数组和list集合相互转换

1. 数组转集合

T[] arry = new T[]{};

List list = Arrays.asList(arry);

2.集合转数组

List list = new ArrayList<>();

T[] arry = list.toArray(new T[0]);

3.单字段转集合

Lists.newArrayList(warehouseId)

warehouseId 为Integer类型