REUSABLE BUSINESS CODE, NO NEED FOR DUPLICATION: YOU CAN USE EXISTING BUSINESS OBJECTS AS COMMAND OR FORM OBJECTS INSTEAD OF MIRRORING THEM IN SPECIAL ACTIONFORM SUBCLASSES.

• 重用业务逻辑代码；不需要复制:你可以用已经有的业务逻辑对象作为命令或则FORM对象代替反射特定的ACTIONFORM子类.