Correct conversion from Resource[] with length 1 to Collection<Resource>

Fix GH-31693

Author: quaff

spring-beans/src/main/java/org/springframework/beans/TypeConverterDelegate.java

@@ -49,6 +49,7 @@
  * @author Juergen Hoeller
  * @author Rob Harrop
  * @author Dave Syer
+ * @author Yanming Zhou
  * @since 2.0
  * @see BeanWrapperImpl
  * @see SimpleTypeConverter
@@ -178,15 +179,15 @@ else if (requiredType.isArray()) {
 					return (T) convertToTypedArray(convertedValue, propertyName, requiredType.componentType());
 				}
 				else if (convertedValue.getClass().isArray()) {
-					if (Array.getLength(convertedValue) == 1) {
-						convertedValue = Array.get(convertedValue, 0);
-						standardConversion = true;
-					}
-					else if (Collection.class.isAssignableFrom(requiredType)) {
+					if (Collection.class.isAssignableFrom(requiredType)) {
 						convertedValue = convertToTypedCollection(CollectionUtils.arrayToList(convertedValue),
 								propertyName, requiredType, typeDescriptor);
 						standardConversion = true;
 					}
+					else if (Array.getLength(convertedValue) == 1) {
+						convertedValue = Array.get(convertedValue, 0);
+						standardConversion = true;
+					}
 				}
 				else if (convertedValue instanceof Collection<?> coll) {
 					// Convert elements to target type, if determined.

spring-context/src/test/java/org/springframework/context/support/ClassPathXmlApplicationContextTests.java

@@ -48,6 +48,7 @@
  * @author Juergen Hoeller
  * @author Chris Beams
  * @author Sam Brannen
+ * @author Yanming Zhou
  */
 public class ClassPathXmlApplicationContextTests {
 
@@ -223,6 +224,10 @@ void resourceArrayPropertyEditor() throws IOException {
 		Service service = ctx.getBean("service", Service.class);
 		assertThat(service.getResources()).containsExactlyInAnyOrder(contextA, contextB, contextC);
 		assertThat(service.getResourceSet()).containsExactlyInAnyOrder(contextA, contextB, contextC);
+
+		Service service3 = ctx.getBean("service3", Service.class);
+		assertThat(service3.getResources()).containsOnly(new ClassPathResource(FQ_CONTEXT_A));
+		assertThat(service3.getResourceSet()).containsOnly(new ClassPathResource(FQ_CONTEXT_A));
 		ctx.close();
 	}
 

spring-context/src/test/resources/org/springframework/context/support/test/contextA.xml

@@ -24,6 +24,11 @@
 		<property name="resources" value="/org/springframework/context/support/test/context*.xml"/>
 	</bean>
 
+	<bean name="service3" class="org.springframework.context.support.Service">
+		<property name="resources" value="/org/springframework/context/support/test/contextA.xml"/>
+		<property name="resourceSet" value="/org/springframework/context/support/test/contextA.xml"/>
+	</bean>
+
 	<bean name="autowiredService" class="org.springframework.context.support.AutowiredService" autowire="byName"/>
 
 	<bean name="autowiredService2" class="org.springframework.context.support.AutowiredService" autowire="byType"/>