Stop using Constants utility in JmsAccessor

See gh-30851

spring-jms/src/main/java/org/springframework/jms/support/JmsAccessor.java

@@ -16,6 +16,8 @@
 
 package org.springframework.jms.support;
 
+import java.util.Map;
+
 import jakarta.jms.Connection;
 import jakarta.jms.ConnectionFactory;
 import jakarta.jms.JMSException;
@@ -24,7 +26,6 @@ import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 
 import org.springframework.beans.factory.InitializingBean;
-import org.springframework.core.Constants;
 import org.springframework.jms.JmsException;
 import org.springframework.lang.Nullable;
 import org.springframework.util.Assert;
@@ -40,14 +41,23 @@ import org.springframework.util.Assert;
  * See {@link org.springframework.jms.core.JmsTemplate}.
  *
  * @author Juergen Hoeller
+ * @author Sam Brannen
  * @since 1.2
  * @see org.springframework.jms.support.destination.JmsDestinationAccessor
  * @see org.springframework.jms.core.JmsTemplate
  */
 public abstract class JmsAccessor implements InitializingBean {
 
-	/** Constants instance for {@code jakarta.jms.Session}. */
-	private static final Constants sessionConstants = new Constants(Session.class);
+	/**
+	 * Map of constant names to constant values for the constants defined in
+	 * {@link jakarta.jms.Session}.
+	 */
+	private static final Map<String, Integer> sessionConstants = Map.of(
+			"AUTO_ACKNOWLEDGE", Session.AUTO_ACKNOWLEDGE,
+			"CLIENT_ACKNOWLEDGE", Session.CLIENT_ACKNOWLEDGE,
+			"DUPS_OK_ACKNOWLEDGE", Session.DUPS_OK_ACKNOWLEDGE,
+			"SESSION_TRANSACTED", Session.SESSION_TRANSACTED
+		);
 
 
 	/** Logger available to subclasses. */
@@ -133,7 +143,10 @@ public abstract class JmsAccessor implements InitializingBean {
 	 * @see jakarta.jms.Connection#createSession(int)
 	 */
 	public void setSessionAcknowledgeModeName(String constantName) {
-		setSessionAcknowledgeMode(sessionConstants.asNumber(constantName).intValue());
+		Assert.hasText(constantName, "'constantName' must not be null or blank");
+		Integer acknowledgeMode = sessionConstants.get(constantName);
+		Assert.notNull(acknowledgeMode, "Only acknowledge mode constants allowed");
+		setSessionAcknowledgeMode(acknowledgeMode);
 	}
 
 	/**

spring-jms/src/test/java/org/springframework/jms/support/JmsAccessorTests.java

@@ -16,11 +16,18 @@
 
 package org.springframework.jms.support;
 
+import java.lang.reflect.Field;
+import java.util.Arrays;
+import java.util.stream.Stream;
+
 import jakarta.jms.Session;
 import org.junit.jupiter.api.Test;
 
+import org.springframework.util.ReflectionUtils;
+
 import static org.assertj.core.api.Assertions.assertThat;
 import static org.assertj.core.api.Assertions.assertThatIllegalArgumentException;
+import static org.assertj.core.api.Assertions.assertThatNoException;
 import static org.mockito.BDDMockito.given;
 import static org.mockito.Mockito.mock;
 
@@ -70,6 +77,24 @@ class JmsAccessorTests {
 		assertThatIllegalArgumentException().isThrownBy(() -> accessor.setSessionAcknowledgeModeName("bogus"));
 	}
 
+	/**
+	 * This test effectively verifies that the internal 'constants' map is properly
+	 * configured for all acknowledge mode constants constants defined in
+	 * {@link jakarta.jms.Session}.
+	 */
+	@Test
+	void setSessionAcknowledgeModeNameToAllSupportedValues() {
+		streamAcknowledgeModeConstants()
+				.map(Field::getName)
+				.forEach(name -> assertThatNoException().isThrownBy(() -> accessor.setSessionAcknowledgeModeName(name)));
+	}
+
+
+	private static Stream<Field> streamAcknowledgeModeConstants() {
+		return Arrays.stream(Session.class.getFields())
+				.filter(ReflectionUtils::isPublicStaticFinal);
+	}
+
 	@Test
 	void customAcknowledgeModeIsConsideredClientAcknowledge() throws Exception {
 		Session session = mock();