Display a PDF from a BLOB Column on a page.

Hi Folks.
I have PDFs stored in BLOB columns in the database.
Is there a way to display these to the APEX user on the page at runtime?
Any pointers appreciated.
Meantime I'm going to experiment.
Cheers
Dogfighter.

I suppose this depends really on what you want.
You have at least two choices.
1) Allow the user to download the pdf and then they get the option to save it or open it in a new window
2) You can also get them to open it. You can open it in a new window by adding "_blank"
in the target.
The sample application has procedures download_my_file and custom_image_display which will show you how to achieve this.
The only other way you could possibly do it is open it as a plugin. Thats way beyond my knowledge, but I'm sure someone else will chip in.

Similar Messages

Report to display a picture from a blob column

hi all
i have a problem :please help
environment: oracle AS 10.1.2.0.2 portal version 10.1.4
i have a slq report:
select field1,field2...,,
decode(cd.photo, empty_blob(),
'<img src="MYCS.show_img?p_field=IMG&p_rowid=NO_CHILD_PIC">',
decode(cd.SOURCE, 'MAIN',
'<img src="MYCS.show_img?p_field=CHILD&p_rowid='||mycs_lib.url_encode(cd.rid)||'" width=160 height=120>',
'<img src="MYCS.show_img?p_field=CHILDARCH&p_rowid='||mycs_lib.url_encode(cd.rid)||'" width=160 height=120>')
) "PHOTO"
from MYCS.mycs_child_details_v cd
where cd.id like :child_id
adn ...
The last field on the (select statement) is a photo(blob type)
NB:MYCS.mycs_child_details_v is a view
trying to create the report i get the following Error:
unable to describe SQL statement. Please correct it (WWV-13010)
Took exception (WWV-13005)
ORA-00942: inconsistent datatypes: expected - BLOB wwv-11230
This report runs without any errors on portal 3.0.9 9i AS
i dont understand what could be wrong here?
is BLOB datatype not supported by/on portal?
is the other way i can display this picture(s)?

Jean,
See this thread:
How can I upload/display image within a record ?
Sergio

Problem displaying PDF stored in BLOB column

Hello everyone.
I've been trying to follow this tutorial http://asktom.oracle.com/pls/asktom/f?p=100:11:0::::p11_question_id:232814159006 on displaying PDFs stored in BLOB columns. This is being performed on Apex 4.2, with my DB running 11g. I've got my procedure, which I'll post below:
create or replace procedure "PDF" (p_id IN gvo_documents.doc_id%type)
is
    l_lob    blob;
    l_amt    number default 30;
    l_off   number default 1;
    l_raw   raw(4096);
begin
    select contents into l_lob
        from gvo_documents
         where doc_id = p_id;
-- make sure to change this for your type!
    owa_util.mime_header( 'application/pdf' );
    begin
        loop
          dbms_lob.read( l_lob, l_amt, l_off, l_raw );
          htp.prn( utl_raw.cast_to_varchar2( l_raw ) );
          l_off := l_off+l_amt;
          l_amt := 4096;
    end loop;
        exception
           when no_data_found then
              NULL;
        end;
end;
I am trying to run this through a PL/SQL dynamic region and while I don't receive any error's, the content displayed is a huge mess of garbled text and odd characters. I've tried to run this procedure on numerous other document types, including word files and jpeg images, all with the necessary changes in my procedure, and regardless of what I use, I still get a large mess of strange characters. Does anyone have any information or ideas about why this is happening?

If I understand correctly, your requirements needs to be broken down into two problems:
1) click link that pops up a window displaying a new APEX page
2) an APEX page the displays the document, not downloads it.
I haven't done #1 (yet).
However, you may be able to generate a URL that points to the new page as part of the SELECT statement for the Report.
This has a related question, but no answer yet:
open pdf in popup browser window
The key is target="_blank" for the anchor tag.
To generate the URL, you should use the APEX_UTIL.prepare_URL() function.
If that doesn't work, a Dynamic Action that does some magical JavaScript stuff may be needed.
For #2, I lost the URL that showed how to display a PDF as part of a "form" page.
From what I remember:
Start with a blank page with one blank HTML region (all the Items go in the HTML region)
Add an Item for the PK/Doc_ID
part I forgot Create a Data Manipulation Process
- Automated Row Fetch
- On Load - After Header
- (stuff for your table/view)
part I forgot Create an (I believe) "File Browser" item type. For Settings:
- Storage Type "BLOB column specified in Item Source" (and place the column name of the BLOB there)
- MIME Type Column: (column name) -- since you have multiple types, this is a MUST HAVE
- Filename Column: (column name) -- I highly recommend you have this.
- Content Disposition == INLINE <-- this is the kicker
Also, you will need a Browser Plugin for each of the MIME Types (otherwise, the browser may try to 'download' the file)
Browsers can handle Image types internally. Adobe's plugin can handle PDFs. I don't know about Word/Excel.
Again, I don't remember the exact details, but that should cover most of it.
MK

Error while opening PDF file downloaded from database Blob column

Hi All,
I am working on jdev 11.1.1.4.0.
In my use-case I am using filedownload Actionlistner on a link to get the PDF file stored in the database in blob field. These files are being uploaded from other use-case in adf only.
After getting the dialog box to open/save/cancel for the PDF file when i click on open then i am getting an error *'Adobe Reader could not open 'abc.pdf' because it is either not a supported file type*
or because the file has been damaged (for example, it was sent as an email attachment and wasn't correctly docoded)' for some files , and to my surprise I am able to open some files.
When I open these PDF files separately from desktop I am able to view the content of each and every file in adobe reader.
I dont know where the problem exactly lies , while uploading/downloading the file . Any ideas/thoughts to resolve this issue?
Thanks
Kanika

Thanks a lot Timo...!!!
I checked the PDF file downloaded directly from the blob column in DB, there only it is corrupted so must be the problem in uploading the file. I am checking the code line by line,, but no problem in setting the file content type,size etc.
Here is the code snippet ..
byte[] buff;
buff = new byte[(int)length]; -- Length is the file size
int bytesRead = is.read(buff);
for (int i = 0; bytesRead < buff.length; i++) {
// int b = is.read();
int b = is.read();
if (b == -1)
break;
buff[i] = (byte)b;
BlobDomain blobDomian = new BlobDomain((buff));
TestVORow = (TestVORow Impl)TestVO.createRow();
if(blobDomian != null) {
TestVORow.setAttachment(blobDomian);
am.getTransaction().commit();
This seems to be Ok to me..the same issue, file is still corrupting.
Any thoughts from your side ???
Thanks
Kanika
The problem is resolved.
Changes made are instead of
InputStream is;
used ... BufferedInputStream bis ;
and after
for (int i = 0; bytesRead < buff.length; i++) {
// int b = bis.read();
int b = bis.read();
if (b == -1)
break;
buff[i] = (byte)b;
bis.close(); // use this close bufferedInput Stream.
Able to open each and every file now..Thanks for your suggestions Timo and Frank.
Edited by: Kanika on Mar 6, 2012 3:15 AM

How to display the content of a BLOB column in a ADF/BC pages ?

How to display the content of a BLOB column in a ADF/BC pages ?
There is some image in database table blog column. And we want to display image on the screeen.
There is some example about upload and dowload blog columns.
(steve not yet document example page etc...)
But We want to display blog picture in a image component...
is there any basic way to do it ?
Thanks a lot...

Ali,
You could just download the sample app... but... here is the servlet code from the demo (look at it just for technique - you'll obviously have to change it for your needs)...
John
package oracle.fodemo.storefront.servlet;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import javax.servlet.*;
import javax.servlet.http.*;
import oracle.jbo.ApplicationModule;
import oracle.jbo.Key;
import oracle.jbo.Row;
import oracle.jbo.ViewObject;
import oracle.jbo.client.Configuration;
import oracle.jbo.domain.BlobDomain;
import oracle.jbo.domain.DBSequence;
import oracle.jbo.domain.Number;
import oracle.jbo.server.ViewObjectImpl;
public class ImageServlet
extends HttpServlet
private static final String CONTENT_TYPE =
    "image/jpg; charset=windows-1252";
public void init(ServletConfig config)
    throws ServletException
    super.init(config);
public void doGet(HttpServletRequest request,
                    HttpServletResponse response)
    throws ServletException, IOException
    response.setContentType(CONTENT_TYPE);
    response.setContentType(CONTENT_TYPE);
    String detailProductId = request.getParameter("detail");
    String thumbnailProductId = request.getParameter("thumbnail");
    boolean thumbnail = true;
    String productId = null;
    OutputStream os = response.getOutputStream();
    String amDef = "oracle.fodemo.storefront.store.service.StoreServiceAM";
    String config = "StoreServiceAMLocal";
    ApplicationModule am =
      Configuration.createRootApplicationModule(amDef, config);
    ViewObjectImpl vo =
      (ViewObjectImpl) am.findViewObject("ProductImages"); // get view object (the same as used in the table)
    if (detailProductId != null)
      productId = detailProductId;
      thumbnail = false;
    else
      productId = thumbnailProductId;
    vo.defineNamedWhereClauseParam("paramThumbnail", null, null);
    vo.defineNamedWhereClauseParam("paramProductId", null, null);
    vo.setWhereClause("DEFAULT_VIEW_FLAG = :paramThumbnail AND PRODUCT_ID = :paramProductId");
    vo.setNamedWhereClauseParam("paramThumbnail", (thumbnail? "Y": "N"));
    vo.setNamedWhereClauseParam("paramProductId", productId);
    vo.executeQuery();
    Row product = vo.first();
    BlobDomain image = (BlobDomain) product.getAttribute("Image");
    InputStream is = image.getInputStream();
    // copy blob to output
    byte[] buffer = new byte[10 * 1024];
    int nread;
    while ((nread = is.read(buffer)) != -1)
      os.write(buffer, 0, nread);
    os.close();
    vo.setWhereClause(null);
    vo.removeNamedWhereClauseParam("paramProductId");
    vo.removeNamedWhereClauseParam("paramThumbnail");
    Configuration.releaseRootApplicationModule(am, false);
}

Opening a pdf from a blob

Hi Guys,
I know this is a borderline ApEx problem but I have a page whose sole job is to open a pdf from a blob stored in the database.
This code works for most client machines:
DECLARE
l_blob blob;
BEGIN
SELECT letter INTO l_blob
FROM letters
WHERE lett_id = :P44_LETT_ID;
-- owa_util.mime_header('application/pdf',false);
-- tried pdf and octet they work the same?????
owa_util.mime_header('application/octet',false);
htp.p('Content-Length: ' || dbms_lob.getlength(l_blob));
owa_util.http_header_close;
wpg_docload.download_file(l_blob);
END;
On some machines I get 'Windows cannot open this file ...File: f[7] ...To open this file..........
On most machines this works fine.
I haven't got it to fail with Firefox yet, just IE but only a few machines running IE. Client getting annoyed and I starting to stress.
Many thanks
Gary

Have you already tried adding
htp.p('Content-Disposition: attachment; filename...as described here?
http://download.oracle.com/docs/cd/B32472_01/doc/appdev.300/b32469/up_dn_files.htm#CIHDDJGF
Maybe it solves the problem, in case IE is a little bit picky. But I really don't know.
Patrick
My APEX Blog: http://inside-apex.blogspot.com
The ApexLib Framework: http://apexlib.sourceforge.net
The APEX Builder Plugin: http://sourceforge.net/projects/apexplugin/

I cannot display image (read from oracle BLOB field) on browser?

I cannot display image (read from oracle BLOB field) on browser?
Following is my code, someone can give me an advise?
content.htm:
<html>
<h1>this is a test .</h1>
<hr>
<img src="showcontent.jsp">
</html>showcontent.jsp:
<%@ page import="com.stsc.util.*" %>
<%@ include file="/html/base.jsp" %>
<%
     STDataSet data = new STDataSet();
//get blob field from database
     String sql = "SELECT NR FROM ZWTAB WHERE BZH='liqf004' AND ZJH='001'";
     //get the result from database
     ResultSet rs = data.getResult(sql,dbBase);
     if (rs!=null && rs.next()) {
          Blob myBlob = rs.getBlob("NR");
          response.setContentType("image/jpeg");//
          byte[] ba = myBlob.getBytes(1, (int)myBlob.length());
          response.getOutputStream().write(ba);
          response.getOutputStream().flush();
     // close your result set, statement
     data.close();
%>

Don't use jsp for that, use servlet. because the jsp engine will send a blank lines to outPutStream corresponding to <%@ ...> tags and other contents included in your /html/base.jsp file before sending the image. The result will not be treated as a valid image by the browser.
To test this, type directly showcontent.jsp on your browser, and view it source.
regards

How do I Display a string from a servlet into a JSP Page???? NEED HELP!!!!

Hi guys,
How do I Display a string from a servlet into a JSP Page...
Ive tried so many bloody things!.....
Simply.
I get text from JSP. The servlet does what ever it does to the string.
Now. Ive create sessions and bean things,.... how the hell do I display it in a text box... I can display on the screen.. but not in the text box.!!!
please help!!!

hmmm, I dont really like using JSP programming, u should be using JAVA..
the way to do it is:
Call and cast to the bean like this:
<%@ page import="beans.*" %>
<% //cast to bean get request create object
userNameBean u= (userNameBean) request.getSession().getAttribute("userNameBean");
then... all you do is call it like this:
<input type="text" name="firstName" value="<%= u != null? u.getFirstName(): "" %>">
this is the real programmers way,,,
chet.~

How to store a PDF in a BLOB column, then select/search it using SQL?

We have a simple requirement.
(1.) We have an Oracle 10g DB.
(2.) We want to store PDFs/MS Word docs inside BLOB column in a table.
(3.) We need to show PDF/MS Word content to the user, without opening the PDFs/MS World like we normally do (i.e. Using PDV reader/ MS Word).
(4.) i.e. We need to use SQL statements and
(a.) Get all contents of the PDF/MS WORD doc.
(b.) Search for specific strings inside these docs in the BLOB columns.How to do this pls? Code sample would be really great.
Edited by: user12240205 on Jul 18, 2012 9:35 PM
Edited by: user12240205 on Jul 18, 2012 9:37 PM

rp0428 wrote:
>
We have a simple requirement.
>
Really? You mean as opposed to a requirement that might actually be doable?Could be that simple is used as in stupid ? Like in, "+look at this simply idiotic requirement, blah.. blah...+"? ;-)
@user12240205:
BLOBs contains binary data. Not text data. How do you propose to search binary data for strings?
PDF and Word formats include actual text strings and identifiers as part of the formatting. How do you propose that this be identified and ignored when searching for specific strings in the document's content?
PL/SQL does not have the ability to take a page from a PDF/Word document, highlight the search string, and display that to the client. A format-parser is needed to parse the PDF/Word format and generate that as content (e.g. HTML or XML) that can be rendered by a client. How do you propose PL/SQL serves up search strings that it found, when it cannot interpret the document format? (cannot even say what page, section or paragraph, that search string occurs)
Documents can be loaded via the DBMS_LOB interface. Either from the db server's file system, or by the client supplying the document as chunks for "write appending" to a BLOB. See Oracle® Database PL/SQL Packages and Types Reference guide for details.
Text search and document indexing are supported by an Oracle feature called Content Management<a> (which includes interMedia, UltraSearch, Oracle Text, etc).
Oracle also supports (on Window server platforms), the Microsoft Component Object Model (COM). COM interfaces (such as COM for Word) can be used for specialised processing (e.g. searching Word documents). Oracle's COM feature allows one to interface directly with external s/w (e.g. MS Word) via its COM interface.

Apache FOP PDF Save in BLOB column

Hi,
I just want to call Apache FOP in an APEX process to create PDF reports and save these reports in a BLOB column in the same database. So I can email these reports in another process using APEX_MAIL. Does anyone know a way to achieve this?
Thanks

If I understand correctly, your requirements needs to be broken down into two problems:
1) click link that pops up a window displaying a new APEX page
2) an APEX page the displays the document, not downloads it.
I haven't done #1 (yet).
However, you may be able to generate a URL that points to the new page as part of the SELECT statement for the Report.
This has a related question, but no answer yet:
open pdf in popup browser window
The key is target="_blank" for the anchor tag.
To generate the URL, you should use the APEX_UTIL.prepare_URL() function.
If that doesn't work, a Dynamic Action that does some magical JavaScript stuff may be needed.
For #2, I lost the URL that showed how to display a PDF as part of a "form" page.
From what I remember:
Start with a blank page with one blank HTML region (all the Items go in the HTML region)
Add an Item for the PK/Doc_ID
part I forgot Create a Data Manipulation Process
- Automated Row Fetch
- On Load - After Header
- (stuff for your table/view)
part I forgot Create an (I believe) "File Browser" item type. For Settings:
- Storage Type "BLOB column specified in Item Source" (and place the column name of the BLOB there)
- MIME Type Column: (column name) -- since you have multiple types, this is a MUST HAVE
- Filename Column: (column name) -- I highly recommend you have this.
- Content Disposition == INLINE <-- this is the kicker
Also, you will need a Browser Plugin for each of the MIME Types (otherwise, the browser may try to 'download' the file)
Browsers can handle Image types internally. Adobe's plugin can handle PDFs. I don't know about Word/Excel.
Again, I don't remember the exact details, but that should cover most of it.
MK

How to store PDF file in BLOB column without using indirect datastore

Hi ,
I want to store a pdf file in a BLOB column.
But , it should be a direct store. I cannot usre indirect datastore.
BLOB column doesn't support indirect datastore. I get the following error.
ERROR at line 1:
ORA-29855: error occurred in the execution of ODCIINDEXCREATE routine
ORA-20000: Oracle Text error:
DRG-10581: indirect datastores cannot be used with long or lob text columns
ORA-06512: at "CTXSYS.DRUE", line 160
ORA-06512: at "CTXSYS.TEXTINDEXMETHODS", line 365
can anyone give me any clue onhow to manage this issue?

Thanks This really helped.
For other readers, I am summarising what I did.
create table test
id number primary key,
docs BLOB
create or replace directory doc_loc
as 'c:\test';
CREATE OR REPLACE PROCEDURE Load_BLOB_From_File (file_name in varchar2)
AS
src_loc bfile:= bfilename('DOC_LOC',Load_BLOB_From_File.file_name);
dest_loc BLOB;
begin
insert into tkctsf15t values(1,empty_blob()) returning docs
into dest_loc;
dbms_lob.open(src_loc,DBMS_LOB.LOB_READONLY);
DBMS_LOB.OPEN(dest_loc, DBMS_LOB.LOB_READWRITE);
DBMS_LOB.LOADFROMFILE(
dest_lob => dest_loc
,src_lob => src_loc
,amount => DBMS_LOB.getLength(src_loc));
DBMS_LOB.CLOSE(dest_loc);
DBMS_LOB.CLOSE(src_loc);
COMMIT;
end;
show errors;
exec Load_BLOB_From_File('test.pdf');
exec ctx_ddl.create_preference('mylex','BASIC_LEXER');
create index testx on test(docs) indextype is ctxsys.context
parameters
('filter ctxsys.AUTO_FILTER LEXER mylex ');
select id from test where contains(docs,'patch')>0;
Thanks Roger once more

Opening Excel Files from DB (blob column)

My project has implemented a WEBUTIL solution to attach files into the database, view the files stored in the database (in a BLOB column), and remove the files stored in the database.
Everything has been running smoothly. We are in final testing and have found a couple of interesting scenarios ...
When a user tries to view an Microsoft Excel 2007 file from our application, the Excel file displays properly (as long as Microsoft Excel isn't already open - outside of our Oracle application). Once the Excel file is viewed, the system will not allow the user back to our application until after the Excel file is closed (we use the start /wait myExcelFile.xls ... command). This works perfectly for us.
The two scenarios we encounter occur when
1.) The user has Microsoft Excel open outside of our application and tries to open an Excel file from within our application, or
2.) The user has the file already open (either from within our application or outside of our application) and then tries to open the file from within our application.
Let me explain a little further because the above two scenarios are interrelated.
When a user has Microsoft Excel open (outside of our application), and then clicks the button to open the Excel file, the system will open the file as another window (within Excel). The system will allow the user to navigate back to our application (where as, if Excel is not open outside of our application, the system will not allow the user to navigate back to our application). Once the user navigates back to our application (while the file is still open), the user can click the button to view the file again. At this point, the user is displayed a WUT-105 error message (I assume b/c the system is trying to open a file that is already open).
I assume the two solutions are the following:
a.) Do not allow a user to open a file that is already open (not sure how to check this from within Forms ?)
b.) Do not allow a user to open an Excel file when another EXCEL process is already running (this will avoid allowing the user to naviagate back to our application)
I don't know if there is a better solution.
Do you experts have any recommendations?
We are using Oracle Application Server 10g R2 (10.1.2.0.2), Oracle Database 10g R2 (10.2), and Oracle Developer 10g (10.1.2.0.2)
I hope this all makes sense.
Thanks,
Mike
Edited by: user639843 on Oct 20, 2008 2:15 PM
Edited by: user639843 on Oct 20, 2008 2:20 PM

Thank you, Thank you, Thank you!!!!
I believe that will work (adding a sequence number to the end of the filename)!
We do not allow a user to update the file, only view. If a user wants to make a change, they need to remove the existing file (from the database), create a new file (outside of our application), and attach the file in our application (into the database). All updates occur outside of our application - we are not a document authoring system, just a document storage system.
Once again, many thanks on the solution!
Mike

How to get the File-Type from a BLOB-Column

Hi all,
I have the database table with the BLOB-Column. In this column are Word/Pdf/Excel/... files can be stored.
Now I want to open these Files from Webforms.
I can download the file from database to the client and then open the file with client_ole2.CREATE_OBJ('Word.Application');
But I can not be sure that the file is a Word-Document.
How can I know which application is saved in the BLOB-column?
Regards

Hi Francois,
thank you.
Unfortunatelly I do not know the interMedia functions. Can you send me an example with interMedia?
I am working with your solution with WEBUTIL_HOST.blocking.
But when I do not give the extension for the file, in that the BLOB will be temporary stored, I get to see the Windows "Select Program..." window. When I select Word or anything else then the file will be opened, but the locking does not working.
Any ideas?
Regards

To upload a PDF file in BLOB column using Oracle Forms 9i

Can anyone tell me how to upload a PDF file from client system using File dialog window and store its content in BLOB column in a table. The file to be uploaded will be in client side.

Take a look at the following :
Re: Storing a PDF in a BLOB
Re: Retrive Image from DB into Image_item
although the threads above are reffered to images and word doc... the procedure/steps are the same....
Greetings...
Sim

How to Upload a PDF file into BLOB column in a table using Forms 9i

Can anyone tell me how to upload a PDF file from client system using File dialog window and store its content in BLOB column in a table. The file to be uploaded will be in client side.

Hi,
please, search a bit on the forum before do a question:
Just searching by "upload blob pdf" ...
How to batch upload PDF files into database BLOB
Regards,
Jose.

Display a PDF from a BLOB Column on a page.

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