Datalogic Falcon X3-条形码扫描仪 [英] Datalogic Falcon X3 - Barcode Scanner
问题描述
我刚刚获得了Datalogic Falcon X3 +条形码设备，并被询问是否可以制作一个Javascript应用程序来读取条形码并将其通过sql发送到数据库.
I just got the Datalogic Falcon X3+ Barcode Device and got asked, if I could make a javascript application which reads the barcode and send it via sql to a database.
由于我不是很喜欢Visual Studio 2008中的C ++/C#和Windows SDK，所以我不知道该如何开始.在datalogic的主页上，我找到了一些用JavaScript编写的ActiveX API示例，用于扫描(Memor X3 SDK).
Since I'm not really into C++/C# and the Windows SDK in Visual Studio 2008, I don't know exactly how to start. On the homepage of datalogic I found some ActiveX API examples which are written in javascript for scanning (Memor X3 SDK).
5个文件:
- BARCODE_Identifiers.js
- SCAN_PARAMENTERS.js
- jsBarcodeIdDemo.htm
- jsScanDemo.htm
- jsScanSetupDemo.htm
var BARCODE_ID_CODE_UNDEFINED=-1;
var BARCODE_ID_CODE_25_CIP_HR=0;
var BARCODE_ID_CODE_25_INTERLEAVED=1;
var BARCODE_ID_CODE_25_INDUSTRIAL=2;
SCAN_PARAMETERS.js-摘录
var SCAN_PARAM_WAVE_FILE=67108864;
var SCAN_PARAM_TIMEOUT=67108865;
var SCAN_PARAM_BEEPER_DURATION=67108866;
var SCAN_PARAM_KEYBOARD_EMULATION=67108871;
jsScanDemo.htm-摘录
//ScanEnable...
function ScanEnable(sAction)
{
if (sAction=="ENABLE")
{
DatalogicScanner1.bScanEnabled = true;
//ENABLE Continuous Mode PARAM ONLY IF READER == PORT REDIRECTOR
var nReaderType = oScannerSetup.getReaderIdentifier();
if (nReaderType==SE_READER_PR_CLASS_ID)
{
oScannerSetup.setParameter(SCAN_PARAM_CONTINUOUS_MODE,SCAN_PARAM_ENABLE);
}
}
else
{
//DISABLE Continuous Mode PARAM ONLY IF READER == PORT REDIRECTOR
var nReaderType = oScannerSetup.getReaderIdentifier();
if (nReaderType==SE_READER_PR_CLASS_ID)
{
oScannerSetup.setParameter(SCAN_PARAM_CONTINUOUS_MODE,SCAN_PARAM_DISABLE);
}
DatalogicScanner1.bScanEnabled = false;
}
if (DatalogicScanner1.bScanEnabled == true)
{
btnSoftTrigger.disabled = false;
return("DISABLE");
}
btnSoftTrigger.disabled = true;
return("ENABLE");
}
初始情况
使用Falcon X3 +以任何文本形式扫描条形码时，它不会将解码后的条形码作为文本发送.就是说，我无法通过按键事件来获取条形码.Falcon的控制面板中有一个名为解码"的应用程序.仅在此应用程序中，您才能看到解码后的数据.
The initial situation
When scanning a barcode with the Falcon X3+ being in any kind of text form, it doesn't send the decoded barcode as text. Means, that I can't grab the barcode with a keypress event. The Falcon has an application called "decoding" in it's control panel. Only in this application you can see the decoded data.
我找不到可以将模式切换为 keyboard_emulation = true 或类似内容的设置.
I couldn't find a setting where you can switch modes into keyboard_emulation = true, or something similar.
我刚刚尝试的是将示例javascript放到Web服务器上，然后使用Falcon X3 +(包含在Windows CE 6.5中)的Internet Explorer访问该.htm文件.但是这里我有同样的问题-没有解码的数据传输.
What I just tried is putting the example javascript onto a web server and then visiting that .htm-file with the Internet Explorer of the Falcon X3+ (which is included on the Windows CE 6.5). But here I have the same problem - there is no decoded data transmitted.
有没有人已经可以使用datalogic falcon x3的简单工具(甚至基于javascript?)?
Is there anyone out there who already has something simple for the datalogic falcon x3 (maybe even based on javascript?) which I could work with?
谢谢！
推荐答案
尽管这是一个古老的问题，虽然没有特别明确地提出，但仍然没有公认的答案(截至2020年1月28日).我提出了以下非常简单的解决方案，并在代码后讨论了一些重要的警告:
Although this is an old question, and not particularly well presented, it still has no accepted answer (as of 2020-01-28). I've come up with the followihg remarkably simple solution, with a couple of important caveats discussed after the code:
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<title>Scanner Test</title>
<meta http-equiv="content-type" content="text/html; charset=utf-8">
</head>
<body>
<p>The following form accepts input from a barcode scanner.</p>
<hr>
<form method='post' action='scan.php'>
<table>
<tr>
<td>Scanner Input:</td>
<td><input id='scanval' name='scanval' value=''></td>
</tr>
</table>
<input type='submit' name='submit' value='Submit'>
</form>
<script>
window.onload = function() { document.getElementById('scanval').focus(); }
</script>
</body>
</html>
自然，这在所有主流浏览器中都可以正常工作.诀窍是使其能够在Windows CE设备(在我的情况下为Datalogic Falcon X3 +条码扫描器)的IE浏览器中工作.要求将焦点放在页面加载时的输入字段上，以便用户可以立即开始扫描条形码，而无需单击或点击等.
Naturally, this works fine within all major browsers. The trick was getting it to work in the IE browser on a Windows CE device (in my case, a Datalogic Falcon X3+ barcode scanner). The requirement is for the focus to be on the input field at page load, so that a user can immediately start scanning bar codes without having to click or tap, etc.
当然，有很多方法可以设置焦点，但是在此特定环境中似乎唯一可行的方法是使用 window.onload ，并在之后关闭</form> 标记.
Of course, there are many ways to set the focus, but the only way that seemed to work in this specific environment was to use window.onload, and have it appear after the closing </form> tag.
我们希望大多数浏览器在按Enter/Return键时会自动提交表单.幸运的是，这可以在Windows CE上的IE中使用.因此，严格来说，我们不需要表单上的Submit按钮.扫描程序显然包括< cr> 或< cr< lf> 来终止每次扫描，因此该表单是自动提交的.
We expect most browsers to submit a form automatically when the enter/return key is pressed. Fortunately this works in IE on Windows CE. So, strictly speaking, we don't need the Submit button on the form. The scanner apparently includes either a <cr> or a <cr><lf> to terminate each scan, so the form is automatically submitted.
但是...奇怪的是，当在此设备上调用自动提交时， submit 输入值不会传输到服务器.我在服务器上使用PHP处理传入的表单数据，并且从扫描仪接收到的 $ _ POST 数据结构仅包含 scanval 输入字段值，而不包含提交值.
HOWEVER... oddly, when auto-submit is invoked on this device, the submit input value is not transmitted to the server. I use PHP on the server to handle the incoming form data, and the $_POST data structure received from the scanner contains only the scanval input field value, NOT the submit value.
正如人们可能期望的那样，我通常会寻找 submit 按钮输入，以确认表单已成功发布到服务器.确定扫描器仅发送 scanval 而不发送其他任何内容，花了一段时间，并且抓了很多头.
As one might expect, I normally look for the submit button input as confirmation that a form has been successfully posted to the server. It took a while, and a lot of head scratching, to determine that the scanner was sending only the scanval and nothing else.
最后，Windows CE在IE浏览器的设置中有一个 User Agent 配置选项，允许您从以下选项中进行选择: Windows CE ， Pocket PC或与Windows XP相同.我发现将它设置为 Windows XP 时似乎效果最好.那不是很明显.
Finally, there is a User Agent configuration option within the IE browser's settings in Windows CE that allows you to choose from among: Windows CE, Pocket PC, or Same as Windows XP. I found that it seems to work best when set to Windows XP. That was not obvious.
无论如何，我希望这将来可能对其他人有所帮助！
Anyway, I hope this maybe helps someone else in the future!
这篇关于Datalogic Falcon X3-条形码扫描仪的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
