Android Question Upload files/image from my B4A app to IIS server over the internet

Calvin Yee · Jan 16, 2019

I want to upload image from my B4A APP to IIS server over the internet or wifi.

I using code below:-
Private link As String = "https:\\web.abc.com.my\abcweb\Temp" =>This is IIS server setting
Private cc As ContentChooser

Sub btnSendFile_Click
cc.Show("*/*", "Choose file")
End Sub

Sub cc_Result (Success As Boolean, Dir As String, FileName As String)
If Success Then
Dim j As HttpJob
Dim out As OutputStream
out.InitializeToBytesArray(0)
Dim In As InputStream = File.OpenInput(Dir, FileName)
File.Copy2(In, out)

Dim lastSlash As Int = FileName.LastIndexOf("/")
If lastSlash > -1 Then
FileName = FileName.SubString(lastSlash + 1)
End If
Dim su As StringUtils
Dim j As HttpJob
j.Initialize("file", Me)
j.PostBytes(link & "?type=file&name=" & su.EncodeUrl(FileName, "UTF8"), _
out.ToBytesArray)
End If
End Sub

I obtain the following error with file attach.

Any suggestion to fix this problem?
Thanks a Lot to everyone.
Best regards.

DonManfred · Jan 16, 2019

1. Please use [CODE]code here...[/CODE] tags when posting code.
2. Post errors as TEXT
3. Use okhttputils2 instead of httputils.
4. Usually one need to use PostMultiPart for a Fileupload.

Examplecode

B4X:

Dim j As HttpJob
    j.Initialize("", Me)
    Dim m As Map = CreateMap("additionalfield":"additional data")
   
    Dim filelist As List  ' List holding all files to Upload
    filelist.Initialize
   
    Dim fd As MultipartFileData ' Create a MultipartFileData for each file to upload
    fd.Initialize
    fd.Dir = File.DirAssets
    fd.FileName = "testfiletoupload.txt"
    fd.ContentType = "Text/Plain"
    fd.KeyName = "Testfile"
   
    filelist.Add(fd) ' and add the MultipartFileData to the list
   
    j.PostMultipart("http://domain.com/uploadendpoint.php",m,filelist) ' Upload the files and also giving the additional Values (m Map) to the uploadendpoint
    Wait For (j) JobDone(j As HttpJob)
    If j.Success Then
        Log(j.GetString)
    End If
    j.Release

Calvin Yee · Jan 16, 2019

Hi, I no idea how is it doing the PostMultipart for a FileUpload.

DonManfred · Jan 16, 2019

https://www.b4x.com/android/forum/threads/okhttp-replaces-the-http-library.54723/#content

Are you using okhttputils2 already?

If not remove http and httputils from your project, add okhttp and okhttputils2 to your project and try the code i posted above. It depends on okhttputils2.

Calvin Yee · Jan 16, 2019

I am using okhttputils2.

I want to ask file "uploadendpoint.php" have to save in path "http://domain.com/uploadendpoint.php" then only solve it my request. right?

Android Question Upload files/image from my B4A app to IIS server over the internet

Calvin Yee

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DonManfred

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Calvin Yee

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Android Question Upload files/image from my B4A app to IIS server over the internet

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