ASP網絡打印功能的代碼

2024-05-04 11:07:26

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<%@ Language=vbscript %>
<%
Option Explicit

Dim strSubmit 'Form中用來保存提交按鈕的值
Dim strPrinterPath 'Form中保存網絡打印機路徑的值
Dim strUsername 'Form中用戶名的值
Dim strPassword 'Form中密碼的值
Dim strMessage 'Form打印內容的值
Dim objFS 'VBScript中的文件系統對象
Dim objWS.NET 'WSH中的網絡對象
Dim objPrinter '打印對象

strSubmit = Request.Form("Submit")
%>

<%
If strSubmit = "" Then
%>

注意的是：
由于這是演示，其中有關NT的帳號和密碼都是使用了不加密的手段在ASP中傳遞的
真正的運用中應該對該登錄過程進行安全處理。
<FORM action="ASPPrint.asp" method=POST id=form name=form>
<TABLE WIDTH=100% ALIGN=center BORDER=0 CELLSPACING=1 CELLPADDING=1>
<TR>
<TD ALIGN=right NOWRAP>網絡打印機路徑:</TD>
<TD ALIGN=left NOWRAP><INPUT type="text" id=printerpath name=printerpath
value="< domain >< Printer >"></TD>
</TR>
<TR>
<TD ALIGN=right NOWRAP>登錄帳號:</TD>
<TD ALIGN=left NOWRAP><INPUT type="text" id=username name=username
value="<% = strUsername %>"></TD>
</TR>
<TR>
<TD ALIGN=right NOWRAP>登錄口令:</TD>
<TD ALIGN=left NOWRAP><INPUT type="password" id=password
name=password></TD>
</TR>
<TR>
<TD ALIGN=right NOWRAP>請輸入你想打印的文字:</TD>
<TD ALIGN=left NOWRAP><TEXTAREA rows=2 cols=20 id=message
name=message></TEXTAREA></TD>
</TR>
<TR>
<TD ALIGN=right NOWRAP> </TD>
<TD ALIGN=left NOWRAP><INPUT type="submit" value="Submit"
id=submit name=submit></TD>
</TR>
</TABLE>
</FORM>

當以上信息被提交后，就可以按照下面的代碼進行打印了。
<%
Else
' 從form中取得響應信息。
strPrinterPath = Request.Form("printerpath")
strUsername = Request.Form("username")
strPassword = Request.Form("password")
strMessage = Request.Form("message")

We will now use the VBScript FileSystemobject object and the WSH Network object. The Network object will
give us the methods we need to open a printer connection, and the FileSystemObject will allow us to stream our
output to the printer. We create these objects in the following code example:

Set objFS = CreateObject("Scripting.FileSystemObject")
Set objWSHNet = CreateObject("WScript.Network")
' 使用WSH連接網絡打印機
objWSHNet.AddPrinterConnection "LPT1", strPrinterPath, False, strUsername, strPassword
' 使用文件系統對象將打印設備作為一個文件使用
Set objPrinter = objFS.CreateTextFile("LPT1:", True)
' 給打印設備送出文本
objPrinter.Write(strMessage)
'關閉打印設備對象并進行錯誤陷阱處理
On Error Resume Next
objPrinter.Close
' 如果發生錯誤，關閉打印連接，并輸出錯誤信息
If Err Then
Response.Write ("Error # " & CStr(Err.Number) & " " & Err.Description)
Err.Clear
Else
' 操作成功，輸出確認信息
Response.Write("<CENTER>")
Response.Write("<TABLE WIDTH=100% ALIGN=center BORDER=0 CELLSPACING=1 CELLPADDING=1>")
Response.Write("<TR><TD ALIGN=RIGHT><B>打印消息送出:</B></TD>")
Response.Write("<TD ALIGN=LEFT>" & strMessage & "</TD></TR>")
Response.Write("<TR><TD ALIGN=RIGHT><B>網絡打印機路徑:</B></TD>")
Response.Write("<TD ALIGN=LEFT>" & strPrinterPath & "</TD></TR>")
Response.Write("<TR><TD ALIGN=RIGHT><B>登錄帳號:</B></TD>")
Response.Write("<TD ALIGN=LEFT>" & strUsername & "</TD></TR>")
Response.Write("</TABLE>")
Response.Write("</CENTER>")
End If
' 取消打印連接
objWSHNet.RemovePrinterConnection "LPT1:"
Set objWSHNet = Nothing
Set objFS = Nothing
Set objPrinter = Nothing
End If
%>
</BODY>
</HTML>