Android Question Http Poststring JSON URL Encoding

lip

Active Member
Licensed User
I am able to transfer SQLite records one at a time with HTtP using Posstring with a string like
iD=1&name=David

My co-developer at the server end is using .net and he reads the Post and inserts/updates a SQL record.

My problem comes when I try to use JSON ie something like:
Username=user&password=password&UploadJSON=[{ID:1},{name:David}]

I have used log(myPoststring) immediately before Job1.Poststring(myurl,myPoststring) and I see the JSON object included in the string as above

However, at the server end we log the received string as:-
Username=user&password=password&UploadJSON=%22%7ID%141%8......%23

We cannot work out where, how or why the JSON part of the string is being url encoded when the first part of the string is not being encoded.

I realise that this could be happening at the server end but my web developer is adamant that this is how the string is received.

Any advice, or ammunition, much appreciated
 

lip

Active Member
Licensed User
HttpUtils2 (or HttpClient) doesn't modify the message in any way.

Have you tried to url-encode the json string with StringUtils?
I am using the JSonGenerator. Do I need StringUtils tool?


B4X:
Sub CloudSyncDevice As Int
   
    'Record Sync Time
    Dim LastSynced As Long
        LastSynced = Subs.GetParamIntLong("LastSyncDateDevice")
    Dim DeviceToSyncC As Cursor
        DeviceToSyncC = Main.WiE3SQL.ExecQuery("SELECT DeviceSN, Drawing, PosTop, PosLeft, DeviceType, ApplicationID, ConfigByte, ConfigOptions, MinDaylightLevel FROM Device WHERE DeviceSN > 1000 AND LastEdit > " & LastSynced)
    If DeviceToSyncC.RowCount = 0 Then
        DeviceToSyncC.Close
        Return 0
    Else
        'Create a List of Device Maps
        Dim DeviceList As List
            DeviceList.Initialize
        For i = 0 To DeviceToSyncC.RowCount - 1
            DeviceToSyncC.Position = i
            Dim DeviceRecord As Map
                DeviceRecord.Initialize
                DeviceRecord.Put("DeviceSN",DeviceToSyncC.GetInt("DeviceSN"))
                DeviceRecord.Put("Drawing",DeviceToSyncC.GetString("Drawing"))
                DeviceRecord.Put("PosTop",DeviceToSyncC.GetInt("PosTop"))
                DeviceRecord.Put("PosLeft",DeviceToSyncC.GetInt("PosLeft"))
                DeviceRecord.Put("DeviceType",DeviceToSyncC.GetInt("DeviceType"))
                DeviceRecord.Put("DeviceTypeID",DeviceToSyncC.GetInt("ApplicationID"))
                DeviceRecord.Put("ConfigByte",DeviceToSyncC.GetInt("ConfigByte"))
                DeviceRecord.Put("ConfigOptions",DeviceToSyncC.GetInt("ConfigOptions"))
                DeviceRecord.Put("MinDaylightLevel",DeviceToSyncC.GetInt("MinDaylightLevel"))
            DeviceList.Add(DeviceRecord)
        Next
       
        'Create the JSON Object
        Dim DeviceJSON As JSONGenerator
            DeviceJSON.Initialize2(DeviceList)
       
        If Main.CloudConnected AND Main.CloudEnabled Then
            ToastMessageShow("JSON for " & DeviceToSyncC.RowCount & " Devices Sent to " & "DeviceUpload.aspx",False)
            Dim myTimeStored As Long
                myTimeStored = DateTime.Now
           
            'Create String to Post
            Dim myPostString As String
                myPostString = "PostCode=" & Main.ActivePostcode & _
                "&UserID=1" & _
                "&Collator=" & Main.AndroidID & _
                "&TimeStored=" & myTimeStored & _
                "&DeviceJSON=" & DeviceJSON.ToString
           
            'Initialise HTTP Job
            Dim Job1 As HttpJob
                Job1.Initialize("JobUploadDeviceJSON",Me)
                'Default timeout is 30 seconds.  Use line below to change it
                'Job1.GetRequest.Timeout = 30000
            Log(myPostString)
           
            'Post the String inc JSON
            Job1.PostString(Main.HTTPServer & "DeviceUpload.aspx",myPostString)
        End If
       
        'Get Sync Count before closing cursor
        Dim myDevicesSynced As Int
            myDevicesSynced = DeviceToSyncC.RowCount
       
        'Close Cursor and Return
        DeviceToSyncC.Close
        Return myDevicesSynced
    End If
End Sub
 
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