excel - 当一切完成后，Scraper 会抛出错误而不是退出浏览器

Question

我编写了一个抓取工具来解析来自 torrent 站点的电影信息。我使用了 IE 和 queryselector。

我的代码确实解析了所有内容。当一切完成后，它会抛出错误而不是退出浏览器。如果我取消错误框，我就可以看到结果。

完整代码如下:

Sub Torrent_Data()
    Dim IE As New InternetExplorer, html As HTMLDocument
    Dim post As Object

    With IE
        .Visible = False
        .navigate "https://yts.am/browse-movies"
        Do While .readyState <> READYSTATE_COMPLETE: Loop
        Set html = .Document
    End With

    For Each post In html.querySelectorAll(".browse-movie-bottom")
        Row = Row + 1: Cells(Row, 1) = post.queryselector(".browse-movie-title").innerText
        Cells(Row, 2) = post.queryselector(".browse-movie-year").innerText
    Next post
    IE.Quit
End Sub

我上传了两张图片来显示错误。

两个错误同时出现。

我使用的是 Internet Explorer 11。

如果我像下面这样尝试，它会成功地带来结果，没有任何问题。

Sub Torrent_Data()
    Dim IE As New InternetExplorer, html As HTMLDocument
    Dim post As Object

    With IE
        .Visible = False
        .navigate "https://yts.am/browse-movies"
        Do While .readyState <> READYSTATE_COMPLETE: Loop
        Set html = .Document
    End With

    For Each post In html.getElementsByClassName("browse-movie-bottom")
        Row = Row + 1: Cells(Row, 1) = post.queryselector(".browse-movie-title").innerText
        Cells(Row, 2) = post.queryselector(".browse-movie-year").innerText
    Next post
    IE.Quit
End Sub

添加到库中的引用:

1. Microsoft Internet Controls
2. Microsoft HTML Object Library

是否有任何引用可以添加到库中以消除错误？

Answer 1

好的，所以该网页有一些非常不友好的地方。它对我来说一直崩溃。因此，我求助于在脚本引擎/脚本控件中运行 JavaScript 程序，并且它有效。

希望大家能够关注。逻辑位于添加到 ScriptEngine 的 javascript 中。我得到两个节点列表，一个电影列表和一个年份列表；然后我同步遍历每个数组并将它们作为键值对添加到 Microsoft 脚本字典中。

Option Explicit

'*Tools->References
'*    Microsoft Scripting Runtime
'*    Microsoft Scripting Control
'*    Microsoft Internet Controls
'*    Microsoft HTML Object Library

Sub Torrent_Data()
    Dim row As Long
    Dim IE As New InternetExplorer, html As HTMLDocument
    Dim post As Object

    With IE
        .Visible = True
        .navigate "https://yts.am/browse-movies"
        Do While .readyState <> READYSTATE_COMPLETE:
            DoEvents
        Loop
        Set html = .document
    End With

    Dim dicFilms As Scripting.Dictionary
    Set dicFilms = New Scripting.Dictionary

    Call GetScriptEngine.Run("getMovies", html, dicFilms)

    Dim vFilms As Variant
    vFilms = dicFilms.Keys

    Dim vYears As Variant
    vYears = dicFilms.Items

    Dim lRowLoop As Long
    For lRowLoop = 0 To dicFilms.Count - 1

        Cells(lRowLoop + 1, 1) = vFilms(lRowLoop)
        Cells(lRowLoop + 1, 2) = vYears(lRowLoop)

    Next lRowLoop

    Stop

    IE.Quit
End Sub

Private Function GetScriptEngine() As ScriptControl
    '* see code from this SO Q & A
    ' https://stackoverflow.com/questions/37711073/in-excel-vba-on-windows-how-to-get-stringified-json-respresentation-instead-of
    Static soScriptEngine As ScriptControl
    If soScriptEngine Is Nothing Then
        Set soScriptEngine = New ScriptControl
        soScriptEngine.Language = "JScript"

        soScriptEngine.AddCode "function getMovies(htmlDocument, microsoftDict) { " & _
                                    "var titles = htmlDocument.querySelectorAll('a.browse-movie-title'), i;" & _
                                    "var years = htmlDocument.querySelectorAll('div.browse-movie-year'), j;" & _
                                    "if ( years.length === years.length) {" & _
                                    "for (i=0; i< years.length; ++i) {" & _
                                    "   var film = titles[i].innerText;" & _
                                    "   var year = years[i].innerText;" & _
                                    "   microsoftDict.Add(film, year);" & _
                                    "}}}"

    End If
    Set GetScriptEngine = soScriptEngine
End Function