com.xiongyingqi.qrcode.QRCode Maven / Gradle / Ivy
package com.xiongyingqi.qrcode;
/**
* Created by 瑛琪xiongyingqi.com on 2014/10/17 0017.
*/
import com.google.zxing.*;
import com.google.zxing.client.j2se.BufferedImageLuminanceSource;
import com.google.zxing.common.BitMatrix;
import com.google.zxing.common.HybridBinarizer;
import javax.imageio.ImageIO;
import java.awt.*;
import java.awt.image.BufferedImage;
import java.io.*;
import java.text.SimpleDateFormat;
import java.util.Hashtable;
import java.util.UUID;
public class QRCode {
private static final int BLACK = 0xff000000;
private static final int WHITE = 0xFFFFFFFF;
/**
* 生成QRCode二维码
*/
public File encode(Profile profile) {
try {
File isFile = new File(profile.getPath());
if (!isFile.exists()) {
isFile.mkdirs();
}
SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMddHHmmss");
String fileName = UUID.randomUUID() + "." + profile.getFormat();
// String url = zxing.getPath() + fileName;
File file = new File(profile.getPath(), fileName);
// writeToFile(bitMatrix, profile.getFormat(), file, profile.isLogoFlag(), profile.getLogoPath());
BufferedImage bufferedImage = encodeToBufferedImage(profile);
ImageIO.write(bufferedImage, profile.getFormat(), file);
return file;
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
public OutputStream encodeToOutputStream(Profile profile) throws IOException, WriterException {
OutputStream outputStream = new ByteArrayOutputStream();
BufferedImage bufferedImage = encodeToBufferedImage(profile);
ImageIO.write(bufferedImage, profile.getFormat(), outputStream);
return outputStream;
}
private BufferedImage encodeToBufferedImage(Profile profile) throws WriterException, IOException {
BitMatrix bitMatrix = encodeToBitMatrix(profile);
BufferedImage bufferedImage = getBufferedImage(bitMatrix, profile.isLogoFlag(), profile.getLogoPath());
return bufferedImage;
}
private BitMatrix encodeToBitMatrix(Profile profile) throws WriterException {
Hashtable hints = new Hashtable();
/*设置纠错级别(L 7%~M 15%~Q 25%~H 30%),纠错级别越高存储的信息越少*/
hints.put(EncodeHintType.ERROR_CORRECTION, profile.getErrorCorrectionLevel());
/*设置编码格式*/
hints.put(EncodeHintType.CHARACTER_SET, profile.getCharacterSet());
/*设置边缘空白*/
hints.put(EncodeHintType.MARGIN, profile.getMargin());
BitMatrix bitMatrix = new MultiFormatWriter().encode(profile.getContent(), BarcodeFormat.QR_CODE, profile.getWidth(), profile.getHeight(), hints);
return bitMatrix;
}
public BufferedImage getBufferedImage(BitMatrix bitMatrix, boolean isLogo, String logoPath) throws IOException {
BufferedImage bi = toBufferedImageContents(bitMatrix);
if (isLogo && logoPath != null && !logoPath.isEmpty() && new File(logoPath).exists()) {
int width_4 = bitMatrix.getWidth() / 4;
int width_8 = width_4 / 2;
int height_4 = bitMatrix.getHeight() / 4;
int height_8 = height_4 / 2;
/*返回由指定矩形区域定义的子图像*/
BufferedImage bi2 = bi.getSubimage(width_4 + width_8, height_4 + height_8, width_4, height_4);
/*获取一个绘图工具笔*/
Graphics2D g2 = bi2.createGraphics();
/*读取logo图片信息*/
Image img = ImageIO.read(new File(logoPath));//实例化一个Image对象。
/*当前图片的宽与高*/
int currentImgWidth = img.getWidth(null);
int currentImgHeight = img.getHeight(null);
/*处理图片的宽与高*/
int resultImgWidth = 0;
int resultImgHeight = 0;
if (currentImgWidth != width_4) {
resultImgWidth = width_4;
}
if (currentImgHeight != width_4) {
resultImgHeight = width_4;
}
/*绘制图片*/
g2.drawImage(img, 0, 0, resultImgWidth, resultImgHeight, null);
g2.dispose();
bi.flush();
}
return bi;
}
/**
* 生成二维码图片
*
* @param bitMatrix
* @param format 图片格式
* @param file 生成二维码图片位置
* @param isLogo 是否要加logo图
* @param logoPath logo图片地址
* @throws IOException
*/
// public void writeToFile(BitMatrix bitMatrix, String format, File file, boolean isLogo, String logoPath) throws IOException {
// BufferedImage bi = toBufferedImageContents(bitMatrix);
// if (isLogo && logoPath != null && !logoPath.isEmpty() && new File(logoPath).exists()) {
// int width_4 = bitMatrix.getWidth() / 4;
// int width_8 = width_4 / 2;
// int height_4 = bitMatrix.getHeight() / 4;
// int height_8 = height_4 / 2;
// /*返回由指定矩形区域定义的子图像*/
// BufferedImage bi2 = bi.getSubimage(width_4 + width_8, height_4 + height_8, width_4, height_4);
// /*获取一个绘图工具笔*/
// Graphics2D g2 = bi2.createGraphics();
// /*读取logo图片信息*/
// Image img = ImageIO.read(new File(logoPath));//实例化一个Image对象。
// /*当前图片的宽与高*/
// int currentImgWidth = img.getWidth(null);
// int currentImgHeight = img.getHeight(null);
// /*处理图片的宽与高*/
// int resultImgWidth = 0;
// int resultImgHeight = 0;
// if (currentImgWidth != width_4) {
// resultImgWidth = width_4;
// }
// if (currentImgHeight != width_4) {
// resultImgHeight = width_4;
// }
// /*绘制图片*/
// g2.drawImage(img, 0, 0, resultImgWidth, resultImgHeight, null);
// g2.dispose();
// bi.flush();
// }
// ImageIO.write(bi, format, file);
// }
/**
* 生成二维码内容
*
* @param bitMatrix
* @return
*/
public BufferedImage toBufferedImageContents(BitMatrix bitMatrix) {
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) == true ? BLACK : WHITE);
}
}
return image;
}
public String decode(InputStream inputStream) throws IOException, NotFoundException {
return decode(ImageIO.read(inputStream));
}
public String decode(BufferedImage image) throws NotFoundException {
/*判断是否是图片*/
if (image == null) {
System.out.println("Could not decode image");
}
/*解析二维码用到的辅助类*/
LuminanceSource source = new BufferedImageLuminanceSource(image);
BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
Hashtable hints = new Hashtable();
/*解码设置编码方式为：UTF-8*/
hints.put(DecodeHintType.CHARACTER_SET, "UTF-8");
Result result = new MultiFormatReader().decode(bitmap, hints);
String resultStr = result.getText();
return resultStr;
}
/**
* 解析二维码
*
* @param path 图片的绝对路径
*/
public String decode(String path) throws IOException, NotFoundException {
if (path == null || path.equals("")) {
System.out.println("文件路径不能为空!");
}
File file = new File(path);
BufferedImage image = ImageIO.read(file);
/*判断是否是图片*/
if (image != null) {
return decode(image);
}
return null;
}
}
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