org.springframework.web.util

Class UriTemplate

java.lang.Object

org.springframework.web.util.UriTemplate

All Implemented Interfaces:

Serializable

public class UriTemplate
extends Object
implements Serializable

Representation of a URI template that can be expanded with URI variables via expand(Map), expand(Object[]), or matched to a URL via match(String). This class is designed to be thread-safe and reusable, and allows any number of expand or match calls.

Note: this class uses UriComponentsBuilder internally to expand URI templates, and is merely a shortcut for already prepared URI templates. For more dynamic preparation and extra flexibility, e.g. around URI encoding, consider using UriComponentsBuilder or the higher level DefaultUriBuilderFactory which adds several encoding modes on top of UriComponentsBuilder. See the reference docs for further details.

Since:

3.0

Author:

Arjen Poutsma, Juergen Hoeller, Rossen Stoyanchev

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
UriTemplate(String uriTemplate) Construct a new UriTemplate with the given URI String.

Method Summary

Modifier and Type	Method and Description
URI	expand(Map<String,?> uriVariables) Given the Map of variables, expands this template into a URI.
URI	expand(Object... uriVariableValues) Given an array of variables, expand this template into a full URI.
List<String>	getVariableNames() Return the names of the variables in the template, in order.
Map<String,String>	match(String uri) Match the given URI to a map of variable values.
boolean	matches(String uri) Indicate whether the given URI matches this template.
String	toString()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

UriTemplate

public UriTemplate(String uriTemplate)

Construct a new UriTemplate with the given URI String.

Parameters:

uriTemplate - the URI template string

Method Detail

getVariableNames

public List<String> getVariableNames()

Return the names of the variables in the template, in order.

Returns:

the template variable names

expand

public URI expand(Map<String,?> uriVariables)

Given the Map of variables, expands this template into a URI. The Map keys represent variable names, the Map values variable values. The order of variables is not significant.

Example:

 UriTemplate template = new UriTemplate("https://example.com/hotels/{hotel}/bookings/{booking}");
 Map<String, String> uriVariables = new HashMap<String, String>();
 uriVariables.put("booking", "42");
 uriVariables.put("hotel", "Rest & Relax");
 System.out.println(template.expand(uriVariables));
 

will print:

https://example.com/hotels/Rest%20%26%20Relax/bookings/42

Parameters:

uriVariables - the map of URI variables

Returns:

the expanded URI

Throws:

IllegalArgumentException - if uriVariables is null; or if it does not contain values for all the variable names

expand

public URI expand(Object... uriVariableValues)

Given an array of variables, expand this template into a full URI. The array represent variable values. The order of variables is significant.

Example:

 UriTemplate template = new UriTemplate("https://example.com/hotels/{hotel}/bookings/{booking}");
 System.out.println(template.expand("Rest & Relax", 42));
 

will print:

https://example.com/hotels/Rest%20%26%20Relax/bookings/42

Parameters:

uriVariableValues - the array of URI variables

Returns:

the expanded URI

Throws:

IllegalArgumentException - if uriVariables is null or if it does not contain sufficient variables

matches

public boolean matches(String uri)

Indicate whether the given URI matches this template.

Parameters:

uri - the URI to match to

Returns:

true if it matches; false otherwise

match

public Map<String,String> match(String uri)

Match the given URI to a map of variable values. Keys in the returned map are variable names, values are variable values, as occurred in the given URI.

Example:

 UriTemplate template = new UriTemplate("https://example.com/hotels/{hotel}/bookings/{booking}");
 System.out.println(template.match("https://example.com/hotels/1/bookings/42"));
 

will print:

{hotel=1, booking=42}

Parameters:

uri - the URI to match to

Returns:

a map of variable values

toString

public String toString()

Overrides:

toString in class Object