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Docker Compose部署Spring Cloud 微服务系统

news 2025/6/19 5:14:43

我们将为你的环境（CentOS + Docker Compose + Maven + JDK 17）生成并部署一个基础的 Spring Cloud 微服务系统。整个项目结构将包括以下组件：

✅ 项目模块结构（Spring Cloud Alibaba 示例）

springcloud-demo/
├── eureka-server/       # 注册中心
├── config-server/       # 配置中心（可选）
├── gateway/             # 网关服务
├── service-user/        # 用户微服务
├── service-order/       # 订单微服务
└── docker-compose.yml   # 一键部署入口

一、构建服务模块

我们先从最核心的 eureka-server 开始。以下是所需关键文件：

1. `eureka-server/pom.xml`

<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.example</groupId><artifactId>eureka-server</artifactId><version>0.0.1-SNAPSHOT</version><packaging>jar</packaging><name>eureka-server</name><description>Eureka Server for Spring Cloud</description><parent><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-parent</artifactId><version>3.1.5</version><relativePath/> <!-- lookup parent from repository --></parent><properties><java.version>17</java.version><spring-cloud.version>2022.0.5</spring-cloud.version></properties><dependencies><dependency><groupId>org.springframework.cloud</groupId><artifactId>spring-cloud-starter-netflix-eureka-server</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</artifactId></dependency></dependencies><dependencyManagement><dependencies><dependency><groupId>org.springframework.cloud</groupId><artifactId>spring-cloud-dependencies</artifactId><version>${spring-cloud.version}</version><type>pom</type><scope>import</scope></dependency></dependencies></dependencyManagement><build><plugins><plugin><groupId>org.springframework.boot</groupId><artifactId>spring-boot-maven-plugin</artifactId></plugin></plugins></build>
</project>

2. `eureka-server/src/main/resources/application.yml`

server:port: 8761
eureka:client:register-with-eureka: falsefetch-registry: false

3. `EurekaServerApplication.java`

package com.example.eureka;import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.eureka.server.EnableEurekaServer;@SpringBootApplication
@EnableEurekaServer
public class EurekaServerApplication {public static void main(String[] args) {SpringApplication.run(EurekaServerApplication.class, args);}
}

4. `Dockerfile`

FROM openjdk:17
COPY target/*.jar app.jar
ENTRYPOINT ["java", "-jar", "/app.jar"]

二、构建其他模块（如 `gateway`、`service-user` 等）

1. `gateway/pom.xml`

<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.example</groupId><artifactId>gateway</artifactId><version>0.0.1-SNAPSHOT</version><name>gateway</name><description>Spring Cloud Gateway</description><packaging>jar</packaging><parent><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-parent</artifactId><version>3.1.5</version></parent><properties><java.version>17</java.version><spring-cloud.version>2022.0.5</spring-cloud.version></properties><dependencies><dependency><groupId>org.springframework.cloud</groupId><artifactId>spring-cloud-starter-gateway</artifactId></dependency><dependency><groupId>org.springframework.cloud</groupId><artifactId>spring-cloud-starter-netflix-eureka-client</artifactId></dependency></dependencies><dependencyManagement><dependencies><dependency><groupId>org.springframework.cloud</groupId><artifactId>spring-cloud-dependencies</artifactId><version>${spring-cloud.version}</version><type>pom</type><scope>import</scope></dependency></dependencies></dependencyManagement><build><plugins><plugin><groupId>org.springframework.boot</groupId><artifactId>spring-boot-maven-plugin</artifactId></plugin></plugins></build>
</project>

2. `gateway/src/main/resources/application.yml`

server:port: 8080
spring:cloud:gateway:routes: []
eureka:client:service-url:defaultZone: http://eureka-server:8761/eureka

3. `GatewayApplication.java`

package com.example.gateway;import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;@SpringBootApplication
public class GatewayApplication {public static void main(String[] args) {SpringApplication.run(GatewayApplication.class, args);}
}

4. `Dockerfile`

FROM openjdk:17
COPY target/*.jar app.jar
ENTRYPOINT ["java", "-jar", "/app.jar"]

可以根据上面结构复用类似配置，接入 Eureka，并配置简单 REST Controller + 注册信息。

三、`docker-compose.yml` 示例（部署所有服务）

version: '3.8'
services:eureka-server:build: ./eureka-serverports:- "8761:8761"gateway:build: ./gatewayports:- "8080:8080"depends_on:- eureka-serveruser-service:build: ./service-userports:- "8081:8081"depends_on:- eureka-servernetworks:default:name: springcloud-net

四、部署步骤

上传项目至 CentOS（如：/root/springcloud-demo）
构建服务

cd /root/springcloud-demo mvn clean package -DskipTests

进入项目解压目录，依次执行以下命令：

cd eureka-server

mvn clean package -DskipTests

cd ../gateway

mvn clean package -DskipTests

cd ../user-service

mvn clean package -DskipTests

cd ../order-service

mvn clean package -DskipTests

cd ../auth-service

mvn clean package -DskipTests