二维码的生成

没有path 和 topath 怎么办呢

改变需要时间

2016-08-21

源自：Java生成二维码 6-2

关注问题我要回答

295

操作

收起

3 回答

qq_Successful_13953008
2016-09-21

package QRCode1;

import java.io.File;
import java.io.OutputStream;
import java.util.HashMap;

import javax.sound.midi.Patch;

import com.google.zxing.BarcodeFormat;
import com.google.zxing.EncodeHintType;
import com.google.zxing.MultiFormatWriter;
import com.google.zxing.WriterException;
import com.google.zxing.client.j2se.MatrixToImageWriter;
import com.google.zxing.common.BitMatrix;
import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;

public class QRcode {

//生成二维码
   public static void main(String[] args) {
       int width=300;
       int height=300;
       String format="png";
       String content="www.baidu.com";
       //定义二维码的参数
       HashMap hints=new HashMap();
       hints.put(EncodeHintType.CHARACTER_SET, "utf-8");
       hints.put(EncodeHintType.ERROR_CORRECTION,ErrorCorrectionLevel.M);
       hints.put(EncodeHintType.MARGIN,2);


       String contents = null;
       try {
          BitMatrix    bitmatrix =new MultiFormatWriter().encode(contents, BarcodeFormat.QR_CODE , width, height,hints);
          BitMatrix bitmarix;



       // Path file = new File("D:/img.png").toPath();
        // 同问这个问题，我的没有这个方法，topath

        //MatrixToImageWriter.writeToPath(bitmatrix, format, file);


       } catch (Exception e) {

           e.printStackTrace();
       }
   }

}