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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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} |