new construction in spring boot using mysql, com.mysql.jdbc.Driver marked red

The pom.xml in

<dependency>
    <groupId>mysql</groupId>
    <artifactId>mysql-connector-java</artifactId>
    <scope>runtime</scope><!--这一句去掉就行了-->
</dependency>

<dependency> 
    <the groupId> org.springframework.boot </ the groupId> 
    <the artifactId> Boot-Starter-Spring-JDBC </ the artifactId> 
</ dependency> 

know not why, slowly Study