二维码utils希望对大家有帮助

package cn.itcast.utils;

 

import java.io.File;

import java.nio.file.Path;

import java.util.HashMap;

 

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.datamatrix.encoder.ErrorCorrection;

import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;

 

public class ZxingUtils {

    

    public static void main(String[] args) {

        //定义宽度,高度,内容,格式

        int width = 300;

        int higth = 300;

        String format = "png";

        String content = "http://www.itcast.cn/";

        //定义一个map

        HashMap hints = new HashMap<>();

        hints.put(EncodeHintType.CHARACTER_SET, "utf-8");

        hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.M);

        hints.put(EncodeHintType.MARGIN, 2);

        try {

            BitMatrix bitMatrix =  new MultiFormatWriter().encode(content,BarcodeFormat.QR_CODE, width, higth,hints);

            Path file = new File("D:/code/img.png").toPath();

            MatrixToImageWriter.writeToPath(bitMatrix, format, file );

        } catch (Exception e) {

            e.printStackTrace();

        }

    }

 

}