创建 Java Applet 指南，无提示打印
我已经创建了一个基于网络的 POS 来接受订单。我的问题是如何创建 Java-Applet；
- 显示 HTML 页面 & a 打印按钮
- 打印订单而不提示（无对话框）
附加信息： 它的工作原理如下。服务员从电脑（POS）上敲下订单，当他们点击打印时，它会检测厨房打印机的IP地址，然后立即打印出订单，无需任何提示。我实际上正在寻找可以帮助我开始的参考/指南。任何建议也会有所帮助。谢谢
Well I have created a web-based POS to take order. My question is how do I create a Java-Applet;
- Shows the HTML page & a Print button
- Print Order without prompting(no dialogue box)
Additional Information : It works like this. The waiter will key the orders from the computer(POS) , when they hit print, it will detect the I.P address of the printer in the kitchen,then print out the orders immediately without prompt. I am actually looking for reference/guide which can help me start on. Any Advise will be helpful as well. Thank you
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出于安全原因，您不能这样做。如果可以的话，当您访问不道德的网站时，小程序可能会因为打印 10 多页“特别优惠”而臭名昭著。
OTOH，如果客户端愿意在小程序启动时接受一个提示，您可以对代码进行数字签名。
You cannot do that for security reasons. If you could, applets would already have become notorious for printing 10+ pages of 'special offers' when you visit unscrupulous web sites.
OTOH, if the client is willing to accept one prompt at applet start-up, you could digitally sign the code.
有一个项目使用 HTML5 进行 HTML 打印，将内容渲染为 PNG 和 Java 以便直接打印，正如原始帖子中所述。该项目称为“qz-print”（以前称为“jzebra”），它提供自签名（免费）和可信签名（收费）的数字签名。
它还使用签名的 JNLP 文件，如 Andrew Thompson 所示。 （谢谢 Andrew，您对 Java 整体的贡献对世界各地的 Java 开发人员来说是一个很大的帮助）。
https://code.google.com/p/jzebra/
There is a project that does HTML printing using HTML5 to render the contents to a PNG and Java to print directly, exactly as described in the original post. This project is called "qz-print" (previously called "jzebra") and it offers the digital signature in both self-signed (free) and trusted-signed (at a premium).
It also uses the signed JNLP files as Andrew Thompson has illustrated. (Thanks Andrew, your contributions to Java as a whole have been a great help to Java developers around the world).
https://code.google.com/p/jzebra/