nested exception is java.lang.StackOverflowError

以上是访问oauth2的端点报的错，主要是有配置没配置好，修改前配置：

    @Bean
    @Override
    public AuthenticationManager authenticationManagerBean() throws Exception {
        return super.authenticationManagerBean();
    }

修改后配置：

    @Bean
    @Override
    public AuthenticationManager authenticationManagerBean() throws Exception {
        return super.authenticationManagerBean();
    }

    @Override
    protected void configure(AuthenticationManagerBuilder auth) throws Exception {
        auth.jdbcAuthentication()
                .dataSource(dataSource)
                .passwordEncoder(new BCryptPasswordEncoder());
    }