导入依赖

<!-- JSTL for JSP  spring boot搭建web项目，跳转到jsp一定要添加下面的jar包，否则出现跳转的时候，变成下载的功能，保存该页面-->
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>jstl</artifactId>
        </dependency>
 
        <!-- Need this to compile JSP -->
        <dependency>
            <groupId>org.apache.tomcat.embed</groupId>
            <artifactId>tomcat-embed-jasper</artifactId>
            <scope>provided</scope>
        </dependency>