SpringBoot多模块项目搭建（一）

1. 新建maven项目

1.1 File -> new -> project ->maven

1.2 设置groupId和artifactId

1.3 设置项目名

1.4 删除源码目录

2. 新建应用程序入口模块

2.1 右击项目，新建Springboot module

2.2 设置groupId和artifactId

2.3 选择需要的依赖（后续引入也行） 建议引入SpringBoot DevTools、Lombok、Spring web 2.4 设置module路径，finish

3. 修改root项目pom.xml

3.1 添加modules，并声明各个module

<modules>
    <module>springboot-base</module>
</modules>

3.2 添加properties，用于配置各种依赖的版本号等其它配置项

<properties>
    <springboot-base-version>1.0-SNAPSHOT</springboot-base-version>
    <spring.boot.version>2.2.0.RELEASE</spring.boot.version>
</properties>

3.3 添加dependencyManagement，用于管理各个jar的引入

此时，root项目的pom.xml文件如下

<?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.jw</groupId>
    <artifactId>springboot-base-root</artifactId>
    <version>${springboot-base-version}</version>

    <modules>
        <module>springboot-base</module>
    </modules>

    <properties>
        <springboot-base-version>1.0-SNAPSHOT</springboot-base-version>
        <spring.boot.version>2.2.0.RELEASE</spring.boot.version>
    </properties>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-web</artifactId>
                <version>${spring.boot.version}</version>
            </dependency>

            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-devtools</artifactId>
                <version>${spring.boot.version}</version>
                <scope>runtime</scope>
                <optional>true</optional>
            </dependency>
            <dependency>
                <groupId>org.projectlombok</groupId>
                <artifactId>lombok</artifactId>
                <version>${spring.boot.version}</version>
                <optional>true</optional>
            </dependency>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-test</artifactId>
                <version>${spring.boot.version}</version>
                <scope>test</scope>
                <exclusions>
                    <exclusion>
                        <groupId>org.junit.vintage</groupId>
                        <artifactId>junit-vintage-engine</artifactId>
                    </exclusion>
                </exclusions>
            </dependency>
        </dependencies>
    </dependencyManagement>

</project>

4. 修改各个子模块的pom.xml

4、1 修改parent为root模块
4、2 修改当前module的version与父模块一致
此时pom.xml文件如下

<?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>
        <groupId>com.jw</groupId>
        <artifactId>springboot-base-root</artifactId>
        <version>${springboot-base-version}</version>
    </parent>

    <groupId>com.jw</groupId>
    <artifactId>springboot-base</artifactId>
    <version>${springboot-base-version}</version>
    <name>springboot-base</name>

    <properties>
        <java.version>1.8</java.version>
    </properties>

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

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <scope>runtime</scope>
            <optional>true</optional>
        </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>
            <exclusions>
                <exclusion>
                    <groupId>org.junit.vintage</groupId>
                    <artifactId>junit-vintage-engine</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

</project>

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