CODEWITHSUNDEEP
javaregex
Whnunlife
Whnunlife

Reputation: 189

Java - Need some help on a Regex pattern for matching both http and https

I'm struggling with getting my regex pattern to match. Here are my requirements...

Match the following domain ex, (google.com) with both http and https.

I have an array list of various URL's....

http://stackoverflow.com/questions/ask
https://ask.com/search
http://google.com/images
https://google.com/images

This is my Pattern:

final Pattern p = Pattern.compile( "(http:(?!.*google.com).*)" );

However, it's currently returning true for all my url's.

Again, I only want it to return true if http://www.google.com or https://www.google.com matches my current url.

Upvotes: 1

Views: 1736

Answers (6)

dule
dule

Reputation: 18168

    String[] urls = new String[] {
        "http://stackoverflow.com/questions/ask",
        "https://ask.com/search",
        "http://google.com/images",
        "https://google.com/images",
        "http://www.google.com"
    };

    final Pattern p = Pattern.compile( "https?://.*?google\\.com.*?" );

    for (String url : urls) {
        Matcher m = p.matcher(url);
        System.out.println(m.matches());
    }

Output is:

   false
   false
   true
   true
   true

Upvotes: 0

Adam
Adam

Reputation: 36723

How about java.net.URI or URL classes...

try {
    URI url = new URI("https://www.google.com/foo?test=horse");
    System.out.println(url.getScheme()); // https
    System.out.println(url.getHost()); // www.google.com
    System.out.println(url.getPath()); // /foo
    System.out.println(url.getQuery()); // test=horse
} catch (URISyntaxException e) {
    e.printStackTrace();
}

Edit: I used URI because I remember hearing somewhere URL had side effects. Just checked it does, the hashCode() method does DNS lookups. Therefore stick to URI if you just want to re-use the URL parsing functionality... See this question

Upvotes: 1

anubhava
anubhava

Reputation: 785611

Use this:

Pattern.compile("^(https?://(?![^.]*\\.google\\.com)[^/]*)");

Upvotes: 1

Qtax
Qtax

Reputation: 33918

I only want it to return true if http://www.google.com or https://www.google.com matches my current url.

Pattern.compile("(?i)^https?://www\\.google\\.com\\z");

Upvotes: 0

Dave Newton
Dave Newton

Reputation: 160261

How about just .contains("//google.com")? Or if "google.com" is at position seven or eight?

Upvotes: 1

Mārtiņš Briedis
Mārtiņš Briedis

Reputation: 17762

final Pattern p = Pattern.compile( "(https?:(?!.*google.com).*)" );

Upvotes: 0

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