二維碼生成Applet

好久沒有寫博客了，今天重操舊筆，寫一點關於二維碼的東西。二維碼在日本早就很流行了，隨着近來移動終端在國內的火爆，二維碼

將會是個很有意思的方向。

二維碼的具體信息可google搜下。下面給一個開源的生成二維碼得網站：www.swetake.com

 

下面是一段生成二維碼的Appletimport java.applet.*; import java.awt.*; import java.awt.event.*; import com.swetake.util.Qrcode; public class QrAppletSample extends Applet { private Button buttonEncode; private TextField qrData; public void init(){ buttonEncode = new Button("encode"); qrData = new TextField("01234567"); qrData.setBounds(0,150,180,20); buttonEncode.setBounds(0,180,60,20); EventHandler eh = new EventHandler(); buttonEncode.addActionListener(eh); this.setLayout(null); this.add(buttonEncode); this.add(qrData); } public void start(){ setBackground(java.awt.Color.white); } public void paint(Graphics gs){ Qrcode x=new Qrcode(); x.setQrcodeErrorCorrect('M'); x.setQrcodeEncodeMode('B'); x.setQrcodeVersion(7); byte[] d =qrData.getText().getBytes(); if (d.length>0 && d.length <120){ boolean[][] s = x.calQrcode(d); for (int i=0;i<s.length;i++){ for (int j=0;j<s.length;j++){ if (s[j][i]) { gs.fillRect(j*3,i*3,3,3); } } } } } class EventHandler implements ActionListener { public void actionPerformed(ActionEvent e) { repaint(); } } }