如何在没有外部库的情况下使用 VBA 解析 JSON? [英] How to parse JSON with VBA without external libraries?

问题描述

我有一个像下面这样的json:

I have a json like below:

{"sentences":[{"trans":"something ru","orig":"english word","translit":"Angliyskoye slovo","src_translit":""}], "src":"en","server_time":69}

并解析它:

Function jsonDecode(jsonString As Variant)
    Set sc = CreateObject("ScriptControl"): sc.Language = "JScript"
    Set jsonDecode = sc.Eval("(" + jsonString + ")")
End Function

Set arr = jsonDecode(txt)

结果 arr 包含如下值(在 Watches 中检查):

In result arr contains values like below (checked at Watches):

arr
 - sentences (type: Variant/Object/JScriptTypeInfo)
  - 0 (type: Variant/Object/JScriptTypeInfo)
    - orig (type: Variant/String)
    - trans (type: Variant/String)
    ...
  - Item 1 (type: Variant/Object/JScriptTypeInfo)
    - orig (type: Variant/String)
    - trans (type: Variant/String)
    ...
 - server_time
 - src

arr.src 运行良好，但我怎样才能获得 arr.sentences(0).trans?首先，VBA 将 sentences 替换为 Sentences，其次(当我尝试手动更改 json 时)它仍然不允许使用 sentences(0).

arr.src works well, but how can I get arr.sentences(0).trans? Firstly, VBA replaces sentences with Sentences, secondly (when I've tried to change the json manually) it still doesn't allow to use sentenses(0).

推荐答案

我发现这个脚本示例很有用(来自 http://www.mrexcel.com/forum/excel-questions/898899-json-api-excel.html#post4332075 ):

I've found this script example useful (from http://www.mrexcel.com/forum/excel-questions/898899-json-api-excel.html#post4332075 ):

Sub getData()

    Dim Movie As Object
    Dim scriptControl As Object

    Set scriptControl = CreateObject("MSScriptControl.ScriptControl")
    scriptControl.Language = "JScript"

    With CreateObject("MSXML2.XMLHTTP")
        .Open "GET", "http://www.omdbapi.com/?t=frozen&y=&plot=short&r=json", False
        .send
        Set Movie = scriptControl.Eval("(" + .responsetext + ")")
        .abort
        With Sheets(2)
            .Cells(1, 1).Value = Movie.Title
            .Cells(1, 2).Value = Movie.Year
            .Cells(1, 3).Value = Movie.Rated
            .Cells(1, 4).Value = Movie.Released
            .Cells(1, 5).Value = Movie.Runtime
            .Cells(1, 6).Value = Movie.Director
            .Cells(1, 7).Value = Movie.Writer
            .Cells(1, 8).Value = Movie.Actors
            .Cells(1, 9).Value = Movie.Plot
            .Cells(1, 10).Value = Movie.Language
            .Cells(1, 11).Value = Movie.Country
            .Cells(1, 12).Value = Movie.imdbRating
        End With
    End With

End Sub

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