如何从javascript中的FTP服务器读取xml

Question

I am new to Javascript. Please tell me that how to retrieve and read XML file which is placed on ftp server in Javascript. Javascript only speaks HTTP and WebSockets (on newer browsers), and not FTP

Answer 1

If you are restricted to using client-side JS, it's not possible. It is possible with NodeJS , though.

Answer 2

If you are speaking about client side Javascript (the one that is in the browser), then this is not possible (it can understand only HTTP protocol and with the rise of HTML5 also WebSockets ). FTP is completely another protocol and hence this is not possible.

Think about it this way: your JS is stored in your browser. So the whole code that will connect to your FTP and do something there is exposed to everyone. In order to connect to FTP you need to provide your credentials (your username and password). This means that everyone who wants to get them can get them. This is not nice :-).

As I understand, the thing you want to achieve - user does something on your site (click a button) and he can download the file from the ftp. In this case I would do something like this. On click I will make an ajax call or some sort of redirect ( window.open('http://yourserver/getFile.php'); ) And the script in getFile.php (php does not matter here - this is any server side script python, asp, ...) connects to your FTP server and does whatever you want.