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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