Решено [org.springframework.validation.BindException: org.springframework.validation.BeanPropertyBindingResult: 5 ошибок

Question

У меня проблема с моим первым проектом в Spring boot. Я сделал контактную форму для моего веб-приложения.

И у меня есть такая ошибка:

Решено [org.springframework.validation.BindException: org.springframework.validation.BeanPropertyBindingResult: 5 ошибок

Field error in object 'contact' on field 'phone': rejected value [null]; codes [NotBlank.contact.phone,NotBlank.phone,NotBlank.java.lang.String,NotBlank]; arguments [org.springframework.context.support.DefaultMessageSourceResolvable: codes [contact.phone,phone]; arguments []; default message [phone]]; default message [it can't be empty]
Field error in object 'contact' on field 'name': rejected value [null]; codes [NotBlank.contact.name,NotBlank.name,NotBlank.java.lang.String,NotBlank]; arguments [org.springframework.context.support.DefaultMessageSourceResolvable: codes [contact.name,name]; arguments []; default message [name]]; default message [it can't be empty]
Field error in object 'contact' on field 'message': rejected value [null]; codes [NotBlank.contact.message,NotBlank.message,NotBlank.java.lang.String,NotBlank]; arguments [org.springframework.context.support.DefaultMessageSourceResolvable: codes [contact.message,message]; arguments []; default message [message]]; default message [не может быть пусто]
Field error in object 'contact' on field 'subject': rejected value [null]; codes [NotBlank.contact.subject,NotBlank.subject,NotBlank.java.lang.String,NotBlank]; arguments [org.springframework.context.support.DefaultMessageSourceResolvable: codes [contact.subject,subject]; arguments []; default message [subject]]; default message [it can't be empty]
Field error in object 'contact' on field 'email': rejected value [null]; codes [NotBlank.contact.email,NotBlank.email,NotBlank.java.lang.String,NotBlank]; arguments [org.springframework.context.support.DefaultMessageSourceResolvable: codes [contact.email,email]; arguments []; default message [email]]; default message [it can't be empty]]

Java класс (Entity):

public class Contact {
    @NotBlank
    @Pattern(regexp = "[\\p{L} '-]+", message = "{com.diet4you.LapkoEkaterina.constraint.Name.message}")
    private String name;

    @NotBlank
    @Pattern(regexp = "(?:[a-z0-9!#$%&'*+/=?^_`{|}~-]+(?:\\.[a-z0-9!#$%&'*+/=?^_`{|}~-]+)*|\"(?:[\\x01-\\x08\\x0b\\x0c\\x0e-\\x1f\\x21\\x23-\\x5b\\x5d-\\x7f]|\\\\[\\x01-\\x09\\x0b\\x0c\\x0e-\\x7f])*\")@(?:(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\\.)+[a-z0-9](?:[a-z0-9-]*[a-z0-9])?|\\[(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?|[a-z0-9-]*[a-z0-9]:(?:[\\x01-\\x08\\x0b\\x0c\\x0e-\\x1f\\x21-\\x5a\\x53-\\x7f]|\\\\[\\x01-\\x09\\x0b\\x0c\\x0e-\\x7f])+)\\])",
            message = "{com.diet4you.LapkoEkaterina.constraint.Email.message}")
    private String email;

    @NotBlank
    @Pattern(regexp = "\\+(?:[0-9] ?){6,14}[0-9]", message = "{com.diet4you.LapkoEkaterina.constraint.Phone.message}")
    private String phone;

    @NotBlank
    private String subject;

    @NotBlank
    private String message;

    public Contact() {
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getEmail() {
        return email;
    }

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

    public String getPhone() {
        return phone;
    }

    public void setPhone(String phone) {
        this.phone = phone;
    }

    public String getSubject() {
        return subject;
    }

    public void setSubject(String subject) {
        this.subject = subject;
    }

    public String getMessage() {
        return message;
    }

    public void setMessage(String message) {
        this.message = message;
    }
}

Контроллер: @ Controller

public class ContactController {
    @Autowired
    MailComponent mailComponent;
    @GetMapping("/contact")
    public String contact(@ModelAttribute Contact contact) {
        return "contact";
    }
    @PostMapping("/contact")
    public String processContact(@Validated Contact contact, RedirectAttributes model, BindingResult bindingResult) {

        if (bindingResult.hasErrors())
            return "contact";

        if (mailComponent.sendSimpleMail(contact)) {
            model.addFlashAttribute("classCss", "alert sukcesu");
            model.addFlashAttribute("message", "Twoja wiadomość została wysłana");
        } else {
            model.addFlashAttribute("classCss", "alert ostrzeżenie");
            model.addFlashAttribute("message", "Wystąpił nieoczekiwany błąd, powtórz później");
        }

        return "redirect:/";
    }


}

Итак, мне нужна ваша помощь!