(Classic ASP) Download File from Dropbox into a String Variable

Demonstrates how to download a file from Dropbox directly into a string variable.

Note: This example requires Chilkat v11.0.0 or greater.

Chilkat ActiveX Downloads

ActiveX for 32-bit and 64-bit Windows

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
</head>
<body>
<%
success = 0

' This example requires the Chilkat API to have been previously unlocked.
' See Global Unlock Sample for sample code.

' A Dropbox access token should have been previously obtained.
' Dropbox access tokens do not expire.
' See Dropbox Access Token.

set rest = Server.CreateObject("Chilkat.Rest")

' Connect to Dropbox
success = rest.Connect("content.dropboxapi.com",443,1,1)
If (success = 0) Then
    Response.Write "<pre>" & Server.HTMLEncode( rest.LastErrorText) & "</pre>"
    Response.End
End If

' Add request headers.
success = rest.AddHeader("Authorization","Bearer DROPBOX_ACCESS_TOKEN")

' The download "parameters" are contained in JSON passed in an HTTP request header.
' This is the JSON indicating the file to be downloaded:
' { 
'    "path": "/jack.txt",
' }

set json = Server.CreateObject("Chilkat.JsonObject")
success = json.AppendString("path","/jack.txt")
success = rest.AddHeader("Dropbox-API-Arg",json.Emit())

' The content of the file on Dropbox is returned.
fileContent = rest.FullRequestNoBody("POST","/2/files/download")
If (rest.LastMethodSuccess = 0) Then
    Response.Write "<pre>" & Server.HTMLEncode( rest.LastErrorText) & "</pre>"
    Response.End
End If

' When successful, Dropbox responds with a 200 response code.
If (rest.ResponseStatusCode <> 200) Then
    ' Examine the request/response to see what happened.
    Response.Write "<pre>" & Server.HTMLEncode( "response status code = " & rest.ResponseStatusCode) & "</pre>"
    Response.Write "<pre>" & Server.HTMLEncode( "response status text = " & rest.ResponseStatusText) & "</pre>"
    Response.Write "<pre>" & Server.HTMLEncode( "response header: " & rest.ResponseHeader) & "</pre>"
    Response.Write "<pre>" & Server.HTMLEncode( "response body (if any): " & fileContent) & "</pre>"
    Response.Write "<pre>" & Server.HTMLEncode( "---") & "</pre>"
    Response.Write "<pre>" & Server.HTMLEncode( "LastRequestStartLine: " & rest.LastRequestStartLine) & "</pre>"
    Response.Write "<pre>" & Server.HTMLEncode( "LastRequestHeader: " & rest.LastRequestHeader) & "</pre>"
    Response.End
End If

' Show the file content that was downloaded:
Response.Write "<pre>" & Server.HTMLEncode( fileContent) & "</pre>"
Response.Write "<pre>" & Server.HTMLEncode( "----") & "</pre>"

' Information about the downloaded file is also available as JSON in a response header.
' The "dropbox-api-result" response header contains the information.  For example:
apiResult = rest.ResponseHdrByName("dropbox-api-result")
Response.Write "<pre>" & Server.HTMLEncode( apiResult) & "</pre>"

' In this case, the pretty-formatted dropbox-api-result JSON looks like this:
' { 
'   "name": "jack.txt",
'   "path_lower": "/jack.txt",
'   "path_display": "/jack.txt",
'   "id": "id:yqx4-tE_NKAAAAAAAAAAAQ",
'   "client_modified": "2016-06-02T20:42:11Z",
'   "server_modified": "2016-06-02T20:42:11Z",
'   "rev": "8482db15f",
'   "size": 42
' }

' Load the JSON, pretty-print it, and demonstrate how to get some values...
set jsonResult = Server.CreateObject("Chilkat.JsonObject")
jsonResult.EmitCompact = 0
success = jsonResult.Load(apiResult)
' Show the JSON pretty-printed...
Response.Write "<pre>" & Server.HTMLEncode( jsonResult.Emit()) & "</pre>"

' Sample code to get data from the JSON response:
size = jsonResult.IntOf("size")
Response.Write "<pre>" & Server.HTMLEncode( "size = " & size) & "</pre>"

rev = jsonResult.StringOf("rev")
Response.Write "<pre>" & Server.HTMLEncode( "rev = " & rev) & "</pre>"

clientModified = jsonResult.StringOf("client_modified")
set ckdt = Server.CreateObject("Chilkat.CkDateTime")
success = ckdt.SetFromTimestamp(clientModified)
bLocalTime = 1
set dt = Server.CreateObject("Chilkat.DtObj")
ckdt.ToDtObj bLocalTime,dt

Response.Write "<pre>" & Server.HTMLEncode( dt.Day & "/" & dt.Month & "/" & dt.Year & " " & dt.Hour _
     & ":" & dt.Minute) & "</pre>"

%>
</body>
</html>