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Sunday, February 15, 2015

Image resize in java - pass image as byte code and write the output byte code as image file

In this code, variable “byteImageValue” is the actual image byte code.

        byte[] byteResizedImageValue;
        try {
              ByteArrayInputStream inputStream = new ByteArrayInputStream(byteImageValue);
                     ByteArrayOutputStream baos = new ByteArrayOutputStream();
                     byte[] imageInByte = null
                     BufferedImage bufferedImage = ImageIO.read(inputStream);
                     int intResizeWidth = bufferedImage.getWidth()+25;
                     int intResizedHeight = bufferedImage.getHeight()+10;
                     BufferedImage resizedImage = new BufferedImage(intResizeWidth, intResizedHeight, BufferedImage.TYPE_INT_ARGB);
                     Graphics g = resizedImage.getGraphics();
                    
                     g.drawImage(bufferedImage, 0, 0, intResizeWidth, intResizedHeight, null);
               g.dispose();
                     ImageIO.write(resizedImage, "PNG", baos );
               baos.flush();
               imageInByte = baos.toByteArray();
               baos.close();
               byteResizedImageValue = imageInByte; 
              } catch (IOException objImageIOException) {
                     // TODO Auto-generated catch block
                     throw new ScriptException(generalErrorCode,
                    "Invalid image." + objImageIOException.getMessage());
              }

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