日期:2009-03-09  浏览次数:20991 次

四、操作Xml数据的Cls_Person类说明(clsPerson.asp)

Cls_Person类用来完成与联系人信息相关的各种操作,包括添加、修改和删除等等,它使用VBScript编写。Cls_Person包括Id、Name、Nick、Mobile、Tel、Email、QQ和Company属性,对应于XML文件中的Person节点。Cls_Person包括GetInfoFromXml、AddToXml、EditToXml和DeleteFormXml四个主要方法,分别完成获取信息,添加信息,修改信息和删除信息四个功能。

Cls_Person的具体实现如下,



'***************************************************
' 说明:Person类
' 作者:gwd 2002-11-06
' 引用:pub/constpub.asp
'***************************************************

Class Cls_Person

Private m_intId ' Id,对应Person节点在Persons集合中的位置
Private m_strName ' 姓名
Private m_strNick ' 英文名
Private m_strMobile ' 手机
Private m_strTel ' 电话
Private m_strEmail ' 电子邮件
Private m_strQQ ' QQ号
Private m_strCompany ' 所在公司
Private m_strError ' 出错信息

' 类初始化
Private Sub Class_Initialize()
 m_strError = ""
 m_intId = -1
End Sub

' 类释放
Private Sub Class_Terminate()
 m_strError = ""
End Sub

'-----读写各个属性---------------------------

Public Property Get Id
 Id = m_intId
End Property

Public Property Let Id(intId)
 m_intId = intId
End Property

Public Property Get Name
Name = m_strName
End Property

Public Property Let Name(strName)
 m_strName = strName
End Property

Public Property Get Nick
 Nick = m_strNick
End Property

Public Property Let Nick(strNick)
 m_strNick = strNick
End Property

Public Property Get Mobile
 Mobile = m_strMobile
End Property

Public Property Let Mobile(strMobile)
 m_strMobile = strMobile
End Property

Public Property Get Tel
 Tel = m_strTel
End Property

Public Property Let Tel(strTel)
 m_strTel = strTel
End Property

Public Property Get Email
 Email = m_strEmail
End Property

Public Property Let Email(strEmail)
 m_strEmail = strEmail
End Property

Public Property Get QQ
 QQ = m_strQQ
End Property

Public Property Let QQ(strQQ)
 m_strQQ = strQQ
End Property

Public Property Get Company
 Company = m_strCompany
End Property

Public Property Let Company(strCompany)
 m_strCompany = strCompany
End Property

'-----------------------------------------------

' 获取错误信息
Public Function GetLastError()
 GetLastError = m_strError
End Function

' 私有方法,添加错误信息
Private Sub AddErr(strEcho)
 m_strError = m_strError + "<Div CLASS=""alert"">" & strEcho & "</Div>"
End Sub

' 清除错误信息
Public Function ClearError()
 m_strError = ""
End Function

' 从Xml中读取指定节点的数据,并填充各个属性
' 需要首先设置Id
Public Function GetInfoFromXml(objXmlDoc)
 Dim objNodeList
 Dim I

 ClearError

 If objXmlDoc Is Nothing Then
  GetInfoFromXml = False
  AddErr "Dom对象为空值"
  Exit Function
 End If

 If CStr(m_intId) = "-1" Then
  GetInfoFromXml = False
  AddErr "未正确设置联系人对象的ID属性"
  Exit Function
 Else
  I = m_intId - 1 ' 要读取得节点位置
 End If

 ' 选择并读取节点信息,赋予各个属性
 Set objNodeList = objXmlDoc.getElementsByTagName("Person")
 If objNodeList.length - m_intId >= 0 Then
  On Error Resume Next
  m_strName = objNodeList(I).selectSingleNode("Name").Text
  m_strNick = objNodeList(I).selectSingleNode("Nick").Text
  m_strMobile = objNodeList(I).selectSingleNode("Mobile").Text
  m_strTel = objNodeList(I).selectSingleNode("Tel").Text
  m_strEmail = objNodeList(I).selectSingleNode("Email").Text
  m_strQQ = objNodeList(I).selectSingleNode("QQ").Text
  m_strCompany = objNodeList(I).selectSingleNode("Company").Text
  GetInfoFromXml = True
 Else
  GetInfoFromXml = False
  AddErr "获取联系信息发生错误"
  Set objNodeList = Nothing
  Exit Function
 End If
 Set objNodeList = Nothing
End Function

' 添加信息到XML文件中
' 需要首先设置好要填充的属性
Public Function AddToXml(objXmlDoc)
 Dim objPerson, objNode

 ClearError

 If objXmlDoc Is Nothing Then
  AddToXml =