Java二维码生成与解码工具Zxing使用

Posted 2020-09-26

 
 1 package com.csii.zxing.test;
 2 
 3 import java.awt.image.BufferedImage;
 4 import java.io.File;
 5 import java.io.IOException;
 6 import java.util.HashMap;
 7 import java.util.Hashtable;
 8 import java.util.Map; 
 9 
10 import javax.imageio.ImageIO; 
11 
12 import org.junit.Test;  
13 import com.google.zxing.BarcodeFormat;
14 import com.google.zxing.Binarizer;
15 import com.google.zxing.BinaryBitmap;
16 import com.google.zxing.DecodeHintType;
17 import com.google.zxing.EncodeHintType;
18 import com.google.zxing.LuminanceSource;
19 import com.google.zxing.MultiFormatReader;
20 import com.google.zxing.MultiFormatWriter;
21 import com.google.zxing.NotFoundException;
22 import com.google.zxing.Result;
23 import com.google.zxing.WriterException;
24 import com.google.zxing.client.j2se.BufferedImageLuminanceSource;
25 import com.google.zxing.client.j2se.MatrixToImageWriter;
26 import com.google.zxing.common.BitMatrix;
27 import com.google.zxing.common.HybridBinarizer;
28 
29 public class ZxingTest {
30     @SuppressWarnings("deprecation")
31     @Test
32     public void testEncoder()
33     {
34             //二维码内容
35             String text = "http://blog.csdn.net/rongbo_j";   
36             int width = 200;   //二维码图片宽度
37             int height = 200;   //高度
38             String format = "gif";  //图片格式
39 
40             Hashtable<EncodeHintType, String> hints = new Hashtable<EncodeHintType, String>();  
41             hints.put(EncodeHintType.CHARACTER_SET, "utf-8");
42             BitMatrix bitMatrix = null;
43             try {
44                 //编码
45                 bitMatrix = new MultiFormatWriter().encode(text, BarcodeFormat.QR_CODE, width, height, hints);
46             } catch (WriterException e1) { 
47                 e1.printStackTrace();
48             }    
49             File outputFile = new File("src/1.gif");  
50             try {
51                 //输出二维码图片
52                 MatrixToImageWriter.writeToFile(bitMatrix, format, outputFile);
53             } catch (IOException e) { 
54                 e.printStackTrace();
55             }
56 
57     }
58     @Test
59     public void testDecoder() throws NotFoundException
60     { 
61             //二维码图片路径
62             String path = this.getClass().getClassLoader().getResource("1.gif").getPath();
63             File imageFile = new File(path);
64             BufferedImage image = null;
65             try {
66                 image = ImageIO.read(imageFile);
67                  LuminanceSource source = new BufferedImageLuminanceSource(image);  
68                  Binarizer binarizer = new HybridBinarizer(source);  
69                  BinaryBitmap binaryBitmap = new BinaryBitmap(binarizer);
70                  Map<DecodeHintType, Object> hints = new HashMap<DecodeHintType, Object>();
71                  hints.put(DecodeHintType.CHARACTER_SET, "UTF-8");  
72                  //解码获取二维码中信息
73                  Result result = new MultiFormatReader().decode(binaryBitmap, hints);  
74                  System.out.println(result.getText());
75             } catch (IOException e) { 
76                 e.printStackTrace();
77             } 
78     }
79 }

 

package com.csii.zxing.test; import java.awt.image.BufferedImage; import java.io.File; import java.io.IOException; import java.util.HashMap; import java.util.Hashtable; import java.util.Map; import javax.imageio.ImageIO; import org.junit.Test; 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 ZxingTest { @SuppressWarnings("deprecation") @Test public void testEncoder() { //二维码内容 String text = "http://blog.csdn.net/rongbo_j"; int width = 200; //二维码图片宽度 int height = 200; //高度 String format = "gif"; //图片格式 Hashtable<EncodeHintType, String> hints = new Hashtable<EncodeHintType, String>(); hints.put(EncodeHintType.CHARACTER_SET, "utf-8"); BitMatrix bitMatrix = null; try { //编码 bitMatrix = new MultiFormatWriter().encode(text, BarcodeFormat.QR_CODE, width, height, hints); } catch (WriterException e1) { e1.printStackTrace(); } File outputFile = new File("src/1.gif"); try { //输出二维码图片 MatrixToImageWriter.writeToFile(bitMatrix, format, outputFile); } catch (IOException e) { e.printStackTrace(); } } @Test public void testDecoder() throws NotFoundException { //二维码图片路径 String path = this.getClass().getClassLoader().getResource("1.gif").getPath(); File imageFile = new File(path); BufferedImage image = null; try { image = ImageIO.read(imageFile); 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"); //解码获取二维码中信息 Result result = new MultiFormatReader().decode(binaryBitmap, hints); System.out.println(result.getText()); } catch (IOException e) { e.printStackTrace(); } } }