我正在使用Spring Security OAuth2
2.0.7.RELEASE。当我使用ORM连接到数据库并且默认JdbcUserDetailsManager使用jdbc时，我想实现自己的UserDetailsS​​ervice，即

@Service
public class UserService
    implements UserDetailsService {

    @Override
    public UserDetailsService loadUserByUsername(String username) throws UsernameNotFoundException {
        // I tested this logic and works fine so i avoid this lines
        return userDetailsService;
    }
}

此外，我修改了权限架构，如下所示：

mysql> describe authorities;
+--------------+---------------------+------+-----+---------+----------------+
| Field        | Type                | Null | Key | Default | Extra          |
+--------------+---------------------+------+-----+---------+----------------+
| authority_id | bigint(20) unsigned | NO   | PRI | NULL    | auto_increment |
| user_id      | bigint(20) unsigned | NO   | MUL | NULL    |                |
| authority    | varchar(256)        | NO   |     | NULL    |                |
+--------------+---------------------+------+-----+---------+----------------+

然后，我像这样注入我的自定义userDetailsS​​ervice：

@Configuration
@Import(OAuth2SupportConfig.class)
@EnableAuthorizationServer
public class OAuth2AuthorizationServerConfig extends
        AuthorizationServerConfigurerAdapter {

  ...

  @Autowired
  private UserDetailsService userDetailsService

    @Override
    public void configure(AuthorizationServerEndpointsConfigurer    endpoints)
            throws Exception {
        endpoints.authenticationManager(authenticationManager)
                .tokenStore(tokenStore).tokenServices(tokenService);
        endpoints.userDetailsService(userDetailsService); // Inject custom
        endpoints.authorizationCodeServices(authorizationCodeServices);
    }

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

@Configuration
@Order(Ordered.HIGHEST_PRECEDENCE)
public class AuthenticationManagerConfiguration
    extends GlobalAuthenticationConfigurerAdapter {

    @Autowired
    private DataSource dataSource;

    @Autowired
    private UserDetailsService userService;

    @Override
    public void init(AuthenticationManagerBuilder auth) throws Exception {
 auth.jdbcAuthentication().dataSource(this.dataSource).and().userDetailsService(this.userService);// Inject custom
    }
}

如果我使用Grant_type = password发送/ oauth / token请求，则会出现此错误

POST /oauth/token HTTP/1.1
Host: localhost:8080
Authorization: Basic aW5kaXJhOnNlY3JldA==
Cache-Control: no-cache
Postman-Token: c89baf37-8ad2-4270-5251-9715bfab470a
Content-Type: application/x-www-form-urlencoded

grant_type=password&username=user&password=pass

（其中对clientId和clientSecret进行编码）

{
  "error": "unauthorized",
  "error_description": "PreparedStatementCallback; bad SQL grammar [select username,authority from authorities where username = ?]; nested exception is com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown column 'username' in 'field list'"
}

显然仍在使用默认的JdbcDaoImpl。实际上，当我开始调试时，我发现遵循以下步骤：

1. 对客户端进行身份验证（好的，因为我还没有修改oauth_client_details表）
2. 使用我的自定义userDetailsS​​ervice对用户进行身份验证（好的，已修改users表，但我的自定义userDetailsS​​ervice支持更改）
3. 使用默认userDetailsS​​ervice（ERROR）对用户进行身份验证

我不知道为什么会这样。对我来说，这听起来像个虫子。你有没有发现什么问题？