Use Class.getTypeName() where appropriate

Issue: SPR-15237

spring-core/src/main/java/org/springframework/util/ClassUtils.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2016 the original author or authors.
+ * Copyright 2002-2017 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.
@@ -480,28 +480,7 @@ public abstract class ClassUtils {
 	 */
 	public static String getQualifiedName(Class<?> clazz) {
 		Assert.notNull(clazz, "Class must not be null");
-		if (clazz.isArray()) {
-			return getQualifiedNameForArray(clazz);
-		}
-		else {
-			return clazz.getName();
-		}
-	}
-
-	/**
-	 * Build a nice qualified name for an array:
-	 * component type class name + "[]".
-	 * @param clazz the array class
-	 * @return a qualified name for the array class
-	 */
-	private static String getQualifiedNameForArray(Class<?> clazz) {
-		StringBuilder result = new StringBuilder();
-		while (clazz.isArray()) {
-			clazz = clazz.getComponentType();
-			result.append(ARRAY_SUFFIX);
-		}
-		result.insert(0, clazz.getName());
-		return result.toString();
+		return clazz.getTypeName();
 	}
 
 	/**
@@ -552,11 +531,8 @@ public abstract class ClassUtils {
 			}
 			return result.toString();
 		}
-		else if (clazz.isArray()) {
-			return getQualifiedNameForArray(clazz);
-		}
 		else {
-			return clazz.getName();
+			return clazz.getTypeName();
 		}
 	}
 
@@ -567,8 +543,7 @@ public abstract class ClassUtils {
 	 */
 	public static boolean matchesTypeName(Class<?> clazz, String typeName) {
 		return (typeName != null &&
-				(typeName.equals(clazz.getName()) || typeName.equals(clazz.getSimpleName()) ||
-				(clazz.isArray() && typeName.equals(getQualifiedNameForArray(clazz)))));
+				(typeName.equals(clazz.getTypeName()) || typeName.equals(clazz.getSimpleName())));
 	}
 
 

spring-expression/src/main/java/org/springframework/expression/spel/ast/FormatHelper.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2014 the original author or authors.
+ * Copyright 2002-2017 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.
@@ -62,23 +62,7 @@ public class FormatHelper {
 		if (clazz == null) {
 			return "null";
 		}
-		if (clazz.isArray()) {
-			StringBuilder sb = new StringBuilder();
-			int dims = 1;
-			Class<?> baseClass = clazz.getComponentType();
-			while (baseClass.isArray()) {
-				baseClass = baseClass.getComponentType();
-				dims++;
-			}
-			sb.append(baseClass.getName());
-			for (int i = 0; i < dims; i++) {
-				sb.append("[]");
-			}
-			return sb.toString();
-		}
-		else {
-			return clazz.getName();
-		}
+		return clazz.getTypeName();
 	}
 
 }

spring-expression/src/test/java/org/springframework/expression/spel/support/ReflectionHelperTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2016 the original author or authors.
+ * Copyright 2002-2017 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.
@@ -48,6 +48,7 @@ public class ReflectionHelperTests extends AbstractExpressionTests {
 	public void testFormatHelperForClassName() {
 		assertEquals("java.lang.String",FormatHelper.formatClassNameForMessage(String.class));
 		assertEquals("java.lang.String[]",FormatHelper.formatClassNameForMessage(new String[1].getClass()));
+		assertEquals("java.lang.String[][]",FormatHelper.formatClassNameForMessage(new String[1][1].getClass()));
 		assertEquals("int[]",FormatHelper.formatClassNameForMessage(new int[1].getClass()));
 		assertEquals("int[][]",FormatHelper.formatClassNameForMessage(new int[1][2].getClass()));
 		assertEquals("null",FormatHelper.formatClassNameForMessage(null));