访问INPUT TYPE =＆QUOT;文件＆QUOT;从Java小程序的完整路径 [英] Accessing input type="file" full path from a Java applet

问题描述

有可能从使用netscape.javascript JSObject API一个applet访问HTML DOM。
不过，如果我查询在某些浏览器中输入类型=文件的值，（歌剧）我得到一个完整路径选定的文件，但其他浏览器（火狐，Chrome）只是一个文件名的不路径的

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.

是否有可能，有一个HTML输入类型=文件，找出完整路径从Java小程序在它选择的文件？

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?

为什么我烦的原因：签名的Applet可以访问文件系统和浏览器文件选择器是不是更好了大量的Java Swing有一个

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

您不能。你通过HTML / JS（和浏览器）的安全限制的约束。据官方统计，输入类型=文件的值应仅返回文件名，绝不文件路径。然而，我很惊讶，歌剧返回的完整路径，即因为MSIE是我知道是谁做的唯一的一个。

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，正如你已经运行的小程序，你为什么不只是利用自己的能力？您可以使用 Swing的的JFileChooser 来选择一个文件，正是因为你可以用HTML做输入类型=文件。

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".

这篇关于访问INPUT TYPE =＆QUOT;文件＆QUOT;从Java小程序的完整路径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！