Java uses QRCode to generate two-dimensional code images or base64 strings

Generate a QR code image or base64 format string by passing in a string

1  Public StaticString Barcode2base64 (String msg)throwsexception{2QRCode x =NewQRCode ();3         //N Represents the number, a represents a-z,b for other characters4X.setqrcodeencodemode (' B ');5         //set error correction level6X.setqrcodeerrorcorrect (' M ');7         //Set version number (1-40)8X.setqrcodeversion (7);9         Ten         intwidth = 67+12* (7-1); One         intHeight = 67+12* (7-1); A         intPixoff = 2;//Offset Amount -          -BufferedImage BufferedImage =Newbufferedimage (width, height, bufferedimage.type_int_rgb); theGraphics2D GS =bufferedimage.creategraphics (); - Gs.setbackground (color.white); - Gs.setcolor (color.black); -Gs.clearrect (0, 0, width, height); +          -         byte[] D = msg.getbytes ("UTF-8");  +         if(d.length>0&&d.length<120){ A             Boolean[] s =X.calqrcode (d); at              for(inti=0;i<s.length;i++){ -                  for(intj=0;j<s.length;j++){ -                     if(S[j][i]) { -Gs.fillrect (J*3+pixoff, I*3+pixoff, 3, 3); -                     } -                 } in             } -         } to         //Encrypt + gs.dispose (); - Bufferedimage.flush (); theBytearrayoutputstream BOS =NewBytearrayoutputstream (); *Imageio.write (BufferedImage, "BMP", BOS);//BOS can be a file output stream, written here to byte stream $         //EncryptPanax NotoginsengBase64encoder encoder =NewBase64encoder (); -         returnEncoder.encode (Bos.tobytearray ()); the}

Java uses QRCode to generate a two-dimensional code picture or base64 string