Question

I would like to copy the properties of an object to another, only if they are not null and exist in the target object. I know BeanUtils.copyProperties but it doesn t exactly suit the need.

What totally suit is the jquery.extend function. Is there an equivalent in the Java libraries/frameworks ? (or else I ll write my own...)

例如,目的地是用户,其来源是用户:

User                           UserSettings                     User
fisrtName="Rick"               firstName=null                  fisrtName="Rick"  
lastName="Dangerous"  extends  lastName="newLastName"  gives   lastName="newLastName"
nickName="RD"                                                  nickName="RD"

EDIT

最后,我写了我自己的方法,如果有人有兴趣见。

Answer 1

Your code would still benefit from the beanutils

PropertyUtils.setSimpleProperty()

以及

PropertyUtils.getSimpleProperty()

方法

Answer 2

Maybe BeanUtilsBean.copyProperties(o1, o2)?

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