Question

我有一个通过Web请求（http://www.coincap.io/history/365day/BTC）返回的多维JSON数组。我想遍历第二个条目并检索其嵌套值。

如果这是一个普通的数组，我会使用：

For Each item In response
    logic, logic, logic

    currentRow = currentRow + 1
Next

此Web请求返回带有3个条目的JSON响应：market_cap，price和volume。我只想循环通过response(1)并获取价格值。 price中的每个条目都包含两个键0和1。

我想我可以通过

来实现这一目标

For Each item in response(1)
    Cells(currentRow, 1).Value = item(0)
    Cells(currentRow, 2).Value = item(1)

    currentRow = currentRow + 1
Next

我也考虑过For Each item in response("price")。两者都不起作用。

Answer 1

Sub Tester()

    Dim json As String
    Dim sc As Object
    Dim o, n, i, p

    Set sc = CreateObject("scriptcontrol")
    sc.Language = "JScript"

    json = HttpGet("http://www.coincap.io/history/365day/BTC")

    sc.Eval "var obj=(" & json & ")" 'evaluate the json response
    'add a couple of accessor functions
    sc.AddCode "function numPrices(){return obj.price.length;}"
    sc.AddCode "function getPrice(i){return obj.price[i];}"

    n = sc.Run("numPrices")
    For i = 0 To n - 1
        p = Split(sc.Run("getPrice", i), ",")
        Debug.Print i, p(0), p(1)
    Next i

End Sub

Function HttpGet(url As String) As String
    Dim oHTML As Object
    Set oHTML = CreateObject("Microsoft.XMLHTTP")
    With oHTML
        .Open "GET", url, False
        .send
        HttpGet = .responsetext
    End With
End Function

在JSON响应中访问嵌套数组中的值

1 个答案: