Long[] arrayLong= new Long[]{1L,2L,3L,4L,5L}; //asList返回的是个固定大小。 List<Long> asList = Arrays.asList(arrayLong); //若是要编辑 List 再以下 new 一个出来 List<Long> list = new ArrayList<>(Arrays.asList(arrayLong)) //数组 转 ArrayList ArrayList<Long> list = new ArrayList<Long>(arrayLong.length); Collections.addAll(list, arrayLong);