java代码生成QRcode二维码

 1 import java.io.File;
 2 import java.io.IOException;
 3 import java.io.PrintWriter;
 4 import java.nio.file.FileSystems;
 5 import java.nio.file.Path;
 6 import java.text.SimpleDateFormat;
 7 import java.util.Date;
 8 import java.util.UUID;
 9 
10 import com.google.zxing.BarcodeFormat;
11 import com.google.zxing.WriterException;
12 import com.google.zxing.client.j2se.MatrixToImageWriter;
13 import com.google.zxing.common.BitMatrix;
14 import com.google.zxing.qrcode.QRCodeWriter;     
15 private static void generateQRCodeImage(String text, int width, int height, String filePath) throws WriterException, IOException {
16  File file=new File("F:\\affix\\QRCode\\");
17         if(!file.exists()){//如果文件夹不存在
18             //file.mkdir();创建单个文件夹
19             file.mkdirs();//mkdirs创建多级文件夹
20         }
21          UUID   uuid = UUID.randomUUID();
22       String guid=uuid.toString();
23     String filePath="F:\\affix\\QRCode\\"+guid+".png";
24     System.out.println("************"+filePath);
25         try {
26         QRCodeWriter qrCodeWriter = new QRCodeWriter();
27         BitMatrix bitMatrix = qrCodeWriter.encode("二维码内容", BarcodeFormat.QR_CODE, 350, 350);
28         //这个java.nio.file.FileSystems必须在1.7以上才可以
29         Path path = FileSystems.getDefault().getPath(filePath);
30         MatrixToImageWriter.writeToPath(bitMatrix, "PNG", path);
31         } catch (WriterException e) {
32             System.out.println("未能正常生成二维码，WriterException :: " + e.getMessage());
33         } catch (IOException e) {
34             System.out.println("未能正常生成二维码, IOException :: " + e.getMessage());
35         }    
36 }
37 
38     public static void main(String[] args) {
39         try {
40             String QR_CODE_IMAGE_PATH = "d:\xxx";
41             generateQRCodeImage("This is my first QR Code", 350, 350, "QR_CODE_IMAGE_PATH");
42         } catch (WriterException e) {
43             System.out.println("Could not generate QR Code, WriterException :: " + e.getMessage());
44         } catch (IOException e) {
45             System.out.println("Could not generate QR Code, IOException :: " + e.getMessage());
46         }
47         
48     }