【发布时间】：2019-07-10 15:05:21
【问题描述】：
我确认电子邮件是唯一的。这是注册期间的工作。但是当我尝试更改用户个人资料中的电子邮件时，我遇到了错误。
我检查电子邮件以运行 userRepository.findByEmail。如果找到用户，则电子邮件不是唯一的。但是当用户在配置文件中更改他的电子邮件时，findByEmail 会返回该用户。验证失败。
我需要检查 findByUser 返回的用户与更改电子邮件的用户不同。为此，我需要传递在验证器中更改电子邮件的用户。
这是我的代码。
实体：
@Data
@Table(name = "users")
@NoArgsConstructor
@CheckPasswordConfirm(message = "Password not equal!")
@Entity
public class User implements UserDetails{
private static final long serialVersionUID = 1L;
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
private Long id;
@NotBlank(message = "Username is empty!")
@UniqueUsername(message = "Username isn't unique")
private String username;
@NotBlank(message = "Password is empty!")
private String password;
@Transient
@NotBlank(message = "Password confirm is empty!")
private String passwordconfirm;
private boolean active;
@Email(message = "E-mail!")
@NotBlank(message = "E-mail is empty!")
@UniqueEmail(message = "Email isn't unique!")
private String email;
private String activationCode;
@ElementCollection(targetClass = Role.class, fetch = FetchType.EAGER)
@CollectionTable(name = "user_role", joinColumns = @JoinColumn(name = "user_id"))
@Enumerated(EnumType.STRING)
private Set<Role> roles;
public boolean isAdmin()
{
return roles.contains(Role.ADMIN);
}
@Override
public Collection<? extends GrantedAuthority> getAuthorities() {
return getRoles();
}
@Override
public boolean isAccountNonExpired() {
return true;
}
@Override
public boolean isAccountNonLocked() {
return true;
}
@Override
public boolean isCredentialsNonExpired() {
return true;
}
@Override
public boolean isEnabled() {
return true;
}
}
注解 UniqueEmail：
@Constraint(validatedBy = UniqueEmailValidator.class)
@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.FIELD)
public @interface UniqueEmail {
public String message();
public Class<?>[] groups() default {};
public Class<? extends Payload>[] payload() default{};
}
验证器：
package ru.watchlist.domain.validation.validators;
import javax.validation.ConstraintValidator;
import javax.validation.ConstraintValidatorContext;
import org.springframework.beans.factory.annotation.Autowired;
import ru.watchlist.domain.validation.annotations.UniqueEmail;
import ru.watchlist.service.UserService;
public class UniqueEmailValidator implements ConstraintValidator<UniqueEmail, String> {
@Autowired
private UserService userService;
@Override
public boolean isValid(String value, ConstraintValidatorContext context) {
return value != null && !userService.isEmailAlredyUse(value);
}
}
userService.isEmailAlredyUse：
public boolean isEmailAlredyUse(String value) {
User user = userRepository.findByEmail(value);
if(user != null) {
return true;
}
return false;
}
这里我需要检查：
User userFromDB = userRepository.findByEmail(value);
if(userFromDB != null && user != userFromDB) {
return true;
}
我该如何解决这个问题？
附：如果我要使用交叉字段对类做验证器，我不能在 Thymeleaf 中显示他们的字段错误。因此我需要字段验证器。
附言我的控制器：
@Controller
@RequestMapping("/profile")
public class ProfileController {
@Autowired
UserService userService;
@GetMapping
public String profile(@AuthenticationPrincipal User user, Model model) {
model.addAttribute(user);
return "profile";
}
@PostMapping("/update")
public String saveChanges(@Valid User user, Errors errors) {
if(errors.hasErrors()) {
return "profile";
}
userService.addUser(user);
return "redirect:/profile";
}
}
用户存储库：
public interface UserRepository extends JpaRepository<User, Long>{
User findByUsername(String username);
User findByActivationCode(String code);
User findByEmail(String email);
}
【问题讨论】：
标签： spring validation bean-validation hibernate-validator