是否可以通过javascript访问本地文件？ [英] Is it possible to access local file via javascript?

问题描述

    if (window.ActiveXObject) {
        try {
            var fso = new ActiveXObject("Scripting.FileSystemObject"); 
            fso.CopyFile("C:\\Program Files\\GM4IE\\scripts\\source.txt","C:\\Program Files\\GM4IE\\scripts\\target.txt", 1);
            fso = null;
            }
            catch (e) {
            alert (e.message);
            }
    }

我收到错误：
自动化服务器无法在我创建ActiveXObject实例的行上创建对象。

我知道使用javascript访问硬盘驱动器数据被认为非常糟糕，但我只需要它。 >
我正在使用 IE8，Greasemonkey4IE 运行我的javascript。

I am getting error : "Automation server can not create object" on the line where I am creating ActiveXObject instance.
I understand that it's considered very bad to access hard-drive data using javascript but I just need it.
I am using IE8 , Greasemonkey4IE to run my javascript.

谢谢，

Mohit < br>

Thank you,
Mohit

** * ** * ** * ** * ** * ** * ** * 的** * ** * ***

******************************

    function WriteFile()
    {
       var fso  = new ActiveXObject("Scripting.FileSystemObject");
       fso.CopyFile("C:\\source.txt","C:\\target.txt", 1);
    }

我将上面的代码放在一个简单的HTML页面中，它完美无缺。 >
http://www.c-point.com/JavaScript/ articles / file_access_with_JavaScript.htm

你可以在上面提到的位置找到类似的代码。

我修改了一下，很难。

但是当我试图通过 GreaseMonkey4IE 运行它时，它只是吐出我之前指定的相同错误。

I've put the above code inside a simple HTML page and it worked perfect.
http://www.c-point.com/JavaScript/articles/file_access_with_JavaScript.htm
You can find the similar code on above mentioned location.
I modified it a bit, tough.
But when I am trying to run it through GreaseMonkey4IE it simply spitting the same error I specified earlier.

我做过这些人，但非常感谢您的快速和有用的回复。

我所做的只是：

转到工具> Internet选项>安全性>自定义级别

在ActiveX控件和插件下，选择启用初始化和脚本未标记为安全的ActiveX控件。

I did it guys, but thanks a lot for your quick and helpful replies.
All I did is :
Go to Tools > Internet options > Security > Custom Level
Under the ActiveX controls and plug-ins, select Enable for Initializing and Script ActiveX controls not marked as safe.

推荐答案

使用本机JavaScript，不，通常不可能访问本地文件。使用插件和扩展程序（如ActiveX，Flash或Java）可以解决此规则，通常会遇到一些困难。

Using native JavaScript, no, it is not generally possible to access a local file. Using plugins and extensions like ActiveX, Flash, or Java you can get around this rule, generally with some difficulty.

对于此一般规则的某些浏览器和操作系统特定的例外情况，你可能想看看这里：

For some browser and OS specific exceptions to this general rule, you might want to have a look here:

使用javascript进行本地文件访问

请注意，截至2012年底， FileReader API ，并提供本机JavaScript机制来访问用户提名的 （通过输入元素或将它们放入浏览器中）。

Note that as of late 2012, the FileReader API has been supported in all major browsers and provides a native JavaScript mechanism for accessing local files that the user nominates (via an input element or by dropping them into the browser).

这仍然不能用于按名称/路径访问任意文件，如原始问题中的示例所示。

This still cannot be used to access an arbitrary file by name/path as in the examples in the original question.

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