zxing实现二维码生成和解析
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转载自http://kesun-shy.iteye.com/blog/2154169
二维码的生成与解析。有多种途径。我选择用大品牌,google老大的zxing。
gitHub链接是(我用的3.0.0,已经是nio了)
https://github.com/zxing/zxing/tree/zxing-3.0.0
- // 其中输出图像和读取图像的类在core包
- MultiFormatReader
- MultiFormatWriter
- // 生成矩阵的类在javase的包里
- MatrixToImageWriter
// 其中输出图像和读取图像的类在core包MultiFormatReaderMultiFormatWriter// 生成矩阵的类在javase的包里MatrixToImageWriter
pom.xml中的配置为
- <project xmlns=“http://maven.apache.org/POM/4.0.0” xmlns:xsi=“http://www.w3.org/2001/XMLSchema-instance”
- xsi:schemaLocation=“http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd”>
- <modelVersion>4.0.0</modelVersion>
- <groupId>com.shihy</groupId>
- <artifactId>qrcode</artifactId>
- <version>0.0.1-SNAPSHOT</version>
- <packaging>jar</packaging>
- <name>qrcode</name>
- <url>http://maven.apache.org</url>
- <properties>
- <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
- </properties>
- <dependencies>
- <dependency>
- <groupId>com.google.zxing</groupId>
- <artifactId>core</artifactId>
- <version>3.0.0</version>
- </dependency>
- <dependency>
- <groupId>com.google.zxing</groupId>
- <artifactId>javase</artifactId>
- <version>3.0.0</version>
- </dependency>
- <dependency>
- <groupId>junit</groupId>
- <artifactId>junit</artifactId>
- <version>4.10</version>
- </dependency>
- <dependency>
- <groupId>com.alibaba</groupId>
- <artifactId>fastjson</artifactId>
- <version>1.1.29</version>
- </dependency>
- </dependencies>
- </project>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>com.shihy</groupId> <artifactId>qrcode</artifactId> <version>0.0.1-SNAPSHOT</version> <packaging>jar</packaging> <name>qrcode</name> <url>http://maven.apache.org</url> <properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> </properties> <dependencies> <dependency> <groupId>com.google.zxing</groupId> <artifactId>core</artifactId> <version>3.0.0</version> </dependency> <dependency> <groupId>com.google.zxing</groupId> <artifactId>javase</artifactId> <version>3.0.0</version> </dependency> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>4.10</version> </dependency> <dependency> <groupId>com.alibaba</groupId> <artifactId>fastjson</artifactId> <version>1.1.29</version> </dependency> </dependencies></project>
生成图像与解析图像的测试工具类:
- package com.polysaas.edu.qrcode;
- import java.awt.image.BufferedImage;
- import java.io.File;
- import java.io.IOException;
- import java.nio.file.FileSystems;
- import java.nio.file.Path;
- import java.util.HashMap;
- import java.util.Map;
- import javax.imageio.ImageIO;
- import org.junit.Test;
- import com.alibaba.fastjson.JSONObject;
- import com.google.zxing.BarcodeFormat;
- import com.google.zxing.Binarizer;
- import com.google.zxing.BinaryBitmap;
- import com.google.zxing.DecodeHintType;
- import com.google.zxing.EncodeHintType;
- import com.google.zxing.LuminanceSource;
- import com.google.zxing.MultiFormatReader;
- import com.google.zxing.MultiFormatWriter;
- import com.google.zxing.NotFoundException;
- import com.google.zxing.Result;
- import com.google.zxing.WriterException;
- import com.google.zxing.client.j2se.BufferedImageLuminanceSource;
- import com.google.zxing.client.j2se.MatrixToImageWriter;
- import com.google.zxing.common.BitMatrix;
- import com.google.zxing.common.HybridBinarizer;
- public class QRCodeTest {
- /**
- * 生成图像
- *
- * @throws WriterException
- * @throws IOException
- */
- @Test
- public void testEncode() throws WriterException, IOException {
- String filePath = ”D://”;
- String fileName = ”zxing.png”;
- JSONObject json = new JSONObject();
- json.put(
- ”zxing”,
- ”https://github.com/zxing/zxing/tree/zxing-3.0.0/javase/src/main/java/com/google/zxing”);
- json.put(”author”, “shihy”);
- String content = json.toJSONString();// 内容
- int width = 200; // 图像宽度
- int height = 200; // 图像高度
- String format = ”png”;// 图像类型
- Map<EncodeHintType, Object> hints = new HashMap<EncodeHintType, Object>();
- hints.put(EncodeHintType.CHARACTER_SET, ”UTF-8”);
- BitMatrix bitMatrix = new MultiFormatWriter().encode(content,
- BarcodeFormat.QR_CODE, width, height, hints);// 生成矩阵
- Path path = FileSystems.getDefault().getPath(filePath, fileName);
- MatrixToImageWriter.writeToPath(bitMatrix, format, path);// 输出图像
- System.out.println(”输出成功.”);
- }
- /**
- * 解析图像
- */
- @Test
- public void testDecode() {
- String filePath = ”D://zxing.png”;
- BufferedImage image;
- try {
- image = ImageIO.read(new File(filePath));
- LuminanceSource source = new BufferedImageLuminanceSource(image);
- Binarizer binarizer = new HybridBinarizer(source);
- BinaryBitmap binaryBitmap = new BinaryBitmap(binarizer);
- Map<DecodeHintType, Object> hints = new HashMap<DecodeHintType, Object>();
- hints.put(DecodeHintType.CHARACTER_SET, ”UTF-8”);
- Result result = new MultiFormatReader().decode(binaryBitmap, hints);// 对图像进行解码
- JSONObject content = JSONObject.parseObject(result.getText());
- System.out.println(”图片中内容: ”);
- System.out.println(”author: ” + content.getString(“author”));
- System.out.println(”zxing: ” + content.getString(“zxing”));
- System.out.println(”图片中格式: ”);
- System.out.println(”encode: ” + result.getBarcodeFormat());
- } catch (IOException e) {
- e.printStackTrace();
- } catch (NotFoundException e) {
- e.printStackTrace();
- }
- }
- }
package com.polysaas.edu.qrcode;import java.awt.image.BufferedImage;import java.io.File;import java.io.IOException;import java.nio.file.FileSystems;import java.nio.file.Path;import java.util.HashMap;import java.util.Map;import javax.imageio.ImageIO;import org.junit.Test;import com.alibaba.fastjson.JSONObject;import com.google.zxing.BarcodeFormat;import com.google.zxing.Binarizer;import com.google.zxing.BinaryBitmap;import com.google.zxing.DecodeHintType;import com.google.zxing.EncodeHintType;import com.google.zxing.LuminanceSource;import com.google.zxing.MultiFormatReader;import com.google.zxing.MultiFormatWriter;import com.google.zxing.NotFoundException;import com.google.zxing.Result;import com.google.zxing.WriterException;import com.google.zxing.client.j2se.BufferedImageLuminanceSource;import com.google.zxing.client.j2se.MatrixToImageWriter;import com.google.zxing.common.BitMatrix;import com.google.zxing.common.HybridBinarizer;public class QRCodeTest { /** * 生成图像 * * @throws WriterException * @throws IOException */ @Test public void testEncode() throws WriterException, IOException { String filePath = "D://"; String fileName = "zxing.png"; JSONObject json = new JSONObject(); json.put( "zxing", "https://github.com/zxing/zxing/tree/zxing-3.0.0/javase/src/main/java/com/google/zxing"); json.put("author", "shihy"); String content = json.toJSONString();// 内容 int width = 200; // 图像宽度 int height = 200; // 图像高度 String format = "png";// 图像类型 Map<EncodeHintType, Object> hints = new HashMap<EncodeHintType, Object>(); hints.put(EncodeHintType.CHARACTER_SET, "UTF-8"); BitMatrix bitMatrix = new MultiFormatWriter().encode(content, BarcodeFormat.QR_CODE, width, height, hints);// 生成矩阵 Path path = FileSystems.getDefault().getPath(filePath, fileName); MatrixToImageWriter.writeToPath(bitMatrix, format, path);// 输出图像 System.out.println("输出成功."); } /** * 解析图像 */ @Test public void testDecode() { String filePath = "D://zxing.png"; BufferedImage image; try { image = ImageIO.read(new File(filePath)); LuminanceSource source = new BufferedImageLuminanceSource(image); Binarizer binarizer = new HybridBinarizer(source); BinaryBitmap binaryBitmap = new BinaryBitmap(binarizer); Map<DecodeHintType, Object> hints = new HashMap<DecodeHintType, Object>(); hints.put(DecodeHintType.CHARACTER_SET, "UTF-8"); Result result = new MultiFormatReader().decode(binaryBitmap, hints);// 对图像进行解码 JSONObject content = JSONObject.parseObject(result.getText()); System.out.println("图片中内容: "); System.out.println("author: " + content.getString("author")); System.out.println("zxing: " + content.getString("zxing")); System.out.println("图片中格式: "); System.out.println("encode: " + result.getBarcodeFormat()); } catch (IOException e) { e.printStackTrace(); } catch (NotFoundException e) { e.printStackTrace(); } }}
测试生成图像为:
解析到的内容为:
- 图片中内容:
- author: shihy
- zxing: https://github.com/zxing/zxing/tree/zxing-3.0.0/javase/src/main/java/com/google/zxing
- 图片中格式:
- encode: QR_CODE
图片中内容: author: shihyzxing: https://github.com/zxing/zxing/tree/zxing-3.0.0/javase/src/main/java/com/google/zxing图片中格式: encode: QR_CODE
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