apollo-portal/src/main/java/com/ctrip/framework/apollo/portal/spi/configuration/AuthConfiguration.java/AuthConfiguration/jdbcUserDetailsManager
class AuthConfiguration:    @Bean
    @ConditionalOnMissingBean(JdbcUserDetailsManager.class)
    public JdbcUserDetailsManager jdbcUserDetailsManager(PasswordEncoder passwordEncoder,
        AuthenticationManagerBuilder auth, DataSource datasource) throws Exception {
      return SpringSecurityAuthAutoConfiguration
          .jdbcUserDetailsManager(passwordEncoder, auth, datasource);
    }