Sping Security custom UserDetailsService keeps reporting the return value is empty exception
Use a custom UserDetail class as the return object, the code is as follows
@Data public class CustomUser implements Serializable, UserDetails { private String username; private String password; private boolean state; private List<GrantedAuthority> authorities; @Override public Collection<? extends GrantedAuthority> getAuthorities() { return this.authorities; } @Override public String getPassword() { return this.password; } @Override public String getUsername() { return this.username; } @Override public boolean isAccountNonExpired() { return true; } @Override public boolean isAccountNonLocked() { return true; } @Override public boolean isCredentialsNonExpired() { return true; } @Override public boolean isEnabled() { return true; } public CustomUser(String username, String password, boolean state, List<GrantedAuthority> authorities) { this.username = username; this.password = password; this.state = state; this.authorities = authorities; } }
It is no problem to use the instance of UserDetail to return the value.Once I use the CustomUser defined by myself as the return object, it will report a null value exception.
@Service public class CustomUserDetailService implements UserDetailsService { @Autowired private UsersDao usersDao; @Override public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException { if (StringUtils.isEmpty(username)) { throw new NullPointerException("CustomUserDetailService.loadUserByUsername: Null value exception!"); } UsersPOJO user = usersDao.selectOneByUseremailUsersPojo(username); if (StringUtils.isEmpty(user)) { throw new UsernameNotFoundException("The user does not exist!"); } return new User(user.getUseremail(), user.getPassword(), new ArrayList<>()); } }
return new User(user.getUseremail(), user.getPassword(), new ArrayList<>()); Only report a null pointer if you pass an empty list here
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Mfoblz
2024-03-08