Difference between revisions of "URL Encoding"

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{{Note|<br>When specifying a URL in code, any ''special characters'' (anything other than a letter or number) need to be ''encoded''. For example, a space character is encoded as <tt>%20</tt>. (Browsers typically take care of encoding URLs entered into the address bar--that's why the URL displayed after you visit the page may differ somewhat from the one you entered.) <br>
{{Note|<br>When specifying a URL in code, any ''special characters'' (characters other than letters and numbers) need to be ''encoded''. For example, a space character can be encoded using either <tt>+</tt> or <tt>%20</tt>.
 
(Browsers typically take care of encoding URLs entered into the address bar--so the URL displayed after visiting a page may differ somewhat from the one that was initially entered.)
 
Here are some typical encodings:
{{:Common:URL Encoding Characters}}
 
It can be hard to get be hard to get the encoding right, so it's desirable to use a language library designed for the purpose.<br>
''Learn more:''  
''Learn more:''  
:* [http://www.w3schools.com/tags/ref_urlencode.asp URL Encoding] in HTML
:* [http://www.w3schools.com/tags/ref_urlencode.asp URL Encoding] in HTML
:* [http://www.javascripter.net/faq/escape.htm Encode a URL] in JavaScript
:* [http://www.javascripter.net/faq/escape.htm Encode a URL] in JavaScript
:* [http://docs.oracle.com/javase/6/docs/api/java/net/URLEncoder.html URLEncoder] class for Java}}
:* [http://docs.oracle.com/javase/6/docs/api/java/net/URLEncoder.html URLEncoder] class for Java}}

Latest revision as of 19:51, 21 June 2013

Notepad.png

Note:
When specifying a URL in code, any special characters (characters other than letters and numbers) need to be encoded. For example, a space character can be encoded using either + or %20.

(Browsers typically take care of encoding URLs entered into the address bar--so the URL displayed after visiting a page may differ somewhat from the one that was initially entered.)

Here are some typical encodings:

space
+
%
%20 or +
%2B
%25

So:

Instead of Use

& (A&B)
space (A B)

%26 (A%26B)
%20 (A%20B)


It can be hard to get be hard to get the encoding right, so it's desirable to use a language library designed for the purpose.
Learn more: