@Entity
@Table(name = "users")
public class User {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
@Column(name = "userID")
private int userID;

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

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

@OneToMany(mappedBy = "user")
private List<Wishes> wishes;

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

public User() {}

public String getUsername() {
    return username;
}

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

public List<Wishes> getWishes() {
    return wishes;
}

public void setWishes(List<Wishes> wishes) {
    this.wishes = wishes;
}

public String getAuthorities() {
    return authorities;
}

public void setAuthorities(String authorities) {
    this.authorities = authorities;
}

public String getPassword() {
    return password;
}

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

@Override
public String toString() {
    return userID + " " + username + " " + password;
}
}

@Entity
@Table(name = "wishes")
public class Wishes {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
@Column(name = "wishID")
private int wishID;


@ManyToOne(optional = false)
@JoinColumn(name = "userID")
private User user;

@Column(name = "wishName")
private String wishName;
@Column(name = "link")
private String link;

public int getWishID() {
    return wishID;
}

public void setWishID(int wishID) {
    this.wishID = wishID;
}

public User getUser() {
    return user;
}

public void setUser(User user) {
    this.user = user;
}

public String getWishName() {
    return wishName;
}

public void setWishName(String wishName) {
    this.wishName = wishName;
}

public String getLink() {
    return link;
}

public void setLink(String link) {
    this.link = link;
}

@Override
public String toString() {
    return wishID + " " + wishName + " " + link;
}
}

@RequestMapping(value = "/")
public ResponseEntity<List<Wishes>> getMainPage() {
    Authentication authentication = SecurityContextHolder.getContext().getAuthentication();
    org.springframework.security.core.userdetails.User user = (org.springframework.security.core.userdetails.User)authentication.getPrincipal();

    User user1 = manageUser.findbyUsername(user.getUsername());

    return new ResponseEntity<List<Wishes>>(user1.getWishes(), HttpStatus.OK);
}