zxing 二维码、带logo二维码生成
2022-11-21 12:53:45
michael007js
1218
普通二维码生成
import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
public class ZxingEncoderUtil {
/**
* 生成二维码
* @param filePath 文本文件路径(文本需以UTF-8)
* @param imgFormate 指定生成的二维码图片的后缀名
* @param width 指定生成的二维码图片的宽度
* @param height 指定生成的二维码图片的高度
*/
public void createTwoDimensionalCode(String filePath, String imgFormate, int width, int height) {
File file = new File(filePath);
StringBuffer contents = new StringBuffer("");
//读取文本文件内容到 contents
try {
InputStream is = new FileInputStream(file);
InputStreamReader isr = new InputStreamReader(is);
BufferedReader br = new BufferedReader(isr);
try {
String temp = br.readLine();
while(temp != null) {
contents.append(temp+"\r\n");
temp = br.readLine();
}
} catch (IOException e) {
e.printStackTrace();
}
} catch (FileNotFoundException e) {
e.printStackTrace();
}
//得到图片该存放路径
String imgPath = file.getParent();
//得到文件该设置的名字
String imgName = file.getName();
int endIndex = imgName.lastIndexOf(".");
imgName = imgName.substring(0, endIndex);
File imageFile = new File(imgPath, imgName+"."+imgFormate);
Hashtable<EncodeHintType, Object> hints = new Hashtable<EncodeHintType, Object>();
// 指定纠错等级
hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.L);
// 指定编码格式
hints.put(EncodeHintType.CHARACTER_SET, "UTF-8");
try {
BitMatrix bitMatrix = new MultiFormatWriter().encode(contents.toString(),BarcodeFormat.QR_CODE, width, height, hints);
MatrixToImageWriter.writeToPath(bitMatrix, imgFormate, imageFile.toPath());
} catch (Exception e) {
e.printStackTrace();
}
}
/**
* @param args
*/
public static void main(String[] args) {
String filePath = args[0]; //文本文件路径(文本需以UTF-8)
String imgFormate = args[1]; //指定生成的二维码图片的后缀名
int width = Integer.parseInt(args[2]); //指定生成的二维码图片的宽度
int height = Integer.parseInt(args[3]); //指定生成的二维码图片的高度
new ZxingEncoderUtil().createTwoDimensionalCode(filePath, imgFormate, width, height);
}
}
带logo二维码
import com.google.zxing.common.BitMatrix;
import java.io.File;
import java.io.IOException;
public class CreatQRCodeImg {
private static final int BLACK = 0xFF000000;
private static final int WHITE = 0xFFFFFFFF;
/**
* 最终调用该方法生成二维码图片
* @param url 要生成二维码的url
* @param imgPath 二维码生成的绝对路径
* @param logoPath 二维码中间logo绝对地址
* @throws Exception
*/
public static void get2CodeImage(String url,String imgPath,String logoPath) throws Exception{
String format = "png";
Hashtable<EncodeHintType, String> hints = new Hashtable<EncodeHintType, String>();
hints.put(EncodeHintType.CHARACTER_SET, "utf-8");
BitMatrix bitMatrix = new MultiFormatWriter().encode(url, BarcodeFormat.QR_CODE, 300, 300, hints);
File qrcodeFile = new File(imgPath);
CreatQRCodeImg.writeToFile(bitMatrix, format, qrcodeFile, logoPath);
}
/**
*
* @param matrix 二维码矩阵相关
* @param format 二维码图片格式
* @param file 二维码图片文件
* @param logoPath logo路径
* @throws IOException
*/
public static void writeToFile(BitMatrix matrix, String format, File file, String logoPath) throws IOException {
BufferedImage image = toBufferedImage(matrix);
Graphics2D gs = image.createGraphics();
//载入logo
Image img = ImageIO.read(new File(logoPath));
gs.drawImage(img, 125, 125, null);
gs.dispose();
img.flush();
if(!ImageIO.write(image, format, file)){
throw new IOException("Could not write an image of format " + format + " to " + file);
}
}
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 main(String[] args) {
try {
get2CodeImage("www.baidu.com","d:\\test\\logotest\\logocode.jpg","d:\\test\\logotest\\logo.jpg");
} catch (Exception e) {
e.printStackTrace();
}
}
}