在訪問VBA中使用MSXML2.XMLHTTP不提取所有頁面數據

Question

目前，我們使用下面提到的代碼進行數據提取，但是代碼沒有從網頁中提取完整的數據，代碼忽略了當我在Internet Explorer上啟用java腳本和DOM存儲時可見的數據。

到目前為止我使用下面提到的代碼，尾隨代碼是從網頁中提取所有接受圖像的東西。

我的代碼受到了打擊。

Set http = CreateObject("MSXML2.XMLHTTP")

    http.Send
    html.body.innerHTML = http.ResponseText

    On Error GoTo 0
    html1 = html.body.innerHTML
     brand5 = html.documentElement.innerHTML
     If html1 Like "*media__thumb*" Then
other_img = html.getElementsByClassName("media__thumb")(0).innerText
'other_img = other_img.innerHTML
End If

在網頁上有多個圖像html代碼如下（請注意我的上述代碼不是從下面提到的html代碼中提取數據。

            <a class="media__thumbnail" data-media_type="IMAGE" data-media_id="orbit-bagged-53017-64" data-target="IMAGE" data-has-index="true">
                <img src="https://images.yourweb/_145.jpg">
            </a>
            <a class="media__thumbnail media__thumbnail--selected" data-media_type="IMAGE" data-media_id="orbit-bagged-53017-e1" data-target="IMAGE" data-has-index="true">
                <img src="https://images.yourweb1_145.jpg">
            </a>
            </span></a>

http.response如下

<div id="thumbnails" class="media__thumbnails" data-component="thumbnails"></div>

    <script type="text/template" id="media__thumbnails">
        {{#thumbnails}}
            <a class="media__thumbnail" data-media_type="{{type}}" data-media_id="{{id}}" data-target="{{type}}" data-has-index="true">
                <img src="{{{thumb}}}"/>
                {{# hasIcon}}
                  {{# threeSixtyIcon}} <div class="whitespace"><span class="threesixtyIcon"></span></div>{{/ threeSixtyIcon}}
                  {{^ threeSixtyIcon}} <span class="videoIcon"></span>{{/ threeSixtyIcon}}
                {{/ hasIcon}}
            </a>
        {{/thumbnails}}
        {{#additionalThumbnailsThumbnail}}
            <a class="media__thumbnail media__thumbnail-additional-count" data-media_type="{{type}}" data-media_id="{{id}}" data-target="{{type}}" data-has-index="true">
                <img src="{{{thumb}}}"/>
                {{# hasIcon}}
                  {{# threeSixtyIcon}} <div class="whitespace"><span class="threesixtyIcon"></span></div>{{/ threeSixtyIcon}}
                  {{^ threeSixtyIcon}} <span class="videoIcon"></span>{{/ threeSixtyIcon}}
                {{/ hasIcon}}
                {{#additionalImagesCount}}
                    <div class="media__thumbnail-overlay"></div>
                    <span class="media__thumbnail-count">+{{additionalImagesCount}}</span>
                {{/additionalImagesCount}}
            </a>

Answer 1

該內容需要在頁面上運行javascript，因此您需要：

1. 在網絡流量中搜索這些網址的那些部分的信息，看看你是否從其他地方獲得（你可以 - 如下所示）; 要么，
2. 自動化瀏覽器，例如使用微軟互聯網控件

您可以從以下內容中看到內容是動態加載的：

  <script type="text/template" id="media__thumbnails"> {{#thumbnails}} <a class="media__thumbnail" data-media_type="{{type}}" data-media_id="{{id}}" data-target="{{type}}" data-has-index="true"> <img src="{{{thumb}}}"/> {{# hasIcon}} {{# threeSixtyIcon}} <div class="whitespace"><span class="threesixtyIcon"></span></div>{{/ threeSixtyIcon}} {{^ threeSixtyIcon}} <span class="videoIcon"></span>{{/ threeSixtyIcon}} {{/ hasIcon}} </a> {{/thumbnails}} {{#additionalThumbnailsThumbnail}} ...... {{/additionalThumbnails}} </script> <script type="text/template" 

---

1）網絡選項卡 - 不同的網址

使用網絡選項卡中找到的不同URL返回包含鏈接的json。 響應是json所以需要一個jsonparser 。

'VBE>Tools> References> Add reference to Microsoft Scripting Runtime
'Download and add in jsonconverter.bas from https://github.com/VBA-tools/VBA-JSON/blob/master/JsonConverter.bas

將converter.bas代碼放在module2中並注釋掉該行： Attribute VB_Name = "JsonConverter"

在module1中放置GetInfo子。

Option Compare Database
Option Explicit
Public Sub GetInfo()
    Dim json As Object, url1 As String, url2 As String, url3 As String

    With CreateObject("MSXML2.XMLHTTP")
        .Open "GET", "https://www.homedepot.com/p/svcs/frontEndModel/100001020?_=1556447908065", False
        .send
        Set json = Module2.ParseJson(.responseText)
    End With
    'Parse json object (see paths shown below for example)
     url1 = json("primaryItemData")("media")("mediaList")(2)("location")
     url2 = json("primaryItemData")("media")("mediaList")(3)("location")
     url3 = json("primaryItemData")("media")("mediaList")(4)("location")   'example
    Stop '<==delete me later
End Sub

前3個縮略圖的路徑：

json►primaryItemData►media►mediaList►2►location
json►primaryItemData►media►mediaList►3►location
json►primaryItemData►media►mediaList►4►location

在這里探索json。

---

2）自動瀏覽器（IE版）：

'VBE > Tools > References:
' Microsoft Internet Controls
Public Sub GetImageLinks()
    Dim ie As New InternetExplorer, images As Object, i As Long
    With ie
        .Visible = True
        .Navigate2 "https://www.homedepot.com/p/Orbit-Sandstone-Rock-Valve-Box-Cover-53017/100001020"

        While .Busy Or .readyState < 4: DoEvents: Wend
        Set images = .document.querySelectorAll(".media__thumbnail img")

        For i = 0 To images.Length - 1
            Debug.Print images.item(i).src
        Next

        Stop
        .Quit
    End With
End Sub