错误：该用户名不存在：使用Spring Security时

如何解决错误：该用户名不存在：使用Spring Security时

我正在使用Spring Boot + Spring Security构建后端，并使用Postman对其进行测试。 对于前端，我将使用Android应用程序。

已实施http basic auth。

当我单击Postman中的Authentication选项卡并从下拉框中选择Basic Auth，然后在其中输入用户名和密码字段时，它就可以正常工作。但是，当我发送原始JSON请求正文时，出现以下错误：

org.springframework.security.authentication.InternalAuthenticationServiceException: User doesn't exist with this username:

我认为这是由此类引起的

CustomUserDetailsS​​ervice.java

@Service
public class CustomUserDetailsService implements UserDetailsService {

    @Autowired
    private UserRepository userRepository;

    @Override
    public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
        User user = userRepository.findByUsername(username);
        CustomUserDetails userDetails = null;

        if(user != null){
            userDetails = new CustomUserDetails();
            userDetails.setUser(user);
        }else{
            throw new UserNotFoundException("User doesn't exist with this username: " + username);
        }
        return userDetails;

    }

}

但是我不确定为什么要与Postman auth下拉框配合使用。

这是我使用的更多代码：

SecurityConfiguration.java

@Configuration
@EnableWebSecurity
@EnableGlobalMethodSecurity(prePostEnabled = true)
public class SecurityConfiguration extends WebSecurityConfigurerAdapter {

    @Autowired
    private UserDetailsService userDetailsService;

   @Override
    protected void configure(AuthenticationManagerBuilder auth) throws Exception {
        auth
                .userDetailsService(userDetailsService)
                .passwordEncoder(encodePWD());
    }

    @Override
    protected void configure(HttpSecurity http) throws Exception {

        http.sessionManagement()
                .sessionCreationPolicy(SessionCreationPolicy.STATELESS);
        http.csrf().disable();
        http
                .httpBasic()
                .and()
                .authorizeRequests()
                .antMatchers("/rest/**").permitAll()
                .and()
                .authorizeRequests()
                .antMatchers("/secure/**").hasAnyRole("ADMIN")
                .anyRequest().authenticated()
                .and()
                .formLogin()
                .permitAll();

    }

    @Bean
    public BCryptPasswordEncoder encodePWD() {
        return new BCryptPasswordEncoder();
    }

}

CustomUserDetailsS​​ervice.java

@Service
public class CustomUserDetailsService implements UserDetailsService {

    @Autowired
    private UserRepository userRepository;

    @Override
    public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
        User user = userRepository.findByUsername(username);
        CustomUserDetails userDetails = null;

        if(user != null){
            userDetails = new CustomUserDetails();
            userDetails.setUser(user);
        }else{
            throw new UserNotFoundException("User doesn't exist with this username: " + username);
        }
        return userDetails;

    }

}

CustomUserDetails.java

@Getter
@Setter
public class CustomUserDetails implements UserDetails {
    private User user;
    @Override
    public Collection<? extends GrantedAuthority> getAuthorities() {
        return user.getRoles().stream().map(role -> new SimpleGrantedAuthority("ROLE_" + role.getRole())).collect(Collectors.toSet());
    }
    @Override
    public String getPassword() {
        return user.getPassword();
    }
    @Override
    public String getUsername() {
        return user.getUsername();
    }
    @Override
    public boolean isAccountNonExpired() {
        return true;
    }
    @Override
    public boolean isAccountNonLocked() {
        return true;
    }
    @Override
    public boolean isCredentialsNonExpired() {
        return true;
    }
    @Override
    public boolean isEnabled() {
        return true;
    }
}

我还用它来登录用户并检查数据库中是否匹配一个。

@PostMapping("/loginuser")
    ResponseEntity<Object> login(@RequestBody User user) {
        List<User> userList = userRepository.findByUsernameAndPassword(user.getUsername(),user.getPassword());
        if (userList.size() != 1) {
            throw new UserNotFoundException("Entity not found");
        } else {
            return new ResponseEntity<>(userList.get(0),HttpStatus.OK);
        }
    }

是否甚至可以将https basic auth用于休息服务器api？

还是我必须对带有OAuth和类似令牌的令牌使用某些身份验证？

更新

解决方法

如果使用“邮递员授权”选项卡，邮递员将构造相应的授权标头Authorization: Basic <credentials>，其中credentials是用户名和密码的Base64编码。

您可以在邮递员请求中单击标题并将其隐藏，然后看到该标题。

Spring Security HTTP基本认证需要此标头。如果仅将用户名和密码以JSON形式发布在请求的主体中，Spring Security HTTP基本身份验证将无法从标头中提取用户名。因此，user等于null并引发异常。