分隔List集合，按指定大小，将集合分成多个

/** * 常用工具类 * @author hetiewei(贺铁伟) * */public class JayCommonUtil {/*** 按指定大小，分隔集合，将集合按规定个数分为n个部分* * @param list* @param len* @return*/public static List<List<?>> splitList(List<?> list, int len) {if (list == null || list.size() == 0 || len < 1) {return null;}List<List<?>> result = new ArrayList<List<?>>();int size = list.size();int count = (size + len - 1) / len;for (int i = 0; i < count; i++) {List<?> subList = list.subList(i * len, ((i + 1) * len > size ? size : len * (i + 1)));result.add(subList);}return result;}}