Java-二维码

2018-10-10 08:39:20来源：博客园阅读 ()

1 <!-- https://mvnrepository.com/artifact/com.google.zxing/core -->
2 <dependency>
3     <groupId>com.google.zxing</groupId>
4     <artifactId>core</artifactId>
5     <version>3.3.1</version>
6 </dependency>

 1 import java.io.File;
 2 import java.io.IOException;
 3 import java.nio.file.Path;
 4 import java.util.HashMap;
 5 import com.google.zxing.BarcodeFormat;
 6 import com.google.zxing.EncodeHintType;
 7 import com.google.zxing.MultiFormatWriter;
 8 import com.google.zxing.WriterException;
 9 import com.google.zxing.client.j2se.MatrixToImageWriter;
10 import com.google.zxing.common.BitMatrix;
11 import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;
12 
13 public class Test {
14 
15     public static void main(String[] args) {
16         //设置二维码像素
17         int width = 300;
18         int height = 300;
19         //二维码图片格式
20         String format = "png";
21         //二维码当中要存储的信息
22         String content = "http://www.xiang5.com";
23         HashMap<EncodeHintType, Comparable> hints = new HashMap<EncodeHintType, Comparable>();
24         hints.put(EncodeHintType.ERROR_CORRECTION,ErrorCorrectionLevel.M);
25         
26         //设置边距
27         try {
28             hints.put(EncodeHintType.MARGIN,2);
29             BitMatrix bitMatrix = new MultiFormatWriter().encode(content,BarcodeFormat.QR_CODE,width,height,hints);
30             Path file = new File("D:/qrcode.png").toPath();
31             MatrixToImageWriter.writeToPath(bitMatrix,format,file);
32         } catch (WriterException e) {
33             e.printStackTrace();
34         } catch (IOException e) {
35             e.printStackTrace();
36         }
37     }
38 }