POST 请求在 VBA 中不起作用XML HTTP

分类：编程问答

如何解决POST 请求在 VBA 中不起作用XML HTTP

我正在处理从网络中提取 JSON 数据的 xmlHTTP 请求。

下面是我的代码。

    Public Sub testlibor2()
        Dim JSON As Object
        Dim ws As Worksheet,results(),i As Long,s As String
        Dim BL As String
        Dim mypara As String
        Dim mydest As String
        Dim URL,URL1,URL2,URL3 As String
    
        URL1 = "draw=1&columns%5B0%5D%5Bdata%5D=0&columns%5B0%5D%5Bname%5D=wdt_ID&columns%5B0%5D%5Bsearchable%5D=true&columns%5B0%5D%5Borderable%5D=true&columns%5B0%5D%5Bsearch%5D%5Bvalue%5D=&columns%5B0%5D%5Bsearch%5D%5Bregex%5D=false&columns%5B1%5D%5Bdata%5D=1&columns%5B1%5D%5Bname%5D=date&columns%5B1%5D%5Bsearchable%5D=true&columns%5B1%5D%5Borderable%5D=true&columns%5B1%5D%5Bsearch%5D%5Bvalue%5D=&columns%5B1%5D%5Bsearch%5D%5Bregex%5D=false&columns%5B2%5D%5Bdata%5D=2&columns%5B2%5D%5Bname%5D=weekday&columns%5B2%5D%5Bsearchable%5D=true&columns%5B2%5D%"
        URL2 = "5Borderable%5D=true&columns%5B2%5D%5Bsearch%5D%5Bvalue%5D=&columns%5B2%5D%5Bsearch%5D%5Bregex%5D=false&columns%5B3%5D%5Bdata%5D=3&columns%5B3%5D%5Bname%5D=o&columns%5B3%5D%5Bsearchable%5D=true&columns%5B3%5D%5Borderable%5D=true&columns%5B3%5D%5Bsearch%5D%5Bvalue%5D=&columns%5B3%5D%5Bsearch%5D%5Bregex%5D=false&columns%5B4%5D%5Bdata%5D=4&columns%5B4%5D%5Bname%5D=wdt_column&columns%5B4%5D%5Bsearchable%5D=true&columns%5B4%5D%5Borderable%5D=true&columns%5B4%5D%5Bsearch%5D%5Bvalue%5D=&columns%5B4%5D%5Bsearch%5D%5Bregex%5D=false&columns%5B5%5D%5Bdata%5D=5&columns%5B5%5D%5Bname%5D=wdt_column_1&columns%5B5%5D%5Bsearchable%5D=true&columns%5B5%5D%5Borderable%5D=true&columns%5B5%5D%5Bsearch%5D%5Bvalue%5D=&columns%5B5%5D%5Bsearch%5D%5Bregex%5D=false&columns%5B6%5D%5Bdata%5D=6&columns%5B6%5D%5Bname%5D=1m&columns%5B6%5D%5Bsearchable%"
        URL3 = "5D=true&columns%5B6%5D%5Borderable%5D=true&columns%5B6%5D%5Bsearch%5D%5Bvalue%5D=&columns%5B6%5D%5Bsearch%5D%5Bregex%5D=false&columns%5B7%5D%5Bdata%5D=7&columns%5B7%5D%5Bname%5D=wdt_column_2&columns%5B7%5D%5Bsearchable%5D=true&columns%5B7%5D%5Borderable%5D=true&columns%5B7%5D%5Bsearch%5D%5Bvalue%5D=&columns%5B7%5D%5Bsearch%5D%5Bregex%5D=false&columns%5B8%5D%5Bdata%5D=8&columns%5B8%5D%5Bname%5D=3m&columns%5B8%5D%5Bsearchable%5D=true&columns%5B8%5D%5Borderable%5D=true&columns%5B8%5D%5Bsearch%5D%5Bvalue%5D=&columns%5B8%5D%5Bsearch%5D%5Bregex%5D=false&columns%5B9%5D%5Bdata%5D=9&columns%5B9%5D%5Bname%5D=wdt_column_3&columns%5B9%5D%5Bsearchable%5D=true&columns%5B9%5D%5Borderable%5D=true&columns%5B9%5D%5Bsearch%5D%5Bvalue%5D=&columns%5B9%5D%5Bsearch%5D%5Bregex%5D=false&columns%5B10%5D%5Bdata%5D=10&columns%"
        URL4 = "5B10%5D%5Bname%5D=wdt_column_4&columns%5B10%5D%5Bsearchable%5D=true&columns%5B10%5D%5Borderable%5D=true&columns%5B10%5D%5Bsearch%5D%5Bvalue%5D=&columns%5B10%5D%5Bsearch%5D%5Bregex%5D=false&columns%5B11%5D%5Bdata%5D=11&columns%5B11%5D%5Bname%5D=6m&columns%5B11%5D%5Bsearchable%5D=true&columns%5B11%5D%5Borderable%5D=true&columns%5B11%5D%5Bsearch%5D%5Bvalue%5D=&columns%5B11%5D%5Bsearch%5D%5Bregex%5D=false&columns%5B12%5D%5Bdata%5D=12&columns%5B12%5D%5Bname%5D=wdt_column_5&columns%5B12%5D%5Bsearchable%5D=true&columns%5B12%5D%5Borderable%5D=true&columns%5B12%5D%5Bsearch%5D%5Bvalue%5D=&columns%5B12%5D%5Bsearch%5D%5Bregex%5D=false&columns%5B13%5D%5Bdata%5D=13&columns%5B13%5D%5Bname%5D=wdt_column_6&columns%5B13%5D%5Bsearchable%5D=true&columns%5B13%5D%5Borderable%5D=true&columns%5B13%5D%5Bsearch%5D%5Bvalue%5D=&column"
    
        mypara = URL1 & URL2 & URL3 & URL4
       
        With CreateObject("MSXML2.XMLHTTP")
            .Open "POST","http://iborate.com/wp-admin/admin-ajax.php?action=get_wdtable&table_id=12",False
            .setRequestHeader "Accept","application/json,text/javascript,*/*; q=0.01"
            .setRequestHeader "Content-Type","application/x-www-form-urlencoded; charset=UTF-8"
            .setRequestHeader "User-Agent","Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML,like Gecko) Chrome/87.0.4280.88 Safari/537.36"
            .send mypara
            Debug.Print .responseText
            Set JSON = JsonConverter.ParseJson(.responseText)
        End With
    
    End Sub

上面的代码根本不起作用。我无法从中接收任何 JSON 数据。

我已经根据 Chrome 开发工具中的详细信息调整了所有请求标头，并且我已经 完全不知道是什么问题。

原始网址如下。我正在尝试访问网络中的表格。

http://iborate.com/usd-libor/

谢谢！

另外一个问题。有没有其他方法可以处理太长而无法包含在一个变量中的 URL 字符串？我按如下方式划分字符串，但我不确定这是否是处理它的最佳方法。

更新

基于@QHarr 的想法，我将表单数据更改为 JSON 字符串。但是代码仍然不起作用。

Public Sub testlibor2()
Dim JSON As Object
Dim ws As Worksheet,s As String
Dim shipvalue As String,custom As String,MyURL As String
Dim BL As String
Dim mypara,newpara As String

Dim URL,URL3,URL4,URL5 As String

 
URL1 = "{""draw"":""2"",""columns[0][data]"":""0"",""columns[0][name]"":""wdt_ID"",""columns[0][searchable]"":""true"",""columns[0][orderable]"":""true"",""columns[0][search][value]"":"""",""columns[0][search][regex]"": ""false"",""columns[1][data]"": ""1"",""columns[1][name]"": ""date"",""columns[1][searchable]"": ""true"",""columns[1][orderable]"": ""true"",""columns[1][search][value]"": ""|"",""columns[1][search][regex]"": ""false"",""columns[2][data]"": ""2"",""columns[2][name]"": ""weekday"",""columns[2][searchable]"": ""true"",""columns[2][orderable]"":""true"",""columns[2][search][value]"": """","
URL2 = """columns[2][search][regex]"":""false"",""columns[3][data]"":""3"",""columns[3][name]"": ""o"",""columns[3][searchable]"": ""true"",""columns[3][orderable]"": ""true"",""columns[3][search][value]"": """",""columns[3][search][regex]"": ""false"",""columns[4][data]"": ""4"",""columns[4][name]"": ""wdt_column"",""columns[4][searchable]"": ""true"",""columns[4][orderable]"": ""true"",""columns[4][search][value]"": """",""columns[4][search][regex]"": ""false"",""columns[5][data]"": ""5"",""columns[5][name]"": ""wdt_column_1"",""columns[5][searchable]"": ""true"",""columns[5][orderable]"": ""true"",""columns[5][search][value]"": """",""columns[5][search][regex]"": ""false"",""columns[6][data]"": ""6"",""columns[6][name]"": ""1m"",""columns[6][searchable]"": ""true"",""columns[6][orderable]"": ""true"",""columns[6][search][value]"": """",""columns[6][search][regex]"": ""false"",""columns[7][data]"": ""7"",""columns[7][name]"": ""wdt_column_2"",""columns[7][searchable]"": ""true"","
URL3 = """columns[7][orderable]"": ""true"",""columns[7][search][value]"": """",""columns[7][search][regex]"": ""false"",""columns[8][data]"": ""8"",""columns[8][name]"": ""3m"",""columns[8][searchable]"": ""true"",""columns[8][orderable]"": ""true"",""columns[8][search][value]"": """",""columns[8][search][regex]"": ""false"",""columns[9][data]"": ""9"",""columns[9][name]"": ""wdt_column_3"",""columns[9][searchable]"": ""true"",""columns[9][orderable]"": ""true"",""columns[9][search][value]"": """",""columns[9][search][regex]"": ""false"",""columns[10][data]"": ""10"",""columns[10][name]"": ""wdt_column_4"",""columns[10][searchable]"": ""true"",""columns[10][orderable]"": ""true"",""columns[10][search][value]"": """",""columns[10][search][regex]"": ""false"",""columns[11][data]"": ""11"",""columns[11][name]"": ""6m"",""columns[11][searchable]"": ""true"",""columns[11][orderable]"": ""true"",""columns[11][search][value]"": """",""columns[11][search][regex]"": ""false"","
URL4 = """columns[12][data]"": ""12"",""columns[12][name]"": ""wdt_column_5"",""columns[12][searchable]"": ""true"",""columns[12][orderable]"": ""true"",""columns[12][search][value]"": """",""columns[12][search][regex]"": ""false"",""columns[13][data]"": ""13"",""columns[13][name]"": ""wdt_column_6"",""columns[13][searchable]"": ""true"",""columns[13][orderable]"": ""true"",""columns[13][search][value]"": """",""columns[13][search][regex]"": ""false"",""columns[14][data]"": ""14"",""columns[14][name]"": ""wdt_column_7"",""columns[14][searchable]"": ""true"",""columns[14][orderable]"": ""true"",""columns[14][search][value]"": """",""columns[14][search][regex]"": ""false"",""columns[15][data]"": ""15"",""columns[15][name]"": ""wdt_column_8"",""columns[15][searchable]"": ""true"",""columns[15][orderable]"": ""true"",""columns[15][search][value]"": """",""columns[15][search][regex]"": ""false"",""columns[16][data]"": ""16"",""columns[16][name]"": ""wdt_column_9"",""columns[16][searchable]"": ""true"","
URL5 = """columns[16][orderable]"": ""true"",""columns[16][search][value]"": """",""columns[16][search][regex]"": ""false"",""columns[17][data]"": ""17"",""columns[17][name]"": ""12m"",""columns[17][searchable]"": ""true"",""columns[17][orderable]"": ""true"",""columns[17][search][value]"": """",""columns[17][search][regex]"": ""false"",""order[0][column]"": ""1"",""order[0][dir]"": ""desc"",""start"": ""0"",""length"": ""10"",""search[value]"": """",""search[regex]"": ""false"",""wdtNonce"": ""ce62a523fa"",""sRangeSeparator"": ""|""}"

mypara = URL1 & URL2 & URL3 & URL4 & URL5
newpara = Replace(mypara," ","")
Debug.Print newpara


    
With CreateObject("MSXML2.XMLHTTP")
    .Open "POST",False
    .setRequestHeader "Accept",*/*; q=0.01"
    .setRequestHeader "Content-Type","application/x-www-form-urlencoded; charset=UTF-8"      
    .setRequestHeader "User-Agent",like Gecko) Chrome/87.0.4280.88 Safari/537.36"

    .setRequestHeader "Accept-Encoding","gzip,deflate"
    .send newpara
    Debug.Print .responseText
    Set JSON = JsonConverter.ParseJson(.responseText)
End With
End Sub

我已经检查了几次以确保 JSON 字符串与下面从 QHarr 建议的字符串完全相同。

谁能从这里找出解决方案？

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