
Jackson - Serialization Annotations
- Jackson - @JsonAnyGetter
- Jackson - @JsonGetter
- Jackson - @JsonPropertyOrder
- Jackson - @JsonRawValue
- Jackson - @JsonValue
- Jackson - @JsonRootName
- Jackson - @JsonSerialize
Jackson - Deserialization Annotations
- Jackson - @JsonCreator
- Jackson - @JacksonInject
- Jackson - @JsonAnySetter
- Jackson - @JsonSetter
- Jackson - @JsonDeserialize
- Jackson - @JsonEnumDefaultValue
Jackson - Property Inclusion Annotations
- Jackson - @JsonIgnoreProperties
- Jackson - @JsonIgnore
- Jackson - @JsonIgnoreType
- Jackson - @JsonInclude
- Jackson - @JsonAutoDetect
Jackson - Type Handling Annotations
Jackson - General Annotations
- Jackson - @JsonProperty
- Jackson - @JsonFormat
- Jackson - @JsonUnwrapped
- Jackson - @JsonView
- Jackson - @JsonManagedReference
- Jackson - @JsonBackReference
- Jackson - @JsonIdentityInfo
- Jackson - @JsonFilter
Jackson - Miscellaneous
Jackson - Resources
Jackson Annotations - @JsonAnyGetter
Overview
@JsonAnyGetter annotation allows a getter method to return Map which is then used to serialize the additional properties of JSON in the similar fashion as other properties.
Example - Serialization without using @JsonAnyGetter
JacksonTester.java
package com.tutorialspoint; import java.io.IOException; import java.util.HashMap; import java.util.Map; import com.fasterxml.jackson.databind.ObjectMapper; public class JacksonTester { public static void main(String args[]){ ObjectMapper mapper = new ObjectMapper(); try{ Student student = new Student(); student.add("Name", "Mark"); student.add("RollNo", "1"); String jsonString = mapper .writerWithDefaultPrettyPrinter() .writeValueAsString(student); System.out.println(jsonString); } catch (IOException e) { e.printStackTrace(); } } } class Student { private Map<String, String> properties; public Student(){ properties = new HashMap<>(); } public Map<String, String> getProperties(){ return properties; } public void add(String property, String value){ properties.put(property, value); } }
Output
Run the JacksonTester and verify the output −
{ "properties" : { "RollNo" : "1", "Name" : "Mark" } }
Example - Serialization with @JsonAnyGetter
JacksonTester.java
package com.tutorialspoint; import java.io.IOException; import java.util.HashMap; import java.util.Map; import com.fasterxml.jackson.annotation.JsonAnyGetter; import com.fasterxml.jackson.databind.ObjectMapper; public class JacksonTester { public static void main(String args[]){ ObjectMapper mapper = new ObjectMapper(); try{ Student student = new Student(); student.add("Name", "Mark"); student.add("RollNo", "1"); String jsonString = mapper .writerWithDefaultPrettyPrinter() .writeValueAsString(student); System.out.println(jsonString); } catch (IOException e) { e.printStackTrace(); } } } class Student { private Map<String, String> properties; public Student(){ properties = new HashMap<>(); } @JsonAnyGetter public Map<String, String> getProperties(){ return properties; } public void add(String property, String value){ properties.put(property, value); } }
Output
Run the JacksonTester and verify the output −
{ "RollNo" : "1", "Name" : "Mark" }
Here we're utilizing the @JsonAnyGetter to treat the properties map to act as other properties of the object.
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