dwonload file blob

ADF 11 g R2, ADF BC
Hello
I have a file uploaded to the DB as a column of type blob.
Now, I'm trying to download it.
I followed the smuen' example of "not yet documented" sample #85: code like:

package olfms.view.backing;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
Import javax.faces.context.ExternalContext;
Import javax.faces.context.FacesContext;
Import javax.faces.event.ActionEvent;

to import javax.servlet.http.HttpServletResponse;

Import olfms.view.util.EL;
Import oracle.adf.view.rich.component.rich.data.RichTable;
Import oracle.binding.OperationBinding;
Import oracle.jbo.Row;
Import oracle.jbo.domain.BlobDomain;
Import oracle.jbo.uicli.binding.JUCtrlHierNodeBinding;
Import olfms.view.util.MimeTypes;

public class downloadBean {}

private richeTableau t2;
public downloadBean() {}
}
public void setT2 (richeTableau t2) {}
This.T2 = t2;
}

public richeTableau getT2() {}
Return to t2;
}
public void onDownload (FacesContext facesContext,
OutputStream outputStream) throws IOException {}
F = JUCtrlHierNodeBinding
(JUCtrlHierNodeBinding) this.t2.getSelectedRowData ();
Line = f.getRow ();
File BlobDomain = (BlobDomain) row.getAttribute ("StoredFile");
String fileName = row.getAttribute("FileName").toString ();
ExternalContext extContext = facesContext.getExternalContext ();
Length = file.getLength ();
String fileType = MimeTypes.getMimeType (fileName);

HttpServletResponse response = extContext.getResponse () (HttpServletResponse);
response.setHeader ("Content-Disposition", "attachment; filename =------"" + fileName + "\" ");"
response.setContentLength ((int) length.intValue ());
response.setContentType (file type);

InputStream in = file.getBinaryStream ();
OutputStream out = response.getOutputStream ();

Byte [] buf = new byte [1024];
int count;
While ((count = in.read (buf)) > = 0) {}
out. Write (buf, 0, count);
}
in. Close();
out. Flush();
out. Close();
facesContext.responseComplete ();
OperationBinding = refresh
(OperationBinding) EL.get ("#{bindings.") Execute1}");

}
}

Whats happening is the first time I click on the name of the file, the file is downloaded from the database correctly. But if I click on the same file again, only the empty file that I get. What happened to this problem. Thank you!!!

have resolved to add the line. "file.closeInputStream ();"

Published by: xsyang on August 2, 2011 02:16

After closing the input stream, call

...
in.close();
out.flush();
out.close();
file .closeInputStream();
...

to clean the BlobDomain.

Timo

Tags: Java

Similar Questions

ENCRYPTION and DECRYPTION of a FILE BLOB
Hello

How to encrypt and decrypt a file blob. Can U please give me an example to encrypt a file BLOB?

Thank you
Use the DBMS_CRYPTO package...

http://download.Oracle.com/docs/CD/B19306_01/AppDev.102/b14258/d_crypto.htm#ARPLS664

Save a file BLOB field
Hello

How to record a file BLOB Oracle database method row.setAttribute (fieldBlob ".")?

ADF JDeveloper.
A quick search translates into http://kuba.zilp.pl/?id=1

Timo

How to write the xml content of a file (Blob data Type) with other columns in file system

Team,
We are currently working on oracle 11 g. Suppose that we consider the SCOTT. EMP table for our creation of the table.
All existing columns of SCOTT along. EMP table allows to assume that this table has an additional column name emp_xml, which is of TYpe of BLOB data and it holds xml data.
the size of the data blob for each record in this col is greater than 32 KB (normally about 1 GB), now I want to write the contents of this column along
with enmae, empno, hiredate into an external file. Assume that if we are only to the BLOB column that is emp_xml then the code below works

Start

for c in (select emp_xml from your_table)

loop

dbms_xslprocessor.clob2file (emp_xml.getclobval (), 'YOUR_LOCATION', 'YOUR_DYNAMIC_FILENAME')
end loop;
end;

but I want empno, enmae, hiredate with blob emp_xml written in the external file. Any assistance in this case welcome.

Concerning

max_linesize

Maximum number of characters for each line, including the newline character,
for this file (minimum 1, maximum value 32767). If not specified, Oracle
provides a default value of 1024.

Defines how much you can read or write to a single call. I have to loop through the clob object and I write a pieces of 1024. So there is no limit to how much she can write. Just test it, IT will WORK!

Cannot download a file blob

Hi all
I created an application that requires downloading and uploading the files.
I created a column in my table "files" as the BLOB type.
I am able to download the file in the DB, and it is saved.
Now, I've created an interactive report to download the file
I followed the following site
http://AWADs.NET/WP/2012/03/12/how-to-download-BLOB-content-as-a-file-using-Oracle-application-express/
But it is throwing following error:
ORA-06502: PL/SQL: digital or value error: character of number conversion error

One thing I observed is that although my column is a blob, in the attributes of the report it shows the Type of column as 'other '.

Kindly help me to solve this problem.

Please use the dbms_lob.getlength () function on your blob data type column. So for your blob column, edit the 'Blob column attributes' under the 'report of the attributes-> column formatting.
```
SELECT file_id,
  file_name,
  mime_type,
  dbms_lob.getlength(blob_content) download
FROM my_files
```
Thank you!

JMcG

A rESTful Service: display file BLOB in DB as a RESTful service?
Hello

With Oracle Cloud we can expose the data as RESTful Web Service, but how about exposing BLOB... we need to generate a link to this file that is stored in the DB.

To make it clearer:

Two Tables:
```
Properties (Property_ID number PK, Project varchar2(40), Property_number varchar2(20) ...)
```
```
Images  (ID number PK, Property_ID number FK, content blob, 
mimetype varchar2(200), filename varchar2 (200), filesize varchar2 (200))
```
And I want to expose this request as repairman:
```
Select p.property_id, p.project, p.property_number, i.content 
from properties p inner join images i on (p.property_id = i.property_id)
```
Usually we use: [url http://docs.oracle.com/cd/E14373_01/apirefs.32/e13369/apex_util.htm#CHDICGDA] apex_util.get_blob_file_src, but that one must be called from a session valid apex! ("i.content" in this query should give a link).

How can do us?

One other point, because we expose the data in JSON format:
Suppose I have a property with 10 images, so it is meaningless to get 10 rows for the same property just to give a different image. I think we need another (nested) level for images!

I hope my point is clear,

Thanks in advance...
Fateh
Hi Fateh-

Good question. You identify the source as a multimedia resource type and use a SQL statement with the primary key and the BLOB column. When you use multimedia resource, you are basically saying your Cloud Service database not to marshall the data, simply send it - which is exactly what you are looking for.

Thanks to this application you will need a separate SQL call for each retrieval of BLOB. However, you may be able to use a PL/SQL block as the endpoint for the RESTful Service and take care of several BLOB in the processing block.

I hope this helps.

-Rick Greenwald

.csv file BLOB conversion
Hi all

I have two files (a .txt and a .csv). I have to send these two files through PL/SQL after their conversion to BLOB.

How to convert .txt and .csv in BLOB files?

Please help me in this regard.
Thank you!

--
REDA
889224 wrote:

The requirement came as BLOB supports up to 4 GB if I'm not mistaken. So for this I have to convert it to BLOB.

BLOB or CLOB are LOB data types. Oracle supports up to 128 PB type LOB data.

Anyway is to be converted to BLOB?

Convert what exactly? What is the source?

If the source is an external file on the Oracle server, and then DBMS_LOB. LoadFromFile() can be used.

If the source is an external file on the platform of the Oracle customer, then the customer must read the source file and use for example DBMS_LOB. WriteAppend() to add the source file for the LOB.

If the client is a web browser, download of standard files can be used and the downloaded file will be in your table of documents mod_plsql .

If the source is a web service, for example providing the file, UTL_HTTP can be used to read the output of the web service and the Chuck in a LOB.

Etc.

So it must be very clear on what exactly is the problem.

HOW to use the file/BLOB data temporary - email for multiple users... Please see code
Dear gurus
the code below works fine, he sends a good fixation to the first user, but to the 2nd user, it send blank (empty) file.
What I want, I have read the data from the source and enter the temporary BLOB and use the same data to send several users in the loop.

create or replace
PROCEDURE dba_ho.emailattacheulhr is
/ * LOB related operation varriables * /.
v_src_loc BFILE.
l_buffer RAW (54);
l_amount directory: = 54;
l_pos INTEGER: = 1;
l_blob BLOB: = EMPTY_BLOB;
l_blob_len INTEGER.
v_amount INTEGER.
/ * Related UTL_SMTP varriavles. */
v_connection_handle UTL_SMTP. CONNECTION;
v_from_email_address VARCHAR2 (200);
v_to_email_address VARCHAR2 (200);
v_cc VARCHAR2 (200);
v_smtp_host VARCHAR2 (50);
v_subject VARCHAR2 (500);
l_message VARCHAR2 (30000);
l_filename VARCHAR2 (4000);
CustNo number (8);
CNAME varchar2 (50);

cst slider is
Select a.EMAIL_ADDR, a.CARDHOLDER_NAME
Cust a
ORDER BY a.cust_no;

/ * This procedure of send_header is mentioned in the documentation * /.
PROCEDURE send_header (pi_name IN VARCHAR2, pi_header IN VARCHAR2) AS
BEGIN
UTL_SMTP. WRITE_DATA (v_connection_handle,
pi_name | ': ' || pi_header | UTL_TCP. CRLF);
END;

BEGIN
v_src_loc: = BFILENAME ('DIR_MMAIL', 'MAKPROM.pdf');
v_from_email_address: = '[email protected] ';
v_cc: = '[email protected] ';
v_smtp_host: = 'mailhost.mak.com ';
v_subject: = 'list of Promotion of Mak;
-l_blob BLOB: = EMPTY_BLOB;
/ * Prepare the LOB of attachment file. */
DBMS_LOB. OPEN (v_src_loc, DBMS_LOB. LOB_READONLY); -Read the file
DBMS_LOB. CREATETEMPORARY (l_blob, TRUE); -Create a temporary LOB to store the file.
v_amount: = DBMS_LOB. GETLENGTH (v_src_loc); -Amount to be stored.
DBMS_LOB. LOADFROMFILE (l_blob, v_src_loc, v_amount); -A temporary file in LOB loading
l_blob_len: = DBMS_LOB.getlength (l_blob);

Begin
CSE opened;

loop
extract the CSE in custno, v_to_email_address, cname;
When the output cst % notfound;

l_message: = 'Dear customer ' | UTL_TCP. CRLF;
l_message: = l_message | CNAME | UTL_TCP. CRLF;
l_message: = l_message | UTL_TCP. CRLF;
l_message: = l_message | "Thanks for choosing. Enclosed please find our current list of promotion for your review. '||
UTL_TCP. CRLF;
l_message: = l_message | UTL_TCP. CRLF;
l_message: = l_message | "Sincere friendships. UTL_TCP. CRLF;
l_message: = l_message | UTL_TCP. CRLF;
l_message: = l_message | UTL_TCP. CRLF;
l_message: = l_message | "To Mak' | UTL_TCP. CRLF;
l_message: = l_message | ' www.mak.com' | UTL_TCP. CRLF;

/ * Associated with coding UTL_SMTP. */
v_connection_handle: = UTL_SMTP. OPEN_CONNECTION (v_smtp_host, 25);
UTL_SMTP. HELO (v_connection_handle, v_smtp_host);
UTL_SMTP. MAIL (v_connection_handle, v_from_email_address);
UTL_SMTP. RCPT (v_connection_handle, v_to_email_address);
UTL_SMTP. RCPT (v_connection_handle, v_cc);

UTL_SMTP. OPEN_DATA (v_connection_handle);
send_header ("", v_from_email_address) ;--|| ("<>'");
send_header ("TO", v_to_email_address) ;--|| ("<>'");
send_header ('CC', v_cc);
send_header ('Subject', v_subject);

-MIME header.
UTL_SMTP. WRITE_DATA (v_connection_handle,
"MIME-Version: 1.0 ' |" UTL_TCP. CRLF);
UTL_SMTP. WRITE_DATA (v_connection_handle,
' Content-Type: multipart/mixed; ' || UTL_TCP. CRLF);
UTL_SMTP. WRITE_DATA (v_connection_handle,
"boundary =" ' | "'" Sample.SECBOUND' | '"' ||
UTL_TCP. CRLF);
UTL_SMTP. WRITE_DATA (v_connection_handle, UTL_TCP. CRLF);

-Body of the message
UTL_SMTP. WRITE_DATA (v_connection_handle,
'--' || "Sample.SECBOUND" | UTL_TCP. CRLF);
UTL_SMTP. WRITE_DATA (v_connection_handle,
' Content-Type: text/plain; "|| UTL_TCP. CRLF);
UTL_SMTP. WRITE_DATA (v_connection_handle,
'charset = US-ASCII' | UTL_TCP. CRLF);
UTL_SMTP. WRITE_DATA (v_connection_handle, UTL_TCP. CRLF);
UTL_SMTP. WRITE_DATA (v_connection_handle, l_message |) UTL_TCP. CRLF);
UTL_SMTP. WRITE_DATA (v_connection_handle, UTL_TCP. CRLF);

-Attachment of e-mail
UTL_SMTP. WRITE_DATA (v_connection_handle,
'--' || "Sample.SECBOUND" | UTL_TCP. CRLF);
UTL_SMTP. WRITE_DATA (v_connection_handle,
' Content-Type: application/octet-stream' |
UTL_TCP. CRLF);
UTL_SMTP. WRITE_DATA (v_connection_handle,
' Content-Disposition: attachment; ' || UTL_TCP. CRLF);
UTL_SMTP. WRITE_DATA (v_connection_handle,
"filename =" ' | "MakMail.pdf" | '"' || UTL_TCP. CRLF);
UTL_SMTP. WRITE_DATA (v_connection_handle,
' Content-Transfer-Encoding: base64' | UTL_TCP. CRLF);
UTL_SMTP. WRITE_DATA (v_connection_handle, UTL_TCP. CRLF);
/ * Write the BLOB into pieces * /.
While l_pos < l_blob_len LOOP
DBMS_LOB. READ (l_blob, l_amount, l_pos, l_buffer);
UTL_SMTP.write_raw_data (v_connection_handle,
UTL_ENCODE. Base64_encode (l_buffer));
UTL_SMTP. WRITE_DATA (v_connection_handle, UTL_TCP. CRLF);
l_buffer: = NULL;
l_pos: = l_pos + l_amount;
END LOOP;
UTL_SMTP. WRITE_DATA (v_connection_handle, UTL_TCP. CRLF);

-E-mail nearby
UTL_SMTP. WRITE_DATA (v_connection_handle,
'--' || "Sample.SECBOUND" | '--' || UTL_TCP. CRLF);
UTL_SMTP. WRITE_DATA (v_connection_handle,
UTL_TCP. CRLF. '.' || UTL_TCP. CRLF);
UTL_SMTP. CLOSE_DATA (v_connection_handle);
UTL_SMTP. Quit (v_connection_handle);
-DBMS_LOB. FREETEMPORARY (l_blob);
-DBMS_LOB. FileClose (v_src_loc);

End loop;

EXCEPTION
WHILE OTHERS THEN
UTL_SMTP. Quit (v_connection_handle);
DBMS_LOB. FREETEMPORARY (l_blob);
DBMS_LOB. FILECLOSE (V_SRC_LOC);
dbms_output.put_line (SQLERRM); -try to print the error message.
END;
DBMS_LOB. FREETEMPORARY (l_blob);
DBMS_LOB. FileClose (v_src_loc);
End;

-end of code

Help, please.

Concerning

S.Garewal
This is what happens when you copy a code without understanding.
Take a look at the code here
```
/* Writing the BLOB in chunks */
WHILE l_pos < l_blob_len LOOP
DBMS_LOB.READ(l_blob, l_amount, l_pos, l_buffer);
UTL_SMTP.write_raw_data(v_connection_handle,
UTL_ENCODE.BASE64_ENCODE(l_buffer));
UTL_SMTP.WRITE_DATA(v_connection_handle, UTL_TCP.CRLF);
l_buffer := NULL;
l_pos := l_pos + l_amount;
END LOOP;
```
Discover the parameters of DBMS_LOB. READ.
For the first time it's good reading but your position and the quantity is not initialized when you loop and read again and is not read correctly.

Browse insert file as BLOB in DB

Hello
I am selecting a file with File Explorer and try to insert into the database. Here's my simple insertion process.
```
BEGIN

insert into OFATTACH values(1, '12345', 'txt', :P100_A3, sysdate, 'E-548', utl_raw.cast_to_raw(:P100_A3));

END;
```
The file browser is P100_A3. My problem is that when I load utl_raw.cast_to_raw(:P100_A3), insert the name of the file into the BLOB column. How to reference the content of the file in P100_A3 and insert it into the blob column? Also is there a method to get the mime type, or I would be better of the analysand? Thanks for any help.

Baonerges wrote:

I am selecting a file with File Explorer and try to insert into the database. Here's my simple insertion process.
1. BEGIN
2. insert into OFATTACH values (1, '12345', 'txt',: P100_A3, sysdate, 'E-548', utl_raw.cast_to_raw(:P100_A3));))
3. END;
The file browser is P100_A3. My problem is that when I load utl_raw.cast_to_raw(:P100_A3), insert the name of the file into the BLOB column. How to reference the content of the file in P100_A3 and insert it into the blob column? Also is there a method to get the mime type, or I would be better of the analysand? Thanks for any help.

utl_raw.cast_to_rawplays no role in the upload of a file BLOB APEX. Use declarative BLOB support for transferring files directly in your table. See on BLOB support in the forms and reports in the documentation. There is a tutorial OBE which followed the introduction of the declarative BLOB support in 3.1 that is still relevant to 4.x and examples are available in various packaged applications, specifically the Sample File Upload and Download app.

BLOB file down load
Hi all
I'm using 4.1 APEX and created a file browser, download data blob to table and insert in the table correctly...
but
I am facing problem in what file blob download and do not receive the correct format as de.csv/.xls/.text/.jpg files...

in my report I query like this
----------------------------------------------------------------
Select "ROWID",.
DBMS_LOB. GetLength ("FILENAME_1") "PICTURE_1."
"FILENAME_1,"
'MIMETYPE_1 '.
of ' #OWNER # '. " T_BLOB ".
-----------------------------------------------------------
I have to do some settings or need to change something, Please help me.
Hello
If you speak Arabic, please watch this video about Blob in Apex:
http://www.YouTube.com/watch?v=MBFFsik6CGw

Or you do not need to know Arabic. Just watch the video and see how it works...
Kind regards
Fateh

Published by: Fateh 11 Sep, 2012 23:17

Problem with the BLOB data as type. JPEG file

If im my current procedure, I am creating an XML file with an assortment of blob as .jpeg file. The issue I'm having is that the .jpeg created files seem to somewhat corrupt, which means that some images are missing part of their pixels/bytes(not sure what the correct term here is). So basically, the images are output with some parts of them are cut.
-------------------------------------------------------------------------

* Note:
The file BLOB look good when you view them in my table
Length in bytes of BLOB is all WAY less 32000 (each is about 8 k)
-------------------------------------------------------------------------

Here's some of my code that can help to give a better idea of how things work...
Oracle: 10.2 g

Here's my loop for

  For ii in 1..player_results.count loop
                              
                               --Outputs Bloop File

                               xBlobFileType := utl_file.fopen (xFilePath, player_results(ii).hmi_player_filename , 'W', 25000 );
                               dbms_lob.read         (player_results(ii).heat_map_image, xAmt, xPos, xBuffer);
                               utl_file.put_raw       (xBlobFileType, xBuffer);
                               utl_file.fclose          (xBlobFileType);
                              
                             --Prints data for XML file 
                              utl_file.put_line (xFile, lpad('  ' ,xParentIndent, ' ') || '<player>');
                              etc...

This is the query that fills the BLOB file and the XML data

    
        select  gs.distance_run,
                  gs.avg_speed,
                  gs.possession,
                  gs.heat_map_image, --BLOB File
                  gs.team_id,
                  s.home_team_id,
                  s.home_team_id_1032,
                  s.away_team_id,
                  s.away_team_id_1032,
                  s.game_code,
                  s.game_code_1032,
                  (case
                              when gs.team_id = s.home_team_id then
                              IMAGE_NAME_HOME$' || s.game_code_1032 
                                                                || s.home_team_id_1032 
                                                                || xBlobNameExt
                              else
                              'IMAGE_NAME_AWAY$' || s.game_code_1032 
                                                                || s.away_team_id_1032 
                                                                || xBlobNameExt
                              end
                              ) hmi_team_filename
          bulk collect into team_results
          from   
                  soccer.soccer_optical_team_gm_stats gs,
                  customer_data.cd_soccer_schedule s
          where   gs.game_code = xGID
          and     gs.game_code = s.game_code 
          order by decode(gs.team_id - s.home_team_id, 0, 0, 1) desc;

Published by: user652714 on April 10, 2009 10:56

Explanation in comments

delcare
   xAmt binary_integer := 25000
begin
   loop
      dbms_lob.read(...,xAmt,...);
      -- at this point xAmt is the number of bytes or characters read, not necessarily 25000
      ....
      xAmt := 25000;  -- <--- try adding this at the end of your loop (or the appropriate location)
   end loop;
end;

Could you post the whole code of procedure block?

How to read 200 bytes of a file albums

I have to read bytes n top of page of a set of very large files in the system in my WebWorks app, but I do not know how to implement it. Please help me.

Thank you

Hi huydq5000,

Using the FileReader, you can use the function called readAsBinaryString (blob)

Suppose you had a file named file object and a FileReader object named reader.

You can use file.slice (startByte, endByte) to get a piece of your object file Blob, in your case it would be something like:

reader.readAsBinaryString (file.slice (0, n));

Take a look at the section 'Cut a file' in this link:
http://www.html5rocks.com/en/tutorials/file/dndfiles/

OS 10.2 Blob generator problems

It seems that OS 10.2 broke several pieces of my WebWorks app.

Are there changes to the operation of generator of blob in newer versions?

This line 10.1:

var = new Blob BLOB ([data], {"type: application/pdf" ""});

creates successfully one file Blob based on the data contained in the variable "data".

But on 10.2, the Blob is incorrect.

Here are the outputs web Inspector of the Blobs in 10.1 and 10.2

properly trained 10.1

10.2 malformed

Really need help to fix this problem.

What version test it this on?

Is it possible that you could have crushed the BLOB somehow?

It could be temporarily broken - but you see how in your output 10.2 there is no constructor, and the prototype is different? In the version I tried, these values are correct and corresponding with 10.1. I'm on a whole new generation of 10.2, so it looks good for your application while working on the next version.

Download BLOB in a new window

I have an Apex 5 interactive report on a table with a blob column. I have the updated column to download BLOB and Inline content available. It works fine, but I would like that the file blob to open in a new browser window. I see no way to do it. Is there a way?
Thank you!

RoboMan says:

I have an Apex 5 interactive report on a table with a blob column. I have the updated column to download BLOB and Inline content available. It works fine, but I would like that the file blob to open in a new browser window. I see no way to do it. Is there a way?

1. in the definition of BLOB column, adds a static ID as the "blob-download" for use as a jQuery selector.

2. create a dynamic action after Refresh on the IR region, which inserts an attribute target on the download link:

Event: After refresh

Selection type: Region

Region:

Real Actions

Action: Run the JavaScript Code

Fire on Page load: Yes

Code
```
$('td[headers="blob-download"] a').attr('target', '_new')
```

Download the Blob in ADF

Hello
I want to downlod file Blob of the Oracle database in the adf, can someone help me with this task.
Thanx.

See online, download and store the data into a blob

JDev11.1.2.1.0: Manipulation of images/files ADF (part 2) | JDev & amp; Goodies from the ADF

dwonload file blob

Similar Questions

Maybe you are looking for