Autowire在Spring引导窗体中不工作

我是spring boot新手，在尝试在我创建的用于验证表单的类中使用服务时发现了一个问题

我创建了一个validator类来验证表单，正如这里提到的

它按预期工作

package com.nexill.bank.form.user;


import com.nexill.bank.entity.User;
import com.nexill.bank.repository.UserRepository;
import org.hibernate.validator.constraints.Email;
import org.hibernate.validator.constraints.NotEmpty;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Configurable;
import org.springframework.stereotype.Component;

import javax.validation.constraints.AssertTrue;
import javax.validation.constraints.Size;

@Component
@Configurable
public class UserForm {

    @Autowired
    UserRepository userRepository;

    @Email(message = "Must be a valid email")
    @NotEmpty(message = "Email cannot be empty")
    private String email;

    @NotEmpty(message = "Password cannot be empty")
    @Size(min=6, max=30, message = "Password need to be between 6 to 30 characters")
    private String password;

    @NotEmpty(message = "Confirm password cannot be empty")
    @Size(min=6, max=30, message = "Confirm password need to be between 6 to 30 characters")
    private String confirmPassword;

    public String getEmail() {
        return email;
    }

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

    public String getPassword() {
        return password;
    }

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

    public String getConfirmPassword() {
        return confirmPassword;
    }

    public void setConfirmPassword(String confirmPassword) {
        this.confirmPassword = confirmPassword;
    }

    @AssertTrue(message = "Password and confirm password need to match")
    public boolean isDifferentPass() {
        return !password.equals(confirmPassword) ? false : true;
    }

    @AssertTrue(message = "Email already exists")
    public boolean isUniqueEmailForUser() {
        User x = userRepository.findUserByEmail(getEmail());
        return (x) == null;
    }
}

问题是im获取HV000090:无法访问isUniqueEmailForUser

当我入侵时，存储库为空。我在系统中的其他地方使用了userRepository和autowire，它按预期工作

主程序包是package com.nexill.bank。我缺少什么

表单在控制器中的使用方式如下

    @RequestMapping(value = "/adminDashboard/user", method= RequestMethod.POST)
    public ModelAndView adminDashboardAddUserPost(ModelAndView modelAndView, @Valid UserForm userForm,  BindingResult bindingResult) {
        modelAndView.addObject("currentUser", authenticationFacade.getUser());
        modelAndView.addObject("userForm", userForm);
        if (!bindingResult.hasErrors()) {
            User user = new User(userForm);
            user.setRole(roleService.getRepository().findByName("BANK_STAFF"));
            userService.createUser(user);
            ModelAndView redirectModelAndView = new ModelAndView("redirect:/adminDashboard");
            redirectModelAndView.addObject("saveStatus" , true);
            return redirectModelAndView;
        }
        modelAndView.setViewName("adminDashboard/user");
        return modelAndView;
    }

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提前感谢。

正如我在您案例的评论中提到的，这里只有一个POJO实例，而不是一个bean。所以这里没有自动连线的豆子

相反，您可以添加一个自定义约束，并提供一个带有注入bean的验证器

@Target({ElementType.METHOD, ElementType.FIELD})
@Retention(RetentionPolicy.RUNTIME)
@Constraint(validatedBy=MyConstraintValidator.class)
public @interface MyConstraint {
}

您可以在其中注入bean的验证器

import javax.validation.ConstraintValidator;

public class MyConstraintValidator implements ConstraintValidator {

    @Autowired;
    private UserRepository userRepository;

    ...
}

从链接中获取代码

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如何创建对象？我猜您正在尝试验证控制器中的对象，但在本例中，该对象不是bean，而是根据请求创建的。所以存储库不是自动连线的。嗨，StanislavL问题是用控制器中的代码更新的，因为我知道表单也在这里注入。我不确定底层行为。希望这有助于解决问题。非常感谢