Create a Maven multi-module project in Eclipse

1. Create the parent project first

1. Inside Eclipse New ->  ;Maven Project
2. Select "Create a simple project" in the pop-up interface

In this way, we have created a Maven project according to the regular version. We also need to modify this project. Note: Packaging is of type pom.

Because this is a parent project and does not need any source code, then we delete all unused directories under this project in Eclipse, leaving only the files.pom.xml

2. Create sub-projects

Select the newly created parent project (wyp.ssm.db.bus) and click New -> in the pop-up menu Other -> Maven Module;

 

Use default Archetype (default: GroupId : org.apache.maven.archetypes,  Artifact Id : maven-archetype-quickstart)

Write the name of the Module to be created, for example: wyp.ssm.db.pojo, as shown below:

Such a sub-project is created. In the file system, the sub-project will be built in the directory of the parent project, as shown below:

 

The pom file and project structure in the project are shown as follows:

3. Add references between submodules

For example: mapper project add drinking pojo project:

pojo / pom.xml:

<?xml version="1.0"?>
<project
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"
    xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>wyp.ssm.db.bus</groupId>
        <artifactId>wyp.ssm.db.bus</artifactId>
        <version>1.0.0</version>
    </parent>
    <name>wyp.ssm.db.pojo</name>
    <artifactId>wyp.ssm.db.pojo</artifactId>
</project>

mapper/pom.xml:

<?xml version="1.0"?>
<project
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"
    xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>wyp.ssm.db.bus</groupId>
        <artifactId>wyp.ssm.db.bus</artifactId>
        <version>1.0.0</version>
    </parent>
    <name>wyp.ssm.db.mapper</name>
    <artifactId>wyp.ssm.db.mapper</artifactId>
    <dependencies>
        <dependency>
            <groupId>wyp.ssm.db.bus</groupId>
            <artifactId>wyp.ssm.db.pojo</artifactId>
            <version>${project.version}</version>
        </dependency>
    </dependencies>
</project>

 springmvc/pom.xml

<dependency>
    <groupId>wyp.ssm.db.bus</groupId>
    <artifactId>wyp.ssm.db.pojo</artifactId>
    <version>${project.version}</version>
</dependency>
<dependency>
    <groupId>wyp.ssm.db.bus</groupId>
    <artifactId>wyp.ssm.db.mapper</artifactId>
    <version>${project.version}</version>
</dependency>
<dependency>
    <groupId>wyp.ssm.db.bus</groupId>
    <artifactId>wyp.ssm.db.service</artifactId>
    <version>${project.version}</version>
</dependency>