创建springboot多模块项目

一、打开idea，创建maven项目

新建项目，选择New project ，填入项目名，java版本等信息，点击创建

二、删除src文件夹，更改pom.xml

只保留如下图所示文件即可

将 <packaging>标签的值改为pom

三、在子目录下创建一个独立的模块，用于全局版本管理

父选项一定要选择None

删除src文件夹，只保留pom.xml，同样的


将 <packaging>标签的值改为pom

创建

<dependencyManagement>标签，

引入springboot 依赖

四、在父pom引入依赖模块

还需在父模块

<dependencyManagement>标签

内引入依赖模块

五、创建web模块，引入web依赖

如图所示，有箭头则创建没有问题

在依赖模块引入web模块，用于版本管理

六、创建springboot启动模块

引入web模块，用于启动springboot

创建启动类，加入注解和main方法，运行springboot项目

结束：运行成功

各模块完整pom.xml文件

${revision} : 用于多模块版本管理，统一版本号

父pom

<?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.dnn.boot</groupId>
    <artifactId>dnn-boot-test</artifactId>
    <version>${revision}</version>
    <packaging>pom</packaging>

    <properties>
        <revision>1.0.0</revision>
        <java.version>1.8</java.version>
        <lombok.version>1.18.20</lombok.version>
        <mapstruct.version>1.4.1.Final</mapstruct.version>
        <maven.compiler.source>${java.version}</maven.compiler.source>
        <maven.compiler.target>${java.version}</maven.compiler.target>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <maven-compiler-plugin.version>3.8.0</maven-compiler-plugin.version>
        <maven-surefire-plugin.version>3.0.0-M5</maven-surefire-plugin.version>
    </properties>

    <modules>
        <module>dnn-boot-dependencies</module>
        <module>dnn-boot-starter-web</module>
        <module>dnn-boot-starter</module>
    </modules>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>com.dnn.boot</groupId>
                <artifactId>dnn-boot-dependencies</artifactId>
                <version>${revision}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>

</project>

依赖模块pom

<?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.dnn.boot</groupId>
    <artifactId>dnn-boot-dependencies</artifactId>
    <version>${revision}</version>
    <packaging>pom</packaging>

    <properties>
        <revision>1.0.0</revision>
        <!-- 统一依赖管理 -->
        <spring.boot.version>2.6.10</spring.boot.version>
        <maven.compiler.source>8</maven.compiler.source>
        <maven.compiler.target>8</maven.compiler.target>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    </properties>

    <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>

            <dependency>
                <groupId>com.dnn.boot</groupId>
                <artifactId>dnn-boot-starter-web</artifactId>
                <version>${revision}</version>
            </dependency>
        </dependencies>
    </dependencyManagement>

</project>

web模块pom

<?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>dnn-boot-test</artifactId>
        <groupId>com.dnn.boot</groupId>
        <version>${revision}</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>dnn-boot-starter-web</artifactId>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
    </dependencies>

</project>

启动模块pom

<?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>dnn-boot-test</artifactId>
        <groupId>com.dnn.boot</groupId>
        <version>${revision}</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>dnn-boot-starter</artifactId>

    <dependencies>
        <dependency>
            <groupId>com.dnn.boot</groupId>
            <artifactId>dnn-boot-starter-web</artifactId>
        </dependency>
    </dependencies>

</project>