- Jackson Annotations Tutorial
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- Serialization Annotations
- Jackson - @JsonAnyGetter
- Jackson - @JsonGetter
- @JsonPropertyOrder
- Jackson - @JsonRawValue
- Jackson - @JsonValue
- Jackson - @JsonRootName
- Jackson - @JsonSerialize
- Deserialization Annotations
- Jackson - @JsonCreator
- Jackson - @JacksonInject
- Jackson - @JsonAnySetter
- Jackson - @JsonSetter
- Jackson - @JsonDeserialize
- @JsonEnumDefaultValue
- Property Inclusion Annotations
- @JsonIgnoreProperties
- Jackson - @JsonIgnore
- Jackson - @JsonIgnoreType
- Jackson - @JsonInclude
- Jackson - @JsonAutoDetect
- Type Handling Annotations
- Jackson - @JsonTypeInfo
- Jackson - @JsonSubTypes
- Jackson - @JsonTypeName
- General Annotations
- Jackson - @JsonProperty
- Jackson - @JsonFormat
- Jackson - @JsonUnwrapped
- Jackson - @JsonView
- @JsonManagedReference
- @JsonBackReference
- Jackson - @JsonIdentityInfo
- Jackson - @JsonFilter
- Miscellaneous
- Custom Annotation
- MixIn Annotations
- Disable Annotation
- Jackson Annotations Resources
- Jackson - Quick Guide
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- Jackson - Discussion
Jackson Annotations - @JsonDeserialize
@JsonDeserialize is used to specify custom deserializer to unmarshall the json object.
Example @JsonDeserialize
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.ObjectMapper; import com.fasterxml.jackson.databind.annotation.JsonDeserialize; import com.fasterxml.jackson.databind.deser.std.StdDeserializer; public class JacksonTester { public static void main(String args[]) throws ParseException{ ObjectMapper mapper = new ObjectMapper(); String jsonString = "{\"name\":\"Mark\",\"dateOfBirth\":\"20-12-1984\"}"; try { Student student = mapper .readerFor(Student.class) .readValue(jsonString); System.out.println(student.dateOfBirth); } catch (IOException e) { e.printStackTrace(); } } } class Student { public String name; @JsonDeserialize(using = CustomDateDeserializer.class) public Date dateOfBirth; } class CustomDateDeserializer extends StdDeserializer<Date> { private static final long serialVersionUID = 1L; private static SimpleDateFormat formatter = new SimpleDateFormat("dd-MM-yyyy"); public CustomDateDeserializer() { this(null); } public CustomDateDeserializer(Class<Date> t) { super(t); } @Override public Date deserialize(JsonParser parser, DeserializationContext context) throws IOException, JsonProcessingException { String date = parser.getText(); try { return formatter.parse(date); } catch (ParseException e) { e.printStackTrace(); } return null; } }
Output
Thu Dec 20 00:00:00 IST 1984
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