如何将图片变成小图标

要将接收到的图片按照一定比例缩小成小图标的形式,然后点击这个图标原图就会显示出来,这个要怎么做?我是个渣渣,恳求大神给予指导.如果有代码那就更好了.非常感谢各位的帮助..

 //如果是图片文件，则执行缩放处理
             Path source = Paths.get(newFilePath);
             String contentType = Files.probeContentType(source);
             if (contentType.startsWith("image")){
                    String thumbPath = this.getImgAbsolutePath(request, file.getOriginalFilename(), "thumb");
                    System.out.println(thumbPath);
                    //ImageUtils.getThumbnail(newFilePath, thumbPath, 94, 222);
                    File resizedFile = new File(thumbPath);
                    try{
                        ImageUtils.resize(uploadFile, resizedFile, 222, 1.0F);
                    } catch (Exception e) {
                        FileCopyUtils.copy(file.getBytes(), resizedFile);
                        e.printStackTrace();
                    }
             }

百度自己所使用的语言如何生成缩略图。

点击小图生成打开可以用fancybox，jquery colorbox等jquery图片插件

Android中图片缩放方法

图片缩放算法-C/VC/C++

不知道你是什么环境，只能先给你两个示例。

    @SuppressWarnings("restriction")
    public static void resize(File originalFile, File resizedFile,
            int newWidth, float quality) throws IOException {

        if (quality > 1) {
            throw new IllegalArgumentException(
                    "Quality has to be between 0 and 1");
        }

        ImageIcon ii = new ImageIcon(originalFile.getCanonicalPath());
        Image i = ii.getImage();
        Image resizedImage = null;

        int iWidth = i.getWidth(null);
        int iHeight = i.getHeight(null);

        if (iWidth > iHeight) {
            resizedImage = i.getScaledInstance(newWidth, (newWidth * iHeight)
                    / iWidth, Image.SCALE_SMOOTH);
        } else {
            resizedImage = i.getScaledInstance((newWidth * iWidth) / iHeight,
                    newWidth, Image.SCALE_SMOOTH);
        }

        // This code ensures that all the pixels in the image are loaded.
        Image temp = new ImageIcon(resizedImage).getImage();

        // Create the buffered image.
        BufferedImage bufferedImage = new BufferedImage(temp.getWidth(null),
                temp.getHeight(null), BufferedImage.TYPE_INT_RGB);

        // Copy image to buffered image.
        Graphics g = bufferedImage.createGraphics();

        // Clear background and paint the image.
        g.setColor(Color.white);
        g.fillRect(0, 0, temp.getWidth(null), temp.getHeight(null));
        g.drawImage(temp, 0, 0, null);
        g.dispose();

        // Soften.
        float softenFactor = 0.05f;
        float[] softenArray = { 0, softenFactor, 0, softenFactor,
                1 - (softenFactor * 4), softenFactor, 0, softenFactor, 0 };
        Kernel kernel = new Kernel(3, 3, softenArray);
        ConvolveOp cOp = new ConvolveOp(kernel, ConvolveOp.EDGE_NO_OP, null);
        bufferedImage = cOp.filter(bufferedImage, null);

        // Write the jpeg to a file.
        FileOutputStream out = new FileOutputStream(resizedFile);

        // Encodes image as a JPEG data stream
        JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);

        JPEGEncodeParam param = encoder
                .getDefaultJPEGEncodeParam(bufferedImage);

        param.setQuality(quality, true);

        encoder.setJPEGEncodeParam(param);
        encoder.encode(bufferedImage);
        out.flush();
        out.close();
    }