1.在父工程中新建模块

2.在system模块中引用

<dependencies>
	<dependency>
		<groupId>org.jeecgframework.boot</groupId>
		<artifactId>jeecg-boot-base-common</artifactId>
	</dependency>
	<dependency>
		<groupId>org.jeecgframework.boot</groupId>
		<artifactId>jeecg-boot-module-demo</artifactId>
	</dependency>
</dependencies>

3.在父工程中引用

<dependencies>
	<!-- jeecg-boot-base-common -->
	<dependency>
		<groupId>org.jeecgframework.boot</groupId>
		<artifactId>jeecg-boot-base-common</artifactI
		<version>${jeecgboot.version}</version>
	</dependency>
	<!-- jeecg-boot-module-demo -->
	<dependency>
		<groupId>org.jeecgframework.boot</groupId>
		<artifactId>jeecg-boot-module-demo</artifactI
		<version>${jeecgboot.version}</version>
	</dependency>

4.在demo模块中引用common模块

<dependencies>
    <dependency>
        <groupId>org.jeecgframework.boot</groupId>
        <artifactId>jeecg-boot-base-common</artifactId>
    </dependency>
</dependencies>