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) { Hashtable<EncodeHintType, Object> ht = new Hashtable<EncodeHintType, Object> (); 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 < b_width; x++ ){ for ( int y = 0; y < b_height; y++ ){ image.setRGB (x, y, bitMatrix.get (x, y) ? BLACK : WHITE); } } //插入log //insertImage(image,"D:/logo.png" , false); //二维码下方添加文字 // 生成二维码 ImageIO.write (image, format, new File (outPath)); //二维码的名称 是 erweima.sgif } catch (Exception e) { e.printStackTrace(); return "ERROR"; } return "SUCCESS"; } /* * 解析QR码 * IN:被解析图片路径 * OUT:Map集合: * key:RESULT 》》 总结果集,未被解析 * FORMAT 》》 被解析的二维码格式 * TEXT 》》 二维码中含有的文本内容 * STATE 》》 解析状态,成功或失败 */ public static Map analysisQR(String path) { Map resMap = new HashMap(); //返回出去的map集合 try { MultiFormatReader formatReader = new MultiFormatReader(); File file = new File(path); BufferedImage image = ImageIO.read(file); //读取文件 BinaryBitmap binaryBitmap = new BinaryBitmap(new HybridBinarizer(new BufferedImageLuminanceSource(image))); HashMap hints = new HashMap(); hints.put(EncodeHintType.CHARACTER_SET, "utf-8"); // 字符集 Result result = formatReader.decode(binaryBitmap, hints); resMap.put("RESULT", result); //总结果集 resMap.put("FORMAT", result.getBarcodeFormat()); //被解析的二维码格式 resMap.put("TEXT", result.getText()); //被解析的二维码含有的文本内容 resMap.put("STATE", "SUCCESS"); //解析状态 } catch (Exception e) { e.printStackTrace(); resMap.put("STATE", "ERROR"); } return resMap; } /** * 插入LOGO * @param source 二维码图片 * @param logoPath LOGO图片地址 * @param needCompress 是否压缩 * @throws Exception */ private static void insertImage(BufferedImage source, String logoPath, boolean needCompress) { System.out.println("logoPath============"+logoPath); try { File file = new File(logoPath); if (!file.exists()) { throw new Exception("logo file not found."); } Image src = ImageIO.read(new File(logoPath)); int width = src.getWidth(null); int height = src.getHeight(null); if (needCompress) { // 压缩LOGO if (width > 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
<dependencies> <!-- servlet --> <dependency> <groupId>javax.servlet</groupId> <artifactId>javax.servlet-api</artifactId> <version>3.1.0</version> </dependency> <!-- web --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc</artifactId> <version>4.0.6.RELEASE</version> </dependency> <!-- 二维码--> <!-- https://mvnrepository.com/artifact/com.google.zxing/core --> <dependency> <groupId>com.google.zxing</groupId> <artifactId>core</artifactId> <version>3.3.0</version> </dependency> <dependency> <groupId>com.google.zxing</groupId> <artifactId>javase</artifactId> <version>3.2.1</version> </dependency> </dependencies>
标签:false getwidth 添加 exists common hand isp ade barcode
原文地址:https://www.cnblogs.com/xianz666/p/14629034.html