자바 url 에 따라 QR 코드 생 성
4516 단어 자바 프로 그래 밍
package com.dc.test;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.io.OutputStream;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;
import javax.imageio.ImageIO;
import javax.swing.filechooser.FileSystemView;
import com.google.zxing.BarcodeFormat;
import com.google.zxing.EncodeHintType;
import com.google.zxing.MultiFormatWriter;
import com.google.zxing.common.BitMatrix;
/* ****************** *********************
* class : QrCodeUtil
* @author : ncc
* create time : 2018-3-29 06:17:11
* @version : 1.0
* description :
* @see :
* ************************************************/
public class QrCodeUtil {
public static void main(String[] args) {
String url = "weixin://wxpay/bizpayurl?pr=rBtNaVe";
String path = FileSystemView.getFileSystemView().getHomeDirectory() + File.separator + "testQrcode";
String fileName = new SimpleDateFormat("yyyyMMddHHmmss").format(new Date()) + ".jpg";
createQrCode(url, path, fileName);
}
/* ********************************************
* method name : createQrCode
* description :
* @return : String
* @param : @param url
* @param : @param path
* @param : @param fileName
* @param : @return
* modified : ncc , 2018-3-29
* @see :
* ********************************************/
public static String createQrCode(String url, String path, String fileName) {
try {
Map hints = new HashMap();
hints.put(EncodeHintType.CHARACTER_SET, "UTF-8");
BitMatrix bitMatrix = new MultiFormatWriter().encode(url, BarcodeFormat.QR_CODE, 500, 500, hints);
File file = new File(path, fileName);
if (file.exists() || ((file.getParentFile().exists() || file.getParentFile().mkdirs()) && file.createNewFile())) {
writeToFile(bitMatrix, "jpg", file);
System.out.println(" :" + file);
}
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
/* ********************************************
* method name : writeToFile
* description :
* @return : void
* @param : @param matrix
* @param : @param format
* @param : @param file
* @param : @throws IOException
* modified : ncc , 2018-3-29
* @see :
* ********************************************/
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);
}
}
/* ********************************************
* method name : writeToStream
* description :
* @return : void
* @param : @param matrix
* @param : @param format
* @param : @param stream
* @param : @throws IOException
* modified : ncc , 2018-3-29
* @see :
* ********************************************/
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);
}
}
private static final int BLACK = 0xFF000000;
private static final int WHITE = 0xFFFFFFFF;
/* ********************************************
* method name : toBufferedImage
* description :
* @return : BufferedImage
* @param : @param matrix
* @param : @return
* modified : ncc , 2018-3-29
* @see :
* ********************************************/
private 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;
}
}
jar 패키지 에 의존 하여 qrcode. rar 참조
도구 클래스 는 QrCodeUtil. rar 참조
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