ssm生成二维码

1.在pom文件中添加路径

<!-- 二维码 -->
        <dependency>
            <groupId>com.google.zxing</groupId>
            <artifactId>core</artifactId>
            <version>3.3.0</version>
        </dependency>
        <dependency>
            <groupId>com.google.zxing</groupId>
            <artifactId>javase</artifactId>
            <version>3.3.0</version>
        </dependency>

2.BufferedImageLuminanceSource

package com.att.Util;import com.google.zxing.LuminanceSource;import java.awt.Graphics2D;import java.awt.geom.AffineTransform;import java.awt.image.BufferedImage;import com.google.zxing.LuminanceSource;    public class BufferedImageLuminanceSource extends LuminanceSource {        private final BufferedImage image;        private final int left;        private final int top;        public BufferedImageLuminanceSource(BufferedImage image) {            this(image, 0, 0, image.getWidth(), image.getHeight());        }        public BufferedImageLuminanceSource(BufferedImage image, int left,                                            int top, int width, int height) {            super(width, height);            int sourceWidth = image.getWidth();            int sourceHeight = image.getHeight();            if (left + width > sourceWidth || top + height > sourceHeight) {                throw new IllegalArgumentException(                        "Crop rectangle does not fit within image data.");            }            for (int y = top; y < top + height; y++) {                for (int x = left; x < left + width; x++) {                    if ((image.getRGB(x, y) & 0xFF000000) == 0) {                        image.setRGB(x, y, 0xFFFFFFFF); // = white                    }                }            }            this.image = new BufferedImage(sourceWidth, sourceHeight,                    BufferedImage.TYPE_BYTE_GRAY);            this.image.getGraphics().drawImage(image, 0, 0, null);            this.left = left;            this.top = top;        }        public byte[] getRow(int y, byte[] row) {            if (y < 0 || y >= getHeight()) {                throw new IllegalArgumentException(                        "Requested row is outside the image: " + y);            }            int width = getWidth();            if (row == null || row.length < width) {                row = new byte[width];            }            image.getRaster().getDataElements(left, top + y, width, 1, row);            return row;        }        public byte[] getMatrix() {            int width = getWidth();            int height = getHeight();            int area = width * height;            byte[] matrix = new byte[area];            image.getRaster().getDataElements(left, top, width, height, matrix);            return matrix;        }        public boolean isCropSupported() {            return true;        }        public LuminanceSource crop(int left, int top, int width, int height) {            return new BufferedImageLuminanceSource(image, this.left + left,                    this.top + top, width, height);        }        public boolean isRotateSupported() {            return true;        }        public LuminanceSource rotateCounterClockwise() {            int sourceWidth = image.getWidth();            int sourceHeight = image.getHeight();            AffineTransform transform = new AffineTransform(0.0, -1.0, 1.0,                    0.0, 0.0, sourceWidth);            BufferedImage rotatedImage = new BufferedImage(sourceHeight,                    sourceWidth, BufferedImage.TYPE_BYTE_GRAY);            Graphics2D g = rotatedImage.createGraphics();            g.drawImage(image, transform, null);            g.dispose();            int width = getWidth();            return new BufferedImageLuminanceSource(rotatedImage, top,                    sourceWidth - (left + width), getHeight(), width);        }}
                                                 3.ORCodeUtil工具类
package com.bw.Util;import java.awt.BasicStroke;import java.awt.Graphics;import java.awt.Graphics2D;import java.awt.Image;import java.awt.Shape;import java.awt.geom.RoundRectangle2D;import java.awt.image.BufferedImage;import java.io.File;import java.io.OutputStream;import java.util.Hashtable;import java.util.Random;import javax.imageio.ImageIO;import com.google.zxing.BarcodeFormat;import com.google.zxing.BinaryBitmap;import com.google.zxing.DecodeHintType;import com.google.zxing.EncodeHintType;import com.google.zxing.MultiFormatReader;import com.google.zxing.MultiFormatWriter;import com.google.zxing.Result;import com.google.zxing.common.BitMatrix;import com.google.zxing.common.HybridBinarizer;import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;public class QRCodeUtil {    private static final String CHARSET = "utf-8";    private static final String FORMAT_NAME = "JPG";    // 二维码尺寸    private static final int QRCODE_SIZE = 300;    // LOGO宽度    private static final int WIDTH = 60;    // LOGO高度    private static final int HEIGHT = 60;    private static BufferedImage createImage(String content, String imgPath,                                             boolean needCompress) throws Exception {        Hashtable hints = new Hashtable();        hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);        hints.put(EncodeHintType.CHARACTER_SET, CHARSET);        hints.put(EncodeHintType.MARGIN, 1);        BitMatrix bitMatrix = new MultiFormatWriter().encode(content,                BarcodeFormat.QR_CODE, QRCODE_SIZE, QRCODE_SIZE, hints);        int width = bitMatrix.getWidth();        int height = bitMatrix.getHeight();        BufferedImage image = new BufferedImage(width, height,                BufferedImage.TYPE_INT_RGB);        for (int x = 0; x < width; x++) {            for (int y = 0; y < height; y++) {                image.setRGB(x, y, bitMatrix.get(x, y) ? 0xFF000000                        : 0xFFFFFFFF);            }        }        if (imgPath == null || "".equals(imgPath)) {            return image;        }        // 插入图片        QRCodeUtil.insertImage(image, imgPath, needCompress);        return image;    }    private static void insertImage(BufferedImage source, String imgPath,                                    boolean needCompress) throws Exception {        File file = new File(imgPath);        if (!file.exists()) {            System.err.println(""+imgPath+"   该文件不存在！");            return;        }        Image src = ImageIO.read(new File(imgPath));        int width = src.getWidth(null);        int height = src.getHeight(null);        if (needCompress) { // 压缩LOGO            if (width > WIDTH) {                width = WIDTH;            }            if (height > HEIGHT) {                height = HEIGHT;            }            Image image = src.getScaledInstance(width, height,                    Image.SCALE_SMOOTH);            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();            src = image;        }        // 插入LOGO        Graphics2D graph = source.createGraphics();        int x = (QRCODE_SIZE - width) / 2;        int y = (QRCODE_SIZE - height) / 2;        graph.drawImage(src, x, y, width, height, null);        Shape shape = new RoundRectangle2D.Float(x, y, width, width, 6, 6);        graph.setStroke(new BasicStroke(3f));        graph.draw(shape);        graph.dispose();    }    public static void encode(String content, String imgPath, String destPath,                              boolean needCompress) throws Exception {        BufferedImage image = QRCodeUtil.createImage(content, imgPath,                needCompress);        mkdirs(destPath);        String file = new Random().nextInt(99999999)+".jpg";        ImageIO.write(image, FORMAT_NAME, new File(destPath+"/"+file));    }    public static void mkdirs(String destPath) {        File file =new File(destPath);        //当文件夹不存在时，mkdirs会自动创建多层目录，区别于mkdir．(mkdir如果父目录不存在则会抛出异常)        if (!file.exists() && !file.isDirectory()) {            file.mkdirs();        }    }    public static void encode(String content, String imgPath, String destPath)            throws Exception {        QRCodeUtil.encode(content, imgPath, destPath, false);    }    public static void encode(String content, String destPath,                              boolean needCompress) throws Exception {        QRCodeUtil.encode(content, null, destPath, needCompress);    }    public static void encode(String content, String destPath) throws Exception {        QRCodeUtil.encode(content, null, destPath, false);    }    public static void encode(String content, String imgPath,                              OutputStream output, boolean needCompress) throws Exception {        BufferedImage image = QRCodeUtil.createImage(content, imgPath,                needCompress);        ImageIO.write(image, FORMAT_NAME, output);    }    public static void encode(String content, OutputStream output)            throws Exception {        QRCodeUtil.encode(content, null, output, false);    }    public static String decode(File file) throws Exception {        BufferedImage image;        image = ImageIO.read(file);        if (image == null) {            return null;        }        BufferedImageLuminanceSource source = new BufferedImageLuminanceSource(image);        BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));        Result result;        Hashtable hints = new Hashtable();        hints.put(DecodeHintType.CHARACTER_SET, CHARSET);        result = new MultiFormatReader().decode(bitmap, hints);        String resultStr = result.getText();        return resultStr;    }    public static String decode(String path) throws Exception {        return QRCodeUtil.decode(new File(path));    }    public static void main(String[] args) throws Exception {        String text = "嘿，朋友你好!";//二维码输出的文本内容        QRCodeUtil.encode(text, "d:/MyWorkDoc/my1.jpg", "d:/MyWorkDoc", true);//二维码的生成路径    }}