public class UrlValidator extends java.lang.Object
URL Validation routines.
Behavior of validation is modified by passing in options:Originally based in on php script by Debbie Dyer, validation.php v1.2b, Date: 03/07/02, http://javascript.internet.com. However, this validation now bears little resemblance to the php original.
Example of usage:
Construct a UrlValidator with valid schemes of "http", and "https".
String[] schemes = {"http","https"}.
UrlValidator urlValidator = new UrlValidator(schemes);
if (urlValidator.isValid("ftp://foo.bar.com/")) {
System.out.println("url is valid");
} else {
System.out.println("url is invalid");
}
prints "url is invalid"
If instead the default constructor is used.
UrlValidator urlValidator = new UrlValidator();
if (urlValidator.isValid("ftp://foo.bar.com/")) {
System.out.println("url is valid");
} else {
System.out.println("url is invalid");
}
prints out "url is valid"
| Modifiers | Name | Description |
|---|---|---|
static long |
ALLOW_2_SLASHES |
Allow two slashes in the path component of the URL. |
static long |
ALLOW_ALL_SCHEMES |
Allows all validly formatted schemes to pass validation instead of supplying a set of valid schemes. |
static long |
NO_FRAGMENTS |
Enabling this options disallows any URL fragments. |
| Constructor and description |
|---|
UrlValidator
()Create a UrlValidator with default properties. |
UrlValidator
(java.lang.String[] schemes)Behavior of validation is modified by passing in several strings options: |
UrlValidator
(long options)Initialize a UrlValidator with the given validation options. |
UrlValidator
(java.lang.String[] schemes, long options)Behavior of validation is modified by passing in options: |
UrlValidator
(RegexValidator authorityValidator, long options)Initialize a UrlValidator with the given validation options. |
UrlValidator
(java.lang.String[] schemes, RegexValidator authorityValidator, long options)Customizable constructor. |
| Type | Name and description |
|---|---|
protected int |
countToken(java.lang.String token, java.lang.String target)Returns the number of times the token appears in the target. |
static UrlValidator |
getInstance()Returns the singleton instance of this class with default schemes and options. |
boolean |
isValid(java.lang.String value) |
protected boolean |
isValidAuthority(java.lang.String authority)Returns true if the authority is properly formatted. |
protected boolean |
isValidFragment(java.lang.String fragment)Returns true if the given fragment is null or fragments are allowed. |
protected boolean |
isValidPath(java.lang.String path)Returns true if the path is valid. |
protected boolean |
isValidQuery(java.lang.String query)Returns true if the query is null or it's a properly formatted query string. |
protected boolean |
isValidScheme(java.lang.String scheme)Validate scheme. |
| Methods inherited from class | Name |
|---|---|
class java.lang.Object |
java.lang.Object#wait(long, int), java.lang.Object#wait(long), java.lang.Object#wait(), java.lang.Object#equals(java.lang.Object), java.lang.Object#toString(), java.lang.Object#hashCode(), java.lang.Object#getClass(), java.lang.Object#notify(), java.lang.Object#notifyAll() |
Allow two slashes in the path component of the URL.
Allows all validly formatted schemes to pass validation instead of supplying a set of valid schemes.
Enabling this options disallows any URL fragments.
Create a UrlValidator with default properties.
Behavior of validation is modified by passing in several strings options:
schemes - Pass in one or more url schemes to consider valid, passing in
a null will default to "http,https,ftp" being valid.
If a non-null schemes is specified then all valid schemes must
be specified. Setting the ALLOW_ALL_SCHEMES option will
ignore the contents of schemes.Initialize a UrlValidator with the given validation options.
options - The options should be set using the public constants declared in
this class. To set multiple options you simply add them together. For example,
ALLOW_2_SLASHES + NO_FRAGMENTS enables both of those options.Behavior of validation is modified by passing in options:
schemes - The set of valid schemes.options - The options should be set using the public constants declared in
this class. To set multiple options you simply add them together. For example,
ALLOW_2_SLASHES + NO_FRAGMENTS enables both of those options.Initialize a UrlValidator with the given validation options.
authorityValidator - Regular expression validator used to validate the authority partoptions - Validation options. Set using the public constants of this class.
To set multiple options, simply add them together:
ALLOW_2_SLASHES + NO_FRAGMENTS
Customizable constructor. Validation behavior is modifed by passing in options.
schemes - the set of valid schemesauthorityValidator - Regular expression validator used to validate the authority partoptions - Validation options. Set using the public constants of this class.
To set multiple options, simply add them together:
ALLOW_2_SLASHES + NO_FRAGMENTS
Returns the number of times the token appears in the target.
token - Token value to be counted.target - Target value to count tokens in.Returns the singleton instance of this class with default schemes and options.
Checks if a field has a valid url address.
value - The value validation is being performed on. A null
value is considered invalid. Returns true if the authority is properly formatted. An authority is the combination
of hostname and port. A null authority value is considered invalid.
authority - Authority value to validate.Returns true if the given fragment is null or fragments are allowed.
fragment - Fragment value to validate. Returns true if the path is valid. A null value is considered invalid.
path - Path value to validate.Returns true if the query is null or it's a properly formatted query string.
query - Query value to validate.Validate scheme. If schemes[] was initialized to a non null, then only those scheme's are allowed. Note this is slightly different than for the constructor.
scheme - The scheme to validate. A null value is considered
invalid.