java中list分页处理

//分页处理
for (int i = 0; i < mapList.size(); ) {
    String fileName = SrpStringUtil.getUUID();
    //不够10条 直接取完
    if (LastIndex >= mapList.size()) {
        //总共多少条
        LastIndex = mapList.size();
        List> sourceList = mapList.subList(i, LastIndex);
        exportMatchingImageV2(fileName, fileUrl, fileFomart, sourceList, isShow);
        resultMap.add(fileName);
        //直接gai束
        break;
    } else {
        //先取第一页
        List> sourceList = mapList.subList(i, LastIndex);
        //下一页的开始 10  19
        i = LastIndex;
        //下一页的结束 19  28
        LastIndex = i + (pageSize - 1);
        exportMatchingImageV2(fileName, fileUrl, fileFomart, sourceList, isShow);
        resultMap.add(fileName);
    }
}