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SPR-5774 - UriTemplate not matching querystrings

This commit is contained in:
Arjen Poutsma 2009-05-26 12:25:22 +00:00
parent 6cc33fc609
commit 9f4480a1b8
2 changed files with 96 additions and 69 deletions
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122
org.springframework.web/src/main/java/org/springframework/web/util/UriTemplate.java
View File

@ -29,37 +29,31 @@ import java.util.regex.Pattern;
import org.springframework.util.Assert;
/**
* Represents a URI template. An URI template is a URI-like String that contained variables
* marked of in braces (<code>{</code>, <code>}</code>), which can be expanded to produce a URI.
* <p>See {@link #expand(Map)}, {@link #expand(String[])}, and {@link #match(String)} for example usages.
* Represents a URI template. An URI template is a URI-like String that contained variables marked of in braces
* (<code>{</code>, <code>}</code>), which can be expanded to produce a URI. <p>See {@link #expand(Map)}, {@link
* #expand(String[])}, and {@link #match(String)} for example usages.
*
* @author Arjen Poutsma
* @since 3.0
* @see <a href="http://bitworking.org/projects/URI-Templates/">URI Templates</a>
* @since 3.0
*/
public class UriTemplate {
/**
* Captures URI template variable names.
*/
/** Captures URI template variable names. */
private static final Pattern NAMES_PATTERN = Pattern.compile("\\{([^/]+?)\\}");
/**
* Replaces template variables in the URI template.
*/
/** Replaces template variables in the URI template. */
private static final String VALUE_REGEX = "(.*)";
private final List<String> variableNames;
private final Pattern matchPattern;
private final String uriTemplate;
/**
* Construct a new {@link UriTemplate} with the given URI String.
*
* @param uriTemplate the URI template string
*/
public UriTemplate(String uriTemplate) {
@ -69,9 +63,9 @@ public class UriTemplate {
this.matchPattern = parser.getMatchPattern();
}
/**
* Return the names of the variables in the template, in order.
*
* @return the template variable names
*/
public final List<String> getVariableNames() {
@ -79,10 +73,8 @@ public class UriTemplate {
}
/**
* 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.
* <p>Example:
* 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. <p>Example:
* <pre>
* UriTemplate template = new UriTemplate("http://example.com/hotels/{hotel}/bookings/{booking}");
* Map&lt;String, String&gt; uriVariables = new HashMap&lt;String, String&gt;();
@ -91,10 +83,11 @@ public class UriTemplate {
* System.out.println(template.expand(uriVariables));
* </pre>
* will print: <blockquote><code>http://example.com/hotels/1/bookings/42</code></blockquote>
*
* @param uriVariables the map of URI variables
* @return the expanded URI
* @throws IllegalArgumentException if <code>uriVariables</code> is <code>null</code>;
* or if it does not contain values for all the variable names
* @throws IllegalArgumentException if <code>uriVariables</code> is <code>null</code>; or if it does not contain values
* for all the variable names
*/
public URI expand(Map<String, String> uriVariables) {
Assert.notNull(uriVariables, "'uriVariables' must not be null");
@ -110,25 +103,22 @@ public class UriTemplate {
}
/**
* Given an array of variables, expand this template into a full URI.
* The array represent variable values. The order of variables is significant.
* <p>Example:
* <pre class="code>
* UriTemplate template = new UriTemplate("http://example.com/hotels/{hotel}/bookings/{booking}");
* System.out.println(template.expand("1", "42));
* </pre>
* will print: <blockquote><code>http://example.com/hotels/1/bookings/42</code></blockquote>
* Given an array of variables, expand this template into a full URI. The array represent variable values. The order of
* variables is significant. <p>Example: <pre class="code> UriTemplate template = new
* UriTemplate("http://example.com/hotels/{hotel}/bookings/{booking}"); System.out.println(template.expand("1", "42));
* </pre> will print: <blockquote><code>http://example.com/hotels/1/bookings/42</code></blockquote>
*
* @param uriVariableValues the array of URI variables
* @return the expanded URI
* @throws IllegalArgumentException if <code>uriVariables</code> is <code>null</code>;
* or if it does not contain sufficient variables
* @throws IllegalArgumentException if <code>uriVariables</code> is <code>null</code>; or if it does not contain
* sufficient variables
*/
public URI expand(String... uriVariableValues) {
Assert.notNull(uriVariableValues, "'uriVariableValues' must not be null");
if (uriVariableValues.length != this.variableNames.size()) {
throw new IllegalArgumentException("Invalid amount of variables values in [" +
this.uriTemplate + "]: expected " + this.variableNames.size() +
"; got " + uriVariableValues.length);
throw new IllegalArgumentException(
"Invalid amount of variables values in [" + this.uriTemplate + "]: expected " +
this.variableNames.size() + "; got " + uriVariableValues.length);
}
Matcher matcher = NAMES_PATTERN.matcher(this.uriTemplate);
StringBuffer buffer = new StringBuffer();
@ -143,6 +133,7 @@ public class UriTemplate {
/**
* Indicate whether the given URI matches this template.
*
* @param uri the URI to match to
* @return <code>true</code> if it matches; <code>false</code> otherwise
*/
@ -155,14 +146,11 @@ public class UriTemplate {
}
/**
* 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.
* <p>Example:
* <pre class="code">
* UriTemplate template = new UriTemplate("http://example.com/hotels/{hotel}/bookings/{booking}");
* System.out.println(template.match("http://example.com/hotels/1/bookings/42"));
* </pre>
* will print: <blockquote><code>{hotel=1, booking=42}</code></blockquote>
* 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. <p>Example: <pre class="code"> UriTemplate template = new
* UriTemplate("http://example.com/hotels/{hotel}/bookings/{booking}"); System.out.println(template.match("http://example.com/hotels/1/bookings/42"));
* </pre> will print: <blockquote><code>{hotel=1, booking=42}</code></blockquote>
*
* @param uri the URI to match to
* @return a map of variable values
*/
@ -185,30 +173,57 @@ public class UriTemplate {
return this.uriTemplate;
}
private static URI encodeUri(String uri) {
try {
int idx = uri.indexOf(':');
URI result;
if (idx != -1) {
String scheme = uri.substring(0, idx);
String ssp = uri.substring(idx + 1);
result = new URI(scheme, ssp, null);
int schemeIdx = uri.indexOf(':');
if (schemeIdx == -1) {
int queryIdx = uri.indexOf('?');
if (queryIdx == -1) {
int fragmentIdx = uri.indexOf('#');
if (fragmentIdx == -1) {
return new URI(null, null, uri, null);
}
else {
result = new URI(null, null, uri, null);
String path = uri.substring(0, fragmentIdx);
String fragment = uri.substring(fragmentIdx + 1);
return new URI(null, null, path, fragment);
}
}
else {
int fragmentIdx = uri.indexOf('#', queryIdx + 1);
if (fragmentIdx == -1) {
String path = uri.substring(0, queryIdx);
String query = uri.substring(queryIdx + 1);
return new URI(null, null, path, query, null);
}
else {
String path = uri.substring(0, queryIdx);
String query = uri.substring(queryIdx + 1, fragmentIdx);
String fragment = uri.substring(fragmentIdx + 1);
return new URI(null, null, path, query, fragment);
}
}
}
else {
int fragmentIdx = uri.indexOf('#', schemeIdx + 1);
String scheme = uri.substring(0, schemeIdx);
if (fragmentIdx == -1) {
String ssp = uri.substring(schemeIdx + 1);
return new URI(scheme, ssp, null);
}
else {
String ssp = uri.substring(schemeIdx + 1, fragmentIdx);
String fragment = uri.substring(fragmentIdx + 1);
return new URI(scheme, ssp, fragment);
}
}
return result;
}
catch (URISyntaxException ex) {
throw new IllegalArgumentException("Could not create URI from [" + uri + "]: " + ex);
}
}
/**
* Static inner class to parse uri template strings into a matching regular expression.
*/
/** Static inner class to parse uri template strings into a matching regular expression. */
private static class Parser {
private final List<String> variableNames = new LinkedList<String>();
@ -240,7 +255,6 @@ public class UriTemplate {
return Pattern.quote(result);
}
private List<String> getVariableNames() {
return Collections.unmodifiableList(this.variableNames);
}

43
org.springframework.web/src/test/java/org/springframework/web/util/UriTemplateTests.java
View File

@ -24,41 +24,34 @@ import java.util.List;
import java.util.Map;
import static org.junit.Assert.*;
import org.junit.Before;
import org.junit.Test;
/**
* @author Arjen Poutsma
*/
/** @author Arjen Poutsma */
public class UriTemplateTests {
private UriTemplate template;
@Before
public void create() {
template = new UriTemplate("http://example.com/hotels/{hotel}/bookings/{booking}");
}
@Test
public void getVariableNames() throws Exception {
UriTemplate template = new UriTemplate("http://example.com/hotels/{hotel}/bookings/{booking}");
List<String> variableNames = template.getVariableNames();
assertEquals("Invalid variable names", Arrays.asList("hotel", "booking"), variableNames);
}
@Test
public void expandVarArgs() throws Exception {
UriTemplate template = new UriTemplate("http://example.com/hotels/{hotel}/bookings/{booking}");
URI result = template.expand("1", "42");
assertEquals("Invalid expanded template", new URI("http://example.com/hotels/1/bookings/42"), result);
}
@Test(expected = IllegalArgumentException.class)
public void expandVarArgsInvalidAmountVariables() throws Exception {
UriTemplate template = new UriTemplate("http://example.com/hotels/{hotel}/bookings/{booking}");
template.expand("1", "42", "100");
}
@Test
public void expandMapDuplicateVariables() throws Exception {
template = new UriTemplate("/order/{c}/{c}/{c}");
UriTemplate template = new UriTemplate("/order/{c}/{c}/{c}");
assertEquals("Invalid variable names", Arrays.asList("c", "c", "c"), template.getVariableNames());
URI result = template.expand(Collections.singletonMap("c", "cheeseburger"));
assertEquals("Invalid expanded template", new URI("/order/cheeseburger/cheeseburger/cheeseburger"), result);
@ -69,12 +62,14 @@ public class UriTemplateTests {
Map<String, String> uriVariables = new HashMap<String, String>(2);
uriVariables.put("booking", "42");
uriVariables.put("hotel", "1");
UriTemplate template = new UriTemplate("http://example.com/hotels/{hotel}/bookings/{booking}");
URI result = template.expand(uriVariables);
assertEquals("Invalid expanded template", new URI("http://example.com/hotels/1/bookings/42"), result);
}
@Test(expected = IllegalArgumentException.class)
public void expandMapInvalidAmountVariables() throws Exception {
UriTemplate template = new UriTemplate("http://example.com/hotels/{hotel}/bookings/{booking}");
template.expand(Collections.singletonMap("hotel", "1"));
}
@ -83,12 +78,13 @@ public class UriTemplateTests {
Map<String, String> uriVariables = new HashMap<String, String>(2);
uriVariables.put("booking", "42");
uriVariables.put("bar", "1");
UriTemplate template = new UriTemplate("http://example.com/hotels/{hotel}/bookings/{booking}");
template.expand(uriVariables);
}
@Test
public void expandEncoded() throws Exception {
template = new UriTemplate("http://example.com/hotel list/{hotel}");
UriTemplate template = new UriTemplate("http://example.com/hotel list/{hotel}");
URI result = template.expand(Collections.singletonMap("hotel", "foo bar \u20AC"));
assertEquals("Invalid expanded template", new URI("http", "//example.com/hotel list/foo bar \u20AC", null),
result);
@ -98,6 +94,7 @@ public class UriTemplateTests {
@Test
public void matches() throws Exception {
UriTemplate template = new UriTemplate("http://example.com/hotels/{hotel}/bookings/{booking}");
assertTrue("UriTemplate does not match", template.matches("http://example.com/hotels/1/bookings/42"));
assertFalse("UriTemplate matches", template.matches("http://example.com/hotels/bookings"));
assertFalse("UriTemplate matches", template.matches(""));
@ -110,13 +107,14 @@ public class UriTemplateTests {
expected.put("booking", "42");
expected.put("hotel", "1");
UriTemplate template = new UriTemplate("http://example.com/hotels/{hotel}/bookings/{booking}");
Map<String, String> result = template.match("http://example.com/hotels/1/bookings/42");
assertEquals("Invalid match", expected, result);
}
@Test
public void matchDuplicate() throws Exception {
template = new UriTemplate("/order/{c}/{c}/{c}");
UriTemplate template = new UriTemplate("/order/{c}/{c}/{c}");
Map<String, String> result = template.match("/order/cheeseburger/cheeseburger/cheeseburger");
Map<String, String> expected = Collections.singletonMap("c", "cheeseburger");
assertEquals("Invalid match", expected, result);
@ -124,11 +122,26 @@ public class UriTemplateTests {
@Test
public void matchMultipleInOneSegment() throws Exception {
template = new UriTemplate("/{foo}-{bar}");
UriTemplate template = new UriTemplate("/{foo}-{bar}");
Map<String, String> result = template.match("/12-34");
Map<String, String> expected = new HashMap<String, String>(2);
expected.put("foo", "12");
expected.put("bar", "34");
assertEquals("Invalid match", expected, result);
}
@Test
public void queryVariables() throws Exception {
UriTemplate template = new UriTemplate("/search?q={query}");
assertTrue(template.matches("/search?q=foo"));
}
@Test
public void fragments() throws Exception {
UriTemplate template = new UriTemplate("/search#{fragment}");
assertTrue(template.matches("/search#foo"));
template = new UriTemplate("/search?query={query}#{fragment}");
assertTrue(template.matches("/search?query=foo#bar"));
}
}