reading text file from client machine on NW04

[Former Member]

Hi There,

We need to read a text file from a fixed location to our WD application. need to read this text file content in a String and use it further.

We are on NW04 and so none of WDResource stuff will work for us :-(.

i tried this piece of code:

byte[] file_data_in_bytes = null;

//Get the selected file's contents in a byte array. returns null if no file is selected.

file_data_in_bytes = wdContext.currentContextElement().getCtx_va_FileData();

but file_data_in_bytes is null .. have attached contect variable Ctx_va_FileData to data property of upload UI.

Have i have missed out something.

Thanks for your time.

Rgds

[Saravanan_SD · Accepted solution]

Hi Sudhir,

Value attribute Ctx_va_Filedata must be of type Binary. Map this attribute to the fileupload UI datasource and try accessing it as wdcontext.currentcontextelement.get Ctx_va_Filedata.

Hope it is helpful.

Regards,

Saravanan

[Former Member · Accepted solution]

I am using

ByteArrayInputStream byteArrayInputStream =

new ByteArrayInputStream(file);

Reader reader = new InputStreamReader(byteArrayInputStream);

line_of_file = bufferedReader.readLine();

[Saravanan_SD · Accepted solution]

Hi Sudhir,

You should pass the bytes[] into the ByteArrayInputStream. Could you explain what exactly you are trying to implement?

For uploading file from the fixed path, it would be necessary to use file = new file(path). This path would be not from the local PC but from the Server where it is deployed. Evne I have tried doing the same. I would also like to wait for others ideas on this.

Regards,

Saravanan.

[Former Member · Accepted solution]

Hi,

Try out the following function

private void  setByteArrayFromResourcePath(String resourcePath)
  throws FileNotFoundException, IOException {
  FileInputStream in = new FileInputStream(new File(resourcePath));
  byte[] part = new byte[10 * 1024];
  ByteArrayInputStream out = new ByteArrayInputStream(part);
  int length;
  while ((length = in.read(part)) != -1) {
  out.read(part, 0, length);
  }
  in.close();
  }

Regards

Ayyapparaj

[Former Member · Accepted solution]

Hi Saravanan,

I am trying to read a text file and need to pass its content to RFC.

Now this text file is generated by a script and is created with particular name and location.. i wanted to read this file and pass content to RFC.

You are right, as so far i could find a solution to autopick from client machine.

Rgds

[Former Member · Accepted solution]

Hi Ayyapparaj,

which variable will hold value of content in the file... and what will be format for file path here..(hope this will pick client's machine location not server one).

Rgds

[Former Member · Accepted solution]

Hi Guys..

Anyone has any idea on this.. what could be missing here.

Rgds

[Former Member]

Hi,

Data type should be of type Binary.

Pl go through this tutorial for NW04

https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/202a850a-58e0-2910-eeb3-bfc3e081...

Regards,

Ayyapparaj

[Former Member]

Thanks a lot for your reply... I am using Binary data type only for reading it.

when i debugged the application. i saw condition

while ((line_of_file = bufferedReader.readLine()) == null)

is failing and thats why none of the value is being passed... is there something missing in this syntax..

Also if is possible to read a file from particular location, i.e. instead of use selecting a file though Upload UI, can we default the file location and upload it same way?

Regards,

Sudhir

[Former Member]

Hi Sudhir,

Replace,

while ((line_of_file = bufferedReader.readLine()) == null)

with

while ((line_of_file = bufferedReader.readLine()) != null)

i.e if line_of_file contains Data, continue.

Hope it Helps.

Regards,

Alka.