public HomeController()
 {
     bookObjectModel = new BookObjectModel();
     bookObjectTypeModel = new BookObjectTypeModel();
     bookRecordsModel = new BookRecordsModel();
     departmentsModel = new DepartmentsModel();
 }
 /// <summary>
 /// 构造函数
 /// </summary>
 public BookRecordsController()
 {
     bookRecordsModel = new BookRecordsModel();
 }