Java生成二維碼方法事例
import java.io.*;
import java.util.Date;
import java.awt.*;
import java.awt.image.*;
import javax.imageio.*;
import com.swetake.util.Qrcode;
public class QRCodeEncoderTest {
public QRCodeEncoderTest() {
}
public static void create_image(String sms_info) throws Exception {
try {
Qrcode testQrcode = new Qrcode();
testQrcode.setQrcodeErrorCorrect('M');
testQrcode.setQrcodeEncodeMode('B');
testQrcode.setQrcodeVersion(20);
String testString = sms_info;
byte[] d = testString.getBytes("gbk");
System.out.println(d.length);
BufferedImage bi = new BufferedImage(98, 98,
BufferedImage.TYPE_BYTE_BINARY);
Graphics2D g = bi.createGraphics();
g.setBackground(Color.WHITE);
g.clearRect(0, 0, 98, 98);
g.setColor(Color.BLACK);
// 限制最大字節數為120
if (d.length > 0 && d.length < 300) {
boolean[][] s = testQrcode.calQrcode(d);
for (int i = 0; i < s.length; i++) {
for (int j = 0; j < s.length; j++) {
if (s[j][i]) {
g.fillRect(j * 2 + 3, i * 2 + 3, 2, 2);
}
}
}
}
g.dispose();
bi.flush();
File f = new File("D:\\QRCodeTest\\" + sms_info + ".jpg");
if (!f.exists()) {
f.createNewFile();
}
// 創建圖片
ImageIO.write(bi, "jpg", f);
} // end try
catch (Exception e) {
e.printStackTrace();
} // end catch
}
public static void main(String[] args) throws Exception {
System.out.println(new Date());
QRCodeEncoderTest.create_image("QRCode");
System.out.println(new Date());
}
}
一份Java 生成二維碼實例完整源碼下載:
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下載在Linux公社的1號FTP服務器裡,下載地址:
FTP地址:ftp://www.linuxidc.com
用戶名:www.linuxidc.com
密碼:www.muu.cc
在 2013年LinuxIDC.com\4月\Java生成二維碼方法事例
下載方法見 http://www.linuxidc.net/thread-1187-1-1.html
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