我知道为时已晚，但这可以帮助其他正在寻找相同问题的人.

I know its too late But this could help others who are searching for same problem.

假设您有2个项目p1和p2，然后要在p1项目中使用p2项目的类，

suppose you have 2 projects p1 and p2 and you want to use p2 project's classes in p1 project then,

A)右键单击您的p2 maven项目(如果不是maven项目，则将其转换为maven)，然后
->选择运行方式->单击Maven安装. (这将使p2可以用于您本地maven存储库中的其他项目)

A) Right Click on your p2 maven project(If not maven project then convert it to maven) then
-->Choose Run As-->Click on Maven Install. (It will make p2 to avaliable for other projects in your local maven repository)

B)现在，您可以像这样在p1项目的pom.xml文件中简单地将p2项目添加为依赖项

B) Now you can simply add p2 project as dependency in p1 project's pom.xml file like this

  <dependency>
    <groupId>com.project.p2</groupId>
    <artifactId>p2</artifactId>
    <version>1.0-SNAPSHOT</version>
    <scope>compile</scope>
  </dependency>

有关更多详细信息，请参见

For more details see this