使用redis工具类时发生错误了，工具类是直接复制的师傅文章里的
Error creating bean with name 'createRedisUtils': Injection of resource dependencies failed; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'redisTemplate' defined in class path resource [org/springframework/boot/autoconfigure/data/redis/RedisAutoConfiguration.class]: Unsatisfied dependency expressed through method 'redisTemplate' parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'redisConnectionFactory' defined in class path resource [org/springframework/boot/autoconfigure/data/redis/LettuceConnectionConfiguration.class]: Invocation of init method failed; nested exception is java.lang.IllegalArgumentException: Port out of range: -1
以下是报错log
Port out of range 这个是啥意思。