Java实现list根据实体类的某个属性去重，保留实体类属性最多的

public static void main(String[] args) throws IllegalAccessException {
        List<PaperItemVo> paperItemVos = new ArrayList<>();
        PaperItemVo paperItemVo = new PaperItemVo();
        paperItemVo.setPaperName("营业执照");
        PaperItemVo paperItemVo1 = new PaperItemVo();
        paperItemVo1.setPaperName("营业执照");
        paperItemVo1.setAgency("12321");
        paperItemVo1.setAmount("234234");
        PaperItemVo paperItemVo2 = new PaperItemVo();
        paperItemVo2.setPaperName("营业执照");
        paperItemVo2.setAgency("12321");
        paperItemVo2.setAmount("234234");
        paperItemVo2.setDiscipline("shjkdfhsdkjf");
        paperItemVo2.setGrade("hsijfjsdk");

        paperItemVos.add(paperItemVo);
        paperItemVos.add(paperItemVo1);
        paperItemVos.add(paperItemVo2);

        Map<String, List<PaperItemVo>> groupByPaperName = paperItemVos.stream().collect(Collectors.groupingBy(PaperItemVo::getPaperName));
        List<PaperItemVo> list = filterList(groupByPaperName, PaperItemVo.class);
        list.forEach(System.out::println);
    }

/**
     * 根据实体类的某个属性去重，保留去重的实体类属性不为空最多的类
     * 如果集合中的对象全是满属性,默认返回第一个
     * @param groupByPaperName 已近通过某个属性分组的集合
     * @param classType 类的字节码对象
     * @param <T> 泛型
     * @return 过滤后的集合
     */
    public static <T> List<T> filterList(Map<String, List<T>> groupByPaperName, Class<T> classType) {
    	if (groupByPaperName == null || groupByPaperName.size() == 0){
            return null;
        }
        List<T> filterList = new ArrayList<>();
        Field[] fields = classType.getDeclaredFields();
        int oldNotNullFieldNum = 0;
        int thisNotNullFieldNum = 0;
        for (String paperName : groupByPaperName.keySet()) {
            List<T> paperItemVos = groupByPaperName.get(paperName);
            T paperItemVo = paperItemVos.get(0);
            for (Field field : fields) {
                Object fieldValue = ReflectUtil.getFieldValue(paperItemVo, field);
                if (Objects.nonNull(fieldValue)) {
                    oldNotNullFieldNum ++;
                }
            }
            for (T itemVo : paperItemVos) {
                for (Field field : fields) {
                    Object fieldValue = ReflectUtil.getFieldValue(itemVo, field);
                    if (Objects.nonNull(fieldValue)) {
                        thisNotNullFieldNum ++;
                    }
                }
                if (thisNotNullFieldNum > oldNotNullFieldNum) {
                    oldNotNullFieldNum = thisNotNullFieldNum;
                    paperItemVo = itemVo;
                }
                //重置
                thisNotNullFieldNum = 0;
            }
            filterList.add(paperItemVo);
            //重置
            oldNotNullFieldNum = 0;
        }
        return filterList;
    }

运行效果：