无效的URL编码字符串 [英] URL Encoding Strings that aren't valid URIs

问题描述

我不确定我是否完全理解URI对象才能正确执行此操作.我希望能够将字符串转换为url编码的字符串.例如，我有一个servlet充当文件处理程序，我需要在标题中指定文件名-

I'm not sure I understand the URI object completely to do this properly. I want to be able to convert a string into a url-encoded string. For example, I have a servlet acting as a file handler and I need to specify the file name in the header -

response.setHeader("Content-disposition", "attachment;filename=" + new URI(filename).toUrl());

如预期的那样，我得到一个URISyntaxException，因为我正在编码的字符串不是正确的URI形式.

As expected, I get a URISyntaxException because the string I'm encoding isn't in proper URI form.

如何编码字符串而不是URL?

How can I encode strings instead of URLs?

使用折旧的URLEncoder无法获得所需的结果，因为它用"+"而不是％20"代替了".

I can't get the results I want using the depreciated URLEncoder because it replaces " " with "+" instead of "%20".

提前谢谢！

推荐答案

您可以使用URLEncoder并将所有+替换为%20.

You could use URLEncoder and simply replace all + with %20.

此外，不推荐使用URLEncoder.encode(String s, String enc).

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