问题：
. ____ _ __ _ _
/\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
\\/ ___)| |_)| | | | | || (_| | ) ) ) )
' |____| .__|_| |_|_| |_\__, | / / / /
=========|_|==============|___/=/_/_/_/
:: Spring Boot :: (v2.3.5.RELEASE)
2021-04-12 10:08:16.432 INFO 12728 --- [ main] c.b.m.s.p.PaginationApplication : Starting PaginationApplication on LAPTOP-J3Q53C5V with PID 12728 (C:\Users\mahao\Documents\毕设\study\mybatis-plus-samples\mybatis-plus-sample-pagination\target\classes started by mahao in C:\Users\mahao\Documents\毕设\study\mybatis-plus-samples)
2021-04-12 10:08:16.432 DEBUG 12728 --- [ main] c.b.m.s.p.PaginationApplication : Running with Spring Boot v2.3.5.RELEASE, Spring v5.2.10.RELEASE
2021-04-12 10:08:16.432 INFO 12728 --- [ main] c.b.m.s.p.PaginationApplication : No active profile set, falling back to default profiles: default
2021-04-12 10:08:17.097 INFO 12728 --- [ main] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Starting...
2021-04-12 10:08:17.191 INFO 12728 --- [ main] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Start completed.
_ _ |_ _ _|_. ___ _ | _
| | |\/|_)(_| | |_\ |_)||_|_\
/ |
3.4.1
2021-04-12 10:08:17.870 INFO 12728 --- [ main] c.b.m.s.p.PaginationApplication : Started PaginationApplication in 1.971 seconds (JVM running for 2.675)
2021-04-12 10:08:17.886 INFO 12728 --- [extShutdownHook] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Shutdown initiated...
2021-04-12 10:08:17.886 INFO 12728 --- [extShutdownHook] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Shutdown completed.解决：
添加spring-web的启动依赖
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>