123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137 |
- /*
- * *********************************************************************************************************************
- *
- * !!
- * .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 <sybotan@126.com>
- */
- 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<EncodeHintType, Any>()
- 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
- }
- }
|