我编写了代码,但是代码存在一些问题。
Option Explicit
Public Sub GetRestuarantInfo()
Dim s As String, re As Object, p As String, page As Long, r As String, json As Object
Const START_PAGE As Long = 2
Const END_PAGE As Long = 4
Const RESULTS_PER_PAGE As Long = 30
p = "\[{""@context"".*?\]"
Set re = CreateObject("VBScript.RegExp")
Application.ScreenUpdating = False
With CreateObject("MSXML2.XMLHTTP")
For page = START_PAGE To END_PAGE
.Open "GET", "https://www.yellowpages.com/atlanta-ga/restaurants?page=" & page, False
.send
If .Status = 200 Then
s = .responseText
r = GetValue(re, s, p)
If r <> "Not Found" Then
Set json = JsonConverter.ParseJson(r)
WriteOutResults page, RESULTS_PER_PAGE, json
End If
End If
Next
End With
Application.ScreenUpdating = True
End Sub
Public Sub WriteOutResults(ByVal page As Long, ByVal RESULTS_PER_PAGE As Long, ByVal json As Object)
Dim sheetName As String, results(), r As Long, headers(), ws As Worksheet
ReDim results(1 To RESULTS_PER_PAGE, 1 To 3)
sheetName = "page" & page
headers = Array("Name", "Website", "Tel")
If Not WorksheetExists(sheetName) Then
Set ws = ThisWorkbook.Worksheets.Add
ws.Name = sheetName
Else
ThisWorkbook.Worksheets(sheetName).Cells.ClearContents
End If
With ws
Dim review As Object
For Each review In json 'collection of dictionaries
r = r + 1
results(r, 1) = review("name")
results(r, 2) = review("url")
results(r, 3) = review("telephone")
Next
.Cells(1, 1).Resize(1, UBound(headers) + 1) = headers
.Cells(2, 1).Resize(UBound(results, 1), UBound(results, 2)) = results
End With
End Sub
Public Function GetValue(ByVal re As Object, inputString As String, ByVal pattern As String) As String
'https://regex101.com/r/M9oRON/1
With re
.Global = True
.MultiLine = True
.IgnoreCase = False
.pattern = pattern
If .Test(inputString) Then
GetValue = .Execute(inputString)(0)
Else
GetValue = "Not found"
End If
End With
End Function
Public Function WorksheetExists(ByVal sName As String) As Boolean '@Rory https://stackoverflow.com/a/28473714/6241235
WorksheetExists = Evaluate("ISREF('" & sName & "'!A1)")
End Function
由于我是网络抓取新手,请帮助解决问题。