springboot集成jsp，访问jsp页面下载问题

1、导入相关依赖     （存在jsp页面下载问题，可能是缺少tomcat-embed-jasper的依赖对jsp的支持）

<parent>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-parent</artifactId>
		<version>2.1.8.RELEASE</version>
		<relativePath/> <!-- lookup parent from repository -->
	</parent>
	<dependencies>
	<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-web</artifactId>
		</dependency> 
		<!--springboot自带的tomcat并没有携带tomcat-embed-jasper的依赖(对jsp的支持的依赖)-->
    <dependency>
			<groupId>org.apache.tomcat.embed</groupId>
			<artifactId>tomcat-embed-jasper</artifactId>
		</dependency>  
	</dependencies>

 2、配置application.properties文件

spring.mvc.view.prefix=/pages
spring.mvc.view.suffix=.jsp

3、controller层及springboot启动类

@Controller
public class IndexController {
	 @RequestMapping("/index")
  public ModelAndView index(){
	 
	  ModelAndView mv=new ModelAndView();
	  mv.setViewName("/index");
	  return mv;
  }
}

@SpringBootApplication

public class App {
   public static void main(String[] args) {
	SpringApplication.run(App.class, args);
}
}

 注：如果没有使用springboot自带的tomcat，使用外部tomcat的

添加依赖依赖：

<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-tomcat</artifactId>    //spring-boot-starter-tomcat里面有tomcat-embed-jasper依赖
			<scope>provided</scope>
		</dependency>