insert method
写入数据
Implementation
Future insert(List<ShopInfo> list) async {
Database db = await getDatabase();
var batch = db.batch();
/// 循环插入
list.forEach((e) => batch.insert(
tableName(),
e.toJson(),
conflictAlgorithm: ConflictAlgorithm.replace,
));
/// 提交事务
return await batch.commit();
}