以下是三個jar包,不管從哪找代碼,這三個jar包都足夠了;
http://viralpatel.net/blogs/download/jar/zxing-core-1.7.jar
http://viralpatel.net/blogs/download/jar/zxing-j2se-1.7.jar
http://download.csdn.net/detail/wangpeng047/4008532
主體代碼
package Com.iapp168.paas.baseframwork.xutil.QRCode;
import java.awt.Color;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.image.BufferedImage;
import java.io.File;
import javax.imageio.ImageIO;
import com.swetake.util.Qrcode;
public class QRCodeManager {
public static int logo(String content, String imgPath,String logo) {
try {
Qrcode qrcodeHandler = new Qrcode();
//設置二維碼排錯率,可選L(7%)、M(15%)、Q(25%)、H(30%),排錯率越高可存儲的信息越少,但對二維碼清晰度的要求越小
qrcodeHandler.setQrcodeErrorCorrect('M');
qrcodeHandler.setQrcodeEncodeMode('B');
// 設置設置二維碼尺寸,取值範圍1-40,值越大尺寸越大,可存儲的信息越大
qrcodeHandler.setQrcodeVersion(7);
// 獲得內容的字節數組,設置編碼格式
byte[] contentBytes = content.getBytes("utf-8");
//構造一個BufferedImage對象 設置寬、高
BufferedImage bufImg = new BufferedImage(140, 140, BufferedImage.TYPE_INT_RGB);
Graphics2D gs = bufImg.createGraphics();
gs.setBackground(Color.WHITE);
gs.clearRect(0, 0, 140, 140);
// 設定圖像顏色 BLACK
gs.setColor(Color.BLACK);
// 設置偏移量 不設置可能導致解析出錯
int pixoff = 2;
// 輸出內容 二維碼
if (contentBytes.length > 0 && contentBytes.length < 120) {
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);
}
}
}
System.out.println("生成成功");
} else {
System.err.println("QRCode content bytes length = "+ contentBytes.length + " not in [ 0,120 ]. ");
return -1;
}
//實例化一個Image對象。
Image img = ImageIO.read(new File(logo));
gs.drawImage(img, 44, 55, 49, 30, null);
gs.dispose();
bufImg.flush();
//生成二維碼QRCode圖片
File imgFile = new File(imgPath);
ImageIO.write(bufImg, "jpg", imgFile);
}catch (Exception e){
e.printStackTrace();
return -100;
}
return 0;
}
}
測試
package Com.iapp168.paas.baseframwork.xutil.QRCode;
public class QRCodeManagerTest {
public static void main(String[] args) {
QRCodeManager manager = new QRCodeManager();
//二維碼存放路徑
String imgPath = "c:/login/3.png";
//生成二維碼的內容,內容限制120字
String content = "辣雞,送你們一瓶風油精!!!";
//logo存放地址
String logo = "c:/login/QQ.png";
manager.logo(content, imgPath, logo);
}
}
如果不想帶參數的話去掉一個參數就可以了!