通过Composer安装qrcode库,可以在终端中运行以下命令: “` composer require endroid/qr-code “` 2. 使用qrcode库生成二维码: 在PHP文件中引入qrcode库,并使用下面的代码来生成一个二维码图片: “` setSize(300); // 设置二维码尺寸 $qrCode->setMargin(10); // 设置边距 $qrCodeImage = $qrCode->write...
复制 +(UIImage*)generateWithDefaultQRCodeData:(NSString*)data imageViewWidth:(CGFloat)imageViewWidth{// 1、创建滤镜对象CIFilter*filter=[CIFilter filterWithName:@"CIQRCodeGenerator"];// 恢复滤镜的默认属性[filter setDefaults];// 2、设置数据NSString*info=data;// 将字符串转换成NSData*infoData=[...
NSData*imageData=[[NSDataalloc]initWithBase64EncodedString:stroptions:NSDataBase64DecodingIgnoreUnknownCharacters]; UIImage*photo=[UIImageimageWithData:imageData]; return 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 生成一张普通的二维码 +(UIImage*)generateWithDefaultQRCodeData:(NSString*)dataima...
A代表a-z,B代表其他字符4x.setQrcodeEncodeMode('B');5//设置纠错等级6x.setQrcodeErrorCorrect('M');7//设置版本号(1-40)8x.setQrcodeVersion(7);910intwidth = 67+12*(7-1);11intheight = 67+12*(7-1);12intpixoff = 2;//偏移量1314BufferedImage bufferedImage =newBuffered...
ByteArrayOutputStream bos = new ByteArrayOutputStream();35 ImageIO.write(bufferedImage, "bmp", bos);//bos可以是⽂件输出流,这⾥写到字节流 36// 加密 37 BASE64Encoder encoder = new BASE64Encoder();38return encoder.encode(bos.toByteArray());39 } ...
funcPhotoToBase64(urlstring)(string,error){imgFile,err:=os.Open(url)// a QR code imageiferr!=nil{return"",err}deferimgFile.Close()fInfo,_:=imgFile.Stat()//返回文件结构size:=fInfo.Size()//获取文件大小buf:=make([]byte,size)//根据大小分配一个byte数组fReader:=bufio.NewReader(imgFile...
data.qrcode_base64.replace(/^data:image\/\w+;base64,/, "") // console.log(imageData) fileManager.writeFile({ filePath: imgPath, data: imageData, encoding: 'base64', success:res=>{ this.setData({ imageUrl: imgPath }) wx.saveImageToPhotosAlbum({ filePath: imgPath, success: res...
publicclassQRCodeUtility{publicstaticStringgenerateQRCode(Stringtext){QRCodeWriterqrCodeWriter=newQRCodeWriter();try{// 生成二维码的位矩阵BitMatrixbitMatrix=qrCodeWriter.encode(text,BarcodeFormat.QR_CODE,200,200);// 将BitMatrix转为BufferedImageBufferedImageimage=MatrixToImageWriter.toBufferedImage(bitMatrix);...
qrCodeEncoder.QRCodeScale=4;//将字符串生成二维码图片Bitmap image =qrCodeEncoder.Encode(str, Encoding.Default);//保存为PNG到内存流MemoryStream ms =newMemoryStream(); image.Save(ms, ImageFormat.Png);stringstrUrl ="data:image/png;base64,"+Convert.ToBase64String(ms.ToArray()); image.Dispose...
<aid="temporary"></a><imgsrc="data:image/png;base64,数据"id="register_qr"/><buttontype="button"onclick="down()">下载</button> png 可以换成其他图片后缀 JavaScript 下载base64图片 // 根据图片生成画布functionconvertImageToCanvas(image){varcanvas=document.createElement("canvas");canvas.width=...