【#文档大全网# 导语】以下是®文档大全网的小编为您整理的《二维码生成器_》,欢迎阅读!
二维码生成
以下是生成二维码的简单实例:
package com.weixin.demo;
import java.awt.Color; import java.awt.Graphics2D;
import java.awt.image.BufferedImage; import java.io.File;
import javax.imageio.ImageIO;
import com.swetake.util.Qrcode; /**
* 二维码生成器
* @blog http://www.baidu.com * @author Michael */
public class QRCodeEncoderHandler { /**
* 生成二维码(QRCode)图片 * @param content * @param imgPath */
public void encoderQRCode(String content, String imgPath) { try {
Qrcode qrcodeHandler = new Qrcode(); qrcodeHandler.setQrcodeErrorCorrect('M'); qrcodeHandler.setQrcodeEncodeMode('B'); qrcodeHandler.setQrcodeVersion(7);
System.out.println(content);
byte[] contentBytes = content.getBytes("gb2312");
BufferedImage bufImg = new BufferedImage(140, 140, BufferedImage.TYPE_INT_RGB);
Graphics2D gs = bufImg.createGraphics();
gs.setBackground(Color.WHITE);
gs.clearRect(0, 0, 140, 140);
// 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 < 120) { boolean[][]
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, 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) { String imgPath = "F:/Michael_QRCode.png";
codeOut
=
String content = "http://www.baidu.com";
QRCodeEncoderHandler handler = new QRCodeEncoderHandler(); handler.encoderQRCode(content, imgPath);
System.out.println("encoder QRcode success"); } }
本文来源:https://www.wddqxz.cn/83e97eff71fe910ef12df8fa.html