有一个AdminService
类,它继承自UserService
。 UserService
有一个changePassword
方法。因此,当我输入有效的login
时,此方法可以正常工作,但是一旦输入无效的login
,我的错误处理程序将无法正常工作。为什么?
除了if
构造之外,我还尝试了try catch
,但结果是一个。
我正在使用Spring MVC + REST + Spring Security + Jpa + Hibernate + PostgreSQL编写项目
UserService:
@Service
public class UserService implements UserDetailsService {
// Fields
//
private UserRepository userRepository;
private PasswordEncoder passwordEncoder;
// Injects are here
//
@Autowired
public void setUserRepository(UserRepository userRepository) {
this.userRepository = userRepository;
}
@Autowired
public void setPasswordEncoder(PasswordEncoder passwordEncoder) {
this.passwordEncoder = passwordEncoder;
}
// Методы
//
//
public User changePassword(String login, String newPass) throws UsernameNotFoundException {
User user = getUserDataByLogin(login);
if (user == null) {
throw new UsernameNotFoundException("not found" + login);
} else {
user.setPassword(passwordEncoder.encode(newPass));
return userRepository.save(user);
}
}
AdminController:
@PutMapping("/change/password")
User changePassword(@RequestParam String login, @RequestParam String newPass) {
return userService.changePassword(login, newPass);
}
UserRepo:
public interface UserRepository extends JpaRepository<User, Long> {
// Найти пользователя по Login (логин универсален)
User getByLogin(String login);
}
2020-05-14 22:25:30.094 WARN 21000 --- [nio-8080-exec-8] .w.s.m.s.DefaultHandlerExceptionResolver : Resolved [org.springframework.web.HttpRequestMethodNotSupportedException: Request method 'PUT' not supported]
答案 0 :(得分:0)
您正在调用
if (user.equals(null)) {
throw new UsernameNotFoundException("not found" + login);
}
当user为null时,因此您尝试访问null对象中的equals时,抛出此异常,以比较null是否更好,方法是:
if(user == null) {
//
}