C # obtain the URL

Source: Internet
Author: User

You need to extract usable URLs from some irregular addresses;

C # Regular Expression

Code String firsturl = "http://www.herosoft.com, http://www.heropc.com.cn /";
// Create a regular match
String zhengze = @ "([w *] +.) {2,} ([w *] + )";
Match m = Regex. Match (firsturl, zhengze );
Firsturl = "http: //" + m. Value;

 

HTTP is not set because HTPP is not added when some URLs are stored in the database;

Therefore, HTTP is not added for regular expressions. Add the code manually.

 

Parse the Regular Expression

([W *] +.) {2,} ([w *] +)

W is a character,

* Indicates that the number of occurrences is unlimited, 0, and unlimited.

+ Indicates that at least once appears, and there is no upper limit

. Match a "."

{2,} indicates that this expression must be repeated at least twice.

The following is similar, but "." is not added.

The result is: www.herosoft.com.

Add HTTP ://

Related Article

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

  • Sales Support

    1 on 1 presale consultation

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.