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Difference between revisions of "Specifying Parameters in a URL"

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{{:URL Encoding}}
{{:URL Encoding}}
In some cases, it may be necessary to [http://www.blooberry.com/indexdot/html/topics/urlencoding.htm encode special characters] in order to include them in an argument value. For example:
:{| border="1" cellpadding="5" cellspacing="1"
! Instead of !! align="left"| Use
|-
| & (A&B) || %26 (A%26B)
|-
| space (A B) || %20 (A%20B)
|}

Revision as of 20:24, 29 March 2013

You pass arguments in a URL using query parameters. Those parameters are specified in the form parameterName=value.

A parameter list is appended to a URI after a "?". Multiple parameters are separated by "&", as shown here: 

  https://{domain}/networking/{targetAddress}?parameterName1=value1&parameterName2=value2

For boolean arguments, the value passed can be "1" or "true", "0" or "false".


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:

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