/* * ********************************************************************************************************************* * * !! * .F88X * X8888Y * .}888888N; * i888888N; .:! .I$WI: * R888888I .'N88~ i8}+8Y&8"l8i$8>8W~'>W8}8]KW+8IIN"8& * .R888888I .;N8888~ .X8' "8I.!,/8" !%NY8`"8I8~~8>,88I * +888888N; .8888888Y "&&8Y.}8, * ./888888N; .R888888Y .'}~ .>}'.`+> i}! "i' +/' .'i~ !11,.:">, .~]! .i}i * ~888888%: .I888888l .]88~`1/iY88Ii+1'.R$8$8]"888888888> Y8$ W8E X8E W8888'188Il}Y88$* * 18888888 E8888881 .]W%8$`R8X'&8%++N8i,8N%N8+l8%` .}8N:.R$RE%N88N%N$K$R 188,FE$8%~Y88I * .E888888I .i8888888' .:$8I;88+`E8R:/8N,.>881.`$8E/1/]N8X.Y8N`"KF&&FK!'88*."88K./$88%RN888+~ * 8888888I .,N888888~ ~88i"8W,!N8*.I88.}888%F,i$88"F88" 888:E8X.>88!i88>`888*.}Fl1]*}1YKi' * i888888N' I888Y ]88;/EX*IFKFK88X K8R .l8W 88Y ~88}'88E&%8W.X8N``]88!.$8K .:W8I * .i888888N; I8Y .&8$ .X88! i881.:%888>I88 ;88] +88+.';;;;:.Y88X 18N.,88l .+88/ * .:R888888I * .&888888I Copyright (c) 2016-2020. 博锐尚格科技股份有限公司 * ~8888' * .!88~ All rights reserved. * * ********************************************************************************************************************* */ package com.persagy.service.utils import com.google.zxing.BarcodeFormat import com.google.zxing.EncodeHintType import com.google.zxing.WriterException import com.google.zxing.qrcode.QRCodeWriter import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel import java.awt.image.BufferedImage import java.io.IOException import java.util.* import javax.imageio.ImageIO import javax.servlet.ServletOutputStream import javax.servlet.http.HttpServletResponse /** * 二维码生成工具 * * @author 庞利祥 */ object SQrCodeUtil { var bgColor = 0xFFFFFF var pixelColor = 0x0 /** * 生成并返回二维码到 Web 客户端 * * @param response web 请求应答体 * @param contents 二维码存储的内容 * @param size 二维码大小 * @param logo 二维码中间的 logo 图像 * @return 二维码图像 */ fun outQrCode(response: HttpServletResponse, contents: String, size: Int, logo: BufferedImage? = null) { val buffImg = createQrCode(contents, size, logo) /** 禁止图像缓存 */ response.setHeader("Pragma", "no-cache") response.setHeader("Cache-Control", "no-cache") response.setDateHeader("Expires", 0) response.contentType = "image/jpeg" /** 将图像输出到Servlet输出流中 */ val sos: ServletOutputStream try { sos = response.outputStream ImageIO.write(buffImg, "jpeg", sos) sos.close() } catch (e: IOException) { e.printStackTrace() } return } /** * 创建二维码图像 * * @param contents 二维码存储的内容 * @param size 二维码大小 * @return 二维码图像 */ fun createQrCode(contents: String, size: Int, logo: BufferedImage? = null): BufferedImage? { try { val hints = Hashtable() hints[EncodeHintType.CHARACTER_SET] = "utf-8" hints[EncodeHintType.ERROR_CORRECTION] = ErrorCorrectionLevel.L val matrix = QRCodeWriter().encode(contents, BarcodeFormat.QR_CODE, size, size, hints) var image = BufferedImage(size, size, BufferedImage.TYPE_INT_RGB) for (y in 0 until size) { for (x in 0 until size) { if (matrix.get(x, y)) { image.setRGB(x, y, pixelColor) } else { image.setRGB(x, y, bgColor) } } } if (null != logo) { image = addLogo(image, logo) } return image } catch (e: WriterException) { e.printStackTrace() } return null } /** * 为二维码图片增加 Logo * * @param src 二维码图片 * @param logo Logol 图片 * @return 添加过 Logo 的二维码图片 */ private fun addLogo(src: BufferedImage, logo: BufferedImage): BufferedImage { val srcWidth = src.width val srcHeight = src.height val logoWidth = logo.width val logoHeight = logo.height val image = BufferedImage(srcWidth, srcHeight, BufferedImage.TYPE_4BYTE_ABGR) val gd = image.createGraphics() gd.drawImage(src,0,0, null) gd.drawImage(logo,srcWidth * 2 / 5, srcHeight * 2 / 5, srcWidth * 3 / 5, srcHeight / 5, null) return image } }