springboot 整合web项目支持jsp

1.pom文件  加入下面依赖

<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<!-- servlet依赖. -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<scope>provided</scope>
</dependency>
<!--
JSTL（JSP Standard TagLibrary，JSP标准标签库)是一个不断完善的开放源代码的JSP标签库，是由apache的jakarta小组来维护的。JSTL只能运行在支持JSP1.2和Servlet2.3规范的容器上，如tomcat 4.x。在JSP2.0中也是作为标准支持的。
不然报异常信息：
javax.servlet.ServletException:Circular view path [/helloJsp]: would dispatch back to the current handler URL[/helloJsp] again. Check your ViewResolver setup! (Hint: This may be the resultof an unspecified view, due to default view name generation.)
-->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
</dependency>
<!-- tomcat的支持.-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-jasper</artifactId>
<!--<scope>provided</scope>-->
</dependency>

2.修改application.properties

# 页面默认前缀目录
spring.mvc.view.prefix=/WEB-INF/view/
# 响应页面默认后缀
spring.mvc.view.suffix=.jsp

3.webapp/WEB-INF目录下新增view目录

4.编写Controller

@Controller
public class HelloController {

@RequestMapping("/he")
public String say(Map<String,Object> map){
map.put("hello","haha");
return "hello";
}
}

5.启动springboot应用

6.浏览器访问http://127.0.0.1:8080/he