Want to hide some fields of an object that are being mapped to JSON by Jackson

Question

I have a User class that I want to map to JSON using Jackson.

public class User {
    private String name;
    private int age;
    prviate int securityCode;         


        

Answer 1

Adding this here because somebody else may search this again in future, like me. This Answer is an extension to the Accepted Answer

You have two options:

1. Jackson works on setters-getters of fields. So, you can just remove getter of field which you want to omit in JSON. ( If you don't need getter at other place.)

2. Or, you can use the `@JsonIgnore` [annotation of Jackson][1] on getter method of that field and you see there in no such key-value pair in resulted JSON. 

        @JsonIgnore
        public int getSecurityCode(){
           return securityCode;
        }

Actually, newer version of Jackson added READ_ONLY and WRITE_ONLY annotation arguments for JsonProperty. So you could also do something like this.

@JsonProperty(access = Access.WRITE_ONLY)
private String securityCode;

instead of

@JsonIgnore
public int getSecurityCode(){
  return securityCode;
}