新增如下依賴：

<!--servlet依賴 -->
<dependency>
  <groupId>javax.servlet</groupId>
  <artifactId>javax.servlet-api</artifactId>
  <version>3.1.0</version>
  <scope>provided</scope>
</dependency>

<!--jstl依賴 -->
<dependency>
  <groupId>javax.servlet</groupId>
  <artifactId>jstl</artifactId>
</dependency>

<!--使jsp頁面生效 -->
<dependency>
  <groupId>org.apache.tomcat.embed</groupId>
  <artifactId>tomcat-embed-jasper</artifactId>
</dependency>
 

同時，注意在application.properties下新增對應的jsp解析

spring.mvc.view.prefix=/WEB-INF/views/
spring.mvc.view.suffix=.jsp