Redis实现短信登录的示例代码

---------------------------------------------------Controller
@PostMapping("code")
public Result sendCode(@RequestParam("phone") String phone, HttpSession session) {
    //发送短信验证码并保存验证码
    return userService.sendCode(phone,session);
}
@PostMapping("/login")
public Result login(@RequestBody LoginFormDTO loginForm, HttpSession session){
    //实现登录功能  loginForm 登录参数，包含手机号、验证码；或者手机号、密码
    return userService.login(loginForm,session);
}
@GetMapping("/me")
public Result me(){
    // 获取当前登录的用户并返回
    UserDTO user = UserHolder.getUser();
    return Result.ok(user);
}
---------------------------------------------------Service
@Service
public class UserServiceImpl extends ServiceImpl<UserMapper, User> implements IUserService {
    @Override
    public Result sendCode(String phone, HttpSession session) {
        if(RegexUtils.isPhoneInvalid(phone)){
            return Result.fail("手机号格式错误");
        }
        String code = RandomUtil.randomNumbers(6);
        session.setAttribute("code",code);
        log.debug("短信验证码" + code);
        return Result.ok();
    }
    @Override
    public Result login(LoginFormDTO loginForm, HttpSession session) {
        if(RegexUtils.isPhoneInvalid(loginForm.getPhone())){
            return Result.fail("手机号格式错误");
        }
        Object catchCode = session.getAttribute("code");
        String code = loginForm.getCode();
        if(catchCode == null || !catchCode.equals(code)){
            Result.fail("验证码错误");
        }
        User user = query().eq("phone", loginForm.getPhone()).one();
        if (user == null) {
            user = createUserWithPhone(loginForm.getPhone());
        }
        session.setAttribute("user", BeanUtil.copyProperties(user, UserDTO.class));
        return Result.ok();
    }
    private User createUserWithPhone(String phone) {
        User user = new User();
        user.setPhone(phone);
        user.setNickName(USER_NICK_NAME_PREFIX + RandomUtil.randomNumbers(3));
        save(user);
        return user;
   	}
}
---------------------------------------------------自定义拦截器
public class LoginInterceptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        HttpSession session = request.getSession();
        Object user = session.getAttribute("user");
        if (user == null) {
            response.setStatus(401);
            return false;
        }
        UserHolder.saveUser((UserDTO) user);
        return true;
    }
    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
        UserHolder.removeUser();
    }
}
---------------------------------------------------添加拦截器并指定拦截的请求和不拦截的请求
@Configuration
public class MvcConfig implements WebMvcConfigurer {
    @Override
    public void addInterceptors(InterceptorRegistry registry) {
   		 //实现WebMvcConfigurer接口中的addInterceptors方法把自定义的拦截器类添加进来即可
        registry.addInterceptor(new LoginInterceptor()).excludePathPatterns(
                "/user/code",
                "/user/login",
                "/blog/hot",
                "/shop/**",
                "/shop-type/**",
                "/voucher/**"
        );
    }
}

-------------------只记录有变化的--------------------------------Service
@Service
public class UserServiceImpl extends ServiceImpl<UserMapper, User> implements IUserService {
    @Resource
    private StringRedisTemplate stringRedisTemplate;
    @Override
    public Result sendCode(String phone, HttpSession session) {
        if (RegexUtils.isPhoneInvalid(phone)) {
            return Result.fail("手机号格式错误");
        }
        String code = RandomUtil.randomNumbers(6);
        stringRedisTemplate.opsForValue().set(LOGIN_CODE_KEY + phone, code, LOGIN_CODE_TTL, TimeUnit.MINUTES);
        log.debug("短信验证码" + code);
        return Result.ok();
    }
    @Override
    public Result login(LoginFormDTO loginForm, HttpSession session) {
        String phone = loginForm.getPhone();
        if (RegexUtils.isPhoneInvalid(phone)) {
            return Result.fail("手机号格式错误");
        }
        String cacheCode = stringRedisTemplate.opsForValue().get(LOGIN_CODE_KEY + phone);
        String code = loginForm.getCode();
        if (cacheCode == null || !cacheCode.equals(code)) {
            return Result.fail("验证码错误");
        }
        User user = query().eq("phone", phone).one();
        if (user == null) {
            user = createUserWithPhone(phone);
        }
        String token = UUID.randomUUID().toString(true);
        UserDTO userDTO = BeanUtil.copyProperties(user, UserDTO.class);
        Map<String, Object> userMap = BeanUtil.beanToMap(userDTO, new HashMap<>(),CopyOptions.create()
                .setIgnoreNullValue(true).setFieldValueEditor((fieldName, fieldValue) -> fieldValue.toString()));
        stringRedisTemplate.opsForHash().putAll(LOGIN_USER_KEY + token, userMap);
        stringRedisTemplate.expire(LOGIN_USER_KEY + token, LOGIN_USER_TTL, TimeUnit.MINUTES);
        return Result.ok(token);
    }
}
---------------------------------------------------添加拦截器并指定拦截的请求和不拦截的请求
@Configuration
public class MvcConfig implements WebMvcConfigurer {
    @Resource
    private StringRedisTemplate stringRedisTemplate;
    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        registry.addInterceptor(new LoginInterceptor()).excludePathPatterns(
                "/user/code",
                "/user/login",
                "/blog/hot",
                "/shop/**",
                "/shop-type/**",
                "/voucher/**"
        ).order(1);
        registry.addInterceptor(new RefreshTokenInterceptor(stringRedisTemplate)).addPathPatterns("/**").order(0);
    }
}
---------------------------------------------------自定义拦截器
public class LoginInterceptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        //判断ThreadLocal中是否有用户
        if(UserHolder.getUser() == null){
            response.setStatus(401);
            return false;
        }
        return true;
    }
}
public class RefreshTokenInterceptor implements HandlerInterceptor {
    private StringRedisTemplate stringRedisTemplate;
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        String token = request.getHeader("authorization");
        if (StrUtil.isBlank(token)) {
            return true;
        }
        Map<Object, Object> userMap = stringRedisTemplate.opsForHash().entries(RedisConstants.LOGIN_USER_KEY + token);
        if (userMap.isEmpty()) {
            return true;
        }
        UserDTO userDTO = BeanUtil.fillBeanWithMap(userMap, new UserDTO(), false);
        //保存在ThreadLocal中
        UserHolder.saveUser(userDTO);
        //刷新token有效期
        stringRedisTemplate.expire(RedisConstants.LOGIN_USER_KEY + token,RedisConstants.LOGIN_USER_TTL, TimeUnit.MINUTES);
        return true;
    }
    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
        UserHolder.removeUser();
    }
    public RefreshTokenInterceptor(StringRedisTemplate stringRedisTemplate) {
        this.stringRedisTemplate = stringRedisTemplate;
    }
}