根据元素某个字段对比两个集合差集-交集-补集

import com.alibaba.fastjson.JSONObject;
import com.google.common.collect.Lists;
import com.google.common.collect.Maps;
import com.google.common.collect.Sets;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.StringUtils;
import org.springframework.util.CollectionUtils;

import java.lang.reflect.Field;
import java.util.Arrays;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.stream.Collectors;

@Slf4j
public class CompareListUtil {

    
    public static String DIFFERENCE = "difference_add";

    
    public static String INTERSECTION = "intersection_update";

    
    public static String COMPLEMENT = "complement_delete";

    
    public static  Map> compareList(List oldList, List newList, String fieldName) throws IllegalAccessException {
        if (StringUtils.isBlank(fieldName)) {
            throw new RuntimeException("n对比字段不能为空");
        }
        // 空集合
        List emptyList = Lists.newArrayList();
        List differenceList = Lists.newArrayList();
        List intersectionList = Lists.newArrayList();
        List complementList = Lists.newArrayList();
        Map> resultMap = Maps.newHashMap();
        if (CollectionUtils.isEmpty(oldList)) {
            resultMap.put(DIFFERENCE, newList);
            resultMap.put(INTERSECTION, emptyList);
            resultMap.put(COMPLEMENT, emptyList);
            return resultMap;
        }
        if (CollectionUtils.isEmpty(newList)) {
            resultMap.put(DIFFERENCE, emptyList);
            resultMap.put(DIFFERENCE, emptyList);
            resultMap.put(COMPLEMENT, oldList);
            return resultMap;
        }

        Set