需求案例：搭建一个电商平台项目，该平台包括用户服务、订单服务、通用工具模块等。

项目架构：

1. 用户服务：负责处理用户相关的逻辑，例如用户信息的管理、用户注册、登录等。
2. 订单服务：负责处理订单相关的逻辑，例如订单的创建、订单支付、退货、订单查看等。
3. 通用模块：负责存储其他服务需要通用工具类，其他服务依赖此模块。

服务依赖：

1. 用户服务 (1.0.1)
   • spring-context 6.0.6
   • spring-core 6.0.6
   • spring-beans 6.0.6
   • jackson-databind / jackson-core / jackson-annotations 2.15.0
2. 订单服务 (1.0.1)
   1. shiro-core 1.10.1
   2. spring-context 6.0.6
   3. spring-core 6.0.6
   4. spring-beans 6.0.6
3. 通用模块 (1.0.1)
   1. commons-io 2.11.0

1 创建父工程 maven-micro-shop

<?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>per.mjn</groupId>
    <artifactId>maven-micro-shop</artifactId>
    <version>1.0.1</version>
    <packaging>pom</packaging>
    <modules>
        <module>user-service</module>
        <module>order-service</module>
        <module>common-service</module>
    </modules>

    <properties>
        <spring.version>6.0.6</spring.version>
        <jackson.version>2.15.0</jackson.version>
        <shiro.version>1.10.1</shiro.version>
        <io.version>2.11.0</io.version>
        <maven.compiler.source>17</maven.compiler.source>
        <maven.compiler.target>17</maven.compiler.target>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    </properties>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework</groupId>
                <artifactId>spring-context</artifactId>
                <version>${spring.version}</version>
            </dependency>
            <dependency>
                <groupId>com.fasterxml.jackson.core</groupId>
                <artifactId>jackson-databind</artifactId>
                <version>${jackson.version}</version>
            </dependency>
            <dependency>
                <groupId>org.apache.shiro</groupId>
                <artifactId>shiro-core</artifactId>
                <version>${shiro.version}</version>
            </dependency>
            <dependency>
                <groupId>commons-io</groupId>
                <artifactId>commons-io</artifactId>
                <version>${io.version}</version>
            </dependency>
            <dependency>
                <groupId>per.mjn</groupId>
                <artifactId>common-service</artifactId>
                <version>1.0.1</version>
            </dependency>
        </dependencies>
    </dependencyManagement>
</project>

2 创建通用模块 common-service

<?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>per.mjn</groupId>
        <artifactId>maven-micro-shop</artifactId>
        <version>1.0.1</version>
    </parent>

    <artifactId>common-service</artifactId>

    <dependencies>
        <dependency>
            <groupId>commons-io</groupId>
            <artifactId>commons-io</artifactId>
        </dependency>
    </dependencies>
</project>

使用maven中的构建命令install，将这个项目放到maven本地仓库，以供其他两个模块（user-service 和 order-service）使用。

显示出BUILD SUCCESS表示构建成功。

3 创建用户模块 user-service

<?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>per.mjn</groupId>  
    <artifactId>maven-micro-shop</artifactId>  
    <version>1.0.1</version>
  </parent>  
  <artifactId>user-service</artifactId>
  <packaging>war</packaging>

  <dependencies>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-context</artifactId>
    </dependency>
    <dependency>
      <groupId>com.fasterxml.jackson.core</groupId>
      <artifactId>jackson-databind</artifactId>
    </dependency>

    <!-- 引入自己的工程 -->
    <dependency>
      <groupId>per.mjn</groupId>
      <artifactId>common-service</artifactId>
    </dependency>
  </dependencies>
</project>

4 创建订单模块 order-service

<?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>per.mjn</groupId>  
    <artifactId>maven-micro-shop</artifactId>  
    <version>1.0.1</version>
  </parent>  
  <artifactId>order-service</artifactId>
  <packaging>war</packaging>

  <dependencies>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-context</artifactId>
    </dependency>
    <dependency>
      <groupId>org.apache.shiro</groupId>
      <artifactId>shiro-core</artifactId>
    </dependency>

    <!-- 引入自己的工程 -->
    <dependency>
      <groupId>per.mjn</groupId>
      <artifactId>common-service</artifactId>
    </dependency>
  </dependencies>
</project>