Bean属性复制 忽略空值/空白字符

BeanUtils2.java

package test;

import org.apache.commons.lang.StringUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.BeanWrapper;
import org.springframework.beans.BeanWrapperImpl;

import java.beans.PropertyDescriptor;
import java.util.HashSet;
import java.util.Set;

public class BeanUtils2 {

    public static void copyProperties(Object source, Object target) {
        BeanUtils.copyProperties(source, target, getNullOrEmptyPropertyNames(source));
    }

    public static String[] getNullOrEmptyPropertyNames(Object source) {
        final BeanWrapper src = new BeanWrapperImpl(source);
        PropertyDescriptor[] pds = src.getPropertyDescriptors();

        Set<String> emptyNames = new HashSet<>();
        for (PropertyDescriptor pd : pds) {
            Object srcValue = src.getPropertyValue(pd.getName());
            // 此处判断可根据需求修改
            if (srcValue == null || StringUtils.isBlank(srcValue + "")) {
                emptyNames.add(pd.getName());
            }
        }
        String[] result = new String[emptyNames.size()];
        return emptyNames.toArray(result);
    }

}

ref: http://blog.wya1.com/article/Internet/details/3061