有一个 AdminService
类,继承自 UserService
. UserService
有 changePassword
方法。因此,当我输入一个有效的 login
,但只要我输入一个无效的 login
我的错误处理程序不工作。为什么?
除了 if
构,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编写一个项目。
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]
你正在调用
if (user.equals(null)) {
throw new UsernameNotFoundException("not found" + login);
}
当用户为null时,所以你是想在一个null对象中访问到equals,这时抛出异常,比较null是否比较好的方法是这样做的。
if(user == null) {
//
}