java - Use custom setter in Lombok's builder

Question

I have a custom setter in my Lombok-based POJO:

@Data
@Builder
public class User {
    private static final PasswordEncoder ENCODER = new BCryptPasswordEncoder();

    private String password = null;

    public void setPassword(String password) {
        Assert.notNull(password);
        this.password = ENCODER.encode(password);
    }

but when I use the Lombok generated builder:

User user = User.builder()
    .password(password)
    .build();

my custom setter is not invoked, and so the password is not encoded. This makes me sad.

My custom setter is, of course, invoked when I use it directly:

public void changePassword(String password, User user) {
    user.setPassword(password);
}

What can I do to have Lombok's builder use my custom setter?

Answer 1

Per the documentation for @Builder: Just define enough skeleton yourself. In particular, Lombok will generate a class UserBuilder, fields mirroring the User fields, and builder methods, and you can provide any or all of this yourself.

@Builder
public class User {
    private static final PasswordEncoder ENCODER = new BCryptPasswordEncoder();

    private String username;

    private String password;

    public static class UserBuilder {
        public UserBuilder password(String password) {
            this.password = ENCODER.encode(password);
            return this;
        }
    }
}