How to solve circular dependencies on maven without adding a third module

background:

 A new module needs to depend on the code of the main module, but the main module needs the logic written by the new module

solve:

The new module can be packaged into the local warehouse first. When the main module refers to the new module, it is referenced in the way of <scope>system</scope>, and the path of the system is written. You can bypass the detection of circular dependencies