Improve relaxed enum binding

Update RelaxedConversionService to support more relaxed enum binding.

Fixes gh-1950

spring-boot-samples/spring-boot-sample-tomcat/src/main/java/sample/tomcat/web/SampleControllerAdvice.java

+/*
+ * Copyright 2012-2014 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.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package sample.tomcat.web;
+
+import javax.servlet.DispatcherType;
+import javax.servlet.http.HttpServletRequest;
+
+import org.springframework.web.bind.annotation.ControllerAdvice;
+import org.springframework.web.bind.annotation.ModelAttribute;
+
+@ControllerAdvice
+public class SampleControllerAdvice {
+
+	@ModelAttribute
+	public boolean test(HttpServletRequest request) {
+		if (DispatcherType.ERROR.equals(request.getDispatcherType())) {
+			return false;
+		}
+		System.out.println(request.getPathInfo());
+		throw new RuntimeException("test");
+	}
+
+}

spring-boot/src/main/java/org/springframework/boot/bind/RelaxedConversionService.java

@@ -123,6 +123,13 @@ class RelaxedConversionService implements ConversionService {
 				}
 				source = source.trim();
 				for (T candidate : (Set<T>) EnumSet.allOf(this.enumType)) {
+					RelaxedNames names = new RelaxedNames(candidate.name()
+							.replace("_", "-").toLowerCase());
+					for (String name : names) {
+						if (name.equals(source)) {
+							return candidate;
+						}
+					}
 					if (candidate.name().equalsIgnoreCase(source)) {
 						return candidate;
 					}

spring-boot/src/test/java/org/springframework/boot/bind/RelaxedDataBinderTests.java

@@ -479,6 +479,18 @@ public class RelaxedDataBinderTests {
 		result = bind(target, "bingo: that");
 		assertThat(result.getErrorCount(), equalTo(0));
 		assertThat(target.getBingo(), equalTo(Bingo.THAT));
+
+		result = bind(target, "bingo: the-other");
+		assertThat(result.getErrorCount(), equalTo(0));
+		assertThat(target.getBingo(), equalTo(Bingo.THE_OTHER));
+
+		result = bind(target, "bingo: the_other");
+		assertThat(result.getErrorCount(), equalTo(0));
+		assertThat(target.getBingo(), equalTo(Bingo.THE_OTHER));
+
+		result = bind(target, "bingo: The_Other");
+		assertThat(result.getErrorCount(), equalTo(0));
+		assertThat(target.getBingo(), equalTo(Bingo.THE_OTHER));
 	}
 
 	private BindingResult bind(Object target, String values) throws Exception {
@@ -615,7 +627,7 @@ public class RelaxedDataBinderTests {
 		private Map<Bingo, Object> nested;
 
 		public Map<Bingo, Object> getNested() {
-			return nested;
+			return this.nested;
 		}
 
 		public void setNested(Map<Bingo, Object> nested) {
@@ -800,7 +812,7 @@ public class RelaxedDataBinderTests {
 	}
 
 	static enum Bingo {
-		THIS, or, THAT
+		THIS, or, THAT, THE_OTHER
 	}
 
 	public static class ValidatedTarget {