package com.ruoyi.auction.util;
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import com.google.zxing.BarcodeFormat;
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import com.google.zxing.EncodeHintType;
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import com.google.zxing.WriterException;
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import com.google.zxing.common.BitMatrix;
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import com.google.zxing.qrcode.QRCodeWriter;
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import java.io.ByteArrayOutputStream;
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import java.io.IOException;
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import java.util.Base64;
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import java.util.HashMap;
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public class CreateQrCode {
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private static final String base64Url = "data:image/png;base64,";
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/**
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* 创建二维码
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*
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* @param
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* @param
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* @return
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* @throws IOException
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* @throws WriterException
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*/
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public static String createQRCode(String json) throws IOException, WriterException {
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QRCodeWriter qrCodeWriter = new QRCodeWriter();
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HashMap<EncodeHintType, Object> hints = new HashMap<>();
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hints.put(EncodeHintType.CHARACTER_SET, "utf-8");
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BitMatrix bitMatrix = qrCodeWriter.encode(json, BarcodeFormat.QR_CODE, 600, 600, hints);
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ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
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MatrixToImageWriter.writeToStream(bitMatrix, "PNG", outputStream);
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Base64.Encoder encoder = Base64.getEncoder();
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String text = encoder.encodeToString(outputStream.toByteArray());
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return base64Url + text;
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}
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}
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