springboot中使用jsp

项目结构

├─src
│  ├─main
│  │  ├─java
│  │  │  └─cn
│  │  │      └─idea360
│  │  │          └─jsp
│  │  │              └─JspApplication.java
│  │  │              └─controller
│  │  │                 └─IndexController.java
│  │  ├─resources
│  │  │  ├─META-INF
│  │  │  └─static
│  │  └─webapp
│  │      └─WEB-INF
│  │          └─jsp
│  │            └─index.jsp

pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>cn.idea360</groupId>
    <artifactId>jsp</artifactId>
    <version>0.0.1</version>

    <name>jsp</name>
    <description>springboot-jsp示例</description>

    <properties>
        <java.version>11</java.version>
        <maven.compiler.source>11</maven.compiler.source>
        <maven.compiler.target>11</maven.compiler.target>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <spring-boot.version>2.7.12</spring-boot.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>

        <dependency>
            <groupId>org.apache.tomcat.embed</groupId>
            <artifactId>tomcat-embed-jasper</artifactId>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>jstl</artifactId>
        </dependency>
    </dependencies>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-dependencies</artifactId>
                <version>${spring-boot.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

</project>

application.yaml

server:
    port: 8080

spring:
    mvc:
        view:
            prefix: /WEB-INF/jsp/
            suffix: .jsp
logging:
    level:
        web: DEBUG

index.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
         pageEncoding="UTF-8"%>
Hi JSP. 现在时间是  ${now}

java

package cn.idea360.jsp.controller;

import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;

import java.text.DateFormat;
import java.util.Date;


@Controller
public class IndexController {

    // http://127.0.0.1:8080
    @RequestMapping("/")
    public ModelAndView hello(Model m) {
        ModelAndView hello = new ModelAndView("index");
        hello.addObject("now", DateFormat.getDateTimeInstance().format(new Date()));
        return hello;
    }

}

package cn.idea360.jsp;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class JspApplication {

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

}