fuint-application/application-service/src/main/java/com/fuint/application/util/QRCodeUtil.java

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package com.fuint.application.util;

import com.fuint.util.StringUtil;
import com.google.zxing.*;
import com.google.zxing.client.j2se.BufferedImageLuminanceSource;
import com.google.zxing.common.BitMatrix;
import com.google.zxing.common.HybridBinarizer;
import com.google.zxing.qrcode.QRCodeReader;
import com.google.zxing.qrcode.QRCodeWriter;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.imageio.ImageIO;
import java.awt.*;
import java.awt.image.BufferedImage;
import java.io.*;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.HashMap;

/**
 * 二维码生成工具类
 * Created by FSQ
 * Contact wx fsq_better
 * Site https://www.fuint.cn
 */
public class QRCodeUtil {
    public static final Logger logger = LoggerFactory.getLogger(QRCodeUtil.class);

    /**
     * 生成包含字符串信息的二维码图片
     *
     * @param outputStream 文件输出流路径
     * @param content      二维码携带信息
     * @param width        宽度
     * @param height       高度
     * @param imageFormat  二维码的格式
     * @param resource     原图
     */
    public static boolean createQrCode(OutputStream outputStream, String content, int width, int height, String imageFormat, String resource) {
        //设置二维码纠错级别
        HashMap<EncodeHintType, String> hints = new HashMap<EncodeHintType, String>();
        hints.put(EncodeHintType.CHARACTER_SET, "utf-8");
        width = width + 200;
        height = height + 200;
        try {
            //创建比特矩阵(位矩阵)的QR码编码的字符串
            QRCodeWriter qrCodeWriter = new QRCodeWriter();
            BitMatrix byteMatrix = qrCodeWriter.encode(content, BarcodeFormat.QR_CODE, width, height, hints);

            // 使BufferedImage勾画QRCode  (matrixWidth 是行二维码像素点)
            int matrixWidth = byteMatrix.getWidth();
            BufferedImage image = new BufferedImage(matrixWidth - 200, matrixWidth - 200, BufferedImage.TYPE_INT_RGB);

            // 使用比特矩阵画并保存图像
            image.createGraphics();
            Graphics2D graphics = (Graphics2D) image.getGraphics();
            graphics.setColor(Color.WHITE);
            graphics.fillRect(0, 0, matrixWidth, matrixWidth);
            graphics.setColor(Color.BLACK);
            for (int i = 0; i < matrixWidth; i++) {