convert image to qr code

@ Suppresswarnings ("resource" ) Public Void Download () Throws Exception {string filename = "Qrcode.png" ; String content = "Content" ; Bufferedimage Image = Qrcodeutils. encode (content, size ); // Bufferedimage to inputstream Bytearrayoutputstream = New Bytearrayoutputstream (); imageoutputstream imageoutput = ImageIO. createimageoutputstream (bytearrayoutputstream); ImageIO. Write (image, "PNG" ,

publicstaticvoidtoBmp(Stringstr,StringtransactionID){BASE64Decoderdecoder=newDecoder.BASE64Decoder();byte[]bytes1;try{bytes1=decoder.decodeBuffer(str);byte[]datas=ZoomWbmp(bytes1,str.length(),3);ByteArrayInputStreambais=newByteArrayInputStream(datas);BufferedImagebi1=ImageIO.read(bais);Stringpath=AppKeys.UPLOAD_FILE_PATH+File.separator+"tdcode"+File.separator;Filew2=newFile(path+transactionID+".bmp");//可以是jpg,png,gif格式ImageIO.write(bi1,"jpg",w2);}catch(IOExceptione){AppLogger.getInstance().debug

Using the Google API code can be easily embedded: support static Dynamic Web pageCharm Network Collation Code is as follows:Web page embedding automatically generate the current page QR code image codes

follows:public static function png ($text, $outfile =false, $level =qr_eclevel_l, $size =3, $margin =4, $saveandprint =false) { c1/> $enc = Qrencode::factory ($level, $size, $margin); Return $enc->encodepng ($text, $outfile, $saveandprint =false); } Calling PHP QR code is very simple, and the following code generates a

follows:public static function png ($text, $outfile =false, $level =qr_eclevel_l, $size =3, $margin =4, $saveandprint =false) { c1/> $enc = Qrencode::factory ($level, $size, $margin); Return $enc->encodepng ($text, $outfile, $saveandprint =false); } Calling PHP QR code is very simple, and the following code generates a

(max (1, $ enc-> size), $ maxSize ), $ enc-> margin, $ saveandprint);} catch (Exception $ e) {QRtools: log ($ outfile, $ e-> getMessage ();} exit;?> We can find that the php class library phpqrcode first converts the text we need into an array $ tab through an algorithm, and then draws an image, that is, our QR code, through

HP QR code is a php two-dimensional code generation class library, it can easily generate two-dimensional code, the official website provides a download and a number of demo demos, to see the address:http://phpqrcode.sourceforge.net/ After downloading the class library provided by the official website, we only need to

area covered by the logo is identified. Figure 3 area of the QR code covered by the logo We can imagine that if the logo block area is large enough, the QR code will become unrecognizable. Is there a way to "empty" the above area in advance (to specifically place the logo), while other areas are dedicated to placing

HP QR code is a php two-dimensional code generation library, using it can easily generate two-dimensional code, the official website provides a download and several demo demos, see Address: http://phpqrcode.sourceforge.net/.After downloading the class library provided by the official website, we only need to use phpqrc

Personalize your own QR code and your own QR code 1. What is a QR code? 2. How to Create a QR code 3. How to create your own personalized

through an algorithm to convert the text we need to an array of $tab, and then through the image operation to draw a picture, which is our QR code. If you print an array of $tab, you'll find him like this: Array ([0] = 1111111010101001001111111 [1] = 1000001001111001001000001 [2] = 101110101110000110101110 1 [3]

Thinkphp3.2.3 integrate phpqrcode to generate QR code with logo and qrcode QR code logo Thinkphp does not contain libraries related to QR codes. Therefore, we can integrate phpqrcode to generate QR codes. Download phpqrcode : Http

-bri to adjust the brightness of the picture, and the remaining usage and value are the same as-con.Dynamic GIF Two-dimensional codeIf you want to generate a dynamic GIF QR code, the way with the above image of the two-dimensional code generation is no different, just convert