Polish SnakeYAML 2.0 upgrade

See gh-30048

Author: bclozel

spring-beans/src/main/java/org/springframework/beans/factory/config/YamlMapFactoryBean.java

@@ -64,7 +64,7 @@
  * Note that the value of "foo" in the first document is not simply replaced
  * with the value in the second, but its nested values are merged.
  *
- * <p>Requires SnakeYAML 1.18 or higher, as of Spring Framework 5.0.6.
+ * <p>Requires SnakeYAML 2.0 or higher, as of Spring Framework 6.1.0.
  *
  * @author Dave Syer
  * @author Juergen Hoeller

spring-beans/src/main/java/org/springframework/beans/factory/config/YamlProcessor.java

@@ -33,6 +33,7 @@
 import org.yaml.snakeyaml.DumperOptions;
 import org.yaml.snakeyaml.LoaderOptions;
 import org.yaml.snakeyaml.Yaml;
+import org.yaml.snakeyaml.composer.ComposerException;
 import org.yaml.snakeyaml.constructor.Constructor;
 import org.yaml.snakeyaml.inspector.TagInspector;
 import org.yaml.snakeyaml.nodes.Tag;
@@ -49,7 +50,7 @@
 /**
  * Base class for YAML factories.
  *
- * <p>Requires SnakeYAML 1.18 or higher, as of Spring Framework 5.0.6.
+ * <p>Requires SnakeYAML 2.0 or higher, as of Spring Framework 6.1.0.
  *
  * @author Dave Syer
  * @author Juergen Hoeller
@@ -134,7 +135,7 @@ public void setResources(Resource... resources) {
 	 * <p>If no supported types are configured, only Java standard classes
 	 * (as defined in {@link org.yaml.snakeyaml.constructor.SafeConstructor})
 	 * encountered in YAML documents will be supported.
-	 * If an unsupported type is encountered, an {@link IllegalStateException}
+	 * If an unsupported type is encountered, an {@link ComposerException}
 	 * will be thrown when the corresponding YAML node is processed.
 	 * @param supportedTypes the supported types, or an empty array to clear the
 	 * supported types
@@ -175,12 +176,12 @@ protected void process(MatchCallback callback) {
 	/**
 	 * Create the {@link Yaml} instance to use.
 	 * <p>The default implementation sets the "allowDuplicateKeys" flag to {@code false},
-	 * enabling built-in duplicate key handling in SnakeYAML 1.18+.
-	 * <p>As of Spring Framework 5.1.16, if custom {@linkplain #setSupportedTypes
-	 * supported types} have been configured, the default implementation creates
-	 * a {@code Yaml} instance that filters out unsupported types encountered in
-	 * YAML documents. If an unsupported type is encountered, an
-	 * {@link IllegalStateException} will be thrown when the node is processed.
+	 * enabling built-in duplicate key handling.
+	 * <p>If custom {@linkplain #setSupportedTypes supported types} have been configured,
+	 * the default implementation creates a {@code Yaml} instance that filters out
+	 * unsupported types encountered in YAML documents.
+	 * If an unsupported type is encountered, an {@link ComposerException} will be
+	 * thrown when the node is processed.
 	 * @see LoaderOptions#setAllowDuplicateKeys(boolean)
 	 */
 	protected Yaml createYaml() {

spring-beans/src/main/java/org/springframework/beans/factory/config/YamlPropertiesFactoryBean.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2019 the original author or authors.
+ * Copyright 2002-2023 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.
@@ -74,7 +74,7 @@
  * servers[1]=foo.bar.com
  * </pre>
  *
- * <p>Requires SnakeYAML 1.18 or higher, as of Spring Framework 5.0.6.
+ * <p>Requires SnakeYAML 2.0 or higher, as of Spring Framework 6.1.0.
  *
  * @author Dave Syer
  * @author Stephane Nicoll