帮路遥做的批量处理二维码图片

主要代码，其他代码参考https://www.cnblogs.com/xz-luckydog/p/6402568.html

docker run -d -p 8085:8082 --name=qr_server -v /opt/data:/opt/data 192.168.1.129:5000/qrserver:1.0.0

PS : 代码Github地址

import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.util.HashMap;
import java.util.Hashtable;
import java.util.Map;

import javax.imageio.ImageIO;
import javax.swing.JFrame;

import com.google.zxing.BarcodeFormat;
import com.google.zxing.Binarizer;
import com.google.zxing.BinaryBitmap;
import com.google.zxing.DecodeHintType;
import com.google.zxing.EncodeHintType;
import com.google.zxing.LuminanceSource;
import com.google.zxing.MultiFormatReader;
import com.google.zxing.MultiFormatWriter;
import com.google.zxing.NotFoundException;
import com.google.zxing.Result;
import com.google.zxing.WriterException;
import com.google.zxing.common.BitMatrix;
import com.google.zxing.common.HybridBinarizer;
import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;

public class Main  extends JFrame{
    //C:\Users\bee\Desktop\
    public static String srcAddress = "C:\\Users\\bee\\Desktop";//输入图片路径
    public static String desAddress = "C:\\Users\\bee\\Desktop";//输出图片路径
    public static int width = 400;    //二维码图片的宽
    public static int height = 400;   //二维码图片的高
    public static String format = "png";  //二维码图片的格式

    // 创建按钮
/*     private static JButton button = new JButton("一键运行");
     private static JLabel tip = new JLabel("提示:空");*/
    
    public Main(){
        /*setLayout(new GridLayout(2, 1));
        add(button);
        add(tip);*/
    }
    
    public static void main(String[] args) {
        
        /*Main frame = new Main();
        frame.setTitle("批二维码处理");
        frame.setSize(500, 125);
        frame.setLocationRelativeTo(null);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setVisible(true);*/
         File[] files = new File(srcAddress).listFiles();
          for (int i = 0; i < files.length; i++)
            {
              if(files[i].getName().replaceAll("(.jpg)+","").length() != files[i].getName().length()){//是jpg图片替换成png
                   convert("C:\\Users\\bee\\Desktop\\"+files[i].getName(), "png", "C:\\Users\\bee\\Desktop\\"+files[i].getName().substring(0, files[i].getName().length()-4)+".png");
                     System.out.println(files[i].getName()+"替换文件，删除jpg");
                     files[i].delete();//删除图片
                }
            }
        myEvent();
        
        
    }
    
    private static void myEvent(){
    /*    //鼠标监听
         button.addMouseListener(new MouseAdapter(){
             //单击事件
             public void mouseClicked(MouseEvent e){*/
                 // System.out.println("鼠标被单击了");
                  File[] files = new File(srcAddress).listFiles();
                 /* for (int i = 0; i < files.length; i++)
                    {
                      if(files[i].getName().replaceAll("(.jpg)+","").length() != files[i].getName().length()){//是jpg图片替换成png
                            convert("C:\\Users\\bee\\Desktop\\"+files[i].getName(), "png", "C:\\Users\\bee\\Desktop\\"+files[i].getName().substring(0, files[i].getName().length()-4)+".png");
                             System.out.println(files[i].getName()+"替换文件，删除jpg");
                             files[i].delete();//删除图片
                        }
                    }*/
                  int sucNum = 0;
                  int picNum = 0;
                  int losNum = 0;
                    for (int i = 0; i < files.length; i++)
                    {    //判断是否是图片
                        
                        if(files[i].getName().replaceAll("(.png|.bmp)+","").length() != files[i].getName().length())
                        {
                            
                            picNum++;
                            System.out.println(files[i].getName());
                            //判断图片是否是二维码
                            
                            if(isQR(files[i].getName())){//是二维码
                                
                                /* try {
                                     toMyTest(files[i].getName());
                                 } catch (NotFoundException ex) {
                                     //return false;
                                 }*/
                                 toMyTest(files[i].getName());
                                 System.out.println("*************************************************");
                                 sucNum++;
                            }else{
                                losNum++;
                            }
                        }
                    }
                    System.out.println("提示:您好，桌面图片个数"+picNum+"个，成功"+sucNum+"个，失败"+(losNum)+"个");
                    //JOptionPane.showMessageDialog(null,"您好，桌面图片个数"+picNum+"个，成功"+sucNum+"个，失败"+(losNum)+"个","运行结果",JOptionPane.WARNING_MESSAGE);
            // }
        // });
    }
    
    protected static boolean isQR(String name) {
        try {
            
        } catch (Exception e) {
            return false;
        }
        return true;
    }

    @SuppressWarnings("unused")
    private static void toMyTest(String fileName){
         
            try {
                String filePath = srcAddress+"\\"+fileName;//输入图片路径
                String text = parseQRCode(filePath );//解析二维码
                
                //生成二维码图片，并返回图片路径
                String pathName = generateQRCode(text, width, height, format,fileName);
                System.out.println("生成二维码的图片路径： " + pathName);

                String content = parseQRCode(pathName);
                System.out.println("解析出二维码的图片的内容为： " + content);
            } catch (Exception e) {
                e.printStackTrace();
            }
    }
    
    /**
     * 根据内容，生成指定宽高、指定格式的二维码图片
     *
     * @param text   内容
     * @param width  宽
     * @param height 高
     * @param format 图片格式
     * @return 生成的二维码图片路径
     * @throws IOException 
     * @throws WriterException 
     * @throws Exception
     */
    private static String generateQRCode(String text, int width, int height, String format,String fileName) throws NotFoundException, IOException, WriterException {
        Hashtable<EncodeHintType, Object> hints = new Hashtable<>();
        hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.Q);//容错率
        hints.put(EncodeHintType.MARGIN, 1);//边距
        BitMatrix bitMatrix1 = new MultiFormatWriter().encode(text, BarcodeFormat.QR_CODE, width, height, hints);
        BitMatrix bitMatrix = updateBit(bitMatrix1, 20);//自定义边框
        String pathName = desAddress+"\\"+(fileName.substring(0,fileName.indexOf("."))+".png");
     
        File outputFile = new File(pathName);
        MatrixToImageWriter.writeToFile(bitMatrix, format, outputFile);
        return pathName;
    }
    /**
     * 解决自定义边距问题
     * @param matrix
     * @param margin
     * @return
     */
    @SuppressWarnings("unused")
    private static BitMatrix updateBit(BitMatrix matrix, int margin){
        int tempM = margin*2;
       int[] rec = matrix.getEnclosingRectangle();   //获取二维码图案的属性
            int resWidth = rec[2] + tempM;
            int resHeight = rec[3] + tempM;
            BitMatrix resMatrix = new BitMatrix(resWidth, resHeight); // 按照自定义边框生成新的BitMatrix
            resMatrix.clear();
        for(int i= margin; i < resWidth- margin; i++){   //循环，将二维码图案绘制到新的bitMatrix中
            for(int j=margin; j < resHeight-margin; j++){
                if(matrix.get(i-margin + rec[0], j-margin + rec[1])){
                    resMatrix.set(i,j);
                }
            }
        }
         return resMatrix;
    }

    /**
     * 解析指定路径下的二维码图片
     *
     * @param filePath 二维码图片路径
     * @return
     */
    private static String parseQRCode(String filePath) {
        String content = "";
        try {
            File file = new File(filePath);
            BufferedImage image = ImageIO.read(file);
            LuminanceSource source = new BufferedImageLuminanceSource(image);
            Binarizer binarizer = new HybridBinarizer(source);
            BinaryBitmap binaryBitmap = new BinaryBitmap(binarizer);
            Map<DecodeHintType, Object> hints = new HashMap<>();
            hints.put(DecodeHintType.CHARACTER_SET, "UTF-8");
            MultiFormatReader formatReader = new MultiFormatReader();
            Result result = formatReader.decode(binaryBitmap, hints);

            System.out.println("result 为：" + result.toString());
            System.out.println("resultFormat 为：" + result.getBarcodeFormat());
            System.out.println("resultText 为：" + result.getText());
            //设置返回值
            content = result.getText();
        } catch (Exception e) {
            e.printStackTrace();
        }
        return content;
    }
    
    /**
    *
    * @param source 源图片路径
    * @param formatName 将要转换的图片格式
    * @param result 目标图片路径
    */
   public static void convert(String source, String formatName, String result) { 
       try { 
           File f = new File(source); 
           f.canRead(); 
           BufferedImage src = ImageIO.read(f); 
           ImageIO.write(src, formatName, new File(result)); 
       } catch (Exception e) {
           e.printStackTrace(); 
       } 
   } 
}

 

 图片处理操作

import java.awt.AlphaComposite;
import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.Toolkit;
import java.awt.color.ColorSpace;
import java.awt.geom.AffineTransform;
import java.awt.image.AffineTransformOp;
import java.awt.image.BufferedImage;
import java.awt.image.ColorConvertOp;
import java.awt.image.CropImageFilter;
import java.awt.image.FilteredImageSource;
import java.awt.image.ImageFilter;
import java.io.File;
import java.io.IOException;
import javax.imageio.ImageIO;

public class ImageUtils {


    /**
     * 几种常见的图片格式
     */
    public static String IMAGE_TYPE_GIF = "gif";// 图形交换格式
    public static String IMAGE_TYPE_JPG = "jpg";// 联合照片专家组
    public static String IMAGE_TYPE_JPEG = "jpeg";// 联合照片专家组
    public static String IMAGE_TYPE_BMP = "bmp";// 英文Bitmap（位图）的简写，它是Windows操作系统中的标准图像文件格式
    public static String IMAGE_TYPE_PNG = "png";// 可移植网络图形
    public static String IMAGE_TYPE_PSD = "psd";// Photoshop的专用格式Photoshop


    /**
     * 程序入口：用于测试
     * @param args
     */
    public static void main(String[] args) {
        // 1-缩放图像：
        // 方法一：按比例缩放
      //  ImageUtils.scale("C:/Users/bee/Desktop/test/timg.jpg", "C:/Users/bee/Desktop/test/abc_scale.jpg", 2, true);//测试OK
        // 方法二：按高度和宽度缩放
       // ImageUtils.scale2("C:/Users/bee/Desktop/test/timg.jpg", "C:/Users/bee/Desktop/test/abc_scale2.jpg", 500, 300, true);//测试OK

        
        // 2-切割图像：
        // 方法一：按指定起点坐标和宽高切割,单位是像素
         ImageUtils.cut("C:/Users/bee/Desktop/test/timg.jpg", "C:/Users/bee/Desktop/test/abc_cut.jpg", 0, 0, 400, 400 );//测试OK
        // 方法二：指定切片的行数和列数:如下切成四分
            // ImageUtils.cut2("C:/Users/bee/Desktop/test/timg.jpg", "C:/Users/bee/Desktop/test/", 2, 2 );//测试OK
        // 方法三：指定切片的宽度和高度
        //ImageUtils.cut3("C:/Users/bee/Desktop/test/timg.jpg", "C:/Users/bee/Desktop/test/", 300, 300 );//测试OK


        // 3-图像类型转换：
        //ImageUtils.convert("e:/abc.jpg", "GIF", "e:/abc_convert.gif");//测试OK
        /*
 
        // 4-彩色转黑白：
       // ImageUtils.gray("C:/Users/bee/Desktop/test/timg.jpg", "C:/Users/bee/Desktop/test/abc_gray.jpg");//测试OK


        // 5-给图片添加文字水印：x：负数向左，正数向右     y：负数向上，正数向下
      // 方法一：
       // ImageUtils.pressText("我是水印文字","C:/Users/bee/Desktop/test/timg.jpg", "C:/Users/bee/Desktop/test/abc_pressText.jpg","微软雅黑",Font.BOLD,Color.red,80, -100, -100, 0.5f);//测试OK
        // 方法二：
     //  ImageUtils.pressText2("我也是水印文字", "C:/Users/bee/Desktop/test/timg.jpg", "C:/Users/bee/Desktop/test/abc_pressText2.jpg", "黑体", 36, Color.white, 80, 0, 0, 0.5f);//测试OK
        
        // 6-给图片添加图片水印：
      //  ImageUtils.pressImage("e:/abc2.jpg", "e:/abc.jpg","e:/abc_pressImage.jpg", 0, 0, 0.5f);//测试OK
       * 
       */
   }


    /**
     * 缩放图像（按比例缩放）
     * @param srcImageFile 源图像文件地址
     * @param result 缩放后的图像地址
     * @param scale 缩放比例
     * @param flag 缩放选择:true 放大; false 缩小;
     */
    public final static void scale(String srcImageFile, String result,
            int scale, boolean flag) {
        try {
            BufferedImage src = ImageIO.read(new File(srcImageFile)); // 读入文件
            int width = src.getWidth(); // 得到源图宽
            int height = src.getHeight(); // 得到源图长
            if (flag) {// 放大
                width = width * scale;
                height = height * scale;
            } else {// 缩小
                width = width / scale;
                height = height / scale;
            }
            Image image = src.getScaledInstance(width, height,
                    Image.SCALE_DEFAULT);
            BufferedImage tag = new BufferedImage(width, height,
                    BufferedImage.TYPE_INT_RGB);
            Graphics g = tag.getGraphics();
            g.drawImage(image, 0, 0, null); // 绘制缩小后的图
            g.dispose();
            ImageIO.write(tag, "JPEG", new File(result));// 输出到文件流
        } catch (IOException e) {
            e.printStackTrace();
        }
    }


    /**
     * 缩放图像（按高度和宽度缩放）
     * @param srcImageFile 源图像文件地址
     * @param result 缩放后的图像地址
     * @param height 缩放后的高度
     * @param width 缩放后的宽度
     * @param bb 比例不对时是否需要补白：true为补白; false为不补白;
     */
    public final static void scale2(String srcImageFile, String result, int height, int width, boolean bb) {
        try {
            double ratio = 0.0; // 缩放比例
            File f = new File(srcImageFile);
            BufferedImage bi = ImageIO.read(f);
            Image itemp = bi.getScaledInstance(width, height, bi.SCALE_SMOOTH);
            // 计算比例
            if ((bi.getHeight() > height) || (bi.getWidth() > width)) {
                if (bi.getHeight() > bi.getWidth()) {
                    ratio = (new Integer(height)).doubleValue()
                            / bi.getHeight();
                } else {
                    ratio = (new Integer(width)).doubleValue() / bi.getWidth();
                }
                AffineTransformOp op = new AffineTransformOp(AffineTransform
                        .getScaleInstance(ratio, ratio), null);
                itemp = op.filter(bi, null);
            }
            if (bb) {//补白
                BufferedImage image = new BufferedImage(width, height,
                        BufferedImage.TYPE_INT_RGB);
                Graphics2D g = image.createGraphics();
                g.setColor(Color.white);
                g.fillRect(0, 0, width, height);
                if (width == itemp.getWidth(null))
                    g.drawImage(itemp, 0, (height - itemp.getHeight(null)) / 2,
                            itemp.getWidth(null), itemp.getHeight(null),
                            Color.white, null);
                else
                    g.drawImage(itemp, (width - itemp.getWidth(null)) / 2, 0,
                            itemp.getWidth(null), itemp.getHeight(null),
                            Color.white, null);
                g.dispose();
                itemp = image;
            }
            ImageIO.write((BufferedImage) itemp, "JPEG", new File(result));
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
    
    /**
     * 图像切割(按指定起点坐标和宽高切割)
     * @param srcImageFile 源图像地址
     * @param result 切片后的图像地址
     * @param x 目标切片起点坐标X
     * @param y 目标切片起点坐标Y
     * @param width 目标切片宽度
     * @param height 目标切片高度
     */
    public final static void cut(String srcImageFile, String result,
            int x, int y, int width, int height) {
        try {
            // 读取源图像
            BufferedImage bi = ImageIO.read(new File(srcImageFile));
            int srcWidth = bi.getHeight(); // 源图宽度
            int srcHeight = bi.getWidth(); // 源图高度
            if (srcWidth > 0 && srcHeight > 0) {
                Image image = bi.getScaledInstance(srcWidth, srcHeight,
                        Image.SCALE_DEFAULT);
                // 四个参数分别为图像起点坐标和宽高
                // 即: CropImageFilter(int x,int y,int width,int height)
                ImageFilter cropFilter = new CropImageFilter(x, y, width, height);
                Image img = Toolkit.getDefaultToolkit().createImage(
                        new FilteredImageSource(image.getSource(),
                                cropFilter));
                BufferedImage tag = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
                Graphics g = tag.getGraphics();
                g.drawImage(img, 0, 0, width, height, null); // 绘制切割后的图
                g.dispose();
                // 输出为文件
                ImageIO.write(tag, "JPEG", new File(result));
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
    
    /**
     * 图像切割（指定切片的行数和列数）
     * @param srcImageFile 源图像地址
     * @param descDir 切片目标文件夹
     * @param rows 目标切片行数。默认2，必须是范围 [1, 20] 之内
     * @param cols 目标切片列数。默认2，必须是范围 [1, 20] 之内
     */
    public final static void cut2(String srcImageFile, String descDir,
            int rows, int cols) {
        try {
            if(rows<=0||rows>20) rows = 2; // 切片行数
            if(cols<=0||cols>20) cols = 2; // 切片列数
            // 读取源图像
            BufferedImage bi = ImageIO.read(new File(srcImageFile));
            int srcWidth = bi.getHeight(); // 源图宽度
            int srcHeight = bi.getWidth(); // 源图高度
            if (srcWidth > 0 && srcHeight > 0) {
                Image img;
                ImageFilter cropFilter;
                Image image = bi.getScaledInstance(srcWidth, srcHeight, Image.SCALE_DEFAULT);
                int destWidth = srcWidth; // 每张切片的宽度
                int destHeight = srcHeight; // 每张切片的高度
                // 计算切片的宽度和高度
                if (srcWidth % cols == 0) {
                    destWidth = srcWidth / cols;
                } else {
                    destWidth = (int) Math.floor(srcWidth / cols) + 1;
                }
                if (srcHeight % rows == 0) {
                    destHeight = srcHeight / rows;
                } else {
                    destHeight = (int) Math.floor(srcWidth / rows) + 1;
                }
                // 循环建立切片
                // 改进的想法:是否可用多线程加快切割速度
                for (int i = 0; i < rows; i++) {
                    for (int j = 0; j < cols; j++) {
                        // 四个参数分别为图像起点坐标和宽高
                        // 即: CropImageFilter(int x,int y,int width,int height)
                        cropFilter = new CropImageFilter(j * destWidth, i * destHeight,
                                destWidth, destHeight);
                        img = Toolkit.getDefaultToolkit().createImage(
                                new FilteredImageSource(image.getSource(),
                                        cropFilter));
                        BufferedImage tag = new BufferedImage(destWidth,
                                destHeight, BufferedImage.TYPE_INT_RGB);
                        Graphics g = tag.getGraphics();
                        g.drawImage(img, 0, 0, null); // 绘制缩小后的图
                        g.dispose();
                        // 输出为文件
                        ImageIO.write(tag, "JPEG", new File(descDir
                                + "_r" + i + "_c" + j + ".jpg"));
                    }
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }


    /**
     * 图像切割（指定切片的宽度和高度）
     * @param srcImageFile 源图像地址
     * @param descDir 切片目标文件夹
     * @param destWidth 目标切片宽度。默认200
     * @param destHeight 目标切片高度。默认150
     */
    public final static void cut3(String srcImageFile, String descDir,
            int destWidth, int destHeight) {
        try {
            if(destWidth<=0) destWidth = 200; // 切片宽度
            if(destHeight<=0) destHeight = 150; // 切片高度
            // 读取源图像
            BufferedImage bi = ImageIO.read(new File(srcImageFile));
            int srcWidth = bi.getHeight(); // 源图宽度
            int srcHeight = bi.getWidth(); // 源图高度
            if (srcWidth > destWidth && srcHeight > destHeight) {
                Image img;
                ImageFilter cropFilter;
                Image image = bi.getScaledInstance(srcWidth, srcHeight, Image.SCALE_DEFAULT);
                int cols = 0; // 切片横向数量
                int rows = 0; // 切片纵向数量
                // 计算切片的横向和纵向数量
                if (srcWidth % destWidth == 0) {
                    cols = srcWidth / destWidth;
                } else {
                    cols = (int) Math.floor(srcWidth / destWidth) + 1;
                }
                if (srcHeight % destHeight == 0) {
                    rows = srcHeight / destHeight;
                } else {
                    rows = (int) Math.floor(srcHeight / destHeight) + 1;
                }
                // 循环建立切片
                // 改进的想法:是否可用多线程加快切割速度
                for (int i = 0; i < rows; i++) {
                    for (int j = 0; j < cols; j++) {
                        // 四个参数分别为图像起点坐标和宽高
                        // 即: CropImageFilter(int x,int y,int width,int height)
                        cropFilter = new CropImageFilter(j * destWidth, i * destHeight,
                                destWidth, destHeight);
                        img = Toolkit.getDefaultToolkit().createImage(
                                new FilteredImageSource(image.getSource(),
                                        cropFilter));
                        BufferedImage tag = new BufferedImage(destWidth,
                                destHeight, BufferedImage.TYPE_INT_RGB);
                        Graphics g = tag.getGraphics();
                        g.drawImage(img, 0, 0, null); // 绘制缩小后的图
                        g.dispose();
                        // 输出为文件
                        ImageIO.write(tag, "JPEG", new File(descDir
                                + "_r" + i + "_c" + j + ".jpg"));
                    }
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }


    /**
     * 图像类型转换：GIF->JPG、GIF->PNG、PNG->JPG、PNG->GIF(X)、BMP->PNG
     * @param srcImageFile 源图像地址
     * @param formatName 包含格式非正式名称的 String：如JPG、JPEG、GIF等
     * @param destImageFile 目标图像地址
     */
    public final static void convert(String srcImageFile, String formatName, String destImageFile) {
        try {
            File f = new File(srcImageFile);
            f.canRead();
            f.canWrite();
            BufferedImage src = ImageIO.read(f);
            ImageIO.write(src, formatName, new File(destImageFile));
        } catch (Exception e) {
            e.printStackTrace();
        }
    }


    /**
     * 彩色转为黑白 
     * @param srcImageFile 源图像地址
     * @param destImageFile 目标图像地址
     */
    public final static void gray(String srcImageFile, String destImageFile) {
        try {
            BufferedImage src = ImageIO.read(new File(srcImageFile));
            ColorSpace cs = ColorSpace.getInstance(ColorSpace.CS_GRAY);
            ColorConvertOp op = new ColorConvertOp(cs, null);
            src = op.filter(src, null);
            ImageIO.write(src, "JPEG", new File(destImageFile));
        } catch (IOException e) {
            e.printStackTrace();
        }
    }


    /**
     * 给图片添加文字水印
     * @param pressText 水印文字
     * @param srcImageFile 源图像地址
     * @param destImageFile 目标图像地址
     * @param fontName 水印的字体名称
     * @param fontStyle 水印的字体样式
     * @param color 水印的字体颜色
     * @param fontSize 水印的字体大小
     * @param x 修正值
     * @param y 修正值
     * @param alpha 透明度：alpha 必须是范围 [0.0, 1.0] 之内（包含边界值）的一个浮点数字
     */
    public final static void pressText(String pressText,
            String srcImageFile, String destImageFile, String fontName,
            int fontStyle, Color color, int fontSize,int x,
            int y, float alpha) {
        try {
            File img = new File(srcImageFile);
            Image src = ImageIO.read(img);
            int width = src.getWidth(null);
            int height = src.getHeight(null);
            BufferedImage image = new BufferedImage(width, height,
                    BufferedImage.TYPE_INT_RGB);
            Graphics2D g = image.createGraphics();
            g.drawImage(src, 0, 0, width, height, null);
            g.setColor(color);
            g.setFont(new Font(fontName, fontStyle, fontSize));
            g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_ATOP,
                    alpha));
            // 在指定坐标绘制水印文字
            g.drawString(pressText, (width - (getLength(pressText) * fontSize))
                    / 2 + x, (height - fontSize) / 2 + y);
            g.dispose();
            ImageIO.write((BufferedImage) image, "JPEG", new File(destImageFile));// 输出到文件流
        } catch (Exception e) {
            e.printStackTrace();
        }
    }


    /**
     * 给图片添加文字水印
     * @param pressText 水印文字
     * @param srcImageFile 源图像地址
     * @param destImageFile 目标图像地址
     * @param fontName 字体名称
     * @param fontStyle 字体样式
     * @param color 字体颜色
     * @param fontSize 字体大小
     * @param x 修正值
     * @param y 修正值
     * @param alpha 透明度：alpha 必须是范围 [0.0, 1.0] 之内（包含边界值）的一个浮点数字
     */
    public final static void pressText2(String pressText, String srcImageFile,String destImageFile,
            String fontName, int fontStyle, Color color, int fontSize, int x,
            int y, float alpha) {
        try {
            File img = new File(srcImageFile);
            Image src = ImageIO.read(img);
            int width = src.getWidth(null);
            int height = src.getHeight(null);
            BufferedImage image = new BufferedImage(width, height,
                    BufferedImage.TYPE_INT_RGB);
            Graphics2D g = image.createGraphics();
            g.drawImage(src, 0, 0, width, height, null);
            g.setColor(color);
            g.setFont(new Font(fontName, fontStyle, fontSize));
            g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_ATOP,
                    alpha));
            // 在指定坐标绘制水印文字
            g.drawString(pressText, (width - (getLength(pressText) * fontSize))
                    / 2 + x, (height - fontSize) / 2 + y);
            g.dispose();
            ImageIO.write((BufferedImage) image, "JPEG", new File(destImageFile));
        } catch (Exception e) {
            e.printStackTrace();
        }
    }


    /**
     * 给图片添加图片水印
     * @param pressImg 水印图片
     * @param srcImageFile 源图像地址
     * @param destImageFile 目标图像地址
     * @param x 修正值。 默认在中间
     * @param y 修正值。 默认在中间
     * @param alpha 透明度：alpha 必须是范围 [0.0, 1.0] 之内（包含边界值）的一个浮点数字
     */
    public final static void pressImage(String pressImg, String srcImageFile,String destImageFile,
            int x, int y, float alpha) {
        try {
            File img = new File(srcImageFile);
            Image src = ImageIO.read(img);
            int wideth = src.getWidth(null);
            int height = src.getHeight(null);
            BufferedImage image = new BufferedImage(wideth, height,
                    BufferedImage.TYPE_INT_RGB);
            Graphics2D g = image.createGraphics();
            g.drawImage(src, 0, 0, wideth, height, null);
            // 水印文件
            Image src_biao = ImageIO.read(new File(pressImg));
            int wideth_biao = src_biao.getWidth(null);
            int height_biao = src_biao.getHeight(null);
            g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_ATOP,
                    alpha));
            g.drawImage(src_biao, (wideth - wideth_biao) / 2,
                    (height - height_biao) / 2, wideth_biao, height_biao, null);
            // 水印文件结束
            g.dispose();
            ImageIO.write((BufferedImage) image,  "JPEG", new File(destImageFile));
        } catch (Exception e) {
            e.printStackTrace();
        }
    }


    /**
     * 计算text的长度（一个中文算两个字符）
     * @param text
     * @return
     */
    public final static int getLength(String text) {
        int length = 0;
        for (int i = 0; i < text.length(); i++) {
            if (new String(text.charAt(i) + "").getBytes().length > 1) {
                length += 2;
            } else {
                length += 1;
            }
        }
        return length / 2;
    }
}

图片合并

 

//package com.hcj.july19.am;
//导入需要的包
import java.io.*;
import java.io.File;
import java.io.FileOutputStream;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.image.BufferedImage;
 
/*
 * 当导入一下这两个包时，MyEclipse会报错：
 * Access restriction: The type JPEGImageEncoder is not accessible due to 
restriction on required library C:\Java\jre1.6.0_07\lib\rt.jar
 * 解决方法
 * Eclipse默认把这些受访问限制的API设成了ERROR。
 * 只要把Windows-Preferences-Java-Complicer-Errors/Warnings里面的
 * Deprecated and restricted API中的Forbidden references(access rules)选为Warning就可以编译通过。
 */
import com.sun.image.codec.jpeg.JPEGCodec;
import com.sun.image.codec.jpeg.JPEGImageEncoder;
 
public class ImageTest {
 
    public ImageTest() {}
 
    public static void main(String[] args) {
        try {
            ImageTest test = new ImageTest();
            test.ImageTset1();
        } catch (Exception e) {
            System.out.print(e);
        }
    }
 
    /**
     * 合成支付宝和二维码的图片
     * @throws Exception
     */
    public void ImageTset1() throws Exception {
        //创建四个文件对象（注：这里四张图片的宽度都是相同的，因此下文定义BufferedImage宽度就取第一只的宽度就行了）
        File _file1 = new File("C:/Users/bee/Desktop/test/qrcode.png");
        File _file2 = new File("C:/Users/bee/Desktop/test/qrcode_b.png");
        //File _file3 = new File("C:/Users/bee/Desktop/test/3.jpg");
        //File _file4 = new File("C:/Users/bee/Desktop/test/4.jpg");
 
        Image src1 = javax.imageio.ImageIO.read(_file1);
        Image src2 = javax.imageio.ImageIO.read(_file2);
        //Image src3 = javax.imageio.ImageIO.read(_file3);
        //Image src4 = javax.imageio.ImageIO.read(_file4);
        
        //获取图片的宽度
        int width1 = src1.getWidth(null);
        int width2 = src2.getWidth(null);
        //获取各个图像的高度
        int height1 = src1.getHeight(null);
        int height2 = src2.getHeight(null);
        //int height3 = src3.getHeight(null);
        //int height4 = src4.getHeight(null);
        
        //构造一个类型为预定义图像类型之一的 BufferedImage。 宽度为第一只的宽度，高度为各个图片高度之和
        BufferedImage tag = new BufferedImage(width2, height2 , BufferedImage.TYPE_INT_RGB);
        //创建输出流
        FileOutputStream out = new FileOutputStream("C:/Users/bee/Desktop/test/QRMap.jpg");
        //绘制合成图像
        Graphics g = tag.createGraphics();
        
        g.drawImage(src2, 0, 0, width2 , height2, null);
        g.drawImage(src1, 400, 300, width1, height1, null);
        //g.drawImage(src3, 0, height1 + height2, width, height3, null);
        //g.drawImage(src4, 0, height1 + height2 + height3, width, height4, null);
        // 释放此图形的上下文以及它使用的所有系统资源。
        g.dispose();
        //将绘制的图像生成至输出流
        JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);
        encoder.encode(tag);
        //关闭输出流
        out.close();
        System.out.println("藏宝图出来了");
    }
    
    public void ImageTset() throws Exception {
        //创建四个文件对象（注：这里四张图片的宽度都是相同的，因此下文定义BufferedImage宽度就取第一只的宽度就行了）
        File _file1 = new File("C:/Users/bee/Desktop/test/1.jpg");
        File _file2 = new File("C:/Users/bee/Desktop/test/2.jpg");
        File _file3 = new File("C:/Users/bee/Desktop/test/3.jpg");
        File _file4 = new File("C:/Users/bee/Desktop/test/4.jpg");
 
        Image src1 = javax.imageio.ImageIO.read(_file1);
        Image src2 = javax.imageio.ImageIO.read(_file2);
        Image src3 = javax.imageio.ImageIO.read(_file3);
        Image src4 = javax.imageio.ImageIO.read(_file4);
        
        //获取图片的宽度
        int width = src1.getWidth(null);
        //获取各个图像的高度
        int height1 = src1.getHeight(null);
        int height2 = src2.getHeight(null);
        int height3 = src3.getHeight(null);
        int height4 = src4.getHeight(null);
        
        //构造一个类型为预定义图像类型之一的 BufferedImage。 宽度为第一只的宽度，高度为各个图片高度之和
        BufferedImage tag = new BufferedImage(width, height1 + height2 + height3 + height4, BufferedImage.TYPE_INT_RGB);
        //创建输出流
        FileOutputStream out = new FileOutputStream("C:/Users/bee/Desktop/test/treasureMap.jpg");
        //绘制合成图像
        Graphics g = tag.createGraphics();
        g.drawImage(src1, 0, 0, width, height1, null);
        g.drawImage(src2, 0, height1, width , height2, null);
        g.drawImage(src3, 0, height1 + height2, width, height3, null);
        g.drawImage(src4, 0, height1 + height2 + height3, width, height4, null);
        g.drawI
        // 释放此图形的上下文以及它使用的所有系统资源。
        g.dispose();
        //将绘制的图像生成至输出流
        JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);
        encoder.encode(tag);
        //关闭输出流
        out.close();
        System.out.println("藏宝图出来了");
    }
}