java 生成图片二维码 

 通过java代码

 1 package Eve.lib;
 2 
 3 import java.awt.Color;
 4 import java.awt.Graphics2D;
 5 import java.awt.image.BufferedImage;
 6 import java.io.File;
 7 import java.io.IOException;
 8 import javax.imageio.ImageIO;
 9 import com.swetake.util.Qrcode;
10 
11 public class eva {
12     public static void main(String []args) throws IOException{
13         String string = "";//输入想说的话
14         
15         Qrcode qrcode = new Qrcode();
16         qrcode.setQrcodeErrorCorrect('M');
17         qrcode.setQrcodeEncodeMode('B');
18         qrcode.setQrcodeVersion(7);
19         
20         BufferedImage image = new BufferedImage(98,98,BufferedImage.TYPE_INT_RGB);
21         
22         Graphics2D graphics2d = image.createGraphics();
23         graphics2d.setBackground(Color.WHITE);
24         graphics2d.clearRect(0, 0, 98, 98);
25         graphics2d.setColor(Color.BLACK);
26         
27         byte[] b = string.getBytes("gbk");
28         
29         boolean[][] boo = qrcode.calQrcode(b);
30         
31         for(int i=0;i<boo.length;i++){
32             for(int j=0;j<boo.length;j++){
33                 if(boo[j][i]){
34                     graphics2d.fillRect(j * 2 +3, i * 2 +3, 2, 2);
35                 }
36             }
37         }
38         
39         File file = new File("F:/123.png");//输出的地址
40         ImageIO.write(image, "png", file);
41     }
42 }

 

posted @ 2020-10-14 19:00  买萌大叔  阅读(458)  评论(0)    收藏  举报