Ask: SpringBoot 2.0.3 programmatically integrates jsp;jsp pages without rendering but returns the entire page string directly

using springBoot to integrate the jsp,controller,mybatis is all integrated, but when I visit the jsp page, I find that the page is not rendered, but the entire page string is returned directly.

the jsp page is as follows

controller

jspViewResolver bean;

500.

http://localhost:8080/hello

you can see from the result that the page is not rendered.
has tried to write the following configuration directly in properties, but the result is the same. Try to access it with another browser, and the result is the same.

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

maven package jar

 <packaging>jar</packaging>
    <build>
        <finalName>ROOT</finalName>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.5.1</version>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-source-plugin</artifactId>
                <version>2.2.1</version>
                <configuration>
                    <attach>true</attach>
                </configuration>
                <executions>
                    <execution>
                        <phase>compile</phase>
                        <goals>
                            <goal>jar</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
        </plugins>
        <resources>
            <resource>
                <directory>src/main/resources</directory>
            </resource>
            <resource>
                <directory>src/main/webapp</directory>
            </resource>
            <resource>
                <directory>src/main/java</directory>
                <includes>
                    <include>**/*.xml</include>
                </includes>
            </resource>
        </resources>
    </build>

request in filefox RESTClient

header is as follows


    Status Code: 200
    Accept-Ranges: bytes
    Content-Language: zh-CN
    Content-Length: 315
    Date: Sat, 16 Jun 2018 08:51:57 GMT
    ETag: W/"315-1529136546000"
    Last-Modified: Sat, 16 Jun 2018 08:09:06 GMT

body is as follows

<%@page contentType="text/html;charset=UTF-8" language="java" %>
<%@include file="/WEB-INF/include/taglib.jsp" %>
<!DOCTYPE HTML>
<html>
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
    <title>Helloworld</title>
</head>
<body>
<h1>hello ${account.accountName}</h1>
</body>
</html>

<dependency> <groupId>org.apache.tomcat.embed</groupId> <artifactId>tomcat-embed-jasper</artifactId> <scope>provided</scope> </dependency>