upgrade jackson to 2.16.x, remove deprecated JsonNodeFactory.withExactBigDecimals

apache#13662

Author: showuon

connect/json/src/main/java/org/apache/kafka/connect/json/JsonConverter.java

@@ -141,7 +141,7 @@ public class JsonConverter implements Converter, HeaderConverter {
     // names specified in the field
     private static final HashMap<String, LogicalTypeConverter> LOGICAL_CONVERTERS = new HashMap<>();
 
-    private static final JsonNodeFactory JSON_NODE_FACTORY = JsonNodeFactory.withExactBigDecimals(true);
+    private static final JsonNodeFactory JSON_NODE_FACTORY = new JsonNodeFactory(true);
 
     static {
         LOGICAL_CONVERTERS.put(Decimal.LOGICAL_NAME, new LogicalTypeConverter() {

connect/json/src/main/java/org/apache/kafka/connect/json/JsonDeserializer.java

@@ -36,7 +36,7 @@ public class JsonDeserializer implements Deserializer<JsonNode> {
      * Default constructor needed by Kafka
      */
     public JsonDeserializer() {
-        this(Collections.emptySet(), JsonNodeFactory.withExactBigDecimals(true));
+        this(Collections.emptySet(), new JsonNodeFactory(true));
     }
 
     /**

connect/json/src/main/java/org/apache/kafka/connect/json/JsonSerializer.java

@@ -37,7 +37,7 @@ public class JsonSerializer implements Serializer<JsonNode> {
      * Default constructor needed by Kafka
      */
     public JsonSerializer() {
-        this(Collections.emptySet(), JsonNodeFactory.withExactBigDecimals(true));
+        this(Collections.emptySet(), new JsonNodeFactory(true));
     }
 
     /**

connect/json/src/test/java/org/apache/kafka/connect/json/JsonConverterTest.java

@@ -48,6 +48,7 @@
 import java.util.HashMap;
 import java.util.HashSet;
 import java.util.Map;
+import java.util.Objects;
 import java.util.Set;
 import java.util.TimeZone;
 
@@ -64,7 +65,7 @@ public class JsonConverterTest {
 
     private final ObjectMapper objectMapper = new ObjectMapper()
         .enable(DeserializationFeature.USE_BIG_DECIMAL_FOR_FLOATS)
-        .setNodeFactory(JsonNodeFactory.withExactBigDecimals(true));
+        .setNodeFactory(new JsonNodeFactory(true));
 
     private final JsonConverter converter = new JsonConverter();
 
@@ -860,7 +861,7 @@ public void testCacheSchemaToJsonConversion() {
 
     @Test
     public void testJsonSchemaCacheSizeFromConfigFile() throws URISyntaxException, IOException {
-        URL url = getClass().getResource("/connect-test.properties");
+        URL url = Objects.requireNonNull(getClass().getResource("/connect-test.properties"));
         File propFile = new File(url.toURI());
         String workerPropsFile = propFile.getAbsolutePath();
         Map<String, String> workerProps = !workerPropsFile.isEmpty() ?