package com.cloud.common.utils;
|
|
import com.google.zxing.*;
|
import com.google.zxing.Result;
|
import com.google.zxing.common.BitMatrix;
|
import com.google.zxing.common.HybridBinarizer;
|
import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;
|
import org.apache.log4j.Logger;
|
|
import javax.imageio.ImageIO;
|
import java.awt.*;
|
import java.awt.geom.AffineTransform;
|
import java.awt.geom.RoundRectangle2D;
|
import java.awt.image.BufferedImage;
|
import java.io.*;
|
import java.util.Hashtable;
|
import java.util.Random;
|
/**
|
* QR工具类
|
* @author lp
|
* @date 2018-08-05
|
*/
|
public class QrCodeUtil {
|
|
|
public static final Logger LOGGER = Logger.getLogger(QrCodeUtil.class);
|
private static final String CHARSET = "utf-8";
|
public 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;
|
|
|
public static byte[] createQRcode(String uuid) {
|
BufferedImage image = null;
|
try {
|
image = QrCodeUtil.createImage(uuid, null, false);
|
} catch (Exception e) {
|
LOGGER.error("生成二维码异常");
|
throw new RuntimeException("生成二维码异常");
|
}
|
return imageToBytes(image, FORMAT_NAME);
|
}
|
|
|
public static String parseQRcode(byte[] photo) {
|
ByteArrayInputStream in = new ByteArrayInputStream(photo);
|
BufferedImage image = null;;
|
try {
|
image = ImageIO.read(in);
|
} catch (IOException e) {
|
LOGGER.error("解析二维码异常");
|
throw new RuntimeException("解析二维码异常");
|
}
|
if (image == null) {
|
return null;
|
}
|
BufferedImageLuminanceSource source = new BufferedImageLuminanceSource(image);
|
BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
|
com.google.zxing.Result result = null;
|
String resultStr = null;
|
Hashtable hints = new Hashtable();
|
hints.put(DecodeHintType.CHARACTER_SET, CHARSET);
|
try {
|
result = new MultiFormatReader().decode(bitmap, hints);
|
resultStr = result.getText();
|
} catch (NotFoundException e) {
|
LOGGER.error("解析二维码异常");
|
throw new RuntimeException("解析二维码异常");
|
}
|
return resultStr;
|
}
|
|
|
|
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();
|
// 绘制缩小后的图
|
g.drawImage(image, 0, 0, null);
|
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 = "http://www.dans88.com.cn";
|
QrCodeUtil.encode(text, "d:/MyWorkDoc/my180.jpg", "d:/MyWorkDoc", true);
|
QrCodeUtil.decode("d:/MyWorkDoc/my180.jpg");
|
System.err.println(parseQRcode(createQRcode(text)));
|
}
|
|
/**
|
* 转换BufferedImage 数据为byte数组
|
*
|
* @param bImage Image对象
|
* @param format image格式字符串.如"gif","png"
|
* @return byte数组
|
*/
|
public static byte[] imageToBytes(BufferedImage bImage, String format) {
|
ByteArrayOutputStream out = new ByteArrayOutputStream();
|
try {
|
ImageIO.write(bImage, format, out);
|
} catch (IOException e) {
|
e.printStackTrace();
|
}
|
return out.toByteArray();
|
}
|
|
/**
|
* 转换byte数组为Image
|
*
|
* @param bytes
|
* @return Image
|
*/
|
public static Image bytesToImage(byte[] bytes) {
|
Image image = Toolkit.getDefaultToolkit().createImage(bytes);
|
try {
|
MediaTracker mt = new MediaTracker(new Label());
|
mt.addImage(image, 0);
|
mt.waitForAll();
|
} catch (InterruptedException e) {
|
e.printStackTrace();
|
}
|
|
return image;
|
}
|
|
|
|
}
|
|
|
|
// -------------------------------华丽的分割线----------------------------------
|
|
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) {
|
// = white
|
image.setRGB(x, y, 0xFFFFFFFF);
|
}
|
}
|
}
|
|
this.image = new BufferedImage(sourceWidth, sourceHeight, BufferedImage.TYPE_BYTE_GRAY);
|
this.image.getGraphics().drawImage(image, 0, 0, null);
|
this.left = left;
|
this.top = top;
|
}
|
|
@Override
|
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;
|
}
|
|
@Override
|
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;
|
}
|
|
@Override
|
public boolean isCropSupported() {
|
return true;
|
}
|
|
@Override
|
public LuminanceSource crop(int left, int top, int width, int height) {
|
return new BufferedImageLuminanceSource(image, this.left + left, this.top + top, width, height);
|
}
|
|
@Override
|
public boolean isRotateSupported() {
|
return true;
|
}
|
|
@Override
|
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);
|
}
|
}
|
