How to ignore the multiple properties of a JSON object in Java?



The @JsonIgnoreProperties Jackson annotation can be used to specify a list of properties or fields of a class to ignore. The @JsonIgnoreProperties annotation can be placed above the class declaration instead of above the individual properties or fields to ignore.

Syntax

@Target(value={ANNOTATION_TYPE,TYPE,METHOD,CONSTRUCTOR,FIELD}) @Retention(value=RUNTIME) public @interface JsonIgnoreProperties

Example

import java.io.*; import com.fasterxml.jackson.annotation.*; import com.fasterxml.jackson.databind.*; public class JsonIgnorePropertiesTest {    public static void main(String[] args) throws IOException {       Customer customer = new Customer("120", "Ravi", "Hyderabad");       System.out.println(customer);       ObjectMapper mapper = new ObjectMapper();       String jsonString = mapper.writeValueAsString(customer);       System.out.println("JSON: " + jsonString);       System.out.println("---------");       jsonString = "{\"id\":\"130\",\"name\":\"Rahul\", \"address\":\"Mumbai\"}";       System.out.println("JSON: " + jsonString);       customer = mapper.readValue(jsonString, Customer.class);       System.out.println(customer);    } } // Customer class @JsonIgnoreProperties({"id", "address"})  class Customer {    private String id;    private String name;    private String address;    public Customer() {    }    public Customer(String id, String name, String address) {       this.id = id;       this.name = name;       this.address = address;    }    public String getId() {       return id;    }    public String getName() {       return name;    }    public String getAddress() {       return address;    }    @Override    public String toString() {       return "Customer [id=" + id + ", name=" + name + ", address=" + address + "]";    } }

Output

Customer [id=120, name=Ravi, address=Hyderabad] JSON: {"name":"Ravi"} --------- JSON: {"id":"130","name":"Rahul", "address":"Mumbai"} Customer [id=null, name=Rahul, address=null]
Updated on: 2020-07-06T13:18:16+05:30

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