List all unsatisfied request param groups

Issue: SPR-12854

spring-webmvc/src/main/java/org/springframework/web/servlet/mvc/method/RequestMappingInfoHandlerMapping.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2014 the original author or authors.
+ * Copyright 2002-2015 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.
@@ -22,6 +22,7 @@ import java.util.Comparator;
 import java.util.HashSet;
 import java.util.LinkedHashMap;
 import java.util.LinkedHashSet;
+import java.util.List;
 import java.util.Map;
 import java.util.Map.Entry;
 import java.util.Set;
@@ -205,7 +206,7 @@ public abstract class RequestMappingInfoHandlerMapping extends AbstractHandlerMe
 
 		Set<MediaType> consumableMediaTypes;
 		Set<MediaType> producibleMediaTypes;
-		Set<String> paramConditions;
+		List<String[]> paramConditions;
 
 		if (patternAndMethodMatches.isEmpty()) {
 			consumableMediaTypes = getConsumableMediaTypes(request, patternMatches);
@@ -234,8 +235,7 @@ public abstract class RequestMappingInfoHandlerMapping extends AbstractHandlerMe
 			throw new HttpMediaTypeNotAcceptableException(new ArrayList<MediaType>(producibleMediaTypes));
 		}
 		else if (!CollectionUtils.isEmpty(paramConditions)) {
-			String[] params = paramConditions.toArray(new String[paramConditions.size()]);
-			throw new UnsatisfiedServletRequestParameterException(params, request.getParameterMap());
+			throw new UnsatisfiedServletRequestParameterException(paramConditions, request.getParameterMap());
 		}
 		else {
 			return null;
@@ -262,18 +262,21 @@ public abstract class RequestMappingInfoHandlerMapping extends AbstractHandlerMe
 		return result;
 	}
 
-	private Set<String> getRequestParams(HttpServletRequest request, Set<RequestMappingInfo> partialMatches) {
+	private List<String[]> getRequestParams(HttpServletRequest request, Set<RequestMappingInfo> partialMatches) {
+		List<String[]> result = new ArrayList<String[]>();
 		for (RequestMappingInfo partialMatch : partialMatches) {
 			ParamsRequestCondition condition = partialMatch.getParamsCondition();
-			if (!CollectionUtils.isEmpty(condition.getExpressions()) && (condition.getMatchingCondition(request) == null)) {
-				Set<String> expressions = new HashSet<String>();
-				for (NameValueExpression<String> expr : condition.getExpressions()) {
-					expressions.add(expr.toString());
+			Set<NameValueExpression<String>> expressions = condition.getExpressions();
+			if (!CollectionUtils.isEmpty(expressions) && condition.getMatchingCondition(request) == null) {
+				int i = 0;
+				String[] array = new String[expressions.size()];
+				for (NameValueExpression<String> expression : expressions) {
+					array[i++] = expression.toString();
 				}
-				return expressions;
+				result.add(array);
 			}
 		}
-		return null;
+		return result;
 	}
 
 }

spring-webmvc/src/test/java/org/springframework/web/servlet/mvc/method/RequestMappingInfoHandlerMappingTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2013 the original author or authors.
+ * Copyright 2002-2015 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.
@@ -16,12 +16,17 @@
 
 package org.springframework.web.servlet.mvc.method;
 
+import static org.hamcrest.Matchers.*;
+import static org.junit.Assert.*;
+
 import java.lang.reflect.Method;
 import java.util.Arrays;
 import java.util.Collections;
 import java.util.HashSet;
+import java.util.List;
 import java.util.Map;
 import java.util.Set;
+
 import javax.servlet.http.HttpServletRequest;
 
 import org.junit.Before;
@@ -54,8 +59,6 @@ import org.springframework.web.servlet.mvc.condition.ProducesRequestCondition;
 import org.springframework.web.servlet.mvc.condition.RequestMethodsRequestCondition;
 import org.springframework.web.util.UrlPathHelper;
 
-import static org.junit.Assert.*;
-
 /**
  * Test fixture with {@link RequestMappingInfoHandlerMapping}.
  *
@@ -211,6 +214,8 @@ public class RequestMappingInfoHandlerMappingTests {
 		}
 	}
 
+	// SPR-12854
+
 	@Test
 	public void testUnsatisfiedServletRequestParameterException() throws Exception {
 		try {
@@ -219,8 +224,10 @@ public class RequestMappingInfoHandlerMappingTests {
 			fail("UnsatisfiedServletRequestParameterException expected");
 		}
 		catch (UnsatisfiedServletRequestParameterException ex) {
-			assertArrayEquals("Invalid request parameter conditions",
-					new String[] { "foo=bar" }, ex.getParamConditions());
+			List<String[]> groups = ex.getParamConditionGroups();
+			assertEquals(2, groups.size());
+			assertThat(Arrays.asList("foo=bar", "bar=baz"),
+					containsInAnyOrder(groups.get(0)[0], groups.get(1)[0]));
 		}
 	}
 
@@ -408,6 +415,7 @@ public class RequestMappingInfoHandlerMappingTests {
 	}
 
 
+	@SuppressWarnings("unused")
 	@Controller
 	private static class TestController {
 
@@ -441,6 +449,11 @@ public class RequestMappingInfoHandlerMappingTests {
 			return "";
 		}
 
+		@RequestMapping(value = "/params", params="bar=baz")
+		public String param2() {
+			return "";
+		}
+
 		@RequestMapping(value = "/content", produces="application/xml")
 		public String xmlContent() {
 			return "";
@@ -452,6 +465,7 @@ public class RequestMappingInfoHandlerMappingTests {
 		}
 	}
 
+	@SuppressWarnings("unused")
 	@Controller
 	private static class UserController {