How to Download a file from remote system.

Hi,
If anybody knows how to download a file directly from database to localdirectory

I have data in a blob column of one table.
from a html page if i click download link then a download dialog box shoud come saying save and cancle etc ., the blobdata from database should be retrived and stored in desired loaction in client system.

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Hi,
For file down load u have to use a UI element as "File download".
u just create context attribute as setdownload_res and file data.
setdownload_res as of type "com.sap.ide.webdynpro.uielementdefinitions.Resource" then bound it to the ui element "resource".
file data as of type "com.sap.tc.webdynpro.progmodel.api.IWDInputStream"
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wdComponentAPI.getMessageManager().reportSuccess(""+c);
after this in the getter method u write this code
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Ricky

Hi,
   Try this code,
==============================================
TYPES : BEGIN OF ty_emp,
          empno(2) TYPE c,
          empid(10) TYPE c,
          empname(3) TYPE c,
        END OF ty_emp.
DATA : it_emp TYPE TABLE OF ty_emp,
        wa_emp TYPE ty_emp.
DATA : pbk TYPE string.
SELECTION-SCREEN BEGIN OF BLOCK b1 WITH FRAME TITLE text-001.
PARAMETERS : p_file TYPE rlgrap-filename.
PARAMETERS : p_asfile TYPE rlgrap-filename.
SELECTION-SCREEN END OF BLOCK b1.
pbk = p_file.
OPEN DATASET p_asfile FOR INPUT IN TEXT MODE ENCODING DEFAULT.
DO.
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Filling the already created file with download PS radiobutton
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    EXPORTING
BIN_FILESIZE                  =
      filename                      = pbk
FILETYPE                      = 'ASC'
     append                        = 'X'
     write_field_separator         = ' '
HEADER                        = '00'
TRUNC_TRAILING_BLANKS         = ' '
WRITE_LF                      = 'X'
COL_SELECT                    = ' '
COL_SELECT_MASK               = ' '
DAT_MODE                      = ' '
IMPORTING
FILELENGTH                    =
    TABLES
      data_tab                      = it_emp
EXCEPTIONS
FILE_WRITE_ERROR              = 1
NO_BATCH                      = 2
GUI_REFUSE_FILETRANSFER       = 3
INVALID_TYPE                  = 4
NO_AUTHORITY                  = 5
UNKNOWN_ERROR                 = 6
HEADER_NOT_ALLOWED            = 7
SEPARATOR_NOT_ALLOWED         = 8
FILESIZE_NOT_ALLOWED          = 9
HEADER_TOO_LONG               = 10
DP_ERROR_CREATE               = 11
DP_ERROR_SEND                 = 12
DP_ERROR_WRITE                = 13
UNKNOWN_DP_ERROR              = 14
ACCESS_DENIED                 = 15
DP_OUT_OF_MEMORY              = 16
DISK_FULL                     = 17
DP_TIMEOUT                    = 18
FILE_NOT_FOUND                = 19
DATAPROVIDER_EXCEPTION        = 20
CONTROL_FLUSH_ERROR           = 21
OTHERS                        = 22
IF sy-subrc <> 0.
MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
        WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
ENDIF.
==============================================
Regards,
Krrishna

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mani_miit wrote:
I have a problem in file uploading and downloading.OK.
The problem is i upload my .doc file in ms sql server successfully completed. Sorry, I don't see a problem here? You said that it is successfully completed. Please elaborate the problem.
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How to Download a file from web server using servlets

how do we download a file from Java Web Server connecting to oracle database
it should start as soon a i click a button in my html browser
please reply as it is needed to complete my project to submited to the collage

With SQLJ you can do it.
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or
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How to download a file from Application Sever to Client Workstation?

Hi All,
I know how to move a file from client workstation to Application server.
How to download that uploaded file from Application file (AL11) directory to local desktop?
Regards,
Arun.M.D

Hi Arun,
Goto AL11 - > click on the directory path and select your file -open the file - > click on menu item List - >save/send -> file
-> select the type of file.
Or you can write a small abap code using DATASETS. If you require I will post the code.
Hope it helps you.
Regards,
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How to download a file from server machine to client machine using jsp

Hi,
In my application, I have an excel file stored on my server machine. How can I download that excel file on to my client machine using jsp. Is there any other way I can open that file from my machine and save it in my machine using jsp/java?
Its an emergency for me to do this.
Can anyone provide me the full code to download a file from server machine as I don't have
time to browse through various sites.
thanks in advance,
Tiijnar

Please post your code using code tags (click on CODE above the text area, when posting)
response.setContentType("application/octet-stream");Why octet-stream? Set the correct mime-type.
String disHeader = "Attachment; Filename=\"filename\"";The filename should just be the file's name. Not the complete path to the file! This will tell anyone where the file is located on the server. It's also inconvenient because by default,the browser will suggest it as the name for the download.
Your way of writing to the output stream is just plain wrong. See this snippet (picked from [http://balusc.blogspot.com/2007/07/fileservlet.html])
        BufferedInputStream input = null;
        BufferedOutputStream output = null;
        try {
            // Open streams.
            input = new BufferedInputStream(new FileInputStream(file), DEFAULT_BUFFER_SIZE);
            output = new BufferedOutputStream(response.getOutputStream(), DEFAULT_BUFFER_SIZE);
            // Write file contents to response.
            byte[] buffer = new byte[DEFAULT_BUFFER_SIZE];
            int length;
            while ((length = input.read(buffer)) > 0) {
                output.write(buffer, 0, length);
            // Finalize task.
            output.flush();
        } finally {
            // Gently close streams.
            close(output);
            close(input);
        }

How to download a file from server?

Hi everyone,
I need to download a file from my server to client machine. I got a sample code from ur forum and I modified it slightly.
//Snippet of code:
public void doGet(HttpServletRequest req, HttpServletResponse res)throws
     ServletException, IOException{
int bytesRead=0;
     int count=0;
     byte[] b1=new byte[1];
     //OutputStream out=res.getOutputStream();
     res.setContentType("application/html");
     //Create an input stream from file URL.
     String fileURL="http://localhost:8080/webapps/upload/upload.html";
     BufferedInputStream bis=null;
     BufferedOutputStream bos=null;
     boolean download=false;
     res.setHeader("Content-disposition", "attachment; filename=upload.html " );
     try{
     URL url=new URL(fileURL);
     URLConnection connection=url.openConnection();
     InputStream in=connection.getInputStream();
     bis=new BufferedInputStream(in);
     FileOutputStream fileout=new FileOutputStream("upload.html");
     bos=new BufferedOutputStream(fileout);
     while(-1 != (bytesRead = bis.read())){
     try{
     bos.write(bytesRead);
     bos.flush();
     }//end of try forwhile loop
     catch(SocketException e){
     setError(e);
     break;
The code is getting compiled, when I run the appln using the URL,
http://localhost:8080/upload/servlet/DownloadFile
it opens a pop up dialog box, asking whether to "open", "save" or "cancel" buttons. When I try to open a file, I'm getting a blank page.
I'm not getting the contents of the file.
So pls can anyone tel me wht's wrong in the code or do i need to add few more lines in my code?
Also pls let me know, how can I download any files of type .doc, html, .txt, .zip, or any type, without mentioning the file type?
Thanks in advance

Do not use a FileOutputStream (that will save it locally to the server). Call HttpServletResponse.getOutputStream(), which will send it back to the browser. Also remember to call close() on the stream at the end.
- Saish

How to Download a file from remote system.

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