JAVA8新特性

Set<GrantedAuthority> grantedAuths = new HashSet<GrantedAuthority>();
        List<Role> roles = userMapper.selectRolsByUserId(userOne.getTid());
        if (!ObjectUtils.isEmpty(roles)) {
            grantedAuths.addAll(Lists.transform(roles, (Function<Role, GrantedAuthority>) role -> new SimpleGrantedAuthority("ROLE_" + role.getRoleName())));
        }

@Bean
    public Jackson2ObjectMapperBuilderCustomizer jackson2ObjectMapperBuilderCustomizer() {
        return builder -> builder.serializerByType(LocalDateTime.class, localDateTimeDeserializer());
    }