package com.hx.util;
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import java.awt.*;
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import java.awt.image.BufferedImage;
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import java.io.ByteArrayOutputStream;
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import java.io.File;
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import java.io.IOException;
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import java.text.SimpleDateFormat;
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import java.util.*;
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import java.util.List;
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import javax.imageio.ImageIO;
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import com.google.zxing.*;
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import com.google.zxing.client.j2se.BufferedImageLuminanceSource;
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import com.google.zxing.common.BitMatrix;
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import com.google.zxing.common.HybridBinarizer;
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import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;
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public class QRCodeUtil {
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// 二维码颜色==黑色
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private static final int BLACK = 0xFF000000;
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// 二维码颜色==白色
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private static final int WHITE = 0xFFFFFFFF;
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// 二维码图片格式==jpg和png两种
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private static final List<String> IMAGE_TYPE = new ArrayList<>();
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static {
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IMAGE_TYPE.add("jpg");
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IMAGE_TYPE.add("png");
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}
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/**
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* zxing方式生成二维码（返回base64）
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* 注意：
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* 1,文本生成二维码的方法独立出来,返回image流的形式,可以输出到页面
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* 2,设置容错率为最高,一般容错率越高,图片越不清晰, 但是只有将容错率设置高一点才能兼容logo图片
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* 3,logo图片默认占二维码图片的20%,设置太大会导致无法解析
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*
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* @param content 二维码包含的内容，文本或网址
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* @param size 生成的二维码图片尺寸 可以自定义或者默认（250）
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* @param logoPath logo的存放位置
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*/
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public static String QRCodeCreate(String content, Integer size, String logoPath) {
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ByteArrayOutputStream bos = null;
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if(size == null){
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size = 400;
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}
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try{
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char[] rands = content.toCharArray();
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//获取二维码流的形式，写入到目录文件中
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BufferedImage image = getBufferedImage(content, size, logoPath);
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bos = new ByteArrayOutputStream();
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ImageIO.write(image, "JPEG", bos);
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byte[] buf = bos.toByteArray();
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return "data:image/png;base64,"+Base64.getEncoder().encodeToString(buf);
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}catch (Exception e){
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e.printStackTrace();
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}finally {
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if(bos != null) {
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try {
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bos.close();
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} catch (IOException e) {
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e.printStackTrace();
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}
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bos = null;
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}
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}
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return null;
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}
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/**
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* zxing方式生成二维码（返回路径）
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* 注意：
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* 1,文本生成二维码的方法独立出来,返回image流的形式,可以输出到页面
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* 2,设置容错率为最高,一般容错率越高,图片越不清晰, 但是只有将容错率设置高一点才能兼容logo图片
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* 3,logo图片默认占二维码图片的20%,设置太大会导致无法解析
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*
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* @param content 二维码包含的内容，文本或网址
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* @param path 生成的二维码图片存放位置
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* @param size 生成的二维码图片尺寸 可以自定义或者默认（250）
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* @param logoPath logo的存放位置
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* @param autoDateFolder 在存放链接上生成日期文件夹，格式是yyyyMM
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*/
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public static String QRCodeCreate(String content, String path, Integer size, String logoPath,Boolean autoDateFolder) {
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try {
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Date newDate = new Date();
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if(autoDateFolder){
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if(autoDateFolder){
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if(path.endsWith("/")){
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path = path+dateFormat(newDate,"yyyyMM")+"/";
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}else{
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path = path+"/"+dateFormat(newDate,"yyyyMM")+"/";
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}
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}
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}
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path = path+newDate.getTime()+".jpg";
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//图片类型
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String imageType = "jpg";
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//获取二维码流的形式，写入到目录文件中
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BufferedImage image = getBufferedImage(content, size, logoPath);
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//获得随机数
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Random random = new Random();
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//生成二维码存放文件
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File file = new File(path);
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if (!file.exists()) {
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file.mkdirs();
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}
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ImageIO.write(image, imageType, file);
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} catch (IOException e) {
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e.printStackTrace();
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}
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return path;
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}
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/**
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* 二维码流的形式，包含文本内容
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*
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* @param content 二维码文本内容
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* @param size 二维码尺寸
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* @param logoPath logo的存放位置
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* @return
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*/
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public static BufferedImage getBufferedImage(String content, Integer size, String logoPath) {
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if (size == null || size <= 0) {
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size = 250;
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}
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BufferedImage image = null;
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try {
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// 设置编码字符集
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Map<EncodeHintType, Object> hints = new HashMap<>();
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//设置编码
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hints.put(EncodeHintType.CHARACTER_SET, "UTF-8");
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//设置容错率最高
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hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);
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hints.put(EncodeHintType.MARGIN, 1);
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// 1、生成二维码
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MultiFormatWriter multiFormatWriter = new MultiFormatWriter();
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BitMatrix bitMatrix = multiFormatWriter.encode(content, BarcodeFormat.QR_CODE, size, size, hints);
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// 2、获取二维码宽高
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int codeWidth = bitMatrix.getWidth();
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int codeHeight = bitMatrix.getHeight();
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// 3、将二维码放入缓冲流
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image = new BufferedImage(codeWidth, codeHeight, BufferedImage.TYPE_INT_RGB);
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for (int i = 0; i < codeWidth; i++) {
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for (int j = 0; j < codeHeight; j++) {
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// 4、循环将二维码内容定入图片
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image.setRGB(i, j, bitMatrix.get(i, j) ? BLACK : WHITE);
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}
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}
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//判断是否写入logo图片
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if (logoPath != null && !"".equals(logoPath)) {
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File logoPic = new File(logoPath);
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if (logoPic.exists()) {
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Graphics2D g = image.createGraphics();
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BufferedImage logo = ImageIO.read(logoPic);
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int widthLogo = logo.getWidth(null) > image.getWidth() * 2 / 10 ? (image.getWidth() * 2 / 10) : logo.getWidth(null);
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int heightLogo = logo.getHeight(null) > image.getHeight() * 2 / 10 ? (image.getHeight() * 2 / 10) : logo.getHeight(null);
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int x = (image.getWidth() - widthLogo) / 2;
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int y = (image.getHeight() - heightLogo) / 2;
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// 开始绘制图片
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g.drawImage(logo, x, y, widthLogo, heightLogo, null);
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g.drawRoundRect(x, y, widthLogo, heightLogo, 15, 15);
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//边框宽度
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g.setStroke(new BasicStroke(2));
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//边框颜色
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g.setColor(Color.WHITE);
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g.drawRect(x, y, widthLogo, heightLogo);
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g.dispose();
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logo.flush();
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image.flush();
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}
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}
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} catch (WriterException e) {
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e.printStackTrace();
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} catch (IOException e) {
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e.printStackTrace();
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}
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return image;
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}
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/**
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* 给二维码图片添加Logo
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*
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* @param qrPic 二维码图片
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* @param logoPic logo图片
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* @param path 合成后的图片存储目录
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*/
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public static boolean zxingCodeCreate(File qrPic, File logoPic, String path) {
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try {
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String imageType = path.substring(path.lastIndexOf(".") + 1).toLowerCase();
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if (!IMAGE_TYPE.contains(imageType)) {
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return false;
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}
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if (!qrPic.isFile() && !logoPic.isFile()) {
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return false;
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}
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//读取二维码图片，并构建绘图对象
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BufferedImage image = ImageIO.read(qrPic);
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Graphics2D g = image.createGraphics();
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//读取Logo图片
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BufferedImage logo = ImageIO.read(logoPic);
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//设置logo的大小,最多20%0
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int widthLogo = logo.getWidth(null) > image.getWidth() * 2 / 10 ? (image.getWidth() * 2 / 10) : logo.getWidth(null);
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int heightLogo = logo.getHeight(null) > image.getHeight() * 2 / 10 ? (image.getHeight() * 2 / 10) : logo.getHeight(null);
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// 计算图片放置位置，默认在中间
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int x = (image.getWidth() - widthLogo) / 2;
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int y = (image.getHeight() - heightLogo) / 2;
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// 开始绘制图片
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g.drawImage(logo, x, y, widthLogo, heightLogo, null);
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g.drawRoundRect(x, y, widthLogo, heightLogo, 15, 15);
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//边框宽度
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g.setStroke(new BasicStroke(2));
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//边框颜色
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g.setColor(Color.WHITE);
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g.drawRect(x, y, widthLogo, heightLogo);
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g.dispose();
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logo.flush();
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image.flush();
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File newFile = new File(path);
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if (!newFile.exists()) {
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newFile.mkdirs();
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}
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ImageIO.write(image, imageType, newFile);
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return true;
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} catch (Exception e) {
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e.printStackTrace();
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return false;
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}
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}
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/**
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* 二维码的解析方法
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*
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* @param path 二维码图片目录
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* @return
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*/
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public static Result zxingCodeAnalyze(String path) {
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try {
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MultiFormatReader formatReader = new MultiFormatReader();
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File file = new File(path);
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if (file.exists()) {
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BufferedImage image = ImageIO.read(file);
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LuminanceSource source = new BufferedImageLuminanceSource(image);
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Binarizer binarizer = new HybridBinarizer(source);
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BinaryBitmap binaryBitmap = new BinaryBitmap(binarizer);
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Map hints = new HashMap();
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hints.put(EncodeHintType.CHARACTER_SET, "UTF-8");
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Result result = formatReader.decode(binaryBitmap, hints);
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return result;
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}
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} catch (IOException e) {
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e.printStackTrace();
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} catch (NotFoundException e) {
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e.printStackTrace();
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}
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return null;
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}
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/**
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*
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* @param date 时间
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* @param format 时间格式
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* @return 返回的时间格式字符串
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*/
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public static String dateFormat(Date date,String format) {
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SimpleDateFormat df = new SimpleDateFormat(format);//设置日期格式
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return df.format(date);
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}
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}
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