一、创建Maven聚合工程

1.聚合工程结构

 2.Maven聚合工程创建

2.1构建父工程fmmall

2.1.1创建一个maven工程，packing设置为pom，父工程继承 spring-boot-starter-parent

<?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>
    <!-- spring-boot-starter-parent -->
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.4.4</version>
        <relativePath/>
    </parent>
    <groupId>com.linlin</groupId>
    <artifactId>fmmall</artifactId>
    <packaging>pom</packaging>
    <version>2.0.1</version>


    <properties>
        <maven.compiler.source>8</maven.compiler.source>
        <maven.compiler.target>8</maven.compiler.target>
    </properties>

</project>

2.1.2在fmmall项目下创建common工程（同样也是maven工程），packing设置为jar

<?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">
    <parent>
        <artifactId>fmmall</artifactId>
        <groupId>com.linlin</groupId>
        <version>2.0.1</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>common</artifactId>
    <packaging>jar</packaging>

    <properties>
        <maven.compiler.source>8</maven.compiler.source>
        <maven.compiler.target>8</maven.compiler.target>
    </properties>

</project>

2.1.3在fmmall项目下分别继续创建beans工程，mapper工程，service工程，步骤和创建common工程相同，packing设置为jar

2.1.4在fmmall项目下创建api工程（SpringBoot工程），修改api工程的pom.xml，使其继承父工程fmmall，同时删除自己的groupId和version

<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <artifactId>fmmall</artifactId>
        <groupId>com.linlin</groupId>
        <version>2.0.1</version>
    </parent>

    <artifactId>api</artifactId>

    <properties>
        <java.version>1.8</java.version>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <spring-boot.version>2.4.4</spring-boot.version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>com.linlin</groupId>
            <artifactId>service</artifactId>
            <version>2.0.1</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>
    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-dependencies</artifactId>
                <version>${spring-boot.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.8.1</version>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                    <encoding>UTF-8</encoding>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <version>2.4.2</version>
                <configuration>
                    <mainClass>com.linlin.api.ApiApplication</mainClass>
                    <skip>true</skip>
                </configuration>
                <executions>
                    <execution>
                        <id>repackage</id>
                        <goals>
                            <goal>repackage</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>

</project>

注：创建springboot项目时，我设置的服务器地址为：https://start.aliyun.com，如果设置的服务器地址为：https//start.spring.io，创建出来的pom.xml文件内容会略有不同

在父工程fmmall的pom.xml的modules添加api

<?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>
    <!-- spring-boot-starter-parent -->
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.4.4</version>
        <relativePath/>
    </parent>
    <groupId>com.linlin</groupId>
    <artifactId>fmmall</artifactId>
    <packaging>pom</packaging>
    <version>2.0.1</version>
    <modules>
        <module>common</module>
        <module>beans</module>
        <module>mapper</module>
        <module>service</module>
        <module>api</module>
    </modules>

    <properties>
        <maven.compiler.source>8</maven.compiler.source>
        <maven.compiler.target>8</maven.compiler.target>
    </properties>

</project>

最终聚合工程的文件结构展示：

 

3.创建工程之间的依赖关系

在mapper的pom.xml，依赖beans

<dependency>
            <groupId>com.linlin</groupId>
            <artifactId>beans</artifactId>
            <version>2.0.1</version>
        </dependency>

在service的pom.xml，依赖mapper，common

<dependencies>
        <dependency>
            <groupId>com.linlin</groupId>
            <artifactId>mapper</artifactId>
            <version>2.0.1</version>
        </dependency>
        <dependency>
            <groupId>com.linlin</groupId>
            <artifactId>common</artifactId>
            <version>2.0.1</version>
        </dependency>
    </dependencies>

在api的pom.xml，依赖service

<dependency>
            <groupId>com.linlin</groupId>
            <artifactId>service</artifactId>
            <version>2.0.1</version>
        </dependency>

 

依赖配置说明：

1.在父工程的pom文件中一次性添加各个子工程均需要使用的依赖

2.在各个子工程中单独添加当前子工程所需要的依赖