@GetMapping doesn't serialize Ids

Question

I have a problem with @GetMapping in Spring boot.

It's about my @GetMapping function that doesn't serialize my id on this model while getting all data from database:

//User.java
@Entity
@Table(name = "users")
public class User {
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Integer id;

    @Column(name = "username")
    private String username;

    @Temporal(TemporalType.TIMESTAMP)
    @Column(name = "joined_date")
    @CreatedDate
    private Date joinedDate;

    @Column(name = "password")
    private String password;

    @Column(name = "bio")
    private String bio;

    @Column(name = "email")
    private String email;
}

I tried many ways but cannot solve at all. Even this question: Spring boot @ResponseBody doesn't serialize entity id

This is the image below:

Answer 1

I did it! Because I forgot to put the getter/setter for the model. And there are more potentials here I wanna tell:

• private int id should be changed to private Integer id as @Muhammad Vaqas told me
• Try to see the solution from this question: Spring boot @ResponseBody doesn't serialize entity id

And there is the full form of the model:

package com.harrycoder.weebjournal.user;

import java.util.Date;

import javax.persistence.*;

import org.springframework.data.annotation.CreatedDate;

import com.fasterxml.jackson.annotation.*;

@Entity
@Table(name = "users")
@JsonIgnoreProperties(value = {"createdAt", "updatedAt"}, 
        allowGetters = true)
public class User {
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Integer id;

    @Column(name = "username")
    private String username;

    @Temporal(TemporalType.TIMESTAMP)
    @Column(name = "joined_date")
    @CreatedDate
    private Date joinedDate;

    @Column(name = "password")
    private String password;

    @Column(name = "bio")
    private String bio;

    @Column(name = "email")
    private String email;

    public Integer getId() {
        return id;
    }

    public String getUsername() {
        return username;
    }

    public String getPassword() {
        return password;
    }

    public String getBio() {
        return bio;
    }

    public String getEmail() {
        return email;
    }

    public Date getJoinedDate() {
        return joinedDate;
    }
}