ADODB.Stream創建UTF-8+BOM編碼的文本文件。
然后遍歷數據區，格式化數據，輸出即可。
小數據還行，大數據沒測試。
另，使用fso創建的文本文件編碼為ANSI，ajax解析json時出現亂碼無法正常解析。
Sub ToJson() '創建UTF8文本文件
myrange = Worksheets("sheet1").UsedRange '通過有效數據區來選擇數據
'myrange = ActiveWorkbook.Names("schoolinfo").RefersToRange '通過定義的名稱來選擇數據
'myrange = Range(Worksheets("sheet1").Range("a1").End(xlDown), Worksheets("sheet1").Range("a1").End(xlToRight)) '通過標題行的最大行最大列來選擇數據
Total = UBound(myrange, 1) '獲取行數
Fields = UBound(myrange, 2) '獲取列數
Dim objStream As Object
Set objStream = CreateObject("ADODB.Stream")
With objStream
.Type = 2
.Charset = "UTF-8"
.Open
.WriteText "{""total"":" Total ",""contents"":["
For i = 2 To Total
.WriteText "{"
For j = 1 To Fields
.WriteText """" myrange(1, j) """:""" Replace(myrange(i, j), """", "\""") """"
If j > Fields Then
.WriteText ","
End If
Next
If i = Total Then
.WriteText "}"
Else
.WriteText "},"
End If
Next
.WriteText "]}"
.SaveToFile ActiveWorkbook.FullName ".json", 2
End With
Set objStream = Nothing
End Sub
最近在寫一網站網頁,需要從后臺ASP網頁查詢到的MYSQL記錄集返回給前臺ASP網頁,我們知道AJAX是無力從后臺返回數據庫記錄集給前臺網頁的.
查閱大量資料,就目前而言記錄集轉換成JSON格式流,再由前臺VBA導入WEBoffice控件的excel是個不錯的選擇.經過些思考,現將function過程代碼奉獻給大家.
Function GetJSON(Rs)
Dim JSON
dim returnStr
dim i
dim oneRecord
if Rs.eof=false and Rs.Bof=false then
returnStr="{ "chr(34)"records"chr(34)":["
while Rs.eof=false
for i=0 to Rs.Fields.Count -1
oneRecord=oneRecord chr(34) Rs.Fields(i).Name chr(34) ":"
oneRecord=oneRecord chr(34) Rs.Fields(i).Value chr(34) ","
Next
oneRecord=left(oneRecord,InStrRev(oneRecord,",")-1)
oneRecord=oneRecord "},"
returnStr=returnStr oneRecord
Rs.MoveNext
Wend
returnStr=left(returnStr,InStrRev(returnStr,",")-1)
returnStr=returnStr "]}"
end if
GetJSON=returnStr
End Function
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