class UserController {

    private final UserMapper userMapper;

    @GetMapping("/user/info/{id}")
    public UserDO getUserInfo(@PathVariable("id") long id) {<FILL_FUNCTION_BODY>}

}

        UserDO userDO = userMapper.findById(id);
        log.info("userDO: {}", userDO);
        return userDO;
    
<no_super_class>