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Search results for 'Image Resizing'. 1 post(s) found.

2009/06/03 How to resize image ?

2009/06/03 19:57

How to resize image ?

2009/06/03 19:57 in JSP

Here's the simple example can resizing source image:

<%@ page import="java.io.*,
java.awt.*,
java.awt.image.*,
javax.swing.*,
com.sun.image.codec.jpeg.*"
contentType="text/html;charset=MS949" %>
<%!
public static void createthumbnail(String soruce, String target, int targetW) throws Exception
{
Image imgSource = new ImageIcon(soruce).getImage();

int oldW = imgSource.getWidth(null);
int oldH = imgSource.getHeight(null);

int newW = targetW;
int newH = (targetW * oldH) / oldW;

Image imgTarget = imgSource.getScaledInstance(newW, newH, Image.SCALE_SMOOTH);

int pixels[] = new int[newW * newH];

PixelGrabber pg = new PixelGrabber(imgTarget, 0, 0, newW, newH, pixels, 0, newW);
pg.grabPixels();

BufferedImage bi = new BufferedImage(newW, newH, BufferedImage.TYPE_INT_RGB);
bi.setRGB(0, 0, newW, newH, pixels, 0, newW);

FileOutputStream fos = new FileOutputStream(target);

JPEGImageEncoder jpeg = JPEGCodec.createJPEGEncoder(fos);

JPEGEncodeParam jep = jpeg.getDefaultJPEGEncodeParam(bi);
jep.setQuality(1, false);

jpeg.encode(bi, jep);

fos.close();
}
%>
<%
createthumbnail("c:/inetpub/c/big.jpg","c:/inetpub/c/big_result.jpg",320);
%>

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