Anyone developing a pos application should now consider doing it either in HTML5 and JavaScript or at device level as a native app on an ipad or an android.
The HTML5 route is bar far the best as one app will run on all devices using the browser. There are a few issues such as reading credit cards and printing. Web browsers don't silent print so an applet is needed to fire the printer and thus fire a cash drawer if connected. Their are also hid device card readers that will work in the browser tho not using an ipad.
From an app point of view run all the code and storage on the device as pos needs to be fast and not dependent on a constant connection to the internet.
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完成 ERD 图后，使用 Spring-Roo 进行快速原型设计。
Once you finish the ERD diagram, use Spring-Roo to do the rapid prototyping.
任何开发 pos 应用程序的人现在都应该考虑在 HTML5 和 JavaScript 中进行开发，或者在设备级别将其作为 ipad 或 android 上的本机应用程序进行开发。
HTML5 路线是最好的，因为一个应用程序可以在使用浏览器的所有设备上运行。存在一些问题，例如读取信用卡和打印。 Web 浏览器不会静默打印，因此需要一个小程序来启动打印机，从而启动现金抽屉（如果已连接）。它们也是隐藏设备读卡器，即使不使用 ipad，也可以在浏览器中工作。
从应用程序的角度来看，在设备上运行所有代码和存储，因为 pos 需要快速且不依赖于与互联网的持续连接。
Anyone developing a pos application should now consider doing it either in HTML5 and JavaScript or at device level as a native app on an ipad or an android.
The HTML5 route is bar far the best as one app will run on all devices using the browser. There are a few issues such as reading credit cards and printing. Web browsers don't silent print so an applet is needed to fire the printer and thus fire a cash drawer if connected. Their are also hid device card readers that will work in the browser tho not using an ipad.
From an app point of view run all the code and storage on the device as pos needs to be fast and not dependent on a constant connection to the internet.