Jakarta EE 9 migration

Upgrades many dependency declarations; removes old EJB 2.x support and outdated Servlet-based integrations (Commons FileUpload, FreeMarker JSP support, Tiles).

Closes gh-22093
Closes gh-25354
Closes gh-26185
Closes gh-27423
See gh-27424

spring-core/src/test/java/org/springframework/core/annotation/AnnotatedElementUtilsTests.java

@@ -32,9 +32,9 @@ import java.util.Set;
 
 import javax.annotation.Nonnull;
 import javax.annotation.ParametersAreNonnullByDefault;
-import javax.annotation.Resource;
 import javax.annotation.meta.When;
 
+import jakarta.annotation.Resource;
 import org.junit.jupiter.api.Disabled;
 import org.junit.jupiter.api.Test;
 

spring-core/src/test/java/org/springframework/core/annotation/AnnotationAwareOrderComparatorTests.java

@@ -19,8 +19,7 @@ package org.springframework.core.annotation;
 import java.util.ArrayList;
 import java.util.List;
 
-import javax.annotation.Priority;
-
+import jakarta.annotation.Priority;
 import org.junit.jupiter.api.Test;
 
 import static org.assertj.core.api.Assertions.assertThat;

spring-core/src/test/java/org/springframework/core/annotation/MergedAnnotationsTests.java

@@ -35,8 +35,7 @@ import java.util.NoSuchElementException;
 import java.util.stream.Collectors;
 import java.util.stream.Stream;
 
-import javax.annotation.Resource;
-
+import jakarta.annotation.Resource;
 import org.junit.jupiter.api.Test;
 
 import org.springframework.core.Ordered;
@@ -3011,14 +3010,14 @@ class MergedAnnotationsTests {
 	}
 
 	/**
-	 * Mimics javax.persistence.Id
+	 * Mimics jakarta.persistence.Id
 	 */
 	@Retention(RUNTIME)
 	@interface Id {
 	}
 
 	/**
-	 * Mimics javax.persistence.GeneratedValue
+	 * Mimics jakarta.persistence.GeneratedValue
 	 */
 	@Retention(RUNTIME)
 	@interface GeneratedValue {

spring-core/src/test/java/org/springframework/core/annotation/OrderUtilsTests.java

@@ -16,8 +16,7 @@
 
 package org.springframework.core.annotation;
 
-import javax.annotation.Priority;
-
+import jakarta.annotation.Priority;
 import org.junit.jupiter.api.Test;
 
 import static org.assertj.core.api.Assertions.assertThat;

spring-core/src/test/java/org/springframework/util/Base64UtilsTests.java

@@ -18,8 +18,7 @@ package org.springframework.util;
 
 import java.io.UnsupportedEncodingException;
 
-import javax.xml.bind.DatatypeConverter;
-
+import jakarta.xml.bind.DatatypeConverter;
 import org.junit.jupiter.api.Test;
 
 import static org.assertj.core.api.Assertions.assertThat;