javascript文件下载 [英] javascript file download

问题描述

我需要下载一个文件（test.xml）并允许/提示用户在点击下载按钮时保存文件。该文件位于URLhttp：//localhost/test/test.xml。

I need to download a file (test.xml) and allow/prompt user to save the file on click on download button. The file resides in url "http://localhost/test/test.xml" .

我添加了html代码

<input type=button value="Download" onclick='javascript:download()/>

和javascript代码是

and javascript code is

function download() {
   var url = "http://localhost/test/test.xml";
       window.open(url, 'Download');
}

但这会在新窗口中打开页面。如何提示下载并保存文件。任何输入都会有所帮助。谢谢

But this opens the page in new window. How do I prompt to download and save the file. Any inputs will be of help. Thanks

推荐答案

使用初始代码，如果您有权访问后端，请求xml时，添加以下标题它：

Using you inital code, if you have access to the backend, when the xml is requested, add the following header with it:

Content-disposition: attachment; filename=test.xml;

另一种方法是使用xmlhttprequest获取文件，然后使用flash插件保存它。我已经使用过这种方法，可以在这里找到flash swf。

Another route would be to use xmlhttprequest to get the file, then use a flash plugin to save it. I've used this method a bit, and the flash swf can be found here

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