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package org.example.tools; | ||
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import com.google.zxing.BarcodeFormat; | ||
import com.google.zxing.EncodeHintType; | ||
import com.google.zxing.MultiFormatWriter; | ||
import com.google.zxing.WriterException; | ||
import com.google.zxing.common.BitMatrix; | ||
import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel; | ||
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import java.util.Hashtable; | ||
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public class QRPrinter { | ||
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public static String getQr(String text) { | ||
String s = "Cant generate QR"; | ||
int width = 40; | ||
int height = 40; | ||
Hashtable<EncodeHintType, Object> qrParam = new Hashtable<EncodeHintType, Object>(); | ||
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qrParam.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.L); | ||
qrParam.put(EncodeHintType.CHARACTER_SET, "utf-8"); | ||
BitMatrix bitMatrix = null; | ||
try { | ||
bitMatrix = new MultiFormatWriter().encode(text, BarcodeFormat.QR_CODE, width, height, qrParam); | ||
} catch (WriterException e) { | ||
e.printStackTrace(); | ||
} | ||
s = toAscii(bitMatrix); | ||
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return s; | ||
} | ||
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public static String toAscii(BitMatrix bitMatrix) { | ||
StringBuilder sb = new StringBuilder(); | ||
for (int rows = 0; rows < bitMatrix.getHeight(); rows++) { | ||
for (int cols = 0; cols < bitMatrix.getWidth(); cols++) { | ||
boolean x = bitMatrix.get(rows, cols); | ||
if (!x) { | ||
// white | ||
sb.append("\033[47m \033[0m"); | ||
} else { | ||
sb.append("\033[40m \033[0m"); | ||
} | ||
} | ||
sb.append("\n"); | ||
} | ||
return sb.toString(); | ||
} | ||
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public static void main(String[] args) throws Exception { | ||
String text = "https://github.com/zhangshanhai/java-qrcode-terminal "; | ||
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System.out.println(getQr(text)); | ||
} | ||
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} |
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