Java二维码的生成以及解析

日本人写的解码与编码实现Sourceforgejp与

这里把它们merge到一个jar文件里

编码测试

Java代码

import javaawtColor;

import javaawtGraphicsD;

import javaawtimageBufferedImage;

import javaioFile;

import javaximageioImageIO;

import comswetakeutilQrcode;

public class QRCodeEncoderTest {

public static void main(String[] args) throws Exception {

Qrcode qrcode=new Qrcode();

qrcodesetQrcodeErrorCorrect(M);

qrcodesetQrcodeEncodeMode(B);

qrcodesetQrcodeVersion();

String testString = _+^%$#@!~`=&)*(;

byte[] d =testStringgetBytes(GBK);

BufferedImage bi = new BufferedImage( BufferedImageTYPE_INT_RGB);

// createGraphics

GraphicsD g = bicreateGraphics();

// set background

gsetBackground(ColorWHITE);

gclearRect( );

gsetColor(ColorBLACK);

if (dlength> && dlength <){

boolean[][] b = qrcodecalQrcode(d);

for (int i=;i<blength;i++){

for (int j=;j<blength;j++){

if (b[j][i]) {

gfillRect(j*+i*+);

}

}

}

}

gdispose();

biflush();

String FilePath=TestQRCodepng;

File f = new File(FilePath);

ImageIOwrite(bi png f);

Systemoutprintln(doned!);

}

}

import javaawtColor; import javaawtGraphicsD; import javaawtimageBufferedImage; import javaioFile; import javaximageioImageIO; import comswetakeutilQrcode; public class QRCodeEncoderTest { public static void main(String[] args) throws Exception { Qrcode qrcode=new Qrcode(); qrcodesetQrcodeErrorCorrect(M); qrcodesetQrcodeEncodeMode(B); qrcodesetQrcodeVersion(); String testString = _+^%$#@!~`=&)*(; byte[] d =testStringgetBytes(GBK); BufferedImage bi = new BufferedImage( BufferedImageTYPE_INT_RGB); // createGraphics GraphicsD g = bicreateGraphics(); // set background gsetBackground(ColorWHITE); gclearRect( ); gsetColor(ColorBLACK); if (dlength> && dlength <){ boolean[][] b = qrcodecalQrcode(d); for (int i=;i<blength;i++){ for (int j=;j<blength;j++){ if (b[j][i]) { gfillRect(j*+i*+); } } } } gdispose(); biflush(); String FilePath=TestQRCodepng; File f = new File(FilePath); ImageIOwrite(bi png f); Systemoutprintln(doned!); } }

解码测试

Java代码

import javaawtimageBufferedImage;

import javaioFile;

import javaioIOException;

import javaioUnsupportedEncodingException;

import javaximageioImageIO;

import jpsourceforgeqrcodeQRCodeDecoder;

import jpsourceforgeqrcodedataQRCodeImage;

import jpsourceforgeqrcodeexceptionDecodingFailedException;

public class QRCodeDecoderTest {

public QRCodeDecoderTest() {

}

public static void main(String[] args) {

QRCodeDecoder decoder = new QRCodeDecoder();

File imageFile = new File(TestQRCodepng);

BufferedImage image = null;

try {

image = ImageIOread(imageFile);

} catch (IOException e) {

Systemoutprintln(Error: + egetMessage());

}

try {

String decodedData = new String(decoderdecode(new JSEImage(image))GBK);

Systemoutprintln(decodedData);

} catch (DecodingFailedException dfe) {

Systemoutprintln(Error: + dfegetMessage());

} catch (UnsupportedEncodingException e) {

eprintStackTrace();

}

}

}

class JSEImage implements QRCodeImage {

BufferedImage image;

public JSEImage(BufferedImage image) {

thisimage = image;

}

public int getWidth() {

return imagegetWidth();

}

public int getHeight() {

return imagegetHeight();

}

public int getPixel(int x int y) {

return imagegetRGB(x y);

}

}