image « Blob « Java Database Q&A

1. blob detection in binary image and extracting

i am working on a project (java media framework and JAI) i have a binary image which contains some objects (blobs) , what i want to do is how to detecting ...

2. How to expose Blob (Image) data via REST webservice

I'm storing images in blob form in a MySql database table. I need to expose these images via a REST webservices and was wondering what my options are. The ...

3. How can I turn an ImageIcon back into a blob?

I've stored a Blob (PNG file) into the database like so:

File file = new File( "image.png" );
FileInputStream fis = new FileInputStream( file );
statement.setBinaryStream( 1, fis, (int) file.length() );
Currently I use this ...

4. How to write an image on disk from blob?

I am tring to create an image file from database on disk. I wrote the following code:

    oracle.sql.BLOB blob1 = (BLOB) rs.getBlob(1);

    //fillFilePath is file ...

5. how to use large objects,images blob

There are a couple of ways to do this. If the file resides on the database server itself -- perhaps the easiest method is to just use DBMS_LOB.LOADFROMFILE and let the server do all of the work: create table demo ( id int primary key, theBlob blob ) / create or replace directory my_files as '/export/home/tkyte/public_html'; create or replace procedure load_a_file( ...

6. Image Read from Blob

Hi We have images stored in a Blob in Oracle Database. I was able to retrieve the bytes of the images from the blob. However in the response output I get a screen of binary characters. I tried r response.setContentType("image/gif"); as well. In this scenario it shows me a image place holder on the screen. No image is displayed here as ...

7. Problem showing BLOB images in Multi-threaded model

In the following code, I'm retriving BLOB image from OracleXE database and sending the image to the browser. The table is OracleXE's COUNTRIES table (HR Schema) with BLOB gif images added. The browser displays all those images (flags) in a table. My problem is, when I use SingleThreadedModel, it works perfectly. But in Multi threaded model, most of the time some ...

8. Displaying image from a BLOB stored in DB

Hi, I store the bytes of an image inside a BLOB field in a database. I want to be able to display this image beside the other text fields from the same table. One idea is to use a Servlet to deliver the mime type and then spit the bytes to the browser. But to do this, I would have to ...

9. How to convert blob data to image and display

Hi Ranchers, I have stored a pdf file in database as a blob data type. I am getting it through query. I have a search result page where i want to provide a link to view the image of this pdf data. Please tell me how to convert the blob data to the image content in servlet. and set it in ...

11. BLOB(image) -> ByteArrayOutputStream -> display on screen

Hi all, I'm fairly new to java, and as an exercise created a database (mysql), containing a table "photo_tbl" in which resides a couple pictures as BLOBs. I created a java class, shown below that manages to read these images out of my database into a ByteArrayOutputStream. My big question to u: How can I get the ByteArrayOutputStream to display as ...

12. Blob to image and then scale it.

13. converting blob type to image

14. BLOB Images

15. Convert image to blob

A blob is similar to a file stored in the database and accessed via a field in a table. (Actually the field just contains some kind of pointer or "handle"). You need to convert your image as you would to store it in a file (unless it's already in that form), typically use the ImageIO class to covert it to GIF ...

16. How to display the image from db blob data type

You need to write a servlet. This needs to set the content type to the appropriate MIME type (according to the image format you are using). Then open an InputStream from the Blob and copy it to the outputStream from the response with a simply buffer and loop. This servlet is invoked from an IMG tag.

17. Image to BLOB

19. Problem when getting the blob image to DAO

Hi can any body help me how to get the blob data from orcale database I am trying like this Clob descClob = null; descClob = rs.getClob(3); disciplineDTO.setDisciplineDesc( descClob.getSubString(1, Integer.parseInt( ""+descClob.length() ) ) ); Here i am getting the clob data correctly Now i want get the blob filed i.e image Here is what i am writing the code Blob descBlob= ...

20. how to insert an image file as blob using JDBC Statement

In the method body i'm accessing the table fields and values and combining them into the insert sql query. how can i do this using preparedstatment. how do i come to know here in this bean that this value is int or string or date at runtime to use setInt, setString, setdate or setBlob respectively.

21. blob image writing