我正在多台计算机上运行基于网络的幻灯片。我有一个 VBScript,它在启动时运行,打开 IE 并以全屏模式导航到特定页面。只要启动时有互联网连接,一切都会很好。如果没有,则页面永远不会加载。 VBScript 中是否有一种方法可以每隔几分钟检查一次连接,直到找到连接,然后继续执行脚本?这是代码供您参考:
Option Explicit
Dim WshShell
set WshShell = WScript.CreateObject("WScript.Shell")
On Error Resume Next
With WScript.CreateObject ("InternetExplorer.Application")
.Navigate "http://www.example.com/slideshow"
.fullscreen = 1
.Visible = 1
WScript.Sleep 10000
End With
On Error Goto 0
参考这个==>循环函数?
是的,您可以使用此代码轻松完成:
Option Explicit
Dim MyLoop,strComputer,objPing,objStatus
MyLoop = True
While MyLoop = True
strComputer = "smtp.gmail.com"
Set objPing = GetObject("winmgmts:{impersonationLevel=impersonate}!\\").ExecQuery _
("select * from Win32_PingStatus where address = '" & strComputer & "'")
For Each objStatus in objPing
If objStatus.Statuscode = 0 Then
MyLoop = False
Call MyProgram()
wscript.quit
End If
Next
Pause(10) 'To sleep for 10 secondes
Wend
'**********************************************************************************************
Sub Pause(NSeconds)
Wscript.Sleep(NSeconds*1000)
End Sub
'**********************************************************************************************
Sub MyProgram()
Dim WshShell
set WshShell = WScript.CreateObject("WScript.Shell")
On Error Resume Next
With WScript.CreateObject ("InternetExplorer.Application")
.Navigate "http://www.example.com/slideshow"
.fullscreen = 1
.Visible = 1
WScript.Sleep 10000
End With
On Error Goto 0
End Sub
'**********************************************************************************************
如果 Hackoo 的代码不适合您,您可以尝试以下操作。并非所有服务器都会响应 ping 请求,但您可以发出 HTTP 请求并查看服务器是否发送有效响应(状态 = 200)。
Function IsSiteReady(strURL)
With CreateObject("MSXML2.XMLHTTP")
.Open "GET", strURL, False
.SetRequestHeader "User-Agent", "Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1)"
On Error Resume Next
.Send
If .Status = 200 Then IsSiteReady = True
End With
End Function
这是检查您的互联网连接的非常短的代码:
Function isConnectionON()
Set oFSO = CreateObject("Scripting.FileSystemObject")
Dim isInternetConnected
isInternetConnected = 0
Set oShell = WScript.CreateObject("WScript.Shell")
strHost = "google.com"
strPingCommand = "ping -n 1 -w 300 " & strHost
ReturnCode = oShell.Run(strPingCommand, 0 , True)
If ReturnCode = 0 Then
isInternetConnected= 1
Else
isInternetConnected= 0
End If
isConnectionON=isInternetConnected
End Function
调用函数:
isInternetConneted = isConnectionON()
WScript.Echo "isInternetConneted: "&isInternetConneted