1) 從 FormBean 復制值到 JavaBean 或者互相復制.
??????????? TdepartmentForm deptForm = (TdepartmentForm) form;
??????????? Tdepartment tdepartment = new Tdepartment();
??????????? BeanUtils.copyProperties(tdepartment, deptForm);
2) 復制實體(實體一般是動態的代理類)為 ValueObject 防止原始實體的值被更新掉
??????????? Tproviderbill billVO = new Tproviderbill();
??????????? BeanUtils.copyProperties(billVO, dao.getBill(1));// 復制屬性, 防止原實體被修改
??????????? if(billVO.xxx == xxx) {
??????????????? billVO.setName(“aaaa”);
??????????? }
??????? // 保存查詢結果
??????? request.setAttribute("bill", billVO);

不過, 又有人指出 CGLIB 復制 Bean 速度更快, 效率更高(目前尚未做相關測試)!

static BeanCopier copy = BeanCopier.create(Bean.class, Bean2.class, false);

void beanCopies(Object source , Object target)｛
??? copy.copy(source, target, null);
}

Apache BeanUtils 妙用