从网页获取字段值

本文介绍了从网页获取字段值-LotusScript的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我需要使用lotusscript从网页中读取字段值.本质上，我计划编写一个代理以转到特定的URL，从页面中获取一个值，然后将该值用于它将用户发送到的URL.

I need to read the field value from a webpage using lotusscript. Essentially I am planning on writing an agent to go to a specific URL, get a value from the page, and then use this value for the url it sends the user to.

有人可以给我指点吗?

A

推荐答案

2019年12月更新:从Notes 10(于2018年发布)开始，NotesHTTPRequest类的功能完全相同东西作为我的代码.

Update December 2019: As of Notes 10 (released in 2018) there is a NotesHTTPRequest class that does exactly the same thing as my code.

我一直都这样做，这一点也不难(在Windows上).我创建了一个类来执行此操作，因此很容易实现.

I do this all the time, it is not hard at all (on Windows). I created a class to do this, so it is very easy to implement.

这是您的称呼方式:

Dim internet As New RemoteHTML() Dim html As String html = internet.GetHTTP("www.texasswede/mypage.html")

就是这样，现在您只需从html字符串中提取所需的任何信息即可.

That's it, now you just pull whatever information you want out of the html string.

这是课程:

Option Public Option Declare Class RemoteHTML Private httpObject As Variant Public httpStatus As Integer Public Sub New() Set httpObject = CreateObject("MSXML2.ServerXMLHTTP") End Sub Public Function GetHTTP(httpURL As String) As String Dim retries As Integer retries = 0 Do If retries>1 Then Sleep 1 ' After the two first calls, introduce a 1 second delay betwen each additional call End If retries = retries + 1 Call httpObject.open("GET", httpURL, False) Call httpObject.send() httpStatus = httpObject.Status If retries >= 10 Then httpStatus = 0 ' Timeout End If Loop Until httpStatus = 200 Or httpStatus > 500 Or httpStatus = 404 Or httpStatus = 0 If httpStatus = 200 Then GetHTTP = Left$(httpObject.responseText,16000) Else GetHTTP = "" End If End Function Public Function GetFile(httpURL As String, filename As String) As Boolean Dim session As New NotesSession Dim retries As Integer Dim stream As NotesStream Dim flag As Boolean Dim responsebody As variant Dim cnt As Long Dim buffer As String Dim tmp As Byte Set stream = session.CreateStream retries = 0 Do If retries>1 Then Sleep 1 ' After the two first calls, introduce a 1 second delay betwen each additional call End If retries = retries + 1 Call httpObject.open("GET", httpURL, False) Call httpObject.send() httpStatus = httpObject.Status If retries >= 10 Then httpStatus = 0 ' Timeout End If Loop Until httpStatus = 200 Or httpStatus > 500 Or httpStatus = 404 Or httpStatus = 0 If httpStatus = 200 Then flag = stream.Open(filename, "binary") If flag = False Then MsgBox "Failed to create " & filename & "..." GetFile = False Exit function End If responsebody = httpObject.ResponseBody ForAll r in responsebody tmp = r Call Stream.Write(Chr$(CInt(tmp))) cnt = cnt + 1 End ForAll MsgBox cnt GetFile = True Else GetFile = False End If End Function Private Function getString(ByVal StringBin As string) Dim intCount As Long getString ="" For intCount = 1 To LenB(StringBin) getString = getString & Chr( Asc(MidB(StringBin, intCount, 1)) ) Next End Function End Class