package org.yeshi.utils;
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import java.awt.BasicStroke;
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import java.awt.Graphics;
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import java.awt.Graphics2D;
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import java.awt.Image;
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import java.awt.Shape;
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import java.awt.geom.RoundRectangle2D;
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import java.awt.image.BufferedImage;
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import java.io.ByteArrayInputStream;
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import java.io.ByteArrayOutputStream;
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import java.io.File;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.OutputStream;
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import java.util.Hashtable;
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import javax.imageio.ImageIO;
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import com.google.zxing.BarcodeFormat;
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import com.google.zxing.BinaryBitmap;
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import com.google.zxing.DecodeHintType;
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import com.google.zxing.EncodeHintType;
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import com.google.zxing.MultiFormatReader;
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import com.google.zxing.MultiFormatWriter;
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import com.google.zxing.Result;
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import com.google.zxing.WriterException;
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import com.google.zxing.client.j2se.BufferedImageLuminanceSource;
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import com.google.zxing.client.j2se.MatrixToImageWriter;
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import com.google.zxing.common.BitMatrix;
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import com.google.zxing.common.HybridBinarizer;
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import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;
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/**
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* 二维码生成
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*
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* @author Administrator
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*/
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public class QRCodeUtil {
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private static final String CHARSET = "UTF-8";
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private static final String FORMAT_NAME = "JPG";
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// 二维码尺寸
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int QRCODE_SIZE = 200;
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// LOGO宽度
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int WIDTH = 60;
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// LOGO高度
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int HEIGHT = 60;
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static QRCodeUtil qrCodeUtil;
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public static QRCodeUtil getInstance(int size) {
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if (qrCodeUtil == null) {
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qrCodeUtil = new QRCodeUtil();
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}
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qrCodeUtil.QRCODE_SIZE = size;
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return qrCodeUtil;
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}
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public static QRCodeUtil getInstance(int size, int imgSize) {
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if (qrCodeUtil == null) {
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qrCodeUtil = new QRCodeUtil();
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}
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qrCodeUtil.QRCODE_SIZE = size;
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qrCodeUtil.HEIGHT = imgSize;
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qrCodeUtil.WIDTH = imgSize;
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return qrCodeUtil;
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}
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/**
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* user: Rex date: 2016年12月29日 上午12:31:29
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*
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* @param content 二维码内容
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* @param logoImgPath Logo
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* @param needCompress 是否压缩Logo
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* @return 返回二维码图片
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* @throws WriterException
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* @throws IOException
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*/
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private BufferedImage createImage(String content, InputStream logoImg, boolean needCompress)
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throws WriterException, IOException {
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return this.createImage(content, logoImg, 0xFF000000, 0xFFFFFFFF, needCompress);
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}
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public BufferedImage createImage(String content, InputStream logoImg, int color, int bgColor, boolean needCompress)
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throws WriterException, IOException {
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Hashtable<EncodeHintType, Object> hints = new Hashtable<EncodeHintType, Object>();
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hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);
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hints.put(EncodeHintType.CHARACTER_SET, CHARSET);
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hints.put(EncodeHintType.MARGIN, 1);
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BitMatrix bitMatrix = new MultiFormatWriter().encode(content, BarcodeFormat.QR_CODE, QRCODE_SIZE, QRCODE_SIZE,
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hints);
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int width = bitMatrix.getWidth();
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int height = bitMatrix.getHeight();
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BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
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for (int x = 0; x < width; x++) {
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for (int y = 0; y < height; y++) {
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image.setRGB(x, y, bitMatrix.get(x, y) ? color : bgColor);
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}
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}
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if (logoImg == null) {
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return image;
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}
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if (logoImg != null) {
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// 插入图片
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insertImage(image, logoImg, needCompress);
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}
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return image;
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}
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/**
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* user: Rex date: 2016年12月29日 上午12:31:29
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*
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* @param content 二维码内容
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* @param logoImgPath Logo
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* @param needCompress 是否压缩Logo
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* @return 返回二维码图片
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* @throws WriterException
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* @throws IOException
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*/
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private BufferedImage createImageDeleteWhite(String content, InputStream logoImg, boolean needCompress)
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throws WriterException, IOException {
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return createImageDeleteWhite(content, logoImg, 0xFF000000, 0xFFFFFFFF, needCompress);
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}
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public BufferedImage createImageDeleteWhite(String content, InputStream logoImg, int color, int bgColor, boolean needCompress)
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throws WriterException, IOException {
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Hashtable<EncodeHintType, Object> hints = new Hashtable<EncodeHintType, Object>();
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hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);
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hints.put(EncodeHintType.CHARACTER_SET, CHARSET);
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hints.put(EncodeHintType.MARGIN, 1);
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BitMatrix bitMatrix = new MultiFormatWriter().encode(content, BarcodeFormat.QR_CODE, QRCODE_SIZE, QRCODE_SIZE,
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hints);
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//调用去除白边方法
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bitMatrix = deleteWhite(bitMatrix);
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int width = bitMatrix.getWidth();
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int height = bitMatrix.getHeight();
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BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
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for (int x = 0; x < width; x++) {
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for (int y = 0; y < height; y++) {
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image.setRGB(x, y, bitMatrix.get(x, y) ? color : bgColor);
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}
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}
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if (logoImg == null) {
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return image;
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}
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// 插入图片
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if (logoImg != null) {
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insertImage(image, logoImg, needCompress);
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}
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return image;
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}
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/**
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* user: Rex date: 2016年12月29日 上午12:30:09
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*
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* @param source 二维码图片
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* @param logoImgPath Logo
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* @param needCompress 是否压缩Logo
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* @throws IOException void TODO 添加Logo
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*/
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private void insertImage(BufferedImage source, InputStream logoImg, boolean needCompress) throws IOException {
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Image src = ImageIO.read(logoImg);
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int width = src.getWidth(null);
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int height = src.getHeight(null);
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if (needCompress) { // 压缩LOGO
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if (width > WIDTH) {
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width = WIDTH;
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}
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if (height > HEIGHT) {
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height = HEIGHT;
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}
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Image image = src.getScaledInstance(width, height, Image.SCALE_SMOOTH);
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BufferedImage tag = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
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Graphics g = tag.getGraphics();
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g.drawImage(image, 0, 0, null); // 绘制缩小后的图
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g.dispose();
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src = image;
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}
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// 插入LOGO
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Graphics2D graph = source.createGraphics();
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int x = (QRCODE_SIZE - width) / 2;
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int y = (QRCODE_SIZE - height) / 2;
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graph.drawImage(src, x, y, width, height, null);
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Shape shape = new RoundRectangle2D.Float(x, y, width, width, 6, 6);
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graph.setStroke(new BasicStroke(3f));
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graph.draw(shape);
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graph.dispose();
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}
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/**
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* user: Rex date: 2016年12月29日 上午12:32:32
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*
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* @param content 二维码内容
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* @param logoImgPath Logo
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* @param destPath 二维码输出路径
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* @param needCompress 是否压缩Logo
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* @throws Exception void TODO 生成带Logo的二维码
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*/
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public void encode(String content, InputStream logoImg, String destPath, boolean needCompress) throws Exception {
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BufferedImage image = createImage(content, logoImg, needCompress);
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ImageIO.write(image, FORMAT_NAME, new File(destPath));
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}
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/**
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* user: Rex date: 2016年12月29日 上午12:35:44
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*
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* @param content 二维码内容
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* @param destPath 二维码输出路径
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* @throws Exception void TODO 生成不带Logo的二维码
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*/
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public void encode(String content, String destPath) throws Exception {
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encode(content, null, destPath, false);
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}
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public InputStream encode(String content) throws Exception {
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ByteArrayOutputStream out = new ByteArrayOutputStream();
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encode(content, null, out, false);
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return new ByteArrayInputStream(out.toByteArray());
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}
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public InputStream encodeDeleteWhite(String content) throws Exception {
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ByteArrayOutputStream out = new ByteArrayOutputStream();
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encodeDeleteWhite(content, null, out, false);
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return new ByteArrayInputStream(out.toByteArray());
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}
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/**
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* user: Rex date: 2016年12月29日 上午12:36:58
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*
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* @param content 二维码内容
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* @param logoImgPath Logo
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* @param output 输出流
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* @param needCompress 是否压缩Logo
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* @throws Exception void TODO 生成带Logo的二维码，并输出到指定的输出流
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*/
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public void encode(String content, InputStream logoImg, OutputStream output, boolean needCompress)
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throws Exception {
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BufferedImage image = createImage(content, logoImg, needCompress);
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ImageIO.write(image, FORMAT_NAME, output);
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}
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/**
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* @param content
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* @param logoImg
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* @param output 二进制输出流
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* @param needCompress
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* @throws Exception
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*/
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public void encode(String content, InputStream logoImg, ByteArrayOutputStream output, boolean needCompress)
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throws Exception {
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BufferedImage image = createImage(content, logoImg, needCompress);
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ImageIO.write(image, FORMAT_NAME, output);
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}
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/**
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* @param content
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* @param logoImg
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* @param output 二进制输出流
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* @param needCompress
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* @throws Exception
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*/
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public void encodeDeleteWhite(String content, InputStream logoImg, ByteArrayOutputStream output, boolean needCompress)
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throws Exception {
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BufferedImage image = createImageDeleteWhite(content, logoImg, needCompress);
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ImageIO.write(image, FORMAT_NAME, output);
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}
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/**
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* user: Rex date: 2016年12月29日 上午12:38:02
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*
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* @param content 二维码内容
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* @param output 输出流
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* @throws Exception void TODO 生成不带Logo的二维码，并输出到指定的输出流
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*/
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public void encode(String content, OutputStream output) throws Exception {
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encode(content, null, output, false);
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}
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/**
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* user: Rex date: 2016年12月29日 上午12:39:10
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*
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* @param file 二维码
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* @return 返回解析得到的二维码内容
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* @throws Exception String TODO 二维码解析
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*/
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public String decode(File file) throws Exception {
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BufferedImage image;
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image = ImageIO.read(file);
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if (image == null) {
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return null;
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}
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BufferedImageLuminanceSource source = new BufferedImageLuminanceSource(image);
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BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
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Result result;
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Hashtable<DecodeHintType, Object> hints = new Hashtable<DecodeHintType, Object>();
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hints.put(DecodeHintType.CHARACTER_SET, CHARSET);
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result = new MultiFormatReader().decode(bitmap, hints);
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String resultStr = result.getText();
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return resultStr;
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}
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/**
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* user: Rex date: 2016年12月29日 上午12:39:48
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*
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* @param path 二维码存储位置
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* @return 返回解析得到的二维码内容
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* @throws Exception String TODO 二维码解析
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*/
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public String decode(String path) throws Exception {
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return decode(new File(path));
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}
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private static BitMatrix deleteWhite(BitMatrix matrix) {
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int[] rec = matrix.getEnclosingRectangle();
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int resWidth = rec[2] + 1;
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int resHeight = rec[3] + 1;
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BitMatrix resMatrix = new BitMatrix(resWidth, resHeight);
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resMatrix.clear();
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for (int i = 0; i < resWidth; i++) {
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for (int j = 0; j < resHeight; j++) {
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if (matrix.get(i + rec[0], j + rec[1]))
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resMatrix.set(i, j);
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}
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}
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return resMatrix;
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}
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}
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