Hi,
Recently i wanted to compress images when uploading using Postgresql and hibernate. I implemented below code :
Image compressor utility code below ::
Now in your Upload Action, write below codeRecently i wanted to compress images when uploading using Postgresql and hibernate. I implemented below code :
Image compressor utility code below ::
package com.utils; import java.awt.Graphics2D; import java.awt.Image; import java.awt.image.BufferedImage; import java.awt.image.renderable.ParameterBlock; import java.io.ByteArrayInputStream; import java.io.ByteArrayOutputStream; import java.io.FileNotFoundException; import java.io.IOException; import java.io.InputStream; import java.util.Iterator; import javax.imageio.IIOImage; import javax.imageio.ImageIO; import javax.imageio.ImageWriteParam; import javax.imageio.ImageWriter; import javax.imageio.stream.MemoryCacheImageOutputStream; import javax.media.jai.JAI; import javax.media.jai.RenderedOp; import com.sun.media.jai.codec.SeekableStream; /** * * @author Ujjwal Soni * */ public class ImageCompressor { public byte[] compressFile(byte[] content, String fileName) throws FileNotFoundException { BufferedImage input = null; InputStream ips = null; ByteArrayOutputStream baout = new ByteArrayOutputStream(); try { ips = new ByteArrayInputStream(content); if (fileName.endsWith(".jpg") || fileName.endsWith(".JPG") || fileName.endsWith(".jpeg") || fileName.endsWith(".JPEG")) { input = ImageIO.read(ips); } else if (fileName.endsWith(".gif") || fileName.endsWith(".GIF")) { input = ImageIO.read(ips); } else if (fileName.endsWith(".bmp") || fileName.endsWith(".BMP")) { // Wrap the InputStream in a SeekableStream. SeekableStream s = SeekableStream.wrapInputStream(ips, false); // Create the ParameterBlock and add the SeekableStream to it. ParameterBlock pb = new ParameterBlock(); pb.add(s); // Perform the BMP operation RenderedOp img1 = JAI.create("BMP", pb); input = getBufferedImage(img1.getAsBufferedImage()); } else if (fileName.endsWith(".png") || fileName.endsWith(".PNG")) { SeekableStream s = SeekableStream.wrapInputStream(ips, false); // Create the ParameterBlock and add the SeekableStream to it. ParameterBlock pb = new ParameterBlock(); pb.add(s); // Perform the PNG operation RenderedOp img1 = JAI.create("PNG", pb); input = getBufferedImage(img1.getAsBufferedImage()); } if (input == null) return null; // Get Writer and set compression Iteratoriter = ImageIO.getImageWritersByFormatName("jpg"); if (iter.hasNext()) { ImageWriter writer = (ImageWriter) iter.next(); ImageWriteParam iwp = writer.getDefaultWriteParam(); iwp.setCompressionMode(ImageWriteParam.MODE_EXPLICIT); float values[] = iwp.getCompressionQualityValues(); System.out.println("compression Quality >> "+values[2]); iwp.setCompressionQuality(0.2f); //BufferedImage image = ImageIO.read(ips); IIOImage image1 = new IIOImage(input, null, null); writer.setOutput(new MemoryCacheImageOutputStream(baout)); // writer.write(null, new IIOImage(image, null, null), iwp); writer.write(null, image1, iwp); input.flush(); writer.dispose(); writer = null; image1 = null; input = null; } } catch (FileNotFoundException finfExcp) { System.out.println(finfExcp); } catch (IOException ioExcp) { System.out.println(ioExcp); } return baout.toByteArray(); } private BufferedImage getBufferedImage(Image img) { // if the image is already a BufferedImage, cast and return it // if ((img instanceof BufferedImage)) { // return (BufferedImage) img; // } // otherwise, create a new BufferedImage and draw the original // image on it int w = img.getWidth(null); int h = img.getHeight(null); int thumbWidth = 330; int thumbHeight = 250; // if width is less than 330 keep the width as it is. if (w < thumbWidth) thumbWidth = w; // if height is less than 250 keep the height as it is. if (h < thumbHeight) thumbHeight = h; // if less than 330*250 then do not compress if (w > 330 || h > 250) { double imageRatio = (double) w / (double) h; double thumbRatio = (double) thumbWidth / (double) thumbWidth; if (thumbRatio < imageRatio) { thumbHeight = (int) (thumbWidth / imageRatio); } else { thumbWidth = (int) (thumbHeight * imageRatio); } } // draw original image to thumbnail image object and // scale it to the new size on-the-fly BufferedImage bi = new BufferedImage(thumbWidth, thumbHeight, BufferedImage.TYPE_INT_RGB); Graphics2D g2d = bi.createGraphics(); g2d.drawImage(img, 0, 0, thumbWidth, thumbHeight, null); g2d.dispose(); return bi; } }
for(FileBean fileBean: fileList){ if(fileBean.getActualFile()!=null && fileBean.getActualFile().getFileSize()>0) { //byte[] bFile = new byte[ fileBean.getActualFile().getFileSize()]; byte[] bFile = fileBean.getFileContent(); fileBean.getActualFile().getInputStream().read(bFile); MyDocumentImage mydocimage=new MyDocumentImage(); //MyDocumentImageId mydocimageId=new MyDocumentImageId(); mydocimage.setMyDocImage(new MyDocImageType(fileType)); if (fileBean.getActualFile().getFileName().endsWith(".jpg") || fileBean.getActualFile().getFileName().endsWith(".JPG") || fileBean.getActualFile().getFileName().endsWith(".jpeg") || fileBean.getActualFile().getFileName().endsWith(".JPEG") || fileBean.getActualFile().getFileName().endsWith(".gif") || fileBean.getActualFile().getFileName().endsWith(".GIF") || fileBean.getActualFile().getFileName().endsWith(".bmp") || fileBean.getActualFile().getFileName().endsWith(".BMP") || fileBean.getActualFile().getFileName().endsWith(".png") || fileBean.getActualFile().getFileName().endsWith(".PNG") && fileBean.getActualFile().getFileSize()>300000) { mydocimage.setDocContent(img.compressFile(bFile, fileBean.getActualFile().getFileName())); } else { mydocimage.setDocContent(bFile); } mydocimage.setDocCreatedBy(userId); mydocimage.setDocCreatedDate(new Timestamp(System.currentTimeMillis())); mydocimage.setSdocLatest(true); mydocimage.setSdocMimeType(fileBean.getActualFile().getContentType()); mydocimage.setSdocFileName(fileBean.getActualFile().getFileName()); mydocimage.setDocActive("Y"); mydocimage.setDocVersion(1); //String docSeq = commonDAO.getNextSequence("my_doc.seq"); //mydocimage.setSCode(Integer.valueOf(sdocSeq)); //mydocimage.setSdocDtlCode(fileType); //mydocimage.setSMewCode(staStall.getId().getStaBusCode()); //mydocimage.setSCode(staStall.getId().getStaCode()); //mydocimage.setId(mydocimageId); mydocimage.setDs(dStp); myDocList.getMyDocumentImages().add(mydocimage); } }
Thats it, above code will compress images of particular size. Email me if you need source code or guidance on this.
Cheers,
Ujjwal Soni
4 comments:
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