identifier of an instance of com.edu.zidonghua.po.TbUser was altered from 2 to null
2013-08-25 01:53
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使用BeanUtils.copyProperties()方法copy两个对象；错误发现了: 原来使用的是org.apache.commons.beanutils.BeanUtils的copyProperties()方法 import org.apache.commons.beanutils.BeanUtils;
copyProperties(Object dest, Object orig) 第一个参数是目标对象，第二个参数是源对象；我把两个对象写反了: BeanUtils.copyProperties(bkHotKeyword,wsHotKeywordDto);
使用org.springframework.beans.BeanUtils的copyProperties()方法
import org.springframework.beans.BeanUtils;
copyProperties(Object sourth, Object target) 左边是源对象，右边是目标对象；
copyProperties(Object dest, Object orig) 第一个参数是目标对象，第二个参数是源对象；我把两个对象写反了: BeanUtils.copyProperties(bkHotKeyword,wsHotKeywordDto);
使用org.springframework.beans.BeanUtils的copyProperties()方法
import org.springframework.beans.BeanUtils;
copyProperties(Object sourth, Object target) 左边是源对象，右边是目标对象；
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