QRCodeUtil 二维码生成 解析 带图片与不带图片的二维码

package com.company.utils;
import java.awt.BasicStroke;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.Shape;
import java.awt.geom.RoundRectangle2D;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.FileInputStream;
import java.io.OutputStream;
import java.util.HashMap;
import java.util.Hashtable;
import java.util.Map;
import java.util.Random;
import javax.imageio.ImageIO;
import com.google.zxing.BarcodeFormat;
import com.google.zxing.Binarizer;
import com.google.zxing.BinaryBitmap;
import com.google.zxing.DecodeHintType;
import com.google.zxing.EncodeHintType;
import com.google.zxing.LuminanceSource;
import com.google.zxing.MultiFormatReader;
import com.google.zxing.MultiFormatWriter;
import com.google.zxing.Result;
import com.google.zxing.WriterException;
import com.google.zxing.common.BitMatrix;
import com.google.zxing.common.HybridBinarizer;
import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;

/**
* 二维码工具类 二维码生成 解析 带图片与不带图片的二维码
* 
*/
public class QrcodeUtils {
// 默认宽为300 
private static Integer WIDTH = 300; 
// 默认高为300 
private static Integer HEIGHT = 300; 
// 二维码尺寸
private static final int QRCODE_SIZE = 300;
// 默认二维码图片格式 
private String IMAGEFORMAT = "png"; 
private static final String IMAGE_FORMAT= "JPG";

// 默认二维码字符编码 
private static String CHARTYPE = "utf-8"; 
// 默认二维码的容错级别 
private ErrorCorrectionLevel corretionLevel = ErrorCorrectionLevel.H; 
// 二维码与图片的边缘 
private static Integer MARGIN = 1; 
// 二维码参数 
private Map<EncodeHintType, Object> encodeHits = new HashMap<EncodeHintType,Object>(); 

public QrcodeUtils(Integer width, Integer height, String imageFormat, String charType, 
ErrorCorrectionLevel corretionLevel, Integer margin) {
if (WIDTH != null) { 
this.WIDTH = WIDTH; 
} 
if (HEIGHT != null) { 
this.HEIGHT = HEIGHT; 
} 
if (IMAGEFORMAT != null) { 
this.IMAGEFORMAT = IMAGEFORMAT; 
} 
if (CHARTYPE != null) { 
this.CHARTYPE = CHARTYPE; 
} 
if (corretionLevel != null) { 
this.corretionLevel = corretionLevel; 
} 
if (MARGIN != null) { 
this.MARGIN = MARGIN; 
} 
} 

public QrcodeUtils(Integer width, Integer height, String imageFormat, String charType, 
ErrorCorrectionLevel corretionLevel) {
this(width, height, imageFormat, charType, corretionLevel, null); 
} 

public QrcodeUtils(Integer width, Integer height, String imageFormat, String charType, Integer margin) { 
this(width, height, imageFormat, charType, null, margin); 
} 

public QrcodeUtils(Integer width, Integer height, String imageFormat, String charType) { 
this(width, height, imageFormat, charType, null, null); 
} 

public QrcodeUtils(Integer width, Integer height, String imageFormat) { 
this(width, height, imageFormat, null, null, null); 
} 

public QrcodeUtils(Integer width, Integer height) { 
this(width, height, null, null, null, null); 
} 

public QrcodeUtils() { 
} 

// 初始化二维码的参数 
private void initialParamers() {
// 字符编码 
encodeHits.put(EncodeHintType.CHARACTER_SET, this.CHARTYPE); 
// 容错等级 L、M、Q、H 其中 L 为最低, H 为最高 
encodeHits.put(EncodeHintType.ERROR_CORRECTION, this.corretionLevel); 
// 二维码与图片边距 
encodeHits.put(EncodeHintType.MARGIN, MARGIN); 
} 

// 得到二维码图片 
// public BufferedImage getBufferedImage(String content) {
// initialParamers(); 
// BufferedImage bufferedImage = null; 
// try { 
// BitMatrix bitMatrix = new MultiFormatWriter().encode(content, BarcodeFormat.QR_CODE, this.width, 
// this.height, this.encodeHits); 
// bufferedImage = MatrixToImageWriter.toBufferedImage(bitMatrix); 
// } catch (WriterException e) { 
// e.printStackTrace(); 
// return null; 
// } 
// return bufferedImage; 
// } 

// 将二维码保存到输出流中 
// public void writeToStream(String content, OutputStream os) {
// initialParamers(); 
// try { 
// BitMatrix matrix = new MultiFormatWriter().encode(content, BarcodeFormat.QR_CODE, this.width, this.height, 
// this.encodeHits); 
// MatrixToImageWriter.writeToStream(matrix, this.imageFormat, os); 
// } catch (Exception e) { 
// e.printStackTrace(); 
// } 
// } 

// 将二维码图片保存为文件 
// public void createQrImage(String content, File file) {
// initialParamers(); 
// try { 
// BitMatrix matrix = new MultiFormatWriter().encode(content, BarcodeFormat.QR_CODE, this.width, this.height,this.encodeHits); 
// MatrixToImageWriter.writeToFile(matrix, this.imageFormat, file); 
// } catch (Exception e) { 
// e.printStackTrace(); 
// } 
// } 

// 将二维码图片保存到指定路径 
public void createQrImage(String content, String path) {
initialParamers(); 
try { 
BitMatrix matrix = new MultiFormatWriter().encode(content, BarcodeFormat.QR_CODE, this.WIDTH, this.HEIGHT,this.encodeHits); 
MatrixToImageWriter.writeToFile(matrix, this.IMAGEFORMAT, new File(path)); 
} catch (Exception e) { 
e.printStackTrace(); 
} 
} 

//识别图片二维码 
public String decodeQrImage(File file){
String content=null; 
try { 
BufferedImage bufferedImage=ImageIO.read(new FileInputStream(file)); 
LuminanceSource source=new BufferedImageLuminanceSource(bufferedImage); 
Binarizer binarizer=new HybridBinarizer(source); 
BinaryBitmap image=new BinaryBitmap(binarizer); 
Map<DecodeHintType,Object> decodeHits=new HashMap<DecodeHintType,Object>(); 
decodeHits.put(DecodeHintType.CHARACTER_SET, this.CHARTYPE); 
Result result=new MultiFormatReader().decode(image, decodeHits); 
content=result.getText(); 
}catch (Exception e) { 
e.printStackTrace(); 
} 
return content; 
} 


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, CHARTYPE);
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
QrcodeUtils.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();
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 = QrcodeUtils.createImage(content, imgPath,
needCompress);
mkdirs(destPath);
String file = new Random().nextInt(99999999) + ".jpg";
ImageIO.write(image, IMAGE_FORMAT, 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 Integer getWidth() { 
return WIDTH; 
} 

public void setWidth(Integer WIDTH) { 
this.WIDTH = WIDTH; 
} 

public Integer getHeight() { 
return HEIGHT; 
} 

public void setHeight(Integer HEIGHT) { 
this.HEIGHT = HEIGHT; 
} 

public String getImageFormat() { 
return IMAGEFORMAT; 
} 

public void setImageFormat(String IMAGEFORMAT) { 
this.IMAGEFORMAT = IMAGEFORMAT; 
} 

public String getCharType() { 
return CHARTYPE; 
} 

public void setCharType(String CHARTYPE) { 
this.CHARTYPE = CHARTYPE; 
} 

public ErrorCorrectionLevel getCorretionLevel() { 
return corretionLevel; 
} 

public void setCorretionLevel(ErrorCorrectionLevel corretionLevel) { 
this.corretionLevel = corretionLevel; 
} 

public Integer getMargin() { 
return MARGIN; 
} 

public void setMargin(Integer MARGIN) { 
this.MARGIN = MARGIN; 
} 

public Map<EncodeHintType, Object> getHits() { 
return encodeHits; 
} 

public void setHits(Map<EncodeHintType, Object> hits) { 
this.encodeHits = hits; 
} 
//main方法测试工具类 
public static void main(String[] args) throws Exception { 
String text = "鲲鹏展翅";
String path2="D:/MyWorkDoc/test.png";
QrcodeUtils qrCode=new QrcodeUtils(300,300); 
//设置二维码的边缘为1 
qrCode.setMargin(MARGIN); 
//输出到桌面 
//String path=System.getProperty("user.home")+File.separator+"Desktop"+File.separator+"test.png"; 
//创建图片二维码 
//qrCode.createQrImage(text, path2);//路径指定到文件名
//QrcodeUtils.encode(text, "d:/MyWorkDoc/kun.jpg", path2, true);//携带LOGO生成二维码 路径指定文件夹
//QrcodeUtils.encode(text,"",path2,true);//不携带LOGO生成二维码 路径指定文件夹
//识别图片二维码的内容 
System.out.println(qrCode.decodeQrImage(new File(path2)));//路径指定到文件名
} 
}

 

package com.company.utils;

import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.io.OutputStream;
import javax.imageio.ImageIO;
import com.google.zxing.common.BitMatrix;

public class MatrixToImageWriter {
private static final int BLACK = 0xFF000000;

private static final int WHITE = 0xFFFFFFFF;

private MatrixToImageWriter() {
}

public static BufferedImage toBufferedImage(BitMatrix matrix) {

int width = matrix.getWidth();

int height = matrix.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, matrix.get(x, y) ? BLACK : WHITE);
}
}
return image;
}

public static void writeToFile(BitMatrix matrix, String format, File file)

throws IOException {
BufferedImage image = toBufferedImage(matrix);
if (!ImageIO.write(image, format, file)) {
throw new IOException("Could not write an image of format "
+ format + " to " + file);
}
}

public static void writeToStream(BitMatrix matrix, String format,
OutputStream stream)
throws IOException {
BufferedImage image = toBufferedImage(matrix);
if (!ImageIO.write(image, format, stream)) {
throw new IOException("Could not write an image of format "
+ format);
}
}

}


 

有重复代码大家自己看一下