how to scan bitcoin qr code

is left blank, EncodingAESKey is OK, and then click OK, will send a get request to this URL, contains many parameters, most of these requests allow us to check whether the access is a server request. I did not verify it. his request is that, if we verify the access, an echostr parameter in the get request is returned as is, here, the return is neither return nor ajaxReturn, but echo. if thinkPHP is used for development, echo I ('echostr') is used directly. Then the interface is verified success

code image height $logo_width=imagex($logo);//logo image width $logo_height=imagey($ Logo);//logo image height $logo_qr_width=$QR_width/ 5; $scale=$logo_width/$logo_qr_width; $logo_qr_height=$logo_height/$scale; $from_width= ($QR_width-$logo_qr_width) / 2; //re Combine images and resize imagecopyresampled($QR,$logo,$from_width,$from_width, 0, 0,$logo_qr_width, $logo_qr_height,$logo_width,$logo_height);}//o

from text using defaultsByteArrayOutputStream stream = QRCode.from("Hello World").stream();// override the image type to be JPGQRCode.from("Hello World").to(ImageType.JPG).file();QRCode.from("Hello World").to(ImageType.JPG).stream();// override image size to be 250x250QRCode.from("Hello World").withSize(250, 250).file();QRCode.from("Hello World").withSize(250, 250).stream();// override size and image typeQRCode.from("Hello World").to(ImageType.GIF).withSize(250, 250).file();QRCode.from("Hello W

(ImageType.JPG).file(); QRCode.from("Hello World").to(ImageType.JPG).stream(); // override image size to be 250x250 QRCode.from("Hello World").withSize(250, 250).file(); QRCode.from("Hello World").withSize(250, 250).stream(); // override size and image type QRCode.from("Hello World").to(ImageType.GIF).withSize(250, 250).file(); QRCode.from("Hello World").to(ImageType.GIF).withSize(250, 250).stream();

. clearRect (0, 0, imgSize, imgSize); 119 120 // sets the image color> BLACK 121 gs. setColor (Color. BLACK); 122 // set the offset. if this parameter is not set, the parsing error may be 123 int pixoff = 2. 124 // output content> QR code 125 if (contentBytes. length> 0 contentBytes. length TwoDimensionCodeImage class: QR c