[BAEL-13511] - Create jackson-modules parent for all related modules

2019-12-19 13:34:50 +02:00
parent 93b79e272d
commit c8f16ee116
291 changed files with 52 additions and 103 deletions
@@ -0,0 +1,36 @@
+package com.baeldung.jackson.date;
+
+import java.io.IOException;
+import java.text.ParseException;
+import java.text.SimpleDateFormat;
+import java.util.Date;
+
+import com.fasterxml.jackson.core.JsonParser;
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.DeserializationContext;
+import com.fasterxml.jackson.databind.deser.std.StdDeserializer;
+
+public class CustomDateDeserializer extends StdDeserializer<Date> {
+
+    private static final long serialVersionUID = -5451717385630622729L;
+    private SimpleDateFormat formatter = new SimpleDateFormat("dd-MM-yyyy hh:mm:ss");
+
+    public CustomDateDeserializer() {
+        this(null);
+    }
+
+    public CustomDateDeserializer(final Class<?> vc) {
+        super(vc);
+    }
+
+    @Override
+    public Date deserialize(final JsonParser jsonparser, final DeserializationContext context) throws IOException, JsonProcessingException {
+        final String date = jsonparser.getText();
+        try {
+            return formatter.parse(date);
+        } catch (final ParseException e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+}
@@ -0,0 +1,29 @@
+package com.baeldung.jackson.date;
+
+import java.io.IOException;
+import java.text.SimpleDateFormat;
+import java.util.Date;
+
+import com.fasterxml.jackson.core.JsonGenerator;
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.SerializerProvider;
+import com.fasterxml.jackson.databind.ser.std.StdSerializer;
+
+public class CustomDateSerializer extends StdSerializer<Date> {
+
+    private static final long serialVersionUID = -2894356342227378312L;
+    private SimpleDateFormat formatter = new SimpleDateFormat("dd-MM-yyyy hh:mm:ss");
+
+    public CustomDateSerializer() {
+        this(null);
+    }
+
+    public CustomDateSerializer(final Class<Date> t) {
+        super(t);
+    }
+
+    @Override
+    public void serialize(final Date value, final JsonGenerator gen, final SerializerProvider arg2) throws IOException, JsonProcessingException {
+        gen.writeString(formatter.format(value));
+    }
+}
@@ -0,0 +1,32 @@
+package com.baeldung.jackson.date;
+
+import java.io.IOException;
+
+import org.joda.time.DateTime;
+import org.joda.time.format.DateTimeFormat;
+import org.joda.time.format.DateTimeFormatter;
+
+import com.fasterxml.jackson.core.JsonGenerator;
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.SerializerProvider;
+import com.fasterxml.jackson.databind.ser.std.StdSerializer;
+
+public class CustomDateTimeSerializer extends StdSerializer<DateTime> {
+
+    private static final long serialVersionUID = -3927232057990121460L;
+
+    public CustomDateTimeSerializer() {
+        this(null);
+    }
+
+    public CustomDateTimeSerializer(final Class<DateTime> t) {
+        super(t);
+    }
+
+    private static DateTimeFormatter formatter = DateTimeFormat.forPattern("yyyy-MM-dd HH:mm");
+
+    @Override
+    public void serialize(final DateTime value, final JsonGenerator gen, final SerializerProvider arg2) throws IOException, JsonProcessingException {
+        gen.writeString(formatter.print(value));
+    }
+}
@@ -0,0 +1,29 @@
+package com.baeldung.jackson.date;
+
+import java.io.IOException;
+import java.time.LocalDateTime;
+import java.time.format.DateTimeFormatter;
+
+import com.fasterxml.jackson.core.JsonGenerator;
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.SerializerProvider;
+import com.fasterxml.jackson.databind.ser.std.StdSerializer;
+
+public class CustomLocalDateTimeSerializer extends StdSerializer<LocalDateTime> {
+
+    private static final long serialVersionUID = -7449444168934819290L;
+    private static DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm");
+
+    public CustomLocalDateTimeSerializer() {
+        this(null);
+    }
+
+    public CustomLocalDateTimeSerializer(final Class<LocalDateTime> t) {
+        super(t);
+    }
+
+    @Override
+    public void serialize(final LocalDateTime value, final JsonGenerator gen, final SerializerProvider arg2) throws IOException, JsonProcessingException {
+        gen.writeString(formatter.format(value));
+    }
+}
@@ -0,0 +1,25 @@
+package com.baeldung.jackson.date;
+
+import java.util.Date;
+
+public class Event {
+    public String name;
+    public Date eventDate;
+
+    public Event() {
+        super();
+    }
+
+    public Event(final String name, final Date eventDate) {
+        this.name = name;
+        this.eventDate = eventDate;
+    }
+
+    public Date getEventDate() {
+        return eventDate;
+    }
+
+    public String getName() {
+        return name;
+    }
+}
@@ -0,0 +1,29 @@
+package com.baeldung.jackson.date;
+
+import java.util.Date;
+
+import com.fasterxml.jackson.annotation.JsonFormat;
+
+public class EventWithFormat {
+    public String name;
+
+    @JsonFormat(shape = JsonFormat.Shape.STRING, pattern = "dd-MM-yyyy hh:mm:ss")
+    public Date eventDate;
+
+    public EventWithFormat() {
+        super();
+    }
+
+    public EventWithFormat(final String name, final Date eventDate) {
+        this.name = name;
+        this.eventDate = eventDate;
+    }
+
+    public Date getEventDate() {
+        return eventDate;
+    }
+
+    public String getName() {
+        return name;
+    }
+}
@@ -0,0 +1,29 @@
+package com.baeldung.jackson.date;
+
+import org.joda.time.DateTime;
+
+import com.fasterxml.jackson.databind.annotation.JsonSerialize;
+
+public class EventWithJodaTime {
+    public String name;
+
+    @JsonSerialize(using = CustomDateTimeSerializer.class)
+    public DateTime eventDate;
+
+    public EventWithJodaTime() {
+        super();
+    }
+
+    public EventWithJodaTime(final String name, final DateTime eventDate) {
+        this.name = name;
+        this.eventDate = eventDate;
+    }
+
+    public DateTime getEventDate() {
+        return eventDate;
+    }
+
+    public String getName() {
+        return name;
+    }
+}
@@ -0,0 +1,29 @@
+package com.baeldung.jackson.date;
+
+import java.time.LocalDateTime;
+
+import com.fasterxml.jackson.databind.annotation.JsonSerialize;
+
+public class EventWithLocalDateTime {
+    public String name;
+
+    @JsonSerialize(using = CustomLocalDateTimeSerializer.class)
+    public LocalDateTime eventDate;
+
+    public EventWithLocalDateTime() {
+        super();
+    }
+
+    public EventWithLocalDateTime(final String name, final LocalDateTime eventDate) {
+        this.name = name;
+        this.eventDate = eventDate;
+    }
+
+    public LocalDateTime getEventDate() {
+        return eventDate;
+    }
+
+    public String getName() {
+        return name;
+    }
+}
@@ -0,0 +1,31 @@
+package com.baeldung.jackson.date;
+
+import java.util.Date;
+
+import com.fasterxml.jackson.databind.annotation.JsonDeserialize;
+import com.fasterxml.jackson.databind.annotation.JsonSerialize;
+
+public class EventWithSerializer {
+    public String name;
+
+    @JsonDeserialize(using = CustomDateDeserializer.class)
+    @JsonSerialize(using = CustomDateSerializer.class)
+    public Date eventDate;
+
+    public EventWithSerializer() {
+        super();
+    }
+
+    public EventWithSerializer(final String name, final Date eventDate) {
+        this.name = name;
+        this.eventDate = eventDate;
+    }
+
+    public Date getEventDate() {
+        return eventDate;
+    }
+
+    public String getName() {
+        return name;
+    }
+}
@@ -0,0 +1,15 @@
+package com.baeldung.jackson.enums.deserialization;
+
+public class City {
+
+    private Distance distance;
+
+    public Distance getDistance() {
+        return distance;
+    }
+
+    public void setDistance(Distance distance) {
+        this.distance = distance;
+    }
+    
+}
@@ -0,0 +1,31 @@
+package com.baeldung.jackson.enums.deserialization;
+
+public enum Distance {
+
+    KILOMETER("km", 1000), MILE("miles", 1609.34), METER("meters", 1), INCH("inches", 0.0254), CENTIMETER("cm", 0.01), MILLIMETER("mm", 0.001);
+
+    private String unit;
+    private double meters;
+
+    private Distance(String unit, double meters) {
+        this.unit = unit;
+        this.meters = meters;
+    }
+
+    public void setMeters(double meters) {
+        this.meters = meters;
+    }
+    
+    public double getMeters() {
+        return meters;
+    }
+
+    public String getUnit() {
+        return unit;
+    }
+
+    public void setUnit(String unit) {
+        this.unit = unit;
+    }
+}
+
@@ -0,0 +1,15 @@
+package com.baeldung.jackson.enums.deserialization.customdeserializer;
+
+public class City {
+
+    private Distance distance;
+
+    public Distance getDistance() {
+        return distance;
+    }
+
+    public void setDistance(Distance distance) {
+        this.distance = distance;
+    }
+    
+}
@@ -0,0 +1,42 @@
+package com.baeldung.jackson.enums.deserialization.customdeserializer;
+
+import java.io.IOException;
+import com.fasterxml.jackson.core.JsonParser;
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.DeserializationContext;
+import com.fasterxml.jackson.databind.JsonNode;
+import com.fasterxml.jackson.databind.deser.std.StdDeserializer;
+
+public class CustomEnumDeserializer extends StdDeserializer<Distance> {
+
+    private static final long serialVersionUID = -1166032307856492833L;
+
+    public CustomEnumDeserializer() {
+        this(null);
+    }
+
+    public CustomEnumDeserializer(Class<?> c) {
+        super(c);
+    }
+
+    @Override
+    public Distance deserialize(JsonParser jsonParser, DeserializationContext ctxt) throws IOException, JsonProcessingException {
+
+        JsonNode node = jsonParser.getCodec().readTree(jsonParser);
+
+        String unit = node.get("unit").asText();
+        double meters = node.get("meters").asDouble();
+
+        for (Distance distance : Distance.values()) {
+           
+            if (distance.getUnit().equals(unit) && 
+                Double.compare(distance.getMeters(), meters) == 0) {
+                
+                return distance;
+            }
+        }
+
+        return null;
+    }
+
+}
@@ -0,0 +1,33 @@
+package com.baeldung.jackson.enums.deserialization.customdeserializer;
+
+import com.fasterxml.jackson.databind.annotation.JsonDeserialize;
+
+@JsonDeserialize(using = CustomEnumDeserializer.class)
+public enum Distance {
+
+    KILOMETER("km", 1000), MILE("miles", 1609.34), METER("meters", 1), INCH("inches", 0.0254), CENTIMETER("cm", 0.01), MILLIMETER("mm", 0.001);
+
+    private String unit;
+    private double meters;
+
+    private Distance(String unit, double meters) {
+        this.unit = unit;
+        this.meters = meters;
+    }
+
+    public double getMeters() {
+        return meters;
+    }
+
+    public void setMeters(double meters) {
+        this.meters = meters;
+    }
+    
+    public String getUnit() {
+        return unit;
+    }
+
+    public void setUnit(String unit) {
+        this.unit = unit;
+    }
+}
@@ -0,0 +1,15 @@
+package com.baeldung.jackson.enums.deserialization.jsoncreator;
+
+public class City {
+
+    private Distance distance;
+
+    public Distance getDistance() {
+        return distance;
+    }
+
+    public void setDistance(Distance distance) {
+        this.distance = distance;
+    }
+    
+}
@@ -0,0 +1,48 @@
+package com.baeldung.jackson.enums.deserialization.jsoncreator;
+
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+public enum Distance {
+
+    KILOMETER("km", 1000), MILE("miles", 1609.34), METER("meters", 1), INCH("inches", 0.0254), CENTIMETER("cm", 0.01), MILLIMETER("mm", 0.001);
+
+    private String unit;
+    private double meters;
+
+    private Distance(String unit, double meters) {
+        this.unit = unit;
+        this.meters = meters;
+    }
+
+    public void setMeters(double meters) {
+        this.meters = meters;
+    }
+    
+    public double getMeters() {
+        return meters;
+    }
+
+    public String getUnit() {
+        return unit;
+    }
+
+    public void setUnit(String unit) {
+        this.unit = unit;
+    }
+
+    @JsonCreator
+    public static Distance forValues(@JsonProperty("unit") String unit, @JsonProperty("meters") double meters) {
+
+        for (Distance distance : Distance.values()) {
+            if (distance.unit.equals(unit) && Double.compare(distance.meters, meters) == 0) {
+
+                return distance;
+            }
+        }
+
+        return null;
+
+    }
+}
+
@@ -0,0 +1,15 @@
+package com.baeldung.jackson.enums.deserialization.jsonproperty;
+
+public class City {
+    
+    private Distance distance;
+
+    public Distance getDistance() {
+        return distance;
+    }
+
+    public void setDistance(Distance distance) {
+        this.distance = distance;
+    }
+    
+}
@@ -0,0 +1,51 @@
+package com.baeldung.jackson.enums.deserialization.jsonproperty;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+public enum Distance {
+
+    @JsonProperty("distance-in-km")
+    KILOMETER("km", 1000), 
+    
+    @JsonProperty("distance-in-miles")
+    MILE("miles", 1609.34),
+    
+    @JsonProperty("distance-in-meters")
+    METER("meters", 1), 
+    
+    @JsonProperty("distance-in-inches")
+    INCH("inches", 0.0254), 
+    
+    @JsonProperty("distance-in-cm")
+    CENTIMETER("cm", 0.01), 
+    
+    @JsonProperty("distance-in-mm")
+    MILLIMETER("mm", 0.001);
+
+    private String unit;
+    private double meters;
+
+    private Distance(String unit, double meters) {
+        this.unit = unit;
+        this.meters = meters;
+    }
+
+    public void setMeters(double meters) {
+        this.meters = meters;
+    }
+    
+    public double getMeters() {
+        return meters;
+    }
+
+    public String getUnit() {
+        return unit;
+    }
+
+    public void setUnit(String unit) {
+        this.unit = unit;
+    }
+
+}
+
+
@@ -0,0 +1,15 @@
+package com.baeldung.jackson.enums.deserialization.jsonvalue;
+
+public class City {
+    
+    private Distance distance;
+
+    public Distance getDistance() {
+        return distance;
+    }
+
+    public void setDistance(Distance distance) {
+        this.distance = distance;
+    }
+    
+}
@@ -0,0 +1,35 @@
+package com.baeldung.jackson.enums.deserialization.jsonvalue;
+
+import com.fasterxml.jackson.annotation.JsonValue;
+
+public enum Distance {
+
+    KILOMETER("km", 1000), MILE("miles", 1609.34), METER("meters", 1), INCH("inches", 0.0254), CENTIMETER("cm", 0.01), MILLIMETER("mm", 0.001);
+
+    private String unit;
+    private double meters;
+
+    private Distance(String unit, double meters) {
+        this.unit = unit;
+        this.meters = meters;
+    }
+
+    public void setMeters(double meters) {
+        this.meters = meters;
+    }
+    
+    @JsonValue
+    public double getMeters() {
+        return meters;
+    }
+
+    public String getUnit() {
+        return unit;
+    }
+
+    public void setUnit(String unit) {
+        this.unit = unit;
+    }
+
+}
+
@@ -0,0 +1,54 @@
+package com.baeldung.jackson.enums.serialization;
+
+import com.baeldung.jackson.enums.serialization.DistanceSerializer;
+import com.fasterxml.jackson.databind.annotation.JsonSerialize;
+
+/**
+ * Use  @JsonFormat to handle representation of Enum as JSON (available since Jackson 2.1.2)
+ * Use @JsonSerialize to configure a custom Jackson serializer
+ */
+// @JsonFormat(shape = JsonFormat.Shape.OBJECT)
+@JsonSerialize(using = DistanceSerializer.class)
+public enum Distance {
+    KILOMETER("km", 1000), MILE("miles", 1609.34), METER("meters", 1), INCH("inches", 0.0254), CENTIMETER("cm", 0.01), MILLIMETER("mm", 0.001);
+
+    private String unit;
+    private final double meters;
+
+    private Distance(String unit, double meters) {
+        this.unit = unit;
+        this.meters = meters;
+    }
+
+    /**
+     * Use @JsonValue to control marshalling output for an enum
+     */
+    // @JsonValue
+    public double getMeters() {
+        return meters;
+    }
+
+    public String getUnit() {
+        return unit;
+    }
+
+    public void setUnit(String unit) {
+        this.unit = unit;
+    }
+
+    /**
+     * Usage example: Distance.MILE.convertFromMeters(1205.5);
+     */
+    public double convertFromMeters(double distanceInMeters) {
+        return distanceInMeters / meters;
+
+    }
+
+    /**
+     * Usage example: Distance.MILE.convertToMeters(0.5);
+     */
+    public double convertToMeters(double distanceInMeters) {
+        return distanceInMeters * meters;
+    }
+
+}
@@ -0,0 +1,32 @@
+package com.baeldung.jackson.enums.serialization;
+
+import java.io.IOException;
+
+import com.fasterxml.jackson.core.JsonGenerator;
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.SerializerProvider;
+import com.fasterxml.jackson.databind.ser.std.StdSerializer;
+
+public class DistanceSerializer extends StdSerializer<Distance> {
+
+    private static final long serialVersionUID = 1376504304439963619L;
+
+    public DistanceSerializer() {
+        super(Distance.class);
+    }
+
+    public DistanceSerializer(Class<Distance> t) {
+        super(t);
+    }
+
+    public void serialize(Distance distance, JsonGenerator generator, SerializerProvider provider) throws IOException, JsonProcessingException {
+        generator.writeStartObject();
+        generator.writeFieldName("name");
+        generator.writeString(distance.name());
+        generator.writeFieldName("unit");
+        generator.writeString(distance.getUnit());
+        generator.writeFieldName("meters");
+        generator.writeNumber(distance.getMeters());
+        generator.writeEndObject();
+    }
+}
@@ -0,0 +1,26 @@
+package com.baeldung.jackson.enums.withEnum;
+
+public enum DistanceEnumSimple {
+    KILOMETER("km", 1000), MILE("miles", 1609.34), METER("meters", 1), INCH("inches", 0.0254), CENTIMETER("cm", 0.01), MILLIMETER("mm", 0.001);
+
+    private String unit;
+    private final double meters;
+
+    private DistanceEnumSimple(String unit, double meters) {
+        this.unit = unit;
+        this.meters = meters;
+    }
+
+    public double getMeters() {
+        return meters;
+    }
+
+    public String getUnit() {
+        return unit;
+    }
+
+    public void setUnit(String unit) {
+        this.unit = unit;
+    }
+
+}
@@ -0,0 +1,29 @@
+package com.baeldung.jackson.enums.withEnum;
+
+import com.fasterxml.jackson.annotation.JsonFormat;
+
+@JsonFormat(shape = JsonFormat.Shape.OBJECT)
+public enum DistanceEnumWithJsonFormat {
+    KILOMETER("km", 1000), MILE("miles", 1609.34), METER("meters", 1), INCH("inches", 0.0254), CENTIMETER("cm", 0.01), MILLIMETER("mm", 0.001);
+
+    private String unit;
+    private final double meters;
+
+    private DistanceEnumWithJsonFormat(String unit, double meters) {
+        this.unit = unit;
+        this.meters = meters;
+    }
+
+    public double getMeters() {
+        return meters;
+    }
+
+    public String getUnit() {
+        return unit;
+    }
+
+    public void setUnit(String unit) {
+        this.unit = unit;
+    }
+
+}
@@ -0,0 +1,29 @@
+package com.baeldung.jackson.enums.withEnum;
+
+import com.fasterxml.jackson.annotation.JsonValue;
+
+public enum DistanceEnumWithValue {
+    KILOMETER("km", 1000), MILE("miles", 1609.34), METER("meters", 1), INCH("inches", 0.0254), CENTIMETER("cm", 0.01), MILLIMETER("mm", 0.001);
+
+    private String unit;
+    private final double meters;
+
+    private DistanceEnumWithValue(String unit, double meters) {
+        this.unit = unit;
+        this.meters = meters;
+    }
+
+    @JsonValue
+    public double getMeters() {
+        return meters;
+    }
+
+    public String getUnit() {
+        return unit;
+    }
+
+    public void setUnit(String unit) {
+        this.unit = unit;
+    }
+
+}
@@ -0,0 +1,59 @@
+package com.baeldung.jackson.enums.withEnum;
+
+import com.baeldung.jackson.enums.serialization.Distance;
+
+public class MyDtoWithEnumCustom {
+
+    private String stringValue;
+    private int intValue;
+    private boolean booleanValue;
+    private Distance type;
+
+    public MyDtoWithEnumCustom() {
+        super();
+    }
+
+    public MyDtoWithEnumCustom(final String stringValue, final int intValue, final boolean booleanValue, final Distance type) {
+        super();
+
+        this.stringValue = stringValue;
+        this.intValue = intValue;
+        this.booleanValue = booleanValue;
+        this.type = type;
+    }
+
+    // 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;
+    }
+
+    public Distance getType() {
+        return type;
+    }
+
+    public void setType(final Distance type) {
+        this.type = type;
+    }
+
+}
@@ -0,0 +1,57 @@
+package com.baeldung.jackson.enums.withEnum;
+
+public class MyDtoWithEnumJsonFormat {
+
+    private String stringValue;
+    private int intValue;
+    private boolean booleanValue;
+    private DistanceEnumWithJsonFormat distanceType;
+
+    public MyDtoWithEnumJsonFormat() {
+        super();
+    }
+
+    public MyDtoWithEnumJsonFormat(final String stringValue, final int intValue, final boolean booleanValue, final DistanceEnumWithJsonFormat type) {
+        super();
+
+        this.stringValue = stringValue;
+        this.intValue = intValue;
+        this.booleanValue = booleanValue;
+        this.distanceType = type;
+    }
+
+    // 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;
+    }
+
+    public DistanceEnumWithJsonFormat getDistanceType() {
+        return distanceType;
+    }
+
+    public void setDistanceType(final DistanceEnumWithJsonFormat type) {
+        this.distanceType = type;
+    }
+
+}
@@ -0,0 +1,47 @@
+package com.baeldung.jackson.field;
+
+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 getBooleanValue() {
+        return booleanValue;
+    }
+
+    public void setBooleanValue(final boolean booleanValue) {
+        this.booleanValue = booleanValue;
+    }
+
+}
@@ -0,0 +1,23 @@
+package com.baeldung.jackson.field;
+
+public class MyDtoAccessLevel {
+
+    private String stringValue;
+    int intValue;
+    protected float floatValue;
+    public boolean booleanValue;
+
+    public MyDtoAccessLevel() {
+        super();
+    }
+
+    public MyDtoAccessLevel(final String stringValue, final int intValue, final float floatValue, final boolean booleanValue) {
+        super();
+
+        this.stringValue = stringValue;
+        this.intValue = intValue;
+        this.floatValue = floatValue;
+        this.booleanValue = booleanValue;
+    }
+
+}
@@ -0,0 +1,25 @@
+package com.baeldung.jackson.field;
+
+public class MyDtoWithGetter {
+
+    private String stringValue;
+    private int intValue;
+
+    public MyDtoWithGetter() {
+        super();
+    }
+
+    public MyDtoWithGetter(final String stringValue, final int intValue) {
+        super();
+
+        this.stringValue = stringValue;
+        this.intValue = intValue;
+    }
+
+    // API
+
+    public String getStringValue() {
+        return stringValue;
+    }
+
+}
@@ -0,0 +1,29 @@
+package com.baeldung.jackson.field;
+
+public class MyDtoWithSetter {
+
+    private int intValue;
+    public boolean booleanValue;
+
+    public MyDtoWithSetter() {
+        super();
+    }
+
+    public MyDtoWithSetter(final int intValue, final boolean booleanValue) {
+        super();
+
+        this.intValue = intValue;
+        this.booleanValue = booleanValue;
+    }
+
+    // API
+
+    public void setIntValue(final int intValue) {
+        this.intValue = intValue;
+    }
+
+    public int accessIntValue() {
+        return intValue;
+    }
+
+}
@@ -0,0 +1,24 @@
+package com.baeldung.jackson.immutable;
+
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+public class Employee {
+
+    private final long id;
+    private final String name;
+
+    @JsonCreator(mode = JsonCreator.Mode.PROPERTIES)
+    public Employee(@JsonProperty("id") long id, @JsonProperty("name") String name) {
+        this.id = id;
+        this.name = name;
+    }
+
+    public long getId() {
+        return id;
+    }
+
+    public String getName() {
+        return name;
+    }
+}
@@ -0,0 +1,44 @@
+package com.baeldung.jackson.immutable;
+
+import com.fasterxml.jackson.databind.annotation.JsonDeserialize;
+import com.fasterxml.jackson.databind.annotation.JsonPOJOBuilder;
+
+@JsonDeserialize(builder = Person.Builder.class)
+public class Person {
+
+    private final String name;
+    private final Integer age;
+
+    private Person(String name, Integer age) {
+        this.name = name;
+        this.age = age;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public Integer getAge() {
+        return age;
+    }
+
+    @JsonPOJOBuilder
+    static class Builder {
+        String name;
+        Integer age;
+
+        Builder withName(String name) {
+            this.name = name;
+            return this;
+        }
+
+        Builder withAge(Integer age) {
+            this.age = age;
+            return this;
+        }
+
+        Person build() {
+            return new Person(name, age);
+        }
+    }
+}
@@ -0,0 +1,23 @@
+package com.baeldung.jackson.map;
+
+import java.util.Map;
+
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.databind.annotation.JsonDeserialize;
+
+public class ClassWithAMap {
+
+    @JsonProperty("map")
+    @JsonDeserialize(keyUsing = MyPairDeserializer.class)
+    private final Map<MyPair, String> map;
+
+    @JsonCreator
+    public ClassWithAMap(Map<MyPair, String> map) {
+        this.map = map;
+    }
+
+    public Map<MyPair, String> getMap() {
+        return map;
+    }
+}
@@ -0,0 +1,80 @@
+package com.baeldung.jackson.map;
+
+import com.fasterxml.jackson.annotation.JsonValue;
+
+public class MyPair {
+
+    private String first;
+    private String second;
+
+    public MyPair(String first, String second) {
+        this.first = first;
+        this.second = second;
+    }
+
+    public MyPair(String both) {
+        String[] pairs = both.split("and");
+        this.first = pairs[0].trim();
+        this.second = pairs[1].trim();
+    }
+
+    @Override
+    @JsonValue
+    public String toString() {
+        return first + " and " + second;
+    }
+
+    @Override
+    public int hashCode() {
+        final int prime = 31;
+        int result = 1;
+        result = prime * result + ((first == null) ? 0 : first.hashCode());
+        result = prime * result + ((second == null) ? 0 : second.hashCode());
+        return result;
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj) {
+            return true;
+        }
+        if (obj == null) {
+            return false;
+        }
+        if (!(obj instanceof MyPair)) {
+            return false;
+        }
+        MyPair other = (MyPair) obj;
+        if (first == null) {
+            if (other.first != null) {
+                return false;
+            }
+        } else if (!first.equals(other.first)) {
+            return false;
+        }
+        if (second == null) {
+            if (other.second != null) {
+                return false;
+            }
+        } else if (!second.equals(other.second)) {
+            return false;
+        }
+        return true;
+    }
+
+    public String getFirst() {
+        return first;
+    }
+
+    public void setFirst(String first) {
+        this.first = first;
+    }
+
+    public String getSecond() {
+        return second;
+    }
+
+    public void setSecond(String second) {
+        this.second = second;
+    }
+}
@@ -0,0 +1,16 @@
+package com.baeldung.jackson.map;
+
+import java.io.IOException;
+
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.DeserializationContext;
+import com.fasterxml.jackson.databind.KeyDeserializer;
+
+public class MyPairDeserializer extends KeyDeserializer {
+
+    @Override
+    public MyPair deserializeKey(String key, DeserializationContext ctxt) throws IOException, JsonProcessingException {
+
+        return new MyPair(key);
+    }
+}
@@ -0,0 +1,22 @@
+package com.baeldung.jackson.map;
+
+import java.io.IOException;
+import java.io.StringWriter;
+
+import com.fasterxml.jackson.core.JsonGenerator;
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.JsonSerializer;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.SerializerProvider;
+
+public class MyPairSerializer extends JsonSerializer<MyPair> {
+
+    private final ObjectMapper mapper = new ObjectMapper();
+
+    @Override
+    public void serialize(MyPair value, JsonGenerator gen, SerializerProvider serializers) throws IOException, JsonProcessingException {
+        StringWriter writer = new StringWriter();
+        mapper.writeValue(writer, value);
+        gen.writeFieldName(writer.toString());
+    }
+}
@@ -0,0 +1,54 @@
+package com.baeldung.jackson.mapnull;
+
+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 + "]";
+    }
+
+}
@@ -0,0 +1,27 @@
+package com.baeldung.jackson.mapnull;
+
+import java.io.IOException;
+
+import com.fasterxml.jackson.core.JsonGenerator;
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.SerializerProvider;
+import com.fasterxml.jackson.databind.ser.std.StdSerializer;
+
+public class MyDtoNullKeySerializer extends StdSerializer<Object> {
+
+    private static final long serialVersionUID = -4478531309177369056L;
+
+    public MyDtoNullKeySerializer() {
+        this(null);
+    }
+
+    public MyDtoNullKeySerializer(final Class<Object> t) {
+        super(t);
+    }
+
+    @Override
+    public void serialize(final Object value, final JsonGenerator jgen, final SerializerProvider provider) throws IOException, JsonProcessingException {
+        jgen.writeFieldName("");
+    }
+
+}
@@ -0,0 +1,54 @@
+package com.baeldung.jackson.tocollection;
+
+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 + "]";
+    }
+
+}
@@ -0,0 +1,33 @@
+package com.baeldung.jackson.xml;
+
+public class Address {
+
+    String streetNumber;
+    String streetName;
+    String city;
+
+    public String getStreetNumber() {
+        return streetNumber;
+    }
+
+    public void setStreetNumber(String streetNumber) {
+        this.streetNumber = streetNumber;
+    }
+
+    public String getStreetName() {
+        return streetName;
+    }
+
+    public void setStreetName(String streetName) {
+        this.streetName = streetName;
+    }
+
+    public String getCity() {
+        return city;
+    }
+
+    public void setCity(String city) {
+        this.city = city;
+    }
+
+}
@@ -0,0 +1,47 @@
+package com.baeldung.jackson.xml;
+
+import com.fasterxml.jackson.dataformat.xml.annotation.JacksonXmlRootElement;
+
+import java.util.ArrayList;
+import java.util.List;
+
+@JacksonXmlRootElement(localName = "person")
+public final class Person {
+    private String firstName;
+    private String lastName;
+    private List<String> phoneNumbers = new ArrayList<>();
+    private List<Address> address = new ArrayList<>();
+
+    public List<Address> getAddress() {
+        return address;
+    }
+
+    public void setAddress(List<Address> address) {
+        this.address = address;
+    }
+
+    public String getFirstName() {
+        return firstName;
+    }
+
+    public void setFirstName(String firstName) {
+        this.firstName = firstName;
+    }
+
+    public String getLastName() {
+        return lastName;
+    }
+
+    public void setLastName(String lastName) {
+        this.lastName = lastName;
+    }
+
+    public List<String> getPhoneNumbers() {
+        return phoneNumbers;
+    }
+
+    public void setPhoneNumbers(List<String> phoneNumbers) {
+        this.phoneNumbers = phoneNumbers;
+    }
+
+}