SpringBoot 整合 Redis 报错 The URL is not valid for configuring Spring Data Redis

SpringBoot 整合 Redis 报错 The URL is not valid for configuring Spring Data Redis. The scheme ‘null’ is not supported

项目环境：

• SpringBoot 2.3.7.RELEASE

pom.xml 文件引入的依赖：

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-data-redis</artifactId>
</dependency>

application.yml 文件配置

spring:
  redis:
    url: 127.0.0.1
    port: 6379
    password: iampw

启动项目报错信息：

Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2022-08-19 21:37:45.758 ERROR 9140 --- [           main] o.s.b.d.LoggingFailureAnalysisReporter   : 

***************************
APPLICATION FAILED TO START
***************************

Description:
# url 对于 Spring Data Redis 无效，不支持 协议 为 null
The URL '127.0.0.1' is not valid for configuring Spring Data Redis. The scheme 'null' is not supported.

Action:
# 使用不安全的协议 redis:// 或者使用安全的协议 rediss://
Use the scheme 'redis://` for insecure or `rediss://` for secure Redis standalone configuration.

解决

修改 yml 文件，使用redis 的 url 协议

spring:
  redis:
    url: redis://iampw@127.0.0.1:6379