regular expression - url with parameters

Question

I am trying to make a rule for URL Rewrite 2.0 my internal URL is

http://someserver.net/in40/data/getcase.ashx?type=Good&format=json

("in40" is an application)

I need the following URL to work

http://someserver.net/in40/data/getcase/Good?fmt=json

rule

<match url="^data/getcase/([_0-9a-z-]+)\?fmt=([_0-9a-z-]+)$" />
<action type="Rewrite" url="data/getcase.ashx?type={R:1}&amp;format={R:2}" />

doesn't work

but if I change \?fmt= to /

<match url="^data/getcase/([_0-9a-z-]+)/([_0-9a-z-]+)$" />

then the following URL works fine

http://someserver.net/in40/data/getcase/Good/json

How to make the rewrite rule for

http://someserver.net/in40/data/getcase/Good?fmt=json

I wouldn't have thought you needed the ^ giving the string you are matching is not at the start of the string... — James
– James, Commented Oct 4, 2013 at 14:18
it is start of the string. The base part of the URL is "someserver.net/in40". — Andrey Labodin
– Andrey Labodin, Commented Oct 4, 2013 at 14:25
And, as I said, the ^data/getcase/([_0-9a-z-]+)/([_0-9a-z-]+)$ works fine. (but I tried to remove the ^ symbol :) — Andrey Labodin
– Andrey Labodin, Commented Oct 4, 2013 at 14:27

cheesemacfly · Accepted Answer · 2013-10-07 14:34:25Z

1

The problem is that [_0-9a-z-]+ in your regex doesn't allow Good as it starts with an upper G. One solution would be to make sure the ignoreCase option is turned on for the path.
The second issue is that the query string should be treated in the condition and not in the path. In your case, it would go as follow:

<rule name="My rewrite" stopProcessing="true">
    <match url="^data/getcase/([_0-9a-z-]+)$" ignoreCase="true" />
    <conditions>
        <add input="{QUERY_STRING}" pattern="^fmt=([_0-9a-z-]+)$" />
    </conditions>
    <action type="Rewrite" url="data/getcase.ashx?type={R:1}&amp;format={C:1}" />
</rule>

edited Oct 7, 2013 at 14:34

answered Oct 4, 2013 at 16:00

cheesemacfly

11.8k11 gold badges57 silver badges72 bronze badges

Sign up to request clarification or add additional context in comments.

2 Comments

Andrey Labodin Over a year ago

thank you, the "ignoreCase" param should be there, but it still doesn't work. It looks like UrlRewrite 2.0 ignores the \? part. Because when I change it to \. then everything goes fine....... someserver.net/in40/data/getcase/Good.fmt=json

Andrey Labodin Over a year ago

Thanks, cheesemacfly :) your rule definition works fine. I have added my solution, but I am going to choose your answer. Thanks for your help :)

Andrey Labodin · Accepted Answer · 2013-10-13 10:57:56Z

My previous rule definitions was wrong and URL Rewrite mudule couldn't see the "?" symbol because I didn't have a "conditions" section and I had to include it. And even after that I had wrong "input" parameter in rule definition - {QUERY_STRING}. When the module "sees" the

<add input="{QUERY_STRING}.....

string then it will search for {QUERY_STRING} which is a part of URL right AFTER the "?" symbol :) I have replaced {QUERY_STRING} with {REQUEST_URI} to match entire URL instead The following example works for me.

<rule name="Boo" stopProcessing="true">
  <match url="^(.+)" />
  <conditions>
    <add input="{REQUEST_URI}" pattern="data/getcase/([_0-9A-Za-z-]+)\?fmt=([_0-9A-Za-z-]+)$" ignoreCase="true" />
  </conditions>
  <action type="Rewrite" url="data/getcase.ashx?type={C:1}&amp;format={C:2}" appendQueryString="false" />
</rule>

Marius Schulz · Accepted Answer · 2013-10-07 14:49:01Z

0

The regex engine needs a backslash in front of the question mark to interpret it as a literal rather than the optional quantifier, which is why you'll have to escape the backslash itself: \\? This process is called double-escaping.

When writing regexes in C#, you usually use the @ sign in front of the pattern string so you don't have to double-escape backslashes.

answered Oct 7, 2013 at 14:49

Marius Schulz

16.5k12 gold badges65 silver badges100 bronze badges

Collectives™ on Stack Overflow

regular expression - url with parameters

3 Answers 3

2 Comments

Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

3 Answers 3

2 Comments

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related