@JsonSerialize: Difference between revisions

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=External=
* http://static.javadoc.io/com.fasterxml.jackson.core/jackson-databind/2.9.7/com/fasterxml/jackson/databind/annotation/JsonSerialize.html
=Internal=
=Internal=


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=Overview=
=Overview=
The annotation allows to control serialization to JSON on a field-by-field basis. The fields need to be annotated as follows:
<syntaxhighlight lang='java'>
@JsonSerialize(using = MyDateSerializer.class)
private Date timestamp;
</syntaxhighlight>
The serializer class should be provided:
<syntaxhighlight lang='java'>
public class MyDateSerializer<Date> extends JsonSerializer<Date> {
  @Override
  public void serialize(Date value, JsonGenerator gen, SerializerProvider serializers) throws IOException {
    DateFormat f = new SimpleDateFormat("MM/dd");
    String s = f.format(value);
    gen.writeString(s);
  }
}
</syntaxhighlight>
=Example=
{{External|[https://github.com/ovidiuf/playground/tree/master/json/jackson/annotations/%40JsonSerialize-for-Date @JsonSerialize Playground Example]}}

Latest revision as of 18:11, 14 November 2018

External

Internal

Overview

The annotation allows to control serialization to JSON on a field-by-field basis. The fields need to be annotated as follows:

@JsonSerialize(using = MyDateSerializer.class)
private Date timestamp;

The serializer class should be provided:

public class MyDateSerializer<Date> extends JsonSerializer<Date> {
  @Override
  public void serialize(Date value, JsonGenerator gen, SerializerProvider serializers) throws IOException {
    DateFormat f = new SimpleDateFormat("MM/dd");
    String s = f.format(value); 
    gen.writeString(s);
  }
}

Example

@JsonSerialize Playground Example