Java generates two-dimensional code

Java generated QR code there are many ways, I now use the Google zxing way

1, join the zxing package, I use the MAVEN build project

<Dependency>    <groupId>Com.google.zxing</groupId>    <Artifactid>Core</Artifactid>    <version>3.2.0</version></Dependency>

2, the use of zxing development also requires a class, the code is as follows

 Public Final classMatrixtoimagewriter {Private Static Final intBLACK = 0xff000000; Private Static Final intWhite = 0xFFFFFFFF; PrivateMatrixtoimagewriter () {} Public Staticbufferedimage tobufferedimage (Bitmatrix matrix) {intwidth =matrix.getwidth (); intHeight =matrix.getheight (); BufferedImage Image=Newbufferedimage (width, height, bufferedimage.type_int_rgb);  for(intx = 0; x < width; X + +) {              for(inty = 0; Y < height; y++) {Image.setrgb (x, Y, Matrix.get (x, y)?black:white); }         }         returnimage; }          Public Static voidWriteToFile (Bitmatrix matrix, String format, file file)throwsIOException {bufferedimage image=tobufferedimage (matrix); if(!imageio.write (image, format, file)) {             Throw NewIOException ("Could not write a image of format" + format + "to" +file); }     }          Public Static voidWriteToStream (Bitmatrix matrix, String format, OutputStream stream)throwsIOException {bufferedimage image=tobufferedimage (matrix); if(!imageio.write (image, format, stream)) {             Throw NewIOException ("Could not write an image of format" +format); }     } }

3. Test class

 Public Static voidMain (string[] args)throwswriterexception, IOException {String text= "120605181003;http://www.baidu.com"; intwidth = 300; intHeight = 300; //picture format of QR codeString format = "gif"; Hashtable hints=NewHashtable (); //the encoding used for the contentHints.put (Encodehinttype.character_set, "Utf-8"); Bitmatrix Bitmatrix=NewMultiformatwriter (). Encode (text, barcodeformat.qr_code, width, height, hints); //generate two-dimensional codeFile OutputFile =NewFile ("D:" +file.separator+ "New.gif");     Matrixtoimagewriter.writetofile (Bitmatrix, format, outputFile); }

Java generates two-dimensional code