我的 spring boot 应用程序，我无法在网络上查看数据，我只得到 json 结果

Question

我是春季靴子的新人，请指教

spring-boot webapp 试图在网络上查看结果，但它只是以 Json 的形式出现。

我不知道缺少什么以及如何跟踪这个问题，尤其是没有错误消息

请检查我的控制器和 pom 文件。 请注意，我能够以 json 格式获得结果并希望获得 webview

package com.example.springboot.controller;



import com.example.springboot.model.Session;
import com.example.springboot.repository.SessionRepository;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;

import java.util.List;

@EnableWebMvc
@Controller
public class SessionController {
    @Autowired
    private SessionRepository sessionRepository;


    @GetMapping(value = "/show-session", produces = "text/html")
    public ModelAndView showSession(){
        ModelAndView muv = new ModelAndView("show-session");
        List<Session> list = sessionRepository.findAll();
        muv.addObject("sessions", list);
        return muv ;
    }

    @GetMapping("/session-form")
    public ModelAndView sessionsForm() {
        ModelAndView muv = new ModelAndView("session-form");
        Session session = new Session();
        muv.addObject("session", session);
        return muv;
    }


    @PostMapping({ "/save-session"} )
    public ModelAndView saveSession( @ModelAttribute final Session session) {
        sessionRepository.saveAndFlush(session);
        return showSession();

    }

    @GetMapping("/sessions/{id}")
    public Session get(@PathVariable("id") Long  id) {
        return sessionRepository.getReferenceById(id);
    }




    @DeleteMapping(value ="/sessions/{id}")
    public void delete(@PathVariable("id") Long id){
        sessionRepository.deleteById(id);

    }

    @PutMapping(value ="/sessions/{id}")
    public Session update(@PathVariable Long id, @RequestBody Session session){
        Session existsession = sessionRepository.getReferenceById(id);
        BeanUtils.copyProperties(session, existsession, "session_id");
        return sessionRepository.saveAndFlush(existsession);

    }

}






   
<?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>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>3.0.5</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.example</groupId>
    <artifactId>springBoot</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>springBoot</name>
    <description>springBoot</description>
    <properties>
        <java.version>17</java.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-data-jdbc</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jpa</artifactId>
        </dependency>


        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-thymeleaf</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>

        <dependency>
            <groupId>com.mysql</groupId>
            <artifactId>mysql-connector-j</artifactId>
            <scope>runtime</scope>
        </dependency>

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

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

            </plugin>
        </plugins>
    </build>

</project>

<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="utf-8">

    <title>Conference Applications</title>
    <link href="https://cdn.jsdelivr.net/npm/[email protected]/dist/css/bootstrap.min.css" rel="stylesheet"
          integrity="sha384-rbsA2VBKQhggwzxH7pPCaAqO46MgnOM80zW1RWuH61DGLwZJEdK2Kadq2F9CUG65"
          crossorigin="anonymous">
</head>

<body>
<div class="container=5">
    <h2>Session List </h2>


    <h2>
         
    
    </h2>

        <hr/>
    <a th:href="@{/session-form}" class="btn btn-primary mb-2">Add Session</a>

        <table class="table table-header table-striped">
            <thead>
            <tr>
                <th> Session Id </th>
                <th>  name </th>
                <th> description</th>
                <th> length</th>

                <script src="https://cdn.jsdelivr.net/npm/@popperjs/[email protected]/dist/umd/popper.min.js"
                        integrity="sha384-oBqDVmMz9ATKxIep9tiCxS/Z9fNfEXiDAYTujMAeBAsjFuCZSmKbSSUnQlmh/jp3"
                        crossorigin="anonymous"></script>
                <script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/js/bootstrap.min.js"
                        integrity="sha384-cuYeSxntonz0PPNlHhBs68uyIAVpIIOZZ5JqeqvYYIcEL727kskC66kF92t6Xl2V"
                        crossorigin="anonymous"></script>
            </tr>
            </thead>
            <tbody>
            <tr>
            <tr th:each = "se: ${sessions}">
            <td th:text="${se.session_id}"></td>
            <td th:text="${se.session_name}"></td>
            <td th:text="${se.session_description}"></td>
            <td th:text="${se.session_length}"></td>

            </tr>
            </tbody>
        </table>
</div>
</body>
</html>