring-cloud-samples", eureka.client.serviceUrl.defaultZone: "http://localhost:8761/eureka/" }, commandLineArgs: { spring.output.ansi.enabled: "always" }, servletContextInitParams: { }, ...}