GWT java URL Validator

Does someone k开发者_如何学Pythonnows a function that validate if a url is valid or not purely in GWT java without using any JSNI

---

I am using this one (making use of regular expressions):

private RegExp urlValidator;
private RegExp urlPlusTldValidator;
public boolean isValidUrl(String url, boolean topLevelDomainRequired) {
    if (urlValidator == null || urlPlusTldValidator == null) {
        urlValidator = RegExp.compile("^((ftp|http|https)://[\\w@.\\-\\_]+(:\\d{1,5})?(/[\\w#!:.?+=&%@!\\_\\-/]+)*){1}$");
        urlPlusTldValidator = RegExp.compile("^((ftp|http|https)://[\\w@.\\-\\_]+\\.[a-zA-Z]{2,}(:\\d{1,5})?(/[\\w#!:.?+=&%@!\\_\\-/]+)*){1}$");
    }
    return (topLevelDomainRequired ? urlPlusTldValidator : urlValidator).exec(url) != null;
}

---

org.apache.commons.validator.UrlValidator and static method isValid(String url) might be of help here.

---

You should use regular expression in GWT. Here is similar topics Regex in GWT to match URLs and Regular Expressions and GWT