package com.ruoyi.common.utils;
|
|
import com.google.zxing.BarcodeFormat;
|
import com.google.zxing.EncodeHintType;
|
import com.google.zxing.MultiFormatWriter;
|
import com.google.zxing.common.BitMatrix;
|
import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;
|
import org.apache.shiro.io.ResourceUtils;
|
|
import javax.imageio.ImageIO;
|
import java.awt.*;
|
import java.awt.geom.RoundRectangle2D;
|
import java.awt.image.BufferedImage;
|
import java.io.File;
|
import java.io.InputStream;
|
import java.io.OutputStream;
|
import java.util.Hashtable;
|
|
/**
|
* QRCodeUtil 生成二维码工具类
|
*/
|
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 {
|
InputStream input = ResourceUtils.getInputStreamForPath(imgPath);
|
if (input==null) {
|
System.err.println("该文件不存在！");
|
return;
|
}
|
Image src = ImageIO.read(input);
|
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);
|
ImageIO.write(image, FORMAT_NAME, new File(destPath));
|
}
|
|
public static BufferedImage encode(String content, String imgPath, boolean needCompress) throws Exception {
|
BufferedImage image = QRCodeUtil.createImage(content, imgPath, needCompress);
|
return image;
|
}
|
|
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, 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);
|
}
|
}
|
