//Java try{ String file=request.getParameter("image_data"); String filename=rt.getId()+"_"+rt.getName()+".png"; BufferedImage image = null; byte[] imageByte; BASE64Decoder decoder = new BASE64Decoder(); imageByte = decoder.decodeBuffer(file); ByteArrayInputStream bis = new ByteArray...
@SuppressWarnings("unchecked") private int putCharts(XSSFWorkbook wb, XSSFSheet sh, Context context, int row) throws Exception { String barBase64Content = SimpleUtils.getPNGBase64Content( (String)context.get("barChartsData") ); BufferedImage barImage = SimpleUtils.decodeToImage( barBase...
The article shows how to create an HTML5 barcode app with desktop and mobile cameras, which transfer preview images to barcode reader server via WebSocket.
BufferedImageimportjava.io.Fileimportjavax.imageio.ImageIO//extension function to write a BufferedImage to a filefunBufferedImage.toFile(file:File) {ImageIO.write(this,"png", file) }valqrCodeApi=createQrCodeApi() qrCodeApi.createQrImage(QrCodeConfig("https://simonscholz.dev/",DEFAULT_IMG_...
1.生成工具类; import java.awt.Color; import java.awt.Font; import java.awt.Graphics; import java.awt.image.BufferedImage; import java.io.FileOutputStream; import java.util.Random; import javax.imageio.ImageIO; /** * 登陆图形验证码生成工具类 * @author JiangYu */ public ...
ImageOutputStream ios = ImageIO.createImageOutputStream(file); iw.setOutput(ios); BufferedImage bimg =newBufferedImage(100,100, BufferedImage.TYPE_INT_RGB); Graphics g = bimg.getGraphics(); g.setColor(Color.green); g.fillRect(0,0,100,100); ...
Source File: BaseImageIoTest.java From java-image-processing-survival-guide with Apache License 2.0 5 votes @Override public void writeBufferedImage(BufferedImage bufferedImage, float quality, int dpi, String formatName, File targetFile) throws Exception { System.out.println("Saving " + target...