访问输入类型=“文件”来自Java小程序的完整路径 [英] Accessing input type="file" full path from a Java applet

问题描述

可以使用netscape.javascript JSObject API从小程序访问HTML DOM。
但是，如果我查询输入type =file的值，在某些浏览器（Opera）上，我会获得一个选定文件的完整路径，但在其他浏览器（Firefox，Chrome）上只有一个文件名没有路径。

It is possible to access HTML DOM from an applet using netscape.javascript JSObject API. However, if I query a value of a input type="file", on some browsers (Opera) I get a full path to a selected file, but on other browsers (Firefox, Chrome) just a file name without path.

可以使用HTML输入类型=文件找出其中选择的文件的完整路径来自Java小程序？

Is it possible, having an HTML input type="file", to figure out the full path to the file selected in it from a Java applet?

我打扰的原因是：签名的小程序可以访问文件系统，浏览器的文件选择器比Java swing更好。 >

The reason why I bother: signed applets can access file system, and browsers' file selectors are a lot nicer than Java swing one.

推荐答案

你不能。您受到HTML / JS（和浏览器）安全限制的限制。正式来说， input type =file的值只能返回文件名，而不是文件路径。我感到惊讶的是Opera返回了完整的路径，即因为MSIE是唯一一个知道谁是谁的人。

You cannot. You're restricted by HTML/JS (and browser) security limitations. Officially, the value of input type="file" should only return the filename, never the filepath. I am however surprised that Opera returns the full path, namely because MSIE was the only one I knew of who did it.

但是，当你已经在运行一个applet，你为什么不使用它的功能？您可以使用 Swing的 JFileChooser 选择一个文件，与HTML input type =file完全相同。

But as you're already running an applet, why don't you just make use of its capabilities? You can use Swing's JFileChooser to select a file, exactly as you can do with HTML input type="file".

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