Java项目中使用谷歌zx实现一个二维码生成工具 - 行业资讯

　　介绍

这期内容当中小编将会给大家带来有关Java项目中使用谷歌zx实现一个二维码生成工具,文章内容丰富且以专业的角度为大家分析和叙述,阅读完这篇文章希望大家可以有所收获。

以前只用过jQuery.qrcode生成过二维码,这次使用的是谷歌的zx通过Java代码生成二维码并以流的方式输出到前台页面

所需的jar包:zxing-3.2.1。jar

代码

前台展示页面

& lt; % @页面语言=癹ava"进口=癹ava.util。*”;pageEncoding=癠TF-8" %比; 　　& lt; % 　　字符串路径=request.getContextPath (); 　　字符串basePath=request.getScheme () +“://? request.getServerName () +“:“+ request.getServerPort() +路径“/? 　　%比; 　　& lt; !DOCTYPE html> 　　& lt; html> 　　& lt; head> 　　& lt; title>二维码& lt;/title> 　　& lt;元http-equiv=癈ontent-Type"内容=皌ext/html;charset=UTF-8"比; 　　https://www.yisu.com/zixun/& lt;脚本src=" http://apps.bdimg.com/libs/jquery/1.9.1/jquery.min.js "> 　　<时尚> 　　身体{text-align:中心;}> 头　　身体<> 　　请输入关键字,多个关键字请用逗号隔开　　
　　
　　

textarea> </</br>
　　<按钮>/* *
　　*生成一个二维码
　　* @param职责
　　* @param id
　　*/@Override
　　公共空间generateOneqrCode (HttpServletResponse resp字符串id) {
　　如果(TextUtil.isNotEmpty (id)) {
　　ServletOutputStream流=零;
　　尝试{
　　int宽度=200;//图片的宽度
　　int高度=200;//图片的高度
　　流=resp.getOutputStream ();
　　QRCodeWriter作家=new QRCodeWriter ();
　　BitMatrix m=作家。编码(id、BarcodeFormat。QR_CODE、高度、宽度);//以流的方式输出到前台,行动中返回null就可以
　　MatrixToImageWriter。writeToStream (m,“png"流);
　　}捕捉(IOException e) {
　　e.printStackTrace ();
　　}捕捉(WriterException e1) {
　　e1.printStackTrace ();
　　最后}{
　　如果(流!=null) {
　　尝试{
　　stream.flush ();
　　stream.close ();
　　}捕捉(IOException e) {
　　e.printStackTrace ();
　　}
　　}
　　}
　　}
　　}</pre> <p class="推出">上述就是小编为大家分享的Java项目中使用谷歌zx实现一个二维码生成工具了,如果刚好有类似的疑惑,不妨参照上述分析进行理解。如果想知道更多相关知识,欢迎关注行业资讯频道。</p><h2 class="entry-title"><a href="/zixun/jishu/131308.html" target="_blank" rel="bookmark">Java项目中使用谷歌zx实现一个二维码生成工具</a></h2>

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