Improve suffix pattern check

After this change dots inside URI variables in a request mapping
pattern are ignored and no longer considered an indication that
the pattern contains a suffix itself.

Issue: SPR-11532

spring-webmvc/src/main/java/org/springframework/web/servlet/mvc/condition/PatternsRequestCondition.java

@@ -249,8 +249,7 @@ public final class PatternsRequestCondition extends AbstractRequestCondition<Pat
 				}
 			}
 			else {
-				boolean hasSuffix = pattern.indexOf('.') != -1;
-				if (!hasSuffix && this.pathMatcher.match(pattern + ".*", lookupPath)) {
+				if (!hasSuffix(pattern) && this.pathMatcher.match(pattern + ".*", lookupPath)) {
 					return pattern + ".*";
 				}
 			}
@@ -266,6 +265,28 @@ public final class PatternsRequestCondition extends AbstractRequestCondition<Pat
 		return null;
 	}
 
+	private boolean hasSuffix(String pattern) {
+		boolean uriVarMode = false;
+		for (int i = pattern.length(); i > 0; i--) {
+			char c = pattern.charAt(i-1);
+			if (c == '}') {
+				uriVarMode = true;
+			}
+			else if (c == '{') {
+				uriVarMode = false;
+			}
+			else if (c == '/') {
+				return false;
+			}
+			else {
+				if (!uriVarMode && c == '.') {
+					return true;
+				}
+			}
+		}
+		return false;
+	}
+
 	/**
 	 * Compare the two conditions based on the URL patterns they contain.
 	 * Patterns are compared one at a time, from top to bottom via

spring-webmvc/src/test/java/org/springframework/web/servlet/mvc/condition/PatternsRequestConditionTests.java

 /*
- * Copyright 2002-2012 the original author or authors.
+ * Copyright 2002-2014 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -115,6 +115,26 @@ public class PatternsRequestConditionTests {
 		assertEquals("/{foo}", match.getPatterns().iterator().next());
 	}
 
+	// SPR-11532
+
+	@Test
+	public void matchSuffixPatternWithUriVariables() {
+		testSuffixPattern("/employees/{areaOfResponsibility.owner.id}", "/employees/976685.json", false);
+		testSuffixPattern("/establishments/{establishmentId}", "/establishments/123456789.json", false);
+		testSuffixPattern("/a.b/c", "/a.b/c.json", false);
+		testSuffixPattern("/a/b.json", "/a/b.json", true);
+		testSuffixPattern("/a/{b}.{c}", "/a/b.c", true);
+	}
+
+	public void testSuffixPattern(String pattern, String url, boolean patternHasSuffix) {
+		MockHttpServletRequest request = new MockHttpServletRequest("GET", url);
+		PatternsRequestCondition condition = new PatternsRequestCondition(pattern);
+		PatternsRequestCondition match = condition.getMatchingCondition(request);
+
+		assertNotNull(match);
+		assertEquals((patternHasSuffix ? pattern : pattern + ".*"), match.getPatterns().iterator().next());
+	}
+
 	// SPR-8410
 
 	@Test