去除List中重复的数据

来源：互联网发布：pagerank算法代码编辑：程序博客网时间：2024/04/29 22:05

/**
* TODO 去除两个list重复数据
* @param List ,List
* @author 邓超
* @version 1.0
* @time 2017-03-16
* @return addList与updateList不相同数据的集合
*/
private List addList(List addList,List updateList){
List newList = new ArrayList();
try {

        Map<String, DateMainTainVO> map =new HashMap<String, DateMainTainVO>();        for(DateMainTainVO temp : addList){            map.put(DateUtils.formatDateToSimple(temp.getMainTainDate()), temp);        }        for(DateMainTainVO temp : updateList){            if(map.containsKey(DateUtils.formatDateToSimple(temp.getMainTainDate()))){                map.remove(DateUtils.formatDateToSimple(temp.getMainTainDate()));            }        }        if(map!=null &&map.size()>0){            Iterator it = map.keySet().iterator();                 while (it.hasNext()) {                     String key = it.next().toString();                     newList.add(map.get(key));                 }                return newList;        }else{            return null;        }    } catch (Exception e) {        log.error("[ERROR:去除去除addList中与updateList相同数据 出现未知异常]",e);        return null;    }}

/**
* TODO 去除excel表中重复数据，去除一个list中重复数据
* @author 邓超
* @version 1.0
* @time 2017-03-16
* @param List list
* @return List
*/
private List repetitionList(
List list){
List newList = new ArrayList();
try {
if(list == null || list.size() <= 0){
return new ArrayList();
} else if(list.size() == 1){
return list;
}
Map

0 0