java生成二维码内部放入中文介绍
2021-06-05 12:02
阅读:655
标签:false getwidth 添加 exists common hand isp ade barcode
//工具类
package test; import java.awt.BasicStroke; import java.awt.Color; import java.awt.Font; import java.awt.FontMetrics; import java.awt.Graphics; import java.awt.Graphics2D; import java.awt.Image; import java.awt.RenderingHints; import java.awt.Shape; import java.awt.geom.RoundRectangle2D; import java.awt.image.BufferedImage; import java.io.ByteArrayOutputStream; import java.io.File; import java.io.FileOutputStream; import java.io.IOException; import java.util.HashMap; import java.util.Hashtable; import java.util.Map; import javax.imageio.ImageIO; import com.google.zxing.BarcodeFormat; import com.google.zxing.BinaryBitmap; import com.google.zxing.EncodeHintType; import com.google.zxing.MultiFormatReader; import com.google.zxing.MultiFormatWriter; import com.google.zxing.Result; import com.google.zxing.client.j2se.BufferedImageLuminanceSource; import com.google.zxing.common.BitMatrix; import com.google.zxing.common.HybridBinarizer; import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel; /* * 语言:java 工具jar:zxing 版本:3.2.1 * 使用前需要导入jar包或者依赖 * 生成和解码QR工具类 * 参考自:https://www.cnblogs.com/mr-wuxiansheng/p/7256507.html */ public class QR { private static final int BLACK = 0xFF000000; private static final int WHITE = 0xFFFFFFFF; // LOGO宽度 private static final int LOGO_WIDTH = 60; // LOGO高度 private static final int LOGO_HEIGHT = 60; //二维码 private static final int QCwidth = 600; private static final int QCheight = 600; //图片格式 private static final String format="png"; /** * * 图片高度增加60 * */ private static final int PIC_HEIGHT=QCheight+60; public static String createQR(String outPath,String content) { Hashtableht = new Hashtable (); ht.put (EncodeHintType.CHARACTER_SET, "UTF-8"); try { BitMatrix bitMatrix = new MultiFormatWriter().encode(content,BarcodeFormat.QR_CODE, QCwidth, QCheight, ht); int b_width = bitMatrix.getWidth (); int b_height = bitMatrix.getHeight (); // 建立图像缓冲器 BufferedImage image = new BufferedImage (b_width, b_height, BufferedImage.TYPE_3BYTE_BGR); for ( int x = 0; x LOGO_WIDTH) { width = LOGO_WIDTH; } if (height > LOGO_HEIGHT) { height = LOGO_HEIGHT; } Image image = src.getScaledInstance(width, height, Image.SCALE_SMOOTH); BufferedImage tag = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB); Graphics g = tag.getGraphics(); g.drawImage(image, 0, 0, null); // 绘制缩小后的图 g.dispose(); src = image; } // 插入LOGO Graphics2D graph = source.createGraphics(); int x = (QCwidth - width) / 2; int y = (QCheight - height) / 2; graph.drawImage(src, x, y, width, height, null); Shape shape = new RoundRectangle2D.Float(x, y, width, height, 6, 6); graph.setStroke(new BasicStroke(3f)); graph.draw(shape); graph.dispose(); } catch (Exception e) { e.printStackTrace(); // TODO: handle exception } } }
//启动控制类
package test; import java.util.Map; public class CreateQR { public static void main(String[] args) { //生成QR String cqr = QR.createQR("E:test.png", "老银铺百年传承承接各种金银首饰加工,地址苏州市吴江区友谊大厦105号,高级金银加工大师:裴忠云 电话:18362712202"); System.out.println("生成状态:" + cqr); //解析QR Map m = QR.analysisQR("E:test.png"); System.out.println("解析状态:" + m.get("STATE")); System.out.println("二维码内容:" + m.get("TEXT")); } }
//pom.xml文件
javax.servlet javax.servlet-api3.1.0 org.springframework spring-webmvc4.0.6.RELEASE com.google.zxing core3.3.0 com.google.zxing javase3.2.1
java生成二维码内部放入中文介绍
标签:false getwidth 添加 exists common hand isp ade barcode
原文地址:https://www.cnblogs.com/xianz666/p/14629034.html
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