import com.google.zxing.*;
import com.google.zxing.client.j2se.BufferedImageLuminanceSource;
import com.google.zxing.common.BitMatrix;
import com.google.zxing.common.HybridBinarizer;
import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;
import javax.imageio.ImageIO;
import java.awt.*;
import java.awt.geom.RoundRectangle2D;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.io.OutputStream;
import java.util.Hashtable;
import java.util.Random;
/**
二维码 和 一维码 工具类
<!-- 二维码生成 -->
<dependency>
<groupId>com.google.zxing</groupId>
<artifactId>core</artifactId>
<version>3.1.0</version>
</dependency>
<dependency>
<groupId>com.google.zxing</groupId>
<artifactId>javase</artifactId>
<version>3.1.0</version>
</dependency>
*/
public class QRCodeUtil {
private static final String CHARSET = "utf-8";
private static final String FORMAT = "JPG";
// 二维码尺寸
private static final int QRCODE_SIZE = 300;
// LOGO宽度
private static final int LOGO_WIDTH = 60;
// LOGO高度
private static final int LOGO_HEIGHT = 60;
// 条形码参数
private static final int BLACK = 0xff000000;
private static final int WHITE = 0xFFFFFFFF;
private static BufferedImage createImage(String content, String logoPath, boolean needCompress) throws Exception {
Hashtable<EncodeHintType, Object> hints = new Hashtable<EncodeHintType, Object>();
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 (logoPath == null || "".equals(logoPath)) {
return image;
}
// 插入图片
QRCodeUtil.insertImage(image, logoPath, needCompress);
return image;
}
/**
* 插入LOGO
* @param source 二维码图片
* @param logoPath LOGO图片地址
* @param needCompress 是否压缩
* @throws Exception
*/
private static void insertImage(BufferedImage source, String logoPath, boolean needCompress) throws Exception {
File file = new File(logoPath);
if (!file.exists()) {
throw new Exception("logo file not found.");
}
Image src = ImageIO.read(new File(logoPath));
int width = src.getWidth(null);
int height = src.getHeight(null);
if (needCompress) { // 压缩LOGO
if (width > LOGO_WIDTH) {
width = LOGO_WIDTH;
}
if (height > LOGO_HEIGHT) {
height = LOGO_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();
}
/**
* 生成二维码(内嵌LOGO)
* 二维码文件名随机，文件名可能会有重复
*
* @param content 内容
* @param logoPath LOGO地址
* @param destPath 存放目录
* @param needCompress 是否压缩LOGO
* @throws Exception
*/
public static String encode(String content, String logoPath, String destPath, boolean needCompress) throws Exception {
BufferedImage image = QRCodeUtil.createImage(content, logoPath, needCompress);
mkdirs(destPath);
String fileName = new Random().nextInt(99999999) + "." + FORMAT.toLowerCase();
ImageIO.write(image, FORMAT, new File(destPath + "/" + fileName));
return fileName;
}
/**
* 生成二维码(内嵌LOGO)
* 调用者指定二维码文件名
*
* @param content 内容
* @param logoPath LOGO地址
* @param destPath 生成的二维码存放目录
* @param fileName 二维码文件名
* @param needCompress 是否压缩LOGO
* @throws Exception
*/
public static String encode(String content, String logoPath, String destPath, String fileName, boolean needCompress) throws Exception {
BufferedImage image = QRCodeUtil.createImage(content, logoPath, needCompress);
mkdirs(destPath);
fileName = fileName.substring(0, fileName.indexOf(".")>0 ? fileName.indexOf("."):fileName.length()) + "." + FORMAT.toLowerCase();
ImageIO.write(image, FORMAT, new File(destPath + "/" + fileName));
return fileName;
}
/**
* 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)
* @param destPath 存放目录
*/
public static void mkdirs(String destPath) {
File file = new File(destPath);
if (!file.exists() && !file.isDirectory()) {
file.mkdirs();
}
}
/**
* 生成二维码(内嵌LOGO)
* @param content 内容
* @param logoPath LOGO地址
* @param destPath 存储地址
* @throws Exception
*/
public static String encode(String content, String logoPath, String destPath) throws Exception {
return QRCodeUtil.encode(content, logoPath, destPath, false);
}
/**
* 生成二维码
* @param content 内容
* @param destPath 存储地址
* @param needCompress 是否压缩LOGO
* @throws Exception
*/
public static String encode(String content, String destPath, boolean needCompress) throws Exception {
return QRCodeUtil.encode(content, null, destPath, needCompress);
}
/**
* 生成二维码
* @param content 内容
* @param destPath 存储地址
* @throws Exception
*/
public static String encode(String content, String destPath) throws Exception {
return QRCodeUtil.encode(content, null, destPath, false);
}
/**
* 生成二维码(内嵌LOGO)
* @param content 内容
* @param logoPath LOGO地址
* @param output 输出流
* @param needCompress 是否压缩LOGO
* @throws Exception
*/
public static void encode(String content, String logoPath, OutputStream output, boolean needCompress)
throws Exception {
BufferedImage image = QRCodeUtil.createImage(content, logoPath, needCompress);
ImageIO.write(image, FORMAT, output);
}
/**
* 生成二维码
* @param content 内容
* @param output 输出流
* @throws Exception
*/
public static void encode(String content, OutputStream output) throws Exception {
QRCodeUtil.encode(content, null, output, false);
}
/**
* 解析二维码
* @param file 二维码图片
* @return
* @throws Exception
*/
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<DecodeHintType, Object> hints = new Hashtable<DecodeHintType, Object>();
hints.put(DecodeHintType.CHARACTER_SET, CHARSET);
result = new MultiFormatReader().decode(bitmap, hints);
String resultStr = result.getText();
return resultStr;
}
/**
* 解析二维码
* @param path 二维码图片地址
* @return
* @throws Exception
*/
public static String decode(String path) throws Exception {
return QRCodeUtil.decode(new File(path));
}
/**
* 生成RQ二维码
*
* @param str 内容
* @param height 高度（px）
* @author
*/
public static BufferedImage getRQ(String str, Integer height) {
if (height == null || height < 100) {
height = 200;
}
try {
// 文字编码
Hashtable<EncodeHintType, String> hints = new Hashtable<EncodeHintType, String>();
hints.put(EncodeHintType.CHARACTER_SET, CHARSET);
BitMatrix bitMatrix = new MultiFormatWriter().encode(str,
BarcodeFormat.QR_CODE, height, height, hints);
return toBufferedImage(bitMatrix);
// 输出方式
// 网页
// ImageIO.write(image, "png", response.getOutputStream());
// 文件
// ImageIO.write(image, "png", file);
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
/**
* 生成一维码（128）
*
* @param str 要存储的内容
* @param width 宽度
* @param height 高度
* @return
* @author
*/
public static BufferedImage getBarcode(String str, Integer width,
Integer height) {
if (width == null || width < 200) {
width = 200;
}
if (height == null || height < 50) {
height = 50;
}
try {
// 文字编码
Hashtable<EncodeHintType, String> hints = new Hashtable<EncodeHintType, String>();
hints.put(EncodeHintType.CHARACTER_SET, CHARSET);
BitMatrix bitMatrix = new MultiFormatWriter().encode(str,
BarcodeFormat.CODE_128, width, height, hints);
return toBufferedImage(bitMatrix);
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
/**
* 生成二维码，写到文件中
*
* @param str 存储内容
* @param height 高度
* @param file 写入的文件
* @throws IOException
* @author
*/
public static void getQRWriteFile(String str, Integer height, File file)
throws IOException {
BufferedImage image = getRQ(str, height);
ImageIO.write(image, "png", file);
}
/**
* 生成一维码，写到文件中
*
* @param str 存储的内容
* @param height 高度
* @param fileName 存入的文件名字
* @param filePath 存入地址
* @throws IOException
* @author
*/
public static void getBarcodeWriteFile(String str, Integer width,
Integer height,String filePath ,String fileName) throws IOException {
File file = new File(filePath + "\\" + fileName + ".jpg");
BufferedImage image = getBarcode(str, width, height);
ImageIO.write(image, "png", file);
}
/**
* 转换成图片
*
* @param matrix
* @return
* @author
*/
private static BufferedImage toBufferedImage(BitMatrix matrix) {
int width = matrix.getWidth();
int height = matrix.getHeight();
BufferedImage image = new BufferedImage(width, height,
BufferedImage.TYPE_INT_ARGB);
for (int x = 0; x < width; x++) {
for (int y = 0; y < height; y++) {
image.setRGB(x, y, matrix.get(x, y) ? BLACK : WHITE);
}
}
return image;
}
/**
* 解码(二维、一维均可)
*/
public static String read(File file) {
BufferedImage image;
try {
if (file == null || file.exists() == false) {
throw new Exception(" File not found:" + file.getPath());
}
image = ImageIO.read(file);
LuminanceSource source = new BufferedImageLuminanceSource(image);
BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
Result result;
// 解码设置编码方式为：utf-8，
Hashtable hints = new Hashtable();
hints.put(DecodeHintType.CHARACTER_SET, "utf-8");
result = new MultiFormatReader().decode(bitmap, hints);
return result.getText();
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
// public static void main(String[] args) throws Exception {
//// String text = "http://www.lianyinkeji.cn";
//
// //含Logo，指定二维码图片名
//// QRCodeUtil.encode(text, "E:\\codebase\\zxing\\src\\main\\resources\\logo.png", "E:\\", "qrcode", true);
// String content = "2222baidu一";
// String logoPath = "C:\\Users\\Lenovo\\Desktop\\pay\\111.jpg";
// String destPath = "C:\\Users\\Lenovo\\Desktop\\pay";
// String fileName = "logo";
//// File file = new File("C:\\Users\\Lenovo\\Desktop\\pay\\test.png");
// QRCodeUtil.getBarcodeWriteFile(content,300,100,destPath,"ErWeiMa");
//// QRCodeUtil.encode(content,logoPath,destPath,fileName,true);
// //不含Logo
// //QRCodeUtil.encode(text, null, "e:\\", true);
//
// //含Logo，不指定二维码图片名
// //QRCodeUtil.encode(text, "e:\\csdn.jpg", "e:\\", true);
//
// }
}一维码 和 二维码 生成工具类
发布于 2019-06-26 1.06k 次阅读
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