URL validation checks if a given text is a URL or not.
URL validation checks if a given text is a URL or not.
Such a check is often performed when a user has to enter a URL on a web form, to ensure that the entered text corresponds to a URL.
Questions tagged [url-validation]
101 questions
132
votes
12 answers
How to check if URL is valid in Android
Is there a good way to avoid the "host is not resolved" error that crashes an app? Some sort of a way to try connecting to a host ( like a URL ) and see if it's even valid?
kidalex
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129
votes
14 answers
C# How can I check if a URL exists/is valid?
I am making a simple program in visual c# 2005 that looks up a stock symbol on Yahoo! Finance, downloads the historical data, and then plots the price history for the specified ticker symbol.
I know the exact URL that I need to acquire the data, and…
Daniel Waltrip
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34
votes
12 answers
Dart / Flutter - Validating a string for URL
I'm trying to create a system in which I can validate a string to check if it's a url or not. (https://www.google.com/)
I found the flutter package validator but this isn't dart 2 compatible, so won't be compatible with my code.
Similarly named, I…
Jake
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29
votes
8 answers
How to quickly check if URL server is available
I have a URL in the form
http://www.mywebsite.com/util/conv?a=1&from=%s&to=%s
And want to check if it is available.
The links redirect me on a bad request page if I try to open these with a browser, however via code I can get the data that I…
AndreaF
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22
votes
8 answers
How can I check if a URL exists with Django’s validators?
I want to check in django if a URL exists and if it does I want to show something on screen, i.e.:
if URL_THAT_POINTS_TO_SOME_PDF exists
SHOW_SOMETHING
Daniel Kivatinos
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19
votes
2 answers
is URL valid or not
Possible Duplicate:
what is the best way to check if a Url exists in PHP ?`
I'm looking for a function that returns TRUE or FALSE in php, either the URL is valid or not.
isValidURL($url); I think that simple... That would take into count all kind…
james
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19
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5 answers
Validating URLs in Python
I've been trying to figure out what the best way to validate a URL is (specifically in Python) but haven't really been able to find an answer. It seems like there isn't one known way to validate a URL, and it depends on what URLs you think you may…
mp94
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15
votes
1 answer
UrlValidator is not working for localhost
I'm facing an issue that i'm using UrlValidator in my code.
UrlValidator urlValidator = UrlValidator.getInstance();
if(urlValidator.isValid(url)) {
throw new IllegalArgumentException( url + "not valid");
}
where url i'm passing is…
Little bird
- 1,106
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11
votes
7 answers
Why UrlValidator do not work for some of my Urls?
String[] schemes = {"http","https"};
UrlValidator urlValidator = new UrlValidator(schemes, UrlValidator.ALLOW_ALL_SCHEMES);
System.out.println(urlValidator.isValid(myUrl));
the following URL says, invalid. Any one know why is that. the localnet is…
dinesh707
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9
votes
1 answer
django URLValidator produced bogus errors
I'm using the Django URLValidator in the following way in a form:
def clean_url(self):
validate = URLValidator(verify_exists=True)
url = self.cleaned_data.get('url')
try:
logger.info(url)
validate(url)
except…
KVISH
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6
votes
3 answers
prevent xss attack via url( PHP)
I am trying to avoid XSS attack via url
url :http://example.com/onlineArcNew/html/terms_conditions_1.php/%22ns=%22alert%280x0000DC%29
I have…
Rajeev Ranjan
- 4,152
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5
votes
2 answers
Yii Framework: Specifying defaultScheme in URL Validator
I'm sure this is straightforward, but I can't figure it out. I'm trying to set a defaultScheme to the Yii URL validator in my model, so that it accepts addresses like www.something.com as well as http://www.something.com.
To do this, I'm using the…
Donnie Thomas
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5
votes
1 answer
how can I validate URL(domain) allowing wildcard(*, %) in java
I want to check validate URL allowing wildcard in java.
I found some nice examples about validating URL in java (REGEX, urlValidator), but those aren't providing the wildcard character.
Here's what I'm practicing:
CODE(urlValidator)
public void…
qumm
- 137
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5
votes
2 answers
(rails) validating URL help with regexp
i'm using the following to verify if a URL is formatted validly:
validates_format_of :website, :with => URI::regexp(%w(http https))
however, it doesn't work when the url doesn't start with http:// or https://. Is there some similar way to validate…
Tony Stark
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5
votes
2 answers
URL validation works fine but keep connection and restrict any further requests
public class UrlVarificationTask extends AsyncTask {
private String url;
private UrlVarificationDelegate delegate;
private HttpURLConnection huc;
public UrlVarificationTask(String url, UrlVarificationDelegate…
Mohd Mufiz
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