求助基于Ean-13 用C#开发条形码生成与识别方法

各位大神 新人求助基于Ean-13 用C#开发条形码生成与识别方法 最好可以给个见习方式深入探讨!!!

3个回答

CW_Leung
CW_Leung 我在网上也找到了这个 一模一样的 花了我两块钱下载
4 年多之前 回复
CW_Leung
CW_Leung 我在网上也找到了这个 一模一样的 花了我两块钱下载
4 年多之前 回复

我把代码打进去用不了 怎么回事呢

我把代码打进去用不了 怎么回事呢

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java编译器读取每行代码顺序是从左往右还是从右往左 例如 int a=1; int b=2; int c=3; int d=a+b*c int d=a+b*c是从左往右读取还是按优先级读取 编译器读取每行代码都是从左往右读取吗

求助各位大神,求指点,帮帮我

描述 编写程序实现如下功能: ‪‬‪‬‪‬‪‬‪‬‮‬‪‬‮‬‪‬‪‬‪‬‪‬‪‬‮‬‪‬‪‬‪‬‪‬‪‬‪‬‪‬‮‬‫‬‪‬‪‬‪‬‪‬‪‬‪‬‮‬‭‬‪‬‪‬‪‬‪‬‪‬‪‬‮‬‫‬‭‬‪‬‪‬‪‬‪‬‪‬‮‬‪‬‭‬ 程序接收用户输入原文(只能为大小写英文字母和阿拉伯数字),运行后输出密文。原文和密文的对应关系为:‪‬‪‬‪‬‪‬‪‬‮‬‪‬‭‬‪‬‪‬‪‬‪‬‪‬‮‬‪‬‮‬‪‬‪‬‪‬‪‬‪‬‮‬‪‬‭‬‪‬‪‬‪‬‪‬‪‬‮‬‪‬‭‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬ ‪‬‪‬‪‬‪‬‪‬‮‬‪‬‮‬‪‬‪‬‪‬‪‬‪‬‮‬‪‬‪‬‪‬‪‬‪‬‪‬‪‬‮‬‫‬‪‬‪‬‪‬‪‬‪‬‪‬‮‬‭‬‪‬‪‬‪‬‪‬‪‬‪‬‮‬‫‬‭‬‪‬‪‬‪‬‪‬‪‬‮‬‪‬‭‬ 原文:abc...xyzABC...XYZ012...789‪‬‪‬‪‬‪‬‪‬‮‬‪‬‭‬‪‬‪‬‪‬‪‬‪‬‮‬‪‬‮‬‪‬‪‬‪‬‪‬‪‬‮‬‪‬‭‬‪‬‪‬‪‬‪‬‪‬‮‬‪‬‭‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬ 密文:cde...zabCDE...ZAB123...890‪‬‪‬‪‬‪‬‪‬‮‬‪‬‭‬‪‬‪‬‪‬‪‬‪‬‮‬‪‬‮‬‪‬‪‬‪‬‪‬‪‬‮‬‪‬‭‬‪‬‪‬‪‬‪‬‪‬‮‬‪‬‭‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬‬ ‪‬‪‬‪‬‪‬‪‬‮‬‪‬‮‬‪‬‪‬‪‬‪‬‪‬‮‬‪‬‪‬‪‬‪‬‪‬‪‬‪‬‮‬‫‬‪‬‪‬‪‬‪‬‪‬‪‬‮‬‭‬‪‬‪‬‪‬‪‬‪‬‪‬‮‬‫‬‭‬‪‬‪‬‪‬‪‬‪‬‮‬‪‬‭‬ 原文和密文字符一对一对应; ‪‬‪‬‪‬‪‬‪‬‮‬‪‬‮‬‪‬‪‬‪‬‪‬‪‬‮‬‪‬‪‬‪‬‪‬‪‬‪‬‪‬‮‬‫‬‪‬‪‬‪‬‪‬‪‬‪‬‮‬‭‬‪‬‪‬‪‬‪‬‪‬‪‬‮‬‫‬‭‬‪‬‪‬‪‬‪‬‪‬‮‬‪‬‭‬ 原文字符a到y、A到Y对应的密文字符依次为该字符按英文字母顺序的下数第2个,数字0到8对应的密文字符依次为按阿拉伯数字顺序的下1个,例如原文为a,密文为c,原文为C密文为E,原文为5,密文为6; 字符y、z、Y、Z、9,依次对于a、b、A、B、0; ‪‬‪‬‪‬‪‬‪‬‮‬‪‬‮‬‪‬‪‬‪‬‪‬‪‬‮‬‪‬‪‬‪‬‪‬‪‬‪‬‪‬‮‬‫‬‪‬‪‬‪‬‪‬‪‬‪‬‮‬‭‬‪‬‪‬‪‬‪‬‪‬‪‬‮‬‫‬‭‬‪‬‪‬‪‬‪‬‪‬‮‬‪‬‭‬ 提示:使用 len() 函数,可以获得字符串中字符的个数,即字符串的长度,如 len('abc') 的结果是 3。‪‬‪‬‪‬‪‬‪‬‮‬‪‬‮‬‪‬‪‬‪‬‪‬‪‬‮‬‪‬‪‬‪‬‪‬‪‬‪‬‪‬‮‬‫‬‪‬‪‬‪‬‪‬‪‬‪‬‮‬‭‬‪‬‪‬‪‬‪‬‪‬‪‬‮‬‫‬‭‬‪‬‪‬‪‬‪‬‪‬‮‬‪‬‭‬ 注意: ‪‬‪‬‪‬‪‬‪‬‮‬‪‬‮‬‪‬‪‬‪‬‪‬‪‬‮‬‪‬‪‬‪‬‪‬‪‬‪‬‪‬‮‬‫‬‪‬‪‬‪‬‪‬‪‬‪‬‮‬‭‬‪‬‪‬‪‬‪‬‪‬‪‬‮‬‫‬‭‬‪‬‪‬‪‬‪‬‪‬‮‬‪‬‭‬ 输入格式 ‪‬‪‬‪‬‪‬‪‬‮‬‪‬‮‬‪‬‪‬‪‬‪‬‪‬‮‬‪‬‪‬‪‬‪‬‪‬‪‬‪‬‮‬‫‬‪‬‪‬‪‬‪‬‪‬‪‬‮‬‭‬‪‬‪‬‪‬‪‬‪‬‪‬‮‬‫‬‭‬‪‬‪‬‪‬‪‬‪‬‮‬‪‬‭‬ 用户输入数据为一行包含英文字符和数字的字符串,输入使用 input(),不要增加额外的提示信息。 ‪‬‪‬‪‬‪‬‪‬‮‬‪‬‮‬‪‬‪‬‪‬‪‬‪‬‮‬‪‬‪‬‪‬‪‬‪‬‪‬‪‬‮‬‫‬‪‬‪‬‪‬‪‬‪‬‪‬‮‬‭‬‪‬‪‬‪‬‪‬‪‬‪‬‮‬‫‬‭‬‪‬‪‬‪‬‪‬‪‬‮‬‪‬‭‬ 输出格式 ‪‬‪‬‪‬‪‬‪‬‮‬‪‬‮‬‪‬‪‬‪‬‪‬‪‬‮‬‪‬‪‬‪‬‪‬‪‬‪‬‪‬‮‬‫‬‪‬‪‬‪‬‪‬‪‬‪‬‮‬‭‬‪‬‪‬‪‬‪‬‪‬‪‬‮‬‫‬‭‬‪‬‪‬‪‬‪‬‪‬‮‬‪‬‭‬ 输出结果为一行密文,除此外不要输出任何内容。

使用php和mysql导出生成的excel文件大小非常大

<div class="post-text" itemprop="text"> <p>I am using php and mysql to generate excel file. Every thing works fine. I am using html table code and exporting data to excel file. But the downloaded file is having bigger size for 20k records it is showing nearly 35 MB. Below is my code .</p> <pre><code>&lt;?php $generated_date = date("Y-m-d-H-i-s"); $filename = 'order_detail_report'.$generated_date; header("Content-Type: application/xls"); header("Content-Disposition: attachment; filename=$filename.xls"); header("Pragma: no-cache"); header("Expires: 0"); ?&gt; </code></pre> <p>Html table code </p> <pre><code>&lt;table width="100%" border="0" cellspacing="0" cellpadding="0" &gt; &lt;tr&gt; &lt;th class="excel_style"&gt;Order Number&lt;/th&gt; &lt;th class="excel_style"&gt;EAN&lt;/th&gt; &lt;th class="excel_style"&gt;Article #&lt;/th&gt; &lt;th class="excel_style"&gt;Amazon Price&lt;/th&gt; &lt;th class="excel_style"&gt;ERP Price&lt;/th&gt; &lt;th class="excel_style"&gt;Requested Quantity&lt;/th&gt; &lt;th class="excel_style"&gt;Dispatch Quantity&lt;/th&gt; &lt;th class="excel_style"&gt;Rejected Quantity&lt;/th&gt; &lt;th class="excel_style"&gt;Cancelled Quantity&lt;/th&gt; &lt;/tr&gt; </code></pre> <p>While loop </p> <pre><code>&lt;?php $query = "my select query"; $res = mysqli_query($mysqliConn,$query); while($result= mysqli_fetch_assoc($res)){ ?&gt; &lt;tr&gt; &lt;td class="tdstyle"&gt;&lt;?php echo $result['order_id'];?&gt;&lt;/td&gt; &lt;td class="tdstyle"&gt;&lt;?php echo $result['ean'];?&gt;&lt;/td&gt; &lt;td class="tdstyle"&gt;&lt;?php echo $result['article_no'];?&gt;&lt;/td&gt; &lt;td class="tdstyle"&gt;&lt;?php echo $result['net_price'];?&gt;&lt;/td&gt; &lt;td class="tdstyle"&gt;&lt;?php echo $result['erp_price'];?&gt;&lt;/td&gt; &lt;td class="tdstyle"&gt;&lt;?php echo $result['requested_quantity'];?&gt;&lt;/td&gt; &lt;td class="tdstyle"&gt;&lt;?php echo $result['dispatch_quantity']?&gt;&lt;/td&gt; &lt;td class="tdstyle"&gt;&lt;?php echo $result['rejected_quanity'];?&gt;&lt;/td&gt; &lt;td class="tdstyle"&gt;&lt;?php echo $result['cancelled_quantity']?&gt;&lt;/td&gt; &lt;/tr&gt; &lt;?php } ?&gt; &lt;/table&gt; </code></pre> <p>How to solve this size of the file problem? Any help would be greatly appreciated. If I use phpexcel library I am getting some out of memory exception. So client asked me don't use phpexcel library.</p> </div>

Laravel 5 - 在与条件的hasMany关系上调用create()

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从产品组合数组中获取用户所选组合的值

<div class="post-text" itemprop="text"> <p>I need to get the EAN13 code for the combination that the user selects on the product page. </p> <p>I generated a PS module and hooked it to hookdisplayProductAdditionalInfo. In the module PHP file, I can only get an array with EAN13 codes for all the product combinations. </p> <pre><code>$product = new Product((int)Tools::getValue('id_product')); $id_lang = Context::getContext()-&gt;language-&gt;id; $combinations = $product-&gt;getAttributeCombinations((int)$id_lang, true); foreach ($combinations as $c) { printf ($c['ean13']); } </code></pre> <p>The code above prints all the EAN13 codes. I need to get only the EAN13 for the combination that the user selected/is seeing. Every time the user changes the combination, I need to refresh and get the current EAN13. </p> <p>The reason is that I'm sending the product code through API to an external server in order to get warehouses stocks and display on the screen.</p> </div>

易趣交易API返回'ISBN缺少值'错误

<div class="post-text" itemprop="text"> <p>I am using eBay Trading API to sell products on eBay.</p> <pre><code>$service = new Services\TradingService(array( 'apiVersion' =&gt; $config['tradingApiVersion'], 'sandbox' =&gt; $config['sandbox'], 'siteId' =&gt; Constants\SiteIds::GB }); $request = new Types\AddFixedPriceItemRequestType(); $item = new Types\ItemType(); ------------------------ ------------------------ </code></pre> <p>But it returns an error "<strong>ISBN is missing a value. Enter a value and try again.</strong>". How to set this value or EAN with this API ?</p> </div>

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说实话,自己的算法,我一个不会,太难了吧

程序员垃圾简历长什么样?

已经连续五年参加大厂校招、社招的技术面试工作,简历看的不下于万份 这篇文章会用实例告诉你,什么是差的程序员简历! 疫情快要结束了,各个公司也都开始春招了,作为即将红遍大江南北的新晋UP主,那当然要为小伙伴们做点事(手动狗头)。 就在公众号里公开征简历,义务帮大家看,并一一点评。《启舰:春招在即,义务帮大家看看简历吧》 一石激起千层浪,三天收到两百多封简历。 花光了两个星期的所有空闲时...

工作八年,月薪60K,裸辞两个月,投简历投到怀疑人生!

近日,有网友在某职场社交平台吐槽,自己裸辞两个月了,但是找工作却让自己的心态都要崩溃了,全部无果,不是已查看无回音,就是已查看不符合。 “工作八年,两年一跳,裸辞两个月了,之前月薪60K,最近找工作找的心态崩了!所有招聘工具都用了,全部无果,不是已查看无回音,就是已查看不符合。进头条,滴滴之类的大厂很难吗???!!!投简历投的开始怀疑人生了!希望 可以收到大厂offer” 先来看看网...

推荐9个能让你看一天的网站

分享的这9个保证另你意外的网站,每个都非常实用!非常干货!毫不客气的说,这些网站最少值10万块钱。 利用好这些网站,会让你各方面的技能都得到成长,不说让你走上人生巅峰,但对比现在的你,在眼界、学识、技能方面都有质的飞跃。 一、AIRPANO 传送门:https://www.airpano.com/360photo_list.php 这是一个可以躺在家里,就能环游世界的神奇网站。 世界那么大,绝大多...

大牛都会用的IDEA调试技巧!!!

导读 前天面试了一个985高校的实习生,问了他平时用什么开发工具,他想也没想的说IDEA,于是我抛砖引玉的问了一下IDEA的调试用过吧,你说说怎么设置断点...

月薪22K程序员,打卡迟到10次,收到工资短信一脸懵逼

每家公司为了保证公司员工每天的工作时间,一般都会采用上下班打卡的工作制度,这其实是一个很常见的是,本身也没有什么问题的。正所谓无规矩不成方圆,公司肯定是有公司的规矩,虽然每个员工都很不喜欢这些规矩来束缚我们,但是公司也只是为了能更好的管理员工。但是一家公司如果一成不变的使用打卡制度,而不会去变通管理,也真不一定是好事。 打卡制度特别对于销售部门来说,不但会让公司发展不起来,还很容易丢失员工。但如...

97年世界黑客编程大赛冠军作品(大小仅为16KB),惊艳世界的编程巨作

这是世界编程大赛第一名作品(97年Mekka ’97 4K Intro比赛)汇编语言所写。 整个文件只有4095个字节, 大小仅仅为16KB! 不仅实现了3D动画的效果!还有一段震撼人心的背景音乐!!! 内容无法以言语形容,实在太强大! 下面是代码,具体操作看最后! @echo off more +1 %~s0|debug e100 33 f6 bf 0 20 b5 10 f3 a5...

不要再到处使用 === 了

我们知道现在的开发人员都使用 === 来代替 ==,为什么呢?我在网上看到的大多数教程都认为,要预测 JavaScript 强制转换是如何工作这太复杂了,因此建议总是使用===。这些都...

什么是a站、b站、c站、d站、e站、f站、g站、h站、i站、j站、k站、l站、m站、n站?00后的世界我不懂!

A站 AcFun弹幕视频网,简称“A站”,成立于2007年6月,取意于Anime Comic Fun,是中国大陆第一家弹幕视频网站。A站以视频为载体,逐步发展出基于原生内容二次创作的完整生态,拥有高质量互动弹幕,是中国弹幕文化的发源地;拥有大量超粘性的用户群体,产生输出了金坷垃、鬼畜全明星、我的滑板鞋、小苹果等大量网络流行文化,也是中国二次元文化的发源地。 B站 全称“哔哩哔哩(bilibili...

我真的错了,我被跳槽后的高薪冲昏了头脑...

国内疫情已接近尾声,疫情对生活各个方面造成的影响,就是一场真实的“蝴蝶效应”。“全球最大安全套制造商因疫情停产,已造成一亿个安全套缺口”“口罩印钞机,月入千万的暴富神话”“百程旅行...

终于,月薪过5万了!

来看几个问题想不想月薪超过5万?想不想进入公司架构组?想不想成为项目组的负责人?想不想成为spring的高手,超越99%的对手?那么本文内容是你必须要掌握的。本文主要详解bean的生命...

大厂的 404 页面都长啥样?最后一个笑了...

每天浏览各大网站,难免会碰到404页面啊。你注意过404页面么?猿妹搜罗来了下面这些知名网站的404页面,以供大家欣赏,看看哪个网站更有创意: 正在上传…重新上传取消 腾讯 正在上传…重新上传取消 网易 淘宝 百度 新浪微博 正在上传…重新上传取消 新浪 京东 优酷 腾讯视频 搜...

自从喜欢上了B站这12个UP主,我越来越觉得自己是个废柴了!

不怕告诉你,我自从喜欢上了这12个UP主,哔哩哔哩成为了我手机上最耗电的软件,几乎每天都会看,可是吧,看的越多,我就越觉得自己是个废柴,唉,老天不公啊,不信你看看…… 间接性踌躇满志,持续性混吃等死,都是因为你们……但是,自己的学习力在慢慢变强,这是不容忽视的,推荐给你们! 都说B站是个宝,可是有人不会挖啊,没事,今天咱挖好的送你一箩筐,首先啊,我在B站上最喜欢看这个家伙的视频了,为啥 ,咱撇...

代码注释如此沙雕,会玩还是你们程序员!

某站后端代码被“开源”,同时刷遍全网的,还有代码里的那些神注释。 我们这才知道,原来程序员个个都是段子手;这么多年来,我们也走过了他们的无数套路… 首先,产品经理,是永远永远吐槽不完的!网友的评论也非常扎心,说看这些代码就像在阅读程序员的日记,每一页都写满了对产品经理的恨。 然后,也要发出直击灵魂的质问:你是尊贵的付费大会员吗? 这不禁让人想起之前某音乐app的穷逼Vip,果然,穷逼在哪里都是...

爬虫(101)爬点重口味的

小弟最近在学校无聊的很哪,浏览网页突然看到一张图片,都快流鼻血。。。然后小弟冥思苦想,得干一点有趣的事情python 爬虫库安装https://s.taobao.com/api?_ks...

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