[FIXED] What's the way to make controller if I want to pass this json code

Issue

I'd like to ask you how my rest controller should look like (in springboot) if I want to pass JSON like this

user: {email: "c", password: "c", username: "c"}

btw JSON which looks like this works fine:

{email: "c", password: "c", username: "c"}

so I think that it depends on 'user' word in JSON, but the problem is that my front-end sends all requests like this so better way would be to make this operable in backend.

because one my actual which looks like:

@PostMapping("/users")
    public void register(@Valid @RequestBody ApplicationUserEntity newUser){

        registerService.registerNewUser(newUser);

    }

isn`t acutally working.

Here is the ApplicationUserEntity class:

@Entity
@Data
@Table(name = "users")
public class ApplicationUserEntity implements UserDetails {

    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    @JsonIgnore
    private Long userId;

    @JsonProperty("email")
    private String email;

    @JsonProperty("username")
    private String username;

    @JsonProperty("password")
    private String password;

    public ApplicationUserEntity() {
    }

    public ApplicationUserEntity(String email, String username, String password) {
        this.email = email;
        this.username = username;
        this.password = password;
    }

    @Override
    public Collection<? extends GrantedAuthority> getAuthorities() {
        return Collections.singleton(new SimpleGrantedAuthority("ROLE_USER"));
    }

    @Override
    public String getPassword() {
        return password;
    }

    @Override
    public String getUsername() {
        return username;
    }

    @Override
    public boolean isAccountNonExpired() {
        return true;
    }

    @Override
    public boolean isAccountNonLocked() {
        return false;
    }

    @Override
    public boolean isCredentialsNonExpired() {
        return true;
    }

    @Override
    public boolean isEnabled() {
        return true;
    }

    public String getEmail() {
        return email;
    }

    public void setEmail(String email) {
        this.email = email;
    }

    public void setUsername(String username) {
        this.username = username;
    }

    public void setPassword(String password) {
        this.password = password;
    }

Solution

Your request body can be the following object:

public class Request {
   private ApplicationUserEntity user;
   // getters, setters ...
}

Its field is the Entity object that you have created. In this case your controller method would look like this:

@PostMapping("/users")
public void register(@Valid @RequestBody Request newUser){

    registerService.registerNewUser(newUser);

}

The JSON request in this case would be:

{
   user: {
     // fields of the ApplicationUserEntity 
   }
} 

Note: It is always recommended that you use DTO objects as requests and response objects. So in this case you would rather have a DTO object that contains the email, username, password field, and put this object as a field in the Request class.

Answered By - don
Answer Checked By - Senaida (JavaFixing Volunteer)