[BAEL-19676] - Move articles out of jackson part 3

jackson-2/.gitignore

@@ -1,16 +0,0 @@
-*.class
-
-#folders#
-/target
-/neoDb*
-/data
-/src/main/webapp/WEB-INF/classes
-*/META-INF/*
-
-# Packaged files #
-*.jar
-*.war
-*.ear
-
-# Files
-/src/main/resources/orderOutput.yaml

jackson-2/README.md

@@ -1,12 +0,0 @@
-## Jackson Cookbooks and Examples
-
-This module contains articles about Jackson.
-
-### The Course
-The "REST With Spring" Classes: http://bit.ly/restwithspring
-
-### Relevant Articles: 
-- [Working with Tree Model Nodes in Jackson](https://www.baeldung.com/jackson-json-node-tree-model)
-- [Compare Two JSON Objects with Jackson](https://www.baeldung.com/jackson-compare-two-json-objects)
-- [Calling Default Serializer from Custom Serializer in Jackson](https://www.baeldung.com/jackson-call-default-serializer-from-custom-serializer)
-- More articles: [[<-- prev]](/../jackson)

jackson-2/src/main/resources/logback.xml

@@ -1,13 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<configuration>
-    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
-        <encoder>
-            <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
-            </pattern>
-        </encoder>
-    </appender>
-
-    <root level="INFO">
-        <appender-ref ref="STDOUT" />
-    </root>
-</configuration>

jackson-annotations/README.md

@@ -5,7 +5,5 @@ This module contains articles about Jackson annotations.
 ### Relevant Articles: 
 - [Guide to @JsonFormat in Jackson](https://www.baeldung.com/jackson-jsonformat)
 - [More Jackson Annotations](https://www.baeldung.com/jackson-advanced-annotations)
-- [Jackson Annotation Examples](https://www.baeldung.com/jackson-annotations)
 - [Jackson – Bidirectional Relationships](https://www.baeldung.com/jackson-bidirectional-relationships-and-infinite-recursion)
-- [Jackson – Change Name of Field](https://www.baeldung.com/jackson-name-of-property)
-- [Jackson Ignore Properties on Marshalling](https://www.baeldung.com/jackson-ignore-properties-on-serialization)
+- [Jackson JSON Views](https://www.baeldung.com/jackson-json-view-annotation)

jackson-annotations/src/test/java/com/baeldung/jackson/ignore/dtos/MyDto.java

@@ -1,54 +0,0 @@
-package com.baeldung.jackson.ignore.dtos;
-
-public class MyDto {
-
-    private String stringValue;
-    private int intValue;
-    private boolean booleanValue;
-
-    public MyDto() {
-        super();
-    }
-
-    public MyDto(final String stringValue, final int intValue, final boolean booleanValue) {
-        super();
-
-        this.stringValue = stringValue;
-        this.intValue = intValue;
-        this.booleanValue = booleanValue;
-    }
-
-    // API
-
-    public String getStringValue() {
-        return stringValue;
-    }
-
-    public void setStringValue(final String stringValue) {
-        this.stringValue = stringValue;
-    }
-
-    public int getIntValue() {
-        return intValue;
-    }
-
-    public void setIntValue(final int intValue) {
-        this.intValue = intValue;
-    }
-
-    public boolean isBooleanValue() {
-        return booleanValue;
-    }
-
-    public void setBooleanValue(final boolean booleanValue) {
-        this.booleanValue = booleanValue;
-    }
-
-    //
-
-    @Override
-    public String toString() {
-        return "MyDto [stringValue=" + stringValue + ", intValue=" + intValue + ", booleanValue=" + booleanValue + "]";
-    }
-
-}

jackson-annotations/src/test/java/com/baeldung/jackson/ignore/dtos/MyDtoIncludeNonDefault.java

@@ -1,43 +0,0 @@
-package com.baeldung.jackson.ignore.dtos;
-
-import com.fasterxml.jackson.annotation.JsonInclude;
-import com.fasterxml.jackson.annotation.JsonInclude.Include;
-
-@JsonInclude(Include.NON_DEFAULT)
-public class MyDtoIncludeNonDefault {
-
-    private String stringValue;
-    private int intValue;
-    private boolean booleanValue;
-
-    public MyDtoIncludeNonDefault() {
-        super();
-    }
-
-    // API
-
-    public String getStringValue() {
-        return stringValue;
-    }
-
-    public void setStringValue(final String stringValue) {
-        this.stringValue = stringValue;
-    }
-
-    public int getIntValue() {
-        return intValue;
-    }
-
-    public void setIntValue(final int intValue) {
-        this.intValue = intValue;
-    }
-
-    public boolean isBooleanValue() {
-        return booleanValue;
-    }
-
-    public void setBooleanValue(final boolean booleanValue) {
-        this.booleanValue = booleanValue;
-    }
-
-}

jackson-annotations/src/test/java/com/baeldung/jackson/ignore/dtos/MyDtoWithSpecialField.java

@@ -1,54 +0,0 @@
-package com.baeldung.jackson.ignore.dtos;
-
-public class MyDtoWithSpecialField {
-
-    private String[] stringValue;
-    private int intValue;
-    private boolean booleanValue;
-
-    public MyDtoWithSpecialField() {
-        super();
-    }
-
-    public MyDtoWithSpecialField(final String[] stringValue, final int intValue, final boolean booleanValue) {
-        super();
-
-        this.stringValue = stringValue;
-        this.intValue = intValue;
-        this.booleanValue = booleanValue;
-    }
-
-    // API
-
-    public String[] getStringValue() {
-        return stringValue;
-    }
-
-    public void setStringValue(final String[] stringValue) {
-        this.stringValue = stringValue;
-    }
-
-    public int getIntValue() {
-        return intValue;
-    }
-
-    public void setIntValue(final int intValue) {
-        this.intValue = intValue;
-    }
-
-    public boolean isBooleanValue() {
-        return booleanValue;
-    }
-
-    public void setBooleanValue(final boolean booleanValue) {
-        this.booleanValue = booleanValue;
-    }
-
-    //
-
-    @Override
-    public String toString() {
-        return "MyDto [stringValue=" + stringValue + ", intValue=" + intValue + ", booleanValue=" + booleanValue + "]";
-    }
-
-}

jackson-annotations/src/test/java/com/baeldung/jackson/jsonview/JacksonJsonViewUnitTest.java

@@ -1,4 +1,4 @@
-package com.baeldung.jackson.test;
+package com.baeldung.jackson.jsonview;
 
 import static org.hamcrest.Matchers.containsString;
 import static org.hamcrest.Matchers.not;

jackson-conversions-2/README.md

@@ -4,8 +4,6 @@ This module contains articles about Jackson conversions.
 
 ### Relevant Articles:
 - [Mapping a Dynamic JSON Object with Jackson](https://www.baeldung.com/jackson-mapping-dynamic-object)
-- [Jackson Unmarshalling JSON with Unknown Properties](https://www.baeldung.com/jackson-deserialize-json-unknown-properties)
-- [Ignore Null Fields with Jackson](https://www.baeldung.com/jackson-ignore-null-fields)
 - [Mapping Multiple JSON Fields to a Single Java Field](https://www.baeldung.com/json-multiple-fields-single-java-field)
 - [Convert XML to JSON Using Jackson](https://www.baeldung.com/jackson-convert-xml-json)
 - [Converting JSON to CSV in Java](https://www.baeldung.com/java-converting-json-to-csv)

jackson-custom-conversions/README.md

@@ -0,0 +1,9 @@
+## Jackson Custom Conversions
+
+This module contains articles about Jackson custom conversions.
+
+### Relevant Articles:
+- [Jackson – Custom Serializer](https://www.baeldung.com/jackson-custom-serialization)
+- [Getting Started with Custom Deserialization in Jackson](https://www.baeldung.com/jackson-deserialization)
+- [Serialize Only Fields that meet a Custom Criteria with Jackson](https://www.baeldung.com/jackson-serialize-field-custom-criteria)
+- [Calling Default Serializer from Custom Serializer in Jackson](https://www.baeldung.com/jackson-call-default-serializer-from-custom-serializer)

jackson-custom-conversions/pom.xml

@@ -1,9 +1,9 @@
 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
-    <artifactId>jackson-2</artifactId>
-    <version>0.1-SNAPSHOT</version>
-    <name>jackson-2</name>
+    <artifactId>jackson-custom-conversions</artifactId>
+    <version>0.0.1-SNAPSHOT</version>
+    <name>jackson-custom-conversions</name>
 
     <parent>
         <groupId>com.baeldung</groupId>
@@ -13,27 +13,25 @@
     </parent>
 
     <dependencies>
-
-        <!-- Allow use of LocalDate -->
+        <dependency>
+            <groupId>com.fasterxml.jackson.core</groupId>
+            <artifactId>jackson-databind</artifactId>
+            <version>${jackson.version}</version>
+        </dependency>
         <dependency>
             <groupId>com.fasterxml.jackson.datatype</groupId>
             <artifactId>jackson-datatype-jsr310</artifactId>
             <version>${jackson.version}</version>
         </dependency>
-
-
-        <!-- test scoped -->
-
         <dependency>
-            <groupId>org.assertj</groupId>
-            <artifactId>assertj-core</artifactId>
-            <version>${assertj.version}</version>
-            <scope>test</scope>
+            <groupId>com.fasterxml.jackson.datatype</groupId>
+            <artifactId>jackson-datatype-joda</artifactId>
+            <version>${jackson.version}</version>
         </dependency>
     </dependencies>
 
     <build>
-        <finalName>jackson-2</finalName>
+        <finalName>jackson-custom-conversions</finalName>
         <resources>
             <resource>
                 <directory>src/main/resources</directory>
@@ -42,10 +40,4 @@
         </resources>
     </build>
 
-    <properties>
-
-        <!-- testing -->
-        <assertj.version>3.11.0</assertj.version>
-    </properties>
-
 </project>

jackson-custom-conversions/src/main/java/com/baeldung/defaultserializercustomserializer/File.java

@@ -1,4 +1,4 @@
-package com.baeldung.jackson.entities;
+package com.baeldung.defaultserializercustomserializer;
 
 public class File {
 

jackson-custom-conversions/src/main/java/com/baeldung/defaultserializercustomserializer/Folder.java

@@ -1,4 +1,4 @@
-package com.baeldung.jackson.entities;
+package com.baeldung.defaultserializercustomserializer;
 
 import java.util.ArrayList;
 import java.util.Date;

jackson-custom-conversions/src/main/java/com/baeldung/defaultserializercustomserializer/FolderBeanSerializerModifier.java

@@ -1,6 +1,5 @@
-package com.baeldung.jackson.serialization.custom.serializer;
+package com.baeldung.defaultserializercustomserializer;
 
-import com.baeldung.jackson.entities.Folder;
 import com.fasterxml.jackson.databind.BeanDescription;
 import com.fasterxml.jackson.databind.JsonSerializer;
 import com.fasterxml.jackson.databind.SerializationConfig;

jackson-custom-conversions/src/main/java/com/baeldung/defaultserializercustomserializer/FolderSerializer.java

@@ -1,9 +1,7 @@
-package com.baeldung.jackson.serialization.custom.serializer;
+package com.baeldung.defaultserializercustomserializer;
 
 import java.io.IOException;
 
-import com.baeldung.jackson.entities.File;
-import com.baeldung.jackson.entities.Folder;
 import com.fasterxml.jackson.core.JsonGenerator;
 import com.fasterxml.jackson.databind.SerializerProvider;
 import com.fasterxml.jackson.databind.ser.std.StdSerializer;

jackson-custom-conversions/src/main/java/com/baeldung/defaultserializercustomserializer/FolderSerializerWithCallingOwnSerializer.java

@@ -1,8 +1,7 @@
-package com.baeldung.jackson.serialization.custom.serializer;
+package com.baeldung.defaultserializercustomserializer;
 
 import java.io.IOException;
 
-import com.baeldung.jackson.entities.Folder;
 import com.fasterxml.jackson.core.JsonGenerator;
 import com.fasterxml.jackson.databind.SerializerProvider;
 import com.fasterxml.jackson.databind.ser.std.StdSerializer;

jackson-custom-conversions/src/main/java/com/baeldung/defaultserializercustomserializer/FolderSerializerWithDefaultSerializerStored.java

@@ -1,8 +1,7 @@
-package com.baeldung.jackson.serialization.custom.serializer;
+package com.baeldung.defaultserializercustomserializer;
 
 import java.io.IOException;
 
-import com.baeldung.jackson.entities.Folder;
 import com.fasterxml.jackson.core.JsonGenerator;
 import com.fasterxml.jackson.databind.JsonSerializer;
 import com.fasterxml.jackson.databind.SerializerProvider;

jackson-custom-conversions/src/main/java/com/baeldung/defaultserializercustomserializer/FolderSerializerWithInternalObjectMapper.java

@@ -1,8 +1,7 @@
-package com.baeldung.jackson.serialization.custom.serializer;
+package com.baeldung.defaultserializercustomserializer;
 
 import java.io.IOException;
 
-import com.baeldung.jackson.entities.Folder;
 import com.fasterxml.jackson.core.JsonGenerator;
 import com.fasterxml.jackson.databind.ObjectMapper;
 import com.fasterxml.jackson.databind.SerializerProvider;

jackson-custom-conversions/src/main/java/com/baeldung/defaultserializercustomserializer/FolderSerializerWithSerializerProvider.java

@@ -1,8 +1,7 @@
-package com.baeldung.jackson.serialization.custom.serializer;
+package com.baeldung.defaultserializercustomserializer;
 
 import java.io.IOException;
 
-import com.baeldung.jackson.entities.Folder;
 import com.fasterxml.jackson.core.JsonGenerator;
 import com.fasterxml.jackson.databind.SerializerProvider;
 import com.fasterxml.jackson.databind.ser.std.StdSerializer;

jackson-custom-conversions/src/main/java/com/baeldung/deserialization/ActorJackson.java

@@ -1,4 +1,4 @@
-package com.baeldung.jackson.entities;
+package com.baeldung.deserialization;
 
 import java.text.DateFormat;
 import java.text.SimpleDateFormat;

jackson-custom-conversions/src/main/java/com/baeldung/deserialization/Item.java

@@ -1,4 +1,4 @@
-package com.baeldung.jackson.dtos;
+package com.baeldung.deserialization;
 
 public class Item {
     public int id;

jackson-custom-conversions/src/main/java/com/baeldung/deserialization/ItemDeserializer.java

@@ -1,9 +1,7 @@
-package com.baeldung.jackson.deserialization;
+package com.baeldung.deserialization;
 
 import java.io.IOException;
 
-import com.baeldung.jackson.dtos.Item;
-import com.baeldung.jackson.dtos.User;
 import com.fasterxml.jackson.core.JsonParser;
 import com.fasterxml.jackson.core.JsonProcessingException;
 import com.fasterxml.jackson.databind.DeserializationContext;

jackson-custom-conversions/src/main/java/com/baeldung/deserialization/ItemDeserializerOnClass.java

@@ -1,9 +1,7 @@
-package com.baeldung.jackson.deserialization;
+package com.baeldung.deserialization;
 
 import java.io.IOException;
 
-import com.baeldung.jackson.dtos.ItemWithSerializer;
-import com.baeldung.jackson.dtos.User;
 import com.fasterxml.jackson.core.JsonParser;
 import com.fasterxml.jackson.core.JsonProcessingException;
 import com.fasterxml.jackson.databind.DeserializationContext;
@@ -11,7 +9,7 @@ import com.fasterxml.jackson.databind.JsonNode;
 import com.fasterxml.jackson.databind.deser.std.StdDeserializer;
 import com.fasterxml.jackson.databind.node.IntNode;
 
-public class ItemDeserializerOnClass extends StdDeserializer<ItemWithSerializer> {
+public class ItemDeserializerOnClass extends StdDeserializer<ItemWithDeserializer> {
 
     private static final long serialVersionUID = 5579141241817332594L;
 
@@ -27,7 +25,7 @@ public class ItemDeserializerOnClass extends StdDeserializer<ItemWithSerializer>
      * {"id":1,"itemNr":"theItem","owner":2}
      */
     @Override
-    public ItemWithSerializer deserialize(final JsonParser jp, final DeserializationContext ctxt) throws IOException, JsonProcessingException {
+    public ItemWithDeserializer deserialize(final JsonParser jp, final DeserializationContext ctxt) throws IOException, JsonProcessingException {
         final JsonNode node = jp.getCodec()
             .readTree(jp);
         final int id = (Integer) ((IntNode) node.get("id")).numberValue();
@@ -35,7 +33,7 @@ public class ItemDeserializerOnClass extends StdDeserializer<ItemWithSerializer>
             .asText();
         final int userId = (Integer) ((IntNode) node.get("owner")).numberValue();
 
-        return new ItemWithSerializer(id, itemName, new User(userId, null));
+        return new ItemWithDeserializer(id, itemName, new User(userId, null));
     }
 
 }

jackson-custom-conversions/src/main/java/com/baeldung/deserialization/ItemWithDeserializer.java

@@ -1,19 +1,14 @@
-package com.baeldung.jackson.dtos;
-
-import com.baeldung.jackson.deserialization.ItemDeserializerOnClass;
-import com.baeldung.jackson.serialization.ItemSerializerOnClass;
+package com.baeldung.deserialization;
 
 import com.fasterxml.jackson.databind.annotation.JsonDeserialize;
-import com.fasterxml.jackson.databind.annotation.JsonSerialize;
 
-@JsonSerialize(using = ItemSerializerOnClass.class)
 @JsonDeserialize(using = ItemDeserializerOnClass.class)
-public class ItemWithSerializer {
+public class ItemWithDeserializer {
     public final int id;
     public final String itemName;
     public final User owner;
 
-    public ItemWithSerializer(final int id, final String itemName, final User owner) {
+    public ItemWithDeserializer(final int id, final String itemName, final User owner) {
         this.id = id;
         this.itemName = itemName;
         this.owner = owner;

jackson-custom-conversions/src/main/java/com/baeldung/deserialization/Movie.java

@@ -1,4 +1,4 @@
-package com.baeldung.jackson.entities;
+package com.baeldung.deserialization;
 
 import java.util.List;
 

jackson-custom-conversions/src/main/java/com/baeldung/deserialization/User.java

@@ -0,0 +1,26 @@
+package com.baeldung.deserialization;
+
+public class User {
+    public int id;
+    public String name;
+
+    public User() {
+        super();
+    }
+
+    public User(final int id, final String name) {
+        this.id = id;
+        this.name = name;
+    }
+
+    // API
+
+    public int getId() {
+        return id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+}

jackson-custom-conversions/src/main/java/com/baeldung/serialization/Item.java

@@ -1,4 +1,4 @@
-package com.baeldung.jackson.dtos;
+package com.baeldung.serialization;
 
 public class Item {
     public int id;

jackson-custom-conversions/src/main/java/com/baeldung/serialization/ItemSerializer.java

@@ -1,8 +1,7 @@
-package com.baeldung.jackson.serialization;
+package com.baeldung.serialization;
 
 import java.io.IOException;
 
-import com.baeldung.jackson.dtos.Item;
 import com.fasterxml.jackson.core.JsonGenerator;
 import com.fasterxml.jackson.core.JsonProcessingException;
 import com.fasterxml.jackson.databind.SerializerProvider;

jackson-custom-conversions/src/main/java/com/baeldung/serialization/ItemSerializerOnClass.java

@@ -1,8 +1,7 @@
-package com.baeldung.jackson.serialization;
+package com.baeldung.serialization;
 
 import java.io.IOException;
 
-import com.baeldung.jackson.dtos.ItemWithSerializer;
 import com.fasterxml.jackson.core.JsonGenerator;
 import com.fasterxml.jackson.core.JsonProcessingException;
 import com.fasterxml.jackson.databind.SerializerProvider;

jackson-custom-conversions/src/main/java/com/baeldung/serialization/ItemWithSerializer.java

@@ -1,13 +1,9 @@
-package com.baeldung.jackson.dtos;
-
-import com.baeldung.jackson.deserialization.ItemDeserializerOnClass;
-import com.baeldung.jackson.serialization.ItemSerializerOnClass;
+package com.baeldung.serialization;
 
 import com.fasterxml.jackson.databind.annotation.JsonDeserialize;
 import com.fasterxml.jackson.databind.annotation.JsonSerialize;
 
 @JsonSerialize(using = ItemSerializerOnClass.class)
-@JsonDeserialize(using = ItemDeserializerOnClass.class)
 public class ItemWithSerializer {
     public final int id;
     public final String itemName;

jackson-custom-conversions/src/main/java/com/baeldung/serialization/User.java

@@ -1,4 +1,4 @@
-package com.baeldung.jackson.dtos;
+package com.baeldung.serialization;
 
 public class User {
     public int id;

jackson-custom-conversions/src/main/java/com/baeldung/skipfields/Address.java

@@ -1,4 +1,4 @@
-package com.baeldung.jackson.dynamicIgnore;
+package com.baeldung.skipfields;
 
 public class Address implements Hidable {
     private String city;

jackson-custom-conversions/src/main/java/com/baeldung/skipfields/Hidable.java

@@ -1,4 +1,4 @@
-package com.baeldung.jackson.dynamicIgnore;
+package com.baeldung.skipfields;
 
 import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
 

jackson-custom-conversions/src/main/java/com/baeldung/skipfields/HidableSerializer.java

@@ -1,4 +1,4 @@
-package com.baeldung.jackson.dynamicIgnore;
+package com.baeldung.skipfields;
 
 import java.io.IOException;
 

jackson-custom-conversions/src/main/java/com/baeldung/skipfields/MyDtoWithFilter.java

@@ -1,4 +1,4 @@
-package com.baeldung.jackson.dtos;
+package com.baeldung.skipfields;
 
 import com.fasterxml.jackson.annotation.JsonFilter;
 

jackson-custom-conversions/src/main/java/com/baeldung/skipfields/Person.java

@@ -1,4 +1,4 @@
-package com.baeldung.jackson.dynamicIgnore;
+package com.baeldung.skipfields;
 
 public class Person implements Hidable {
     private String name;

jackson-custom-conversions/src/test/java/com/baeldung/defaultserializercustomserializer/CallingDefaultSerializerUnitTest.java

@@ -1,4 +1,4 @@
-package com.baeldung.jackson.serialization.custom.serializer;
+package com.baeldung.defaultserializercustomserializer;
 
 import static org.junit.Assert.assertTrue;
 import static org.junit.jupiter.api.Assertions.assertEquals;
@@ -14,8 +14,6 @@ import java.util.Map;
 import org.junit.Before;
 import org.junit.Test;
 
-import com.baeldung.jackson.entities.File;
-import com.baeldung.jackson.entities.Folder;
 import com.fasterxml.jackson.core.type.TypeReference;
 import com.fasterxml.jackson.databind.ObjectMapper;
 import com.fasterxml.jackson.databind.module.SimpleModule;

jackson-custom-conversions/src/test/java/com/baeldung/deserialization/CustomDeserializationUnitTest.java

@@ -1,4 +1,16 @@
-package com.baeldung.jackson.test;
+package com.baeldung.deserialization;
+
+import com.fasterxml.jackson.core.JsonParseException;
+import com.fasterxml.jackson.databind.DeserializationFeature;
+import com.fasterxml.jackson.databind.JsonMappingException;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.SerializationFeature;
+import com.fasterxml.jackson.databind.module.SimpleModule;
+import org.junit.Test;
+
+import java.io.IOException;
+import java.time.ZoneId;
+import java.time.ZonedDateTime;
 
 import static org.hamcrest.CoreMatchers.is;
 import static org.hamcrest.CoreMatchers.not;
@@ -7,53 +19,7 @@ import static org.hamcrest.Matchers.notNullValue;
 import static org.junit.Assert.assertNotNull;
 import static org.junit.Assert.assertThat;
 
-import java.io.IOException;
-import java.time.ZoneId;
-import java.time.ZonedDateTime;
-
-import org.junit.Test;
-
-import com.baeldung.jackson.deserialization.ItemDeserializer;
-import com.baeldung.jackson.dtos.Item;
-import com.baeldung.jackson.dtos.ItemWithSerializer;
-import com.baeldung.jackson.dtos.MyDto;
-import com.fasterxml.jackson.core.JsonFactory;
-import com.fasterxml.jackson.core.JsonParseException;
-import com.fasterxml.jackson.core.JsonParser;
-import com.fasterxml.jackson.databind.DeserializationFeature;
-import com.fasterxml.jackson.databind.JsonMappingException;
-import com.fasterxml.jackson.databind.JsonNode;
-import com.fasterxml.jackson.databind.ObjectMapper;
-import com.fasterxml.jackson.databind.SerializationFeature;
-import com.fasterxml.jackson.databind.exc.UnrecognizedPropertyException;
-import com.fasterxml.jackson.databind.module.SimpleModule;
-
-public class JacksonDeserializationUnitTest {
-
-    @Test
-    public final void whenDeserializingAJsonToAClass_thenCorrect() throws JsonParseException, JsonMappingException, IOException {
-        final String jsonAsString = "{\"stringValue\":\"a\",\"intValue\":1,\"booleanValue\":true}";
-        final ObjectMapper mapper = new ObjectMapper();
-
-        final MyDto readValue = mapper.readValue(jsonAsString, MyDto.class);
-
-        assertNotNull(readValue);
-        assertThat(readValue.getStringValue(), equalTo("a"));
-    }
-
-    @Test
-    public final void givenNotAllFieldsHaveValuesInJson_whenDeserializingAJsonToAClass_thenCorrect() throws JsonParseException, JsonMappingException, IOException {
-        final String jsonAsString = "{\"stringValue\":\"a\",\"booleanValue\":true}";
-        final ObjectMapper mapper = new ObjectMapper();
-
-        final MyDto readValue = mapper.readValue(jsonAsString, MyDto.class);
-
-        assertNotNull(readValue);
-        assertThat(readValue.getStringValue(), equalTo("a"));
-        assertThat(readValue.isBooleanValue(), equalTo(true));
-    }
-
-    // custom deserialization
+public class CustomDeserializationUnitTest {
 
     @Test
     public final void whenDeserializingTheStandardRepresentation_thenCorrect() throws JsonParseException, JsonMappingException, IOException {
@@ -80,7 +46,7 @@ public class JacksonDeserializationUnitTest {
     public final void givenDeserializerIsOnClass_whenDeserializingCustomRepresentation_thenCorrect() throws JsonParseException, JsonMappingException, IOException {
         final String json = "{\"id\":1,\"itemName\":\"theItem\",\"owner\":2}";
 
-        final ItemWithSerializer readValue = new ObjectMapper().readValue(json, ItemWithSerializer.class);
+        final ItemWithDeserializer readValue = new ObjectMapper().readValue(json, ItemWithDeserializer.class);
         assertThat(readValue, notNullValue());
     }
 

jackson-custom-conversions/src/test/java/com/baeldung/serialization/CustomSerializationUnitTest.java

@@ -1,4 +1,4 @@
-package com.baeldung.jackson.test;
+package com.baeldung.serialization;
 
 import static org.hamcrest.Matchers.containsString;
 import static org.hamcrest.Matchers.not;
@@ -7,12 +7,6 @@ import static org.junit.Assert.assertThat;
 
 import java.io.IOException;
 import java.util.List;
-
-import com.baeldung.jackson.dtos.User;
-import com.baeldung.jackson.dtos.Item;
-import com.baeldung.jackson.dtos.ItemWithSerializer;
-import com.baeldung.jackson.dtos.MyDto;
-import com.baeldung.jackson.serialization.ItemSerializer;
 import org.junit.Test;
 
 import com.fasterxml.jackson.annotation.JsonAutoDetect.Visibility;
@@ -24,21 +18,7 @@ import com.fasterxml.jackson.databind.ObjectMapper;
 import com.fasterxml.jackson.databind.module.SimpleModule;
 import com.google.common.collect.Lists;
 
-public class JacksonSerializationUnitTest {
-
-    // tests - multiple entities to json
-
-    @Test
-    public final void whenDtoIsSerialized_thenCorrect() throws JsonParseException, IOException {
-        final List<MyDto> listOfDtos = Lists.newArrayList(new MyDto("a", 1, true), new MyDto("bc", 3, false));
-
-        final ObjectMapper mapper = new ObjectMapper();
-        final String dtosAsString = mapper.writeValueAsString(listOfDtos);
-
-        System.out.println(dtosAsString);
-    }
-
-    // tests - custom serializer
+public class CustomSerializationUnitTest {
 
     @Test
     public final void whenSerializing_thenNoExceptions() throws JsonGenerationException, JsonMappingException, IOException {

jackson-custom-conversions/src/test/java/com/baeldung/skipfields/IgnoreFieldsWithFilterUnitTest.java

@@ -0,0 +1,89 @@
+package com.baeldung.skipfields;
+
+import com.fasterxml.jackson.annotation.JsonInclude.Include;
+import com.fasterxml.jackson.core.JsonGenerator;
+import com.fasterxml.jackson.core.JsonParseException;
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.SerializerProvider;
+import com.fasterxml.jackson.databind.ser.BeanPropertyWriter;
+import com.fasterxml.jackson.databind.ser.FilterProvider;
+import com.fasterxml.jackson.databind.ser.PropertyFilter;
+import com.fasterxml.jackson.databind.ser.PropertyWriter;
+import com.fasterxml.jackson.databind.ser.impl.SimpleBeanPropertyFilter;
+import com.fasterxml.jackson.databind.ser.impl.SimpleFilterProvider;
+import org.junit.Test;
+
+import java.io.IOException;
+
+import static org.hamcrest.Matchers.containsString;
+import static org.hamcrest.Matchers.not;
+import static org.junit.Assert.assertThat;
+
+public class IgnoreFieldsWithFilterUnitTest {
+
+    @Test
+    public final void givenTypeHasFilterThatIgnoresFieldByName_whenDtoIsSerialized_thenCorrect() throws JsonParseException, IOException {
+        final ObjectMapper mapper = new ObjectMapper();
+        final SimpleBeanPropertyFilter theFilter = SimpleBeanPropertyFilter.serializeAllExcept("intValue");
+        final FilterProvider filters = new SimpleFilterProvider().addFilter("myFilter", theFilter);
+
+        final MyDtoWithFilter dtoObject = new MyDtoWithFilter();
+        dtoObject.setIntValue(12);
+
+        final String dtoAsString = mapper.writer(filters)
+            .writeValueAsString(dtoObject);
+
+        assertThat(dtoAsString, not(containsString("intValue")));
+        assertThat(dtoAsString, containsString("booleanValue"));
+        assertThat(dtoAsString, containsString("stringValue"));
+        System.out.println(dtoAsString);
+    }
+
+    @Test
+    public final void givenTypeHasFilterThatIgnoresNegativeInt_whenDtoIsSerialized_thenCorrect() throws JsonParseException, IOException {
+        final PropertyFilter theFilter = new SimpleBeanPropertyFilter() {
+            @Override
+            public final void serializeAsField(final Object pojo, final JsonGenerator jgen, final SerializerProvider provider, final PropertyWriter writer) throws Exception {
+                if (include(writer)) {
+                    if (!writer.getName()
+                        .equals("intValue")) {
+                        writer.serializeAsField(pojo, jgen, provider);
+                        return;
+                    }
+
+                    final int intValue = ((MyDtoWithFilter) pojo).getIntValue();
+                    if (intValue >= 0) {
+                        writer.serializeAsField(pojo, jgen, provider);
+                    }
+                } else if (!jgen.canOmitFields()) { // since 2.3
+                    writer.serializeAsOmittedField(pojo, jgen, provider);
+                }
+            }
+
+            @Override
+            protected final boolean include(final BeanPropertyWriter writer) {
+                return true;
+            }
+
+            @Override
+            protected final boolean include(final PropertyWriter writer) {
+                return true;
+            }
+        };
+        final FilterProvider filters = new SimpleFilterProvider().addFilter("myFilter", theFilter);
+
+        final MyDtoWithFilter dtoObject = new MyDtoWithFilter();
+        dtoObject.setIntValue(-1);
+
+        final ObjectMapper mapper = new ObjectMapper();
+        final String dtoAsString = mapper.writer(filters)
+            .writeValueAsString(dtoObject);
+
+        assertThat(dtoAsString, not(containsString("intValue")));
+        assertThat(dtoAsString, containsString("booleanValue"));
+        assertThat(dtoAsString, containsString("stringValue"));
+        System.out.println(dtoAsString);
+    }
+
+}

jackson-custom-conversions/src/test/java/com/baeldung/skipfields/JacksonDynamicIgnoreUnitTest.java

@@ -1,14 +1,10 @@
-package com.baeldung.jackson.test;
+package com.baeldung.skipfields;
 
 import static org.junit.Assert.assertFalse;
 import static org.junit.Assert.assertTrue;
 
 import java.util.Arrays;
 
-import com.baeldung.jackson.dynamicIgnore.Address;
-import com.baeldung.jackson.dynamicIgnore.HidableSerializer;
-import com.baeldung.jackson.dynamicIgnore.Person;
-import com.baeldung.jackson.dynamicIgnore.Hidable;
 import org.junit.Before;
 import org.junit.Test;
 

jackson-simple/README.md

@@ -6,4 +6,14 @@ This module contains articles about Jackson that are also part of the Jackson Eb
 
 The "REST With Spring" Classes: http://bit.ly/restwithspring
 
-### Relevant Articles: 
+### Relevant Articles:
+- [Jackson Annotation Examples](https://www.baeldung.com/jackson-annotations)
+- [Intro to the Jackson ObjectMapper](https://www.baeldung.com/jackson-object-mapper-tutorial)
+- [Jackson Ignore Properties on Marshalling](https://www.baeldung.com/jackson-ignore-properties-on-serialization)
+- [Ignore Null Fields with Jackson](https://www.baeldung.com/jackson-ignore-null-fields)
+- [Jackson – Change Name of Field](https://www.baeldung.com/jackson-name-of-property)
+- [Jackson Unmarshalling JSON with Unknown Properties](https://www.baeldung.com/jackson-deserialize-json-unknown-properties)
+
+### NOTE: 
+
+Since this is a module tied to an e-book, it should **not** be used to store the code for any further article.

jackson-simple/pom.xml

@@ -21,7 +21,6 @@
         </dependency>
 
         <!-- test scoped -->
-
         <dependency>
             <groupId>org.assertj</groupId>
             <artifactId>assertj-core</artifactId>

jackson-simple/src/main/java/com/baeldung/jackson/annotation/ignore/MyMixInForIgnoreType.java

@@ -1,4 +1,4 @@
-package com.baeldung.jackson.ignore.dtos;
+package com.baeldung.jackson.annotation.ignore;
 
 import com.fasterxml.jackson.annotation.JsonIgnoreType;
 

jackson-simple/src/main/java/com/baeldung/jackson/ignore/MyDto.java

@@ -1,4 +1,4 @@
-package com.baeldung.jackson.dtos;
+package com.baeldung.jackson.ignore;
 
 public class MyDto {
 

jackson-simple/src/main/java/com/baeldung/jackson/ignore/MyDtoIgnoreField.java

@@ -1,4 +1,4 @@
-package com.baeldung.jackson.ignore.dtos;
+package com.baeldung.jackson.ignore;
 
 import com.fasterxml.jackson.annotation.JsonIgnore;
 

jackson-simple/src/main/java/com/baeldung/jackson/ignore/MyDtoIgnoreFieldByName.java

@@ -1,4 +1,4 @@
-package com.baeldung.jackson.ignore.dtos;
+package com.baeldung.jackson.ignore;
 
 import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
 

jackson-simple/src/main/java/com/baeldung/jackson/ignore/MyDtoIgnoreNull.java

@@ -1,4 +1,4 @@
-package com.baeldung.jackson.ignore.dtos;
+package com.baeldung.jackson.ignore;
 
 import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.annotation.JsonInclude.Include;

jackson-simple/src/main/java/com/baeldung/jackson/ignore/MyDtoIncludeNonDefault.java

@@ -1,4 +1,4 @@
-package com.baeldung.jackson.dtos;
+package com.baeldung.jackson.ignore;
 
 import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.annotation.JsonInclude.Include;

jackson-simple/src/main/java/com/baeldung/jackson/ignore/MyDtoWithFilter.java

@@ -1,4 +1,4 @@
-package com.baeldung.jackson.ignore.dtos;
+package com.baeldung.jackson.ignore;
 
 import com.fasterxml.jackson.annotation.JsonFilter;
 

jackson-simple/src/main/java/com/baeldung/jackson/ignore/MyDtoWithSpecialField.java

@@ -1,4 +1,4 @@
-package com.baeldung.jackson.dtos;
+package com.baeldung.jackson.ignore;
 
 public class MyDtoWithSpecialField {
 

jackson-simple/src/main/java/com/baeldung/jackson/ignore/MyMixInForIgnoreType.java

@@ -1,4 +1,4 @@
-package com.baeldung.jackson.dtos;
+package com.baeldung.jackson.ignore;
 
 import com.fasterxml.jackson.annotation.JsonIgnoreType;