SpringBoot拦截器注入stringredistemplate出现Consider defining a bean of type 'org.springframework.data.redis.core.RedisTemplate' in your configuration.问题

问题

自定义拦截器需要注入StringRedisTemplate来通过token获取redis中的数据

自定义拦截器代码

@Component
public class LoginInterceptor implements HandlerInterceptor {

    @Autowired
    private StringRedisTemplate stringRedisTemplate;

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        // 1.获取请求头中的token
        String token = request.getHeader("authorization");
        if(token == null)
        {
            response.setStatus(401);
            return false;
        }
        // 2.基于token获取redis中的用户
        Map<Object, Object> userMap = stringRedisTemplate.opsForHash().entries(LOGIN_USER_KEY + token);
        //3.判断用户是否存在
        if (userMap.isEmpty()){
            //4.不存在则拦截,返回401
            response.setStatus(401);
            return false;
        }
        // 5.将查询出来的Hash转成UserDto对象
        UserDTO userDTO = BeanUtil.fillBeanWithMap(userMap, new UserDTO(),false);
        //5.存在就保存用户信息到ThreadLocal
        UserHolder.saveUser(userDTO);


        // 6.刷新TOken有效期
        stringRedisTemplate.expire(LOGIN_USER_KEY + token, Duration.ofSeconds(LOGIN_USER_TTL));

        //7.放行



        return true;
    }

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

配置类代码

@Configuration
public class MvcConfig implements WebMvcConfigurer {


    @Autowired
    private LoginInterceptor loginInterceptor;

    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        registry.addInterceptor(loginInterceptor)
                .excludePathPatterns(
                        "/user/code",
                        "/user/login",
                        "/blog/hot",
                        "/shop/**",
                        "/shop-type/**",
                        "/upload/**",
                        "/voucher/**"
                );
    }
}

问题是注入StringRedisTemplate后启动后端时报错:Consider defining a bean of type 'org.springframework.data.redis.core.RedisTemplate' in your configuration

问题出在没有配置RedisConfig类

解决方法

考虑在config包中添加RedisConfig类
具体代码:

public class RedisConfig {

    @Bean
    public RedisTemplate redisTemplate(RedisConnectionFactory redisConnectionFactory){
        RedisTemplate redisTemplate = new RedisTemplate();
        //设置redis连接工厂对象
        redisTemplate.setConnectionFactory(redisConnectionFactory);
        //创建Json序列化工具
        GenericJackson2JsonRedisSerializer genericJackson2JsonRedisSerializer = new GenericJackson2JsonRedisSerializer();
        //redis中的key序列化器
        redisTemplate.setKeySerializer(RedisSerializer.string());
        redisTemplate.setHashKeySerializer(RedisSerializer.string());
        //redis中的Object序列化器
        redisTemplate.setValueSerializer(genericJackson2JsonRedisSerializer);
        redisTemplate.setHashValueSerializer(genericJackson2JsonRedisSerializer);
        return redisTemplate;
    }
}