本文主要介紹了Redis?+?Java攔截器實(shí)現(xiàn)用戶匿名和非匿名訪問(wèn)，文中通過(guò)示例代碼介紹的非常詳細(xì)，對(duì)大家的學(xué)習(xí)或者工作具有一定的參考學(xué)習(xí)價(jià)值，需要的朋友們下面隨著小編來(lái)一起學(xué)習(xí)學(xué)習(xí)吧

需求

對(duì)所有的接口按需分類
一些接口可以匿名訪問(wèn)
一些接口必須登錄才可以訪問(wèn)
刷新token

實(shí)現(xiàn)截圖

獲取驗(yàn)證碼

用驗(yàn)證碼完成登錄，并獲取token

用token實(shí)現(xiàn)訪問(wèn)非匿名訪問(wèn)接口

核心代碼

WebMvcConfigurer

/**
 * @author issavior
 */
@Configuration
public class MyWebMvcConfigurer implements WebMvcConfigurer {

    @Autowired
    private RedisTemplate<String, Object> redisTemplate;

    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        registry.addInterceptor(new RefreshTokenInterceptor(redisTemplate))
                .addPathPatterns("/**").order(0);
        registry.addInterceptor(new MyHandlerInterceptor()).addPathPatterns("/user/pay").order(1);
    }
}

HandlerInterceptor

刷新token、添加和移除用戶信息到Threadlocal、

/**
 * @author issavior
 */
@Slf4j
public class RefreshTokenInterceptor implements HandlerInterceptor {

    private final RedisTemplate<String, Object> redisTemplate;

    public RefreshTokenInterceptor(RedisTemplate<String, Object> redisTemplate) {
        this.redisTemplate = redisTemplate;
    }

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler)  {

        String token = request.getHeader("authToken");
        if (StrUtil.isBlank(token)) {
            return true;
        }

        String key = "token:"+token;

        Issa issa = (Issa)redisTemplate.opsForValue().get(key);
        if (issa == null) {
            return true;
        }

        UserHolder.saveUser(issa);

        redisTemplate.expire(key, 60, TimeUnit.SECONDS);

        return true;
    }

    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {

        log.info("postHandle");
    }

    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
        UserHolder.removeUser();
    }
}

判斷用戶是否有權(quán)限

/**
 * @author issavior
 */
public class MyHandlerInterceptor implements HandlerInterceptor {

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        // 1.判斷是否需要攔截（ThreadLocal中是否有用戶）
        if (UserHolder.getUser() == null) {
            // 沒(méi)有，需要攔截，設(shè)置狀態(tài)碼
            response.setStatus(401);
            // 攔截
            return false;
        }
        // 有用戶，則放行
        return true;
    }
}

ThreadLocal

/**
 * @author issavior
 */
public class UserHolder {

    private static final ThreadLocal<Issa> tl = new ThreadLocal<>();

    public static void saveUser(Issa user){
        tl.set(user);
    }

    public static Issa getUser(){
        return tl.get();
    }

    public static void removeUser(){
        tl.remove();
    }

}

到此這篇關(guān)于Redis + Java攔截器實(shí)現(xiàn)用戶匿名和非匿名訪問(wèn)的文章就介紹到這了,更多相關(guān)Redis Java用戶匿名和非匿名訪問(wèn)內(nèi)容請(qǐng)搜索腳本之家以前的文章或繼續(xù)瀏覽下面的相關(guān)文章希望大家以后多多支持腳本之家！

您可能感興趣的文章: