下面开始写代码
package com.wmsDemo.QRCode;
import java.awt.Color;
import java.awt.Graphics2D;
import java.awt.image.BufferedImage;
import java.io.File;
import java.text.SimpleDateFormat;
import java.util.Date;
import javax.imageio.ImageIO;
import com.swetake.util.Qrcode;
public class QRCodeEncoderHandler {
public void encoderQRCode(String content, String imgPath) {
try {
Qrcode qrcodeHandler = new Qrcode();
// 设置二维码排错率,可选L(7%)、M(15%)、Q(25%)、H(30%),排错率越高可存储的信息越少,但对二维码清晰度的要求越小
qrcodeHandler.setQrcodeErrorCorrect('H');
qrcodeHandler.setQrcodeEncodeMode('B');
qrcodeHandler.setQrcodeVersion(5);
System.out.println(content);
// int imgSize = 67 + 12 * (size - 1);
byte[] contentBytes = content.getBytes("gb2312");
BufferedImage bufImg = new BufferedImage(115, 115,
BufferedImage.TYPE_INT_RGB);
Graphics2D gs = bufImg.createGraphics();
gs.setBackground(Color.WHITE);
gs.clearRect(0, 0, 115, 115);
// 设定图像颜色> BLACK
gs.setColor(Color.BLACK);
// 设置偏移量 不设置可能导致解析出错
int pixoff = 2;
// 输出内容> 二维码
if (contentBytes.length > 0 && contentBytes.length < 800) {
boolean[][] codeOut = qrcodeHandler.calQrcode(contentBytes);
for (int i = 0; i < codeOut.length; i++) {
for (int j = 0; j < codeOut.length; j++) {
if (codeOut[j][i]) {
gs.fillRect(j * 3 + pixoff, i * 3 + pixoff, 3, 3);
}
}
}
} else {
System.err.println("QRCode content bytes length = "
+ contentBytes.length + " not in [ 0,120 ]. ");
}
gs.dispose();
bufImg.flush();
File imgFile = new File(imgPath);
// 生成二维码QRCode图片
ImageIO.write(bufImg, "png", imgFile);
} catch (Exception e) {
e.printStackTrace();
}
}
/**
* @param args the command line arguments
*/
public static void main(String[] args) {
//取当前时间为图片名称 带毫秒的
SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMddHHmmssSSS" );
Date d=new Date();
String str=sdf.format(d);
String imgPath = "D:/QRCode/twocode/"+str+".png";
String content= "这是测试";
QRCodeEncoderHandler handler = new QRCodeEncoderHandler();
handler.encoderQRCode(content, imgPath);
System.out.println("imgPath:"+imgPath);
System.out.println("encoder QRcode success");
}
}