使用 Spring Security 从 JWT 令牌中提取当前登录的用户信息

我已经使用 Spring Security Oauth2 实现了 JWT 和 LDAP 身份验证。它似乎工作正常，我可以使用我的 LDAP 凭据登录。

现在，有一个要求，我需要使用当前登录的用户信息将详细信息保存在数据库中 - 特别是当该用户添加/更新新记录时。我尝试使用 Spring 安全方式来实现

SecurityContextHolder.getContext().getAuthentication().getDetails() 

但它不会返回我在 JWT 中拥有的所有信息。它只返回远程 IP、JWT 令牌值和经过身份验证的 true。它甚至不返回 name()。

我是 JWT 的新手，所以不确定是否需要通过读取该令牌来提取它，甚至不确定我们如何实现它。

任何指示将不胜感激。

Thanks.

您需要做的第一件事是在创建 JWT 时将用户信息存储在 JWT 中，然后在使用时必须将其提取出来。我遇到了类似的情况，我通过扩展两个解决方案TokenEnhancer and JwtAccessTokenConverter.

我用TokenEnhancer嵌入我的扩展类型主体CustomUserDetailsJWT 中的附加信息。

public class CustomAccessTokenEnhancer implements TokenEnhancer {

    @Override
    public OAuth2AccessToken enhance(OAuth2AccessToken accessToken, OAuth2Authentication authentication) {
        Authentication userAuthentication = authentication.getUserAuthentication();
        if (userAuthentication != null) {
            Object principal = authentication.getUserAuthentication().getPrincipal();
            if (principal instanceof CustomUserDetails) {
                Map<String, Object> additionalInfo = new HashMap<>();
                additionalInfo.put("userDetails", principal);
                ((DefaultOAuth2AccessToken) accessToken).setAdditionalInformation(additionalInfo);
            }
        }
        return accessToken;
    }
}

然后在构建时手动提取扩展主体Authentication处理经过身份验证的请求时的对象。

public class CustomJwtAccessTokenConverter extends JwtAccessTokenConverter {

    @Override
    public OAuth2Authentication extractAuthentication(Map<String, ?> map) {
        OAuth2Authentication authentication = super.extractAuthentication(map);
        Authentication userAuthentication = authentication.getUserAuthentication();

        if (userAuthentication != null) {
            LinkedHashMap userDetails = (LinkedHashMap) map.get("userDetails");
            if (userDetails != null) {

                // build your principal here
                String localUserTableField = (String) userDetails.get("localUserTableField");
                CustomUserDetails extendedPrincipal = new CustomUserDetails(localUserTableField);

                Collection<? extends GrantedAuthority> authorities = userAuthentication.getAuthorities();

                userAuthentication = new UsernamePasswordAuthenticationToken(extendedPrincipal,
                        userAuthentication.getCredentials(), authorities);
            }
        }
        return new OAuth2Authentication(authentication.getOAuth2Request(), userAuthentication);
    }
}

and the AuthorizationServer配置将它们结合在一起。

@Configuration
@EnableAuthorizationServer
public class AuthorizationServerConfig extends AuthorizationServerConfigurerAdapter {

    @Autowired
    private AuthenticationManager authenticationManager;

    @Autowired
    private UserDetailsService userDetailsService;

    @Autowired
    private DataSource dataSource;

    @Bean
    public JwtAccessTokenConverter accessTokenConverter() {
        CustomJwtAccessTokenConverter accessTokenConverter = new CustomJwtAccessTokenConverter();
        accessTokenConverter.setSigningKey("a1b2c3d4e5f6g");
        return accessTokenConverter;
    }

    @Bean
    public TokenStore tokenStore() {
        return new JwtTokenStore(accessTokenConverter());
    }

    @Bean
    @Primary
    public DefaultTokenServices tokenServices() {
        DefaultTokenServices defaultTokenServices = new DefaultTokenServices();
        defaultTokenServices.setTokenStore(tokenStore());
        defaultTokenServices.setSupportRefreshToken(true);
        return defaultTokenServices;
    }

    @Bean
    public TokenEnhancer tokenEnhancer() {
        return new CustomAccessTokenEnhancer();
    }

    @Bean
    public PasswordEncoder passwordEncoder() {
        return new BCryptPasswordEncoder();
    }

    @Override
    public void configure(ClientDetailsServiceConfigurer clients) throws Exception {
        clients.jdbc(dataSource).passwordEncoder(passwordEncoder());
    }

    @Override
    public void configure(AuthorizationServerEndpointsConfigurer endpoints) throws Exception {
        TokenEnhancerChain tokenEnhancerChain = new TokenEnhancerChain();
        tokenEnhancerChain.setTokenEnhancers(Arrays.asList(tokenEnhancer(), accessTokenConverter()));
        endpoints
                .tokenStore(tokenStore())
                .tokenEnhancer(tokenEnhancerChain)
                .authenticationManager(authenticationManager)
                .userDetailsService(userDetailsService);
    }

    @Override
    public void configure(AuthorizationServerSecurityConfigurer security) throws Exception {
        security.passwordEncoder(passwordEncoder());
        security.checkTokenAccess("isAuthenticated()");
    }
}

然后我可以像这样访问我的资源控制器中的扩展主体

@RestController
public class SomeResourceController {

    @RequestMapping("/some-resource")
    public ResponseEntity<?> someResource(Authentication authentication) {
        CustomUserDetails userDetails = (CustomUserDetails) authentication.getPrincipal();
        return ResponseEntity.ok("woo hoo!");
    }

}

希望这可以帮助！