大纲：
实际上，每次打开该网页时，网络浏览器都会执行几乎相同的操作。
您可以使用下面的 VBA 代码来解析响应和输出结果。将JSON.bas模块导入VBA项目进行JSON处理。
Sub TestScrapeWunderground()
Dim sContent As String
Dim sKey As String
Dim sLocation As String
Dim vJSON As Variant
Dim sState As String
Dim oDays As Object
Dim oHours As Object
Dim vDay As Variant
Dim vHour As Variant
Dim aRows() As Variant
Dim aHeader() As Variant
' GET XHR to retrieve location and key
With CreateObject("MSXML2.ServerXMLHTTP")
.Open "GET", "https://www.wunderground.com/cgi-bin/findweather/getForecast?query=EIDW", False
.Send
sContent = .responseText
End With
' Extract location and key from HTML content
sLocation = Split(Split(sContent, "var query = 'zmw:' + '", 2)(1), "'", 2)(0)
sKey = Split(Split(sContent, vbTab & "k: '", 2)(1), "'", 2)(0)
' GET XHR to retrieve JSON data
With CreateObject("MSXML2.ServerXMLHTTP")
.Open "GET", "https://api-ak-aws.wunderground.com/api/" & sKey & "/forecast10day/hourly10day/labels/conditions/astronomy10day/lang:en/units:metric/v:2.0/bestfct:1/q/zmw:" & sLocation & ".json", False
.Send
sContent = .responseText
End With
' Parse JSON response to data structure
JSON.Parse sContent, vJSON, sState
' Populate dictionaries with daily and hourly forecast data
Set oDays = CreateObject("Scripting.Dictionary")
Set oHours = CreateObject("Scripting.Dictionary")
For Each vDay In vJSON("forecast")("days")
oDays(vDay("summary")) = ""
For Each vHour In vDay("hours")
oHours(vHour) = ""
Next
Next
' Convert daily forecast data to arrays
JSON.ToArray oDays.Keys(), aRows, aHeader
' Output daily forecast data to table
With Sheets(1)
.Cells.Delete
OutputArray .Cells(1, 1), aHeader
Output2DArray .Cells(2, 1), aRows
.Columns.AutoFit
End With
' Convert hourly forecast data to arrays
JSON.ToArray oHours.Keys(), aRows, aHeader
' Output hourly forecast data to table
With Sheets(2)
.Cells.Delete
OutputArray .Cells(1, 1), aHeader
Output2DArray .Cells(2, 1), aRows
.Columns.AutoFit
End With
' Convert response data to arrays
JSON.ToArray Array(vJSON("response")), aRows, aHeader
' Output response transposed data to table
With Sheets(3)
.Cells.Delete
Output2DArray .Cells(1, 1), WorksheetFunction.Transpose(aHeader)
Output2DArray .Cells(1, 2), WorksheetFunction.Transpose(aRows)
.Columns.AutoFit
End With
' Convert current data to arrays
JSON.ToArray Array(vJSON("current_observation")), aRows, aHeader
' Output current transposed data to table
With Sheets(4)
.Cells.Delete
Output2DArray .Cells(1, 1), WorksheetFunction.Transpose(aHeader)
Output2DArray .Cells(1, 2), WorksheetFunction.Transpose(aRows)
.Columns.AutoFit
End With
' Populate dictionary with daily astronomy data
Set oDays = CreateObject("Scripting.Dictionary")
For Each vDay In vJSON("astronomy")("days")
oDays(vDay) = ""
Next
' Convert daily astronomy data to arrays
JSON.ToArray oDays.Keys(), aRows, aHeader
' Output daily astronomy transposed data to table
With Sheets(5)
.Cells.Delete
Output2DArray .Cells(1, 1), WorksheetFunction.Transpose(aHeader)
Output2DArray .Cells(1, 2), WorksheetFunction.Transpose(aRows)
.Columns.AutoFit
End With
' Convert hourly history data to arrays
JSON.ToArray vJSON("history")("days")(0)("hours"), aRows, aHeader
' Output hourly history data to table
With Sheets(6)
.Cells.Delete
OutputArray .Cells(1, 1), aHeader
Output2DArray .Cells(2, 1), aRows
.Columns.AutoFit
End With
MsgBox "Completed"
End Sub
Sub OutputArray(oDstRng As Range, aCells As Variant)
With oDstRng
.Parent.Select
With .Resize( _
1, _
UBound(aCells) - LBound(aCells) + 1)
.NumberFormat = "@"
.Value = aCells
End With
End With
End Sub
Sub Output2DArray(oDstRng As Range, aCells As Variant)
With oDstRng
.Parent.Select
With .Resize( _
UBound(aCells, 1) - LBound(aCells, 1) + 1, _
UBound(aCells, 2) - LBound(aCells, 2) + 1)
.NumberFormat = "@"
.Value = aCells
End With
End With
End Sub
第二个 XHR 返回 JSON 数据，为了说明如何从中提取必要的数据，您可以将 JSON 保存到文件，复制内容并将其粘贴到任何 JSON 查看器以供进一步研究。我使用在线工具http://jsonviewer.stack.hu，根元素结构如下图：
有6个主要部分，数据的相关部分被提取并输出到6个工作表（必须在运行前手动创建）：
Sheet1 - Daily forecast
Sheet2 - Horly forecast
Sheet3 - Response data (transposed)
Sheet4 - Current data (transposed)
Sheet5 - Astronomy (transposed)
Sheet6 - Hourly history data
通过该示例，您可以从该 JSON 响应中提取所需的数据。