获取两个List集合中的不相同的对象

1.重写对象中某个属性的hashCode和equals方法
2.解决了大量for循环嵌套的问题 
 private List<ActivityConfigDo> getListCompare(List<ActivityConfigDo> configDoList, List<ActivityConfigDo> measureToActivityList) {
//        List<ActivityConfigDo> diff = new ArrayList<>();
//        for (ActivityConfigDo activityConfigDo : configDoList) {
//            if (!measureToActivityList.contains(activityConfigDo)) {
//                diff.add(activityConfigDo);
//            }
//        }
//        return diff;

        List<ActivityConfigDo> activityConfigDos = Lists.newArrayList();
        List<ActivityConfigDo> maxList = configDoList;
        List<ActivityConfigDo> minList = measureToActivityList;
        if (measureToActivityList.size() > configDoList.size()) {
            maxList = measureToActivityList;
            minList = configDoList;
        }
        ConcurrentHashMap<ActivityConfigDo, Integer> map = new ConcurrentHashMap<>(maxList.size());
        //targetActivity
        for (ActivityConfigDo activityConfigDo : maxList) {
            map.put(activityConfigDo, 1);

        }
        //sourceActivity
        for (ActivityConfigDo activityConfigDo : minList) {
            // 相同的
            if (map.get(activityConfigDo) != null) {
                map.put(activityConfigDo, 2);
                continue;
            }
            // 不相等的
            activityConfigDos.add(activityConfigDo);
        }
        for (Map.Entry<ActivityConfigDo, Integer> entry : map.entrySet()) {
            if (entry.getValue() == 1) {
                activityConfigDos.add(entry.getKey());
            }
        }
        return activityConfigDos;
    }

package com.mcloud.nis.knowledge.domain;

import io.swagger.annotations.Api;
import io.swagger.annotations.ApiModelProperty;

import java.util.Objects;

/**
 * Created by 周建鹏
 * on 2019/9/27
 * 16:39
 * 活动配置
 */
@Api(value ="活动配置")
public class ActivityConfigDo extends  BaseDo {

    /**活动名称**/
    @ApiModelProperty(value = "活动名称")
    private String  activityName;
    /**编码类型*/
    @ApiModelProperty(value = "编码类型")
    private String basicType;
    @ApiModelProperty(value = "活动类型")
    private String activeType;
    /**活动内容*/
    @ApiModelProperty(value = "活动内容")
    private String activityAction;
    /**措施ID*/
    @ApiModelProperty(value = "措施Id")
    private Integer measureId;

    @ApiModelProperty(value = "活动状态")
    private Integer activityStatus;

    public ActivityConfigDo() {
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) return true;
        if (o == null || getClass() != o.getClass()) return false;
        ActivityConfigDo that = (ActivityConfigDo) o;
        return activityName.equals(that.activityName);
    }

    @Override
    public int hashCode() {
        return Objects.hash(activityName);
    }

    public String getActivityName() {
        return activityName;
    }

    public void setActivityName(String activityName) {
        this.activityName = activityName;
    }

    public String getActivityAction() {
        return activityAction;
    }

    public void setActivityAction(String activityAction) {
        this.activityAction = activityAction;
    }

    public Integer getMeasureId() {
        return measureId;
    }

    public void setMeasureId(Integer measureId) {
        this.measureId = measureId;
    }

    public Integer getActivityStatus() {
        return activityStatus;
    }

    public void setActivityStatus(Integer activityStatus) {
        this.activityStatus = activityStatus;
    }

    public String getBasicType() {
        return basicType;
    }

    public void setBasicType(String basicType) {
        this.basicType = basicType;
    }

    public String getActiveType() {
        return activeType;
    }

    public void setActiveType(String activeType) {
        this.activeType = activeType;
    }
}