/**
	 * 11.部门id(对应表:dbo.l_department)
	 */
	@Column("departmentid")
	private int departmentid;

	public int getDepartmentid() {
		return departmentid;
	}
	public void setDepartmentid(int departmentid) {
		System.out.println("----------"+departmentid);
		this.departmentid = departmentid;
	}

数据库中该字段的值是NULL.
我怎么才能获取一个departmentid:NUll呢?