BeanUtils.copyProperties null覆盖问题

直接用一下工具类

public class CopyUtils {
    public static String[] getNullPropertyNames (Object source) {
        final BeanWrapper src = new BeanWrapperImpl(source);
        java.beans.PropertyDescriptor[] pds = src.getPropertyDescriptors();

        Set<String> emptyNames = new HashSet<String>();
        for(java.beans.PropertyDescriptor pd : pds) {
            Object srcValue = src.getPropertyValue(pd.getName());
            if (srcValue == null) emptyNames.add(pd.getName());
        }
        String[] result = new String[emptyNames.size()];
        return emptyNames.toArray(result);
    }

    public static void copyProperties(Object src, Object target) {
        BeanUtils.copyProperties(src, target, getNullPropertyNames(src));
    }
}

原文链接：https://blog.csdn.net/u011870280/article/details/80079477