Adapt to upcoming changes in core framework.

This commit makes sure to move off deprecated API and changes event listener generics in tests to comply with java assignability rules.

Closes: #4749

spring-data-mongodb/src/test/java/org/springframework/data/mongodb/core/mapping/event/AfterSaveListener.java

@@ -20,11 +20,11 @@ import java.util.ArrayList;
 import org.springframework.context.ApplicationEvent;
 import org.springframework.context.ApplicationListener;
 
-public class AfterSaveListener implements ApplicationListener<AfterSaveEvent<Object>> {
+public class AfterSaveListener implements ApplicationListener<AfterSaveEvent<? extends Object>> {
 
 	public final ArrayList<ApplicationEvent> seenEvents = new ArrayList<ApplicationEvent>();
 
-	public void onApplicationEvent(AfterSaveEvent<Object> event) {
+	public void onApplicationEvent(AfterSaveEvent<? extends Object> event) {
 		this.seenEvents.add(event);
 	}
 

spring-data-mongodb/src/test/java/org/springframework/data/mongodb/core/query/CriteriaTests.java

@@ -20,6 +20,7 @@ import static org.springframework.data.mongodb.core.query.Criteria.*;
 import static org.springframework.data.mongodb.core.query.Query.*;
 
 import java.util.Arrays;
+import java.util.Base64;
 
 import org.bson.types.Binary;
 import org.junit.jupiter.api.BeforeEach;
@@ -29,7 +30,6 @@ import org.springframework.data.annotation.Id;
 import org.springframework.data.mongodb.test.util.MongoTemplateExtension;
 import org.springframework.data.mongodb.test.util.MongoTestTemplate;
 import org.springframework.data.mongodb.test.util.Template;
-import org.springframework.util.Base64Utils;
 
 /**
  * Integration tests for {@link Criteria} usage as part of a {@link Query}.
@@ -50,7 +50,7 @@ class CriteriaTests {
 	static final DocumentWithBitmask TWENTY_FLOAT/*00010100*/ = new DocumentWithBitmask("3", Float.valueOf(20),
 			Integer.toBinaryString(20));
 	static final DocumentWithBitmask ONE_HUNDRED_TWO/*01100110*/ = new DocumentWithBitmask("4",
-			new Binary(Base64Utils.decodeFromString("Zg==")), "01100110");
+			new Binary(Base64.getDecoder().decode("Zg==")), "01100110");
 
 	@BeforeEach
 	void beforeEach() {

spring-data-mongodb/src/test/java/org/springframework/data/mongodb/repository/query/ReactiveStringBasedMongoQueryUnitTests.java

@@ -25,6 +25,7 @@ import reactor.core.publisher.Flux;
 import reactor.core.publisher.Mono;
 
 import java.lang.reflect.Method;
+import java.util.Base64;
 import java.util.Collections;
 import java.util.Map;
 
@@ -55,7 +56,6 @@ import org.springframework.data.repository.query.ReactiveQueryMethodEvaluationCo
 import org.springframework.data.spel.spi.EvaluationContextExtension;
 import org.springframework.data.spel.spi.ReactiveEvaluationContextExtension;
 import org.springframework.expression.spel.standard.SpelExpressionParser;
-import org.springframework.util.Base64Utils;
 
 /**
  * Unit tests for {@link ReactiveStringBasedMongoQuery}.
@@ -224,7 +224,7 @@ public class ReactiveStringBasedMongoQueryUnitTests {
 
 		org.springframework.data.mongodb.core.query.Query query = mongoQuery.createQuery(accesor).block();
 		org.springframework.data.mongodb.core.query.Query reference = new BasicQuery(
-				"{'lastname' : { '$binary' : '" + Base64Utils.encodeToString(binaryData) + "', '$type' : '" + 0 + "'}}");
+				"{'lastname' : { '$binary' : '" + Base64.getEncoder().encodeToString(binaryData) + "', '$type' : '" + 0 + "'}}");
 
 		assertThat(query.getQueryObject().toJson()).isEqualTo(reference.getQueryObject().toJson());
 	}

spring-data-mongodb/src/test/java/org/springframework/data/mongodb/repository/query/StringBasedMongoQueryUnitTests.java

@@ -23,6 +23,7 @@ import java.lang.reflect.Method;
 import java.nio.charset.StandardCharsets;
 import java.util.ArrayList;
 import java.util.Arrays;
+import java.util.Base64;
 import java.util.Collections;
 import java.util.List;
 import java.util.Map;
@@ -60,7 +61,6 @@ import org.springframework.data.repository.Repository;
 import org.springframework.data.repository.core.support.DefaultRepositoryMetadata;
 import org.springframework.data.repository.query.QueryMethodEvaluationContextProvider;
 import org.springframework.expression.spel.standard.SpelExpressionParser;
-import org.springframework.util.Base64Utils;
 
 import com.mongodb.MongoClientSettings;
 import com.mongodb.reactivestreams.client.MongoClients;
@@ -329,7 +329,7 @@ public class StringBasedMongoQueryUnitTests {
 
 		org.springframework.data.mongodb.core.query.Query query = mongoQuery.createQuery(accessor);
 		org.springframework.data.mongodb.core.query.Query reference = new BasicQuery("{'lastname' : { '$binary' : '"
-				+ Base64Utils.encodeToString(binaryData) + "', '$type' : '" + BsonBinarySubType.BINARY.getValue() + "'}}");
+				+ Base64.getEncoder().encodeToString(binaryData) + "', '$type' : '" + BsonBinarySubType.BINARY.getValue() + "'}}");
 
 		assertThat(query.getQueryObject().toJson()).isEqualTo(reference.getQueryObject().toJson());
 	}
@@ -344,7 +344,7 @@ public class StringBasedMongoQueryUnitTests {
 
 		org.springframework.data.mongodb.core.query.Query query = mongoQuery.createQuery(accessor);
 		org.springframework.data.mongodb.core.query.Query reference = new BasicQuery("{'lastname' : { $in: [{'$binary' : '"
-				+ Base64Utils.encodeToString(binaryData) + "', '$type' : '" + BsonBinarySubType.BINARY.getValue() + "'}] }}");
+				+ Base64.getEncoder().encodeToString(binaryData) + "', '$type' : '" + BsonBinarySubType.BINARY.getValue() + "'}] }}");
 
 		assertThat(query.getQueryObject().toJson()).isEqualTo(reference.getQueryObject().toJson());
 	}