一:""也进行复制
package com.wing.ihome.cloud.core.util;
import org.springframework.beans.BeanWrapper;
import org.springframework.beans.BeanWrapperImpl;
import org.springframework.util.StringUtils;
import java.util.HashSet;
import java.util.Set;
/**
* 解决BeanUtils.copyProperties复制null属性的问题
*/
public class CopyUtils {
/**
* BeanUtils.copyProperties(source, target, getNullPropertyNames(source));
* 可忽略null属性 ""属性
* @param source
* @return
*/
public static String[] getNullPropertyNames(Object source) {
final BeanWrapper src = new BeanWrapperImpl(source);
java.beans.PropertyDescriptor[] pds = src.getPropertyDescriptors();
Set<String> emptyNames = new HashSet<>();
for (java.beans.PropertyDescriptor pd : pds) {
Object srcValue = src.getPropertyValue(pd.getName());
if (StringUtils.isEmpty(srcValue)) {
emptyNames.add(pd.getName());
}
}
String[] result = new String[emptyNames.size()];
return emptyNames.toArray(result);
}
}
使用:
BeanUtils.copyProperties(inpUserParam, user, CopyUtils.getNullPropertyNames(inpUserParam));
inpUserParam 要传递者
user 被传递者