import java.awt.Container; import java.awt.Graphics; import java.awt.Graphics2D; import java.awt.Image; import java.awt.MediaTracker; import java.awt.Rectangle; import java.awt.RenderingHints; import java.awt.Toolkit; import java.awt.image.BufferedImage; import java.awt.image.CropImageFilter; import java.awt.image.FilteredImageSource; import java.awt.image.ImageFilter; import java.io.BufferedInputStream; import java.io.BufferedOutputStream; import java.io.File; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; import java.util.UUID; import javax.imageio.ImageIO; import com.sun.image.codec.jpeg.JPEGCodec; import com.sun.image.codec.jpeg.JPEGEncodeParam; import com.sun.image.codec.jpeg.JPEGImageEncoder; public class FileUploadUtils { /** * 裁剪图片 * @param input * @param basepath * @param uid * @param x * @param y * @param width * @param height * @return 绝对路径 * @throws IOException */ public static String cutImg(String input,String basepath,int x,int y,int width,int height) throws IOException{ String path2 = basepath+"/"+ConstantUtils.USERFACETEMPPATH; String postfix = getPostfix(input); String dst = path2 +"/"+UUID.randomUUID().toString()+"."+postfix; createDir(path2); imgCut(basepath+input,dst,postfix,x,y,width,height); return dst; } /** * 裁剪图片 * @param input * @param src * @param x * @param y * @param width * @param height * @throws IOException */ public static void imgCut(String input,String dst,String type,int x,int y,int width,int height) throws IOException { BufferedImage fromimg = ImageIO.read(new File(input)); ImageFilter cropFilter = new CropImageFilter(x,y,width,height); Image img = Toolkit.getDefaultToolkit().createImage(new FilteredImageSource(fromimg.getSource(), cropFilter)); BufferedImage tag = new BufferedImage(width,height, BufferedImage.TYPE_INT_RGB); Graphics g = tag.getGraphics(); g.drawImage(img, 0, 0, null); // 绘制小图 g.dispose(); // 输出为文件 // dir = "d:\\temp\\cut_image_" + i + "_" + j + ".jpg"; File f = new File(dst); ImageIO.write(tag,type, f); } /** * 上传头像文件 * @param src * @param basepath * @param filename * @return * @throws Exception */ public static String uploadImg(File src,String basepath,String filename) throws Exception{ String daypath = DateTools.getYear() + "" + DateTools.getMonth() + "" + DateTools.getMonthWeek(); String temppath = ConstantUtils.BASEUPLOADPATH+"/"+ConstantUtils.ORIGINALIMGPATH+"/" + daypath; String thumbnailpath = ConstantUtils.BASEUPLOADPATH+"/"+ConstantUtils.THUMBNAILIMGPATH+"/" + daypath; String postfix = getPostfix(filename); String uuid = UUID.randomUUID().toString(); String dsttempname = uuid+"."+postfix; createDir(basepath +"/"+temppath); createDir (basepath +"/"+ thumbnailpath); String dstallpath = basepath +"/"+temppath+"/"+dsttempname; String dstthumbnailpath = basepath +"/"+thumbnailpath+"/"+dsttempname; copy(src,new File(dstallpath)); //对上传的文件进行 等比例 裁剪。 按照前段要展现的 height width Thumbnail(dstallpath,dstthumbnailpath,350,300,100); //返回裁剪后的路径 return thumbnailpath+"/"+dsttempname; } /** * 上传文件 * @param src * @param dst * @throws Exception */ public static void copy(File src, File dst) throws Exception { try { InputStream in = null; OutputStream out = null; try { in = new BufferedInputStream(new FileInputStream(src), ConstantUtils.BUFFER_SIZE); out = new BufferedOutputStream(new FileOutputStream(dst), ConstantUtils.BUFFER_SIZE); byte[] buffer = new byte[ConstantUtils.BUFFER_SIZE]; while (in.read(buffer) > 0) { out.write(buffer); } } finally { if (null != in) { in.close(); } if (null != out) { out.close(); } } } catch (Exception e) { e.printStackTrace(); throw e; } } /** * 得到文件后缀 jpg * @param fileName * @return */ public static String getPostfix(String fileName){ if (fileName.equals("")) return ""; int pos = fileName.lastIndexOf("."); if (pos < 0) { return fileName.substring(fileName.length() - 3).toLowerCase(); } else { return fileName.substring(pos+1).toLowerCase(); } } /** * 创建目录 * @param filePath */ public static void createDir(String filePath) { File myFile = new File(filePath); if (!myFile.exists()) { if (!myFile.mkdirs()) System.out.println("创建目录 fail"); else System.out.println("创建目录 success"); } myFile = null; } /** * 等比例缩放图片 * @param infile * @param outfile * @param width * @param height * @param quality * @throws IOException * @throws InterruptedException */ public static void Thumbnail(String infile, String outfile, int width, int height, int quality) throws IOException, InterruptedException { // save thumbnail image to OUTFILE //System.out.println("infile:" + infile); BufferedImage thumbImage = null; BufferedOutputStream out = null; Image image = null; image = Toolkit.getDefaultToolkit().createImage(infile); MediaTracker mediaTracker = new MediaTracker(new Container()); mediaTracker.addImage(image, 0); mediaTracker.waitForID(0); int thumbWidth = width; int thumbHeight = height; double thumbRatio = (double) thumbWidth / (double) thumbHeight; int imageWidth = image.getWidth(null); int imageHeight = image.getHeight(null); double imageRatio = (double) imageWidth / (double) imageHeight; if (thumbRatio < imageRatio) { thumbHeight = (int) (thumbWidth / imageRatio); } else { thumbWidth = (int) (thumbHeight * imageRatio); } thumbImage = new BufferedImage(thumbWidth, thumbHeight, BufferedImage.TYPE_INT_RGB); Graphics2D graphics2D = thumbImage.createGraphics(); graphics2D.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BILINEAR); graphics2D.drawImage(image,0,0, thumbWidth, thumbHeight, null); out = new BufferedOutputStream(new FileOutputStream(outfile)); JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out); JPEGEncodeParam param = encoder.getDefaultJPEGEncodeParam(thumbImage); quality = Math.max(0, Math.min(quality, 100)); param.setQuality((float) quality / 100.0f, false); encoder.setJPEGEncodeParam(param); encoder.encode(thumbImage); out.close(); thumbImage = null; out = null; image = null; } }
