搞不清楚了晕`````
------解决方案--------------------
vo --- Value Object 值对象
po --- Persistence Object 持久化对象
bo --- Business Object 业务对象
------解决方案--------------------
VO: value object 值对象
PO: persistent object 持久化对象
BO: business object 业务对象
还有如DAO(Data Access Object) POJO (Plain Ordinary Java Object)
------解决方案--------------------
从网上看看