CODEWITHSUNDEEP
javaregex
E.S.
E.S.

Reputation: 2841

URI regular expression for Java Problems

I am trying to create a regular expression that will work for the following:

GET://HOSTNAME1234:14159?sim=C:\sim.zip&bif=C:\bif.txt&wpt=C:\wpt.txt Or more simply:

GET :// HOSTNAME1234 : 14159 ? sim = C:\sim.zip & bif = C:\bif.txt & wpt = C:\wpt.txt

With this:

(\w+)://(\w+)(:(\d+)\??)?((\w+)=([\/\.\\:\w]+)&?)*

What I'm hoping to get out is something like this:

0: [0,72] GET://HOSTNAME1234:14159?arg0=C:\sim.zip&arg1=C:\bif.txt&arg2=C:\wpt.txt
1: [0,3] GET
2: [6,18] HOSTNAME1234
3: [18,24] :14159
4: [19,24] 14159
5: [57,72] arg2=C:\wpt.txt
6: [57,61] arg2
7: [62,72] C:\wpt.txt

Where 6 and 7 represent what I want, however I am not seeing "arg0" or "arg1". I assume I am doing something wrong with the + and * commands, but no combination of arrangements seem to work.

I am using this tool to help me: http://www.regexplanet.com/advanced/java/index.html / http://fiddle.re/h9b88

Upvotes: 0

Views: 265

Answers (1)

brandonscript
brandonscript

Reputation: 73024

String to match:

GET://HOSTNAME1234:14159?arg0=C:\sim.zip&arg1=C:\bif.txt&arg2=C:\wpt.txt

Despite that you REALLY should be using a URL parser to do this:

Updated Method (works on full original string)

((\w+):\/\/(\w+):(\d+)\??|([^&]*?)=([^&]*)?)

Working example: http://regex101.com/r/pL2wV9

First Method (works, but requires a loop)

Break the URL up into two parts:

Use (\w+):\/\/(\w+):(\d+)\?(.*$) to break the URL up into: http://regex101.com/r/pQ1vS9

MATCH 1

  1. GET

  2. HOSTNAME1234

  3. 14159

  4. arg0=C:\sim.zip&arg1=C:\bif.txt&arg2=C:\wpt.txt

And then on group 4, use ([^&]*?)(?==)=?([^&]*)? to match the query string once you've captured it, and iterate through it: http://regex101.com/r/bX3uM4

MATCH 1

  1. arg0

  2. C:\sim.zip

MATCH 2

  1. arg1

  2. C:\bif.txt

MATCH 3

  1. arg2

  2. C:\wpt.txt

Disclaimer: This is a really bad idea, and while I wanted to know if I could pull it off, using the URL parser is a much faster, much more accurate route.

Upvotes: 1

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