map分页获取数据

    /**
     * map分页（从1开始）
     *
     * @param map 分页数据
     * @param pageSize     页面大小
     * @param currentPage  当前页面
     */
    public static Map<String, List<String>> listPage(Map<String, List<String>> sourceMap, int pageSize, int currentPage) {
        Map<String, List<String>> map = new LinkedHashMap<>();
        if (groupAccasoa.size() > 0) {
            AtomicInteger flag = new AtomicInteger(0);
            AtomicInteger size = new AtomicInteger(0);
            int currIdx = (currentPage > 1  ? (currentPage - 1) * pageSize : 0);
            groupAccasoa.forEach((ass, list_km) -> {
                if (flag.get() >= currIdx) {
                    if (size.get() < pageSize) {
                        map.put(ass, list_km);
                    } else {
                        return;
                    }
                    size.getAndIncrement();
                }
                flag.getAndIncrement();
            });

        }
        return map;
    }