我希望我的项目创建一个表，它保存在MySQL中，问题是，当保存所有的值都为空
我被迫写别的东西，但我不知道要添加什么，这个项目可以通过mvc来完成，通过写入保存后更新删除控制器，我这样做后就有可能解决现在出现的问题
我使用docker docker-compose.yaml

version: '3.8'

services:
  db:
    image: mysql
    command: --default-authentication-plugin=mysql_native_password
    ports:
      - 3306:3306
    environment:
      MYSQL_ROOT_PASSWORD: example
  adminer:
    image: adminer
    restart: always
    ports:
      - 8081:8080

application.yaml

spring:
  datasource:
    url: jdbc:mysql://localhost:3306/cimpoiesu
    username: root
    password: example
  jpa:
    showSql: true
    hibernate:
      ddl-auto: create

pom.xml

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

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

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

<dependency>
    <groupId>org.projectlombok</groupId>            
    <artifactId>lombok</artifactId>
</dependency>

主类

package com.example.demo;

import org.springframework.boot.CommandLineRunner;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.Bean;

import java.math.BigDecimal;
import java.time.LocalDateTime;
import java.util.List;

@SpringBootApplication
public class DemoApplication {

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

   @Bean
   CommandLineRunner runner(StudentRepository repository) {
      return args -> {
         Address address = new Address(
               "Z",
               "X",
               "C"
         );
         Student student = new Student(
               "Danila",
               "Cimpoiesu",
               "danila.cimpoiesu@mail.ru",
               Gender.MALE,
               address,
               List.of("Computer science"),
               BigDecimal.TEN,
               LocalDateTime.now()
         );

         repository.save(student);
      };
   }
}

package com.example.demo;

import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.stereotype.Repository;

@Repository
public interface StudentRepository extends
        JpaRepository<Student, Long> {
}

package com.example.demo;

import jakarta.persistence.Entity;
import jakarta.persistence.GeneratedValue;
import jakarta.persistence.GenerationType;
import lombok.Data;
import jakarta.persistence.Id;

import java.math.BigDecimal;
import java.time.LocalDateTime;
import java.util.List;

@Data
@Entity
public class Student {
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;
    private String firstname;
    private String lastname;
    private String email;
    private Gender gender;
    private Address address;
    private List<String> favouriteSubject;
    private BigDecimal totalSpentInBooks;
    private LocalDateTime created;

    public Student() {
    }

    public Student(String firstname, String lastname, String email, Gender gender, Address address, List<String> favouriteSubject, BigDecimal totalSpentInBooks, LocalDateTime created) {
        this.firstname = firstname;
        this.lastname = lastname;
        this.email = email;
        this.gender = gender;
        this.address = address;
        this.favouriteSubject = favouriteSubject;
        this.totalSpentInBooks = totalSpentInBooks;
        this.created = created;
    }
}

package com.example.demo;

import jakarta.persistence.Embeddable;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

@Data
@AllArgsConstructor
@NoArgsConstructor
@Embeddable
public class Address {
    private String country;
    private String city;
    private String postCode;
}

package com.example.demo;

public enum Gender {
    MALE, FEMALE
}

.   ____          _            __ _ _
 /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
 \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
  '  |____| .__|_| |_|_| |_\__, | / / / /
 =========|_|==============|___/=/_/_/_/
 :: Spring Boot ::                (v3.0.5)

2023-05-30T15:54:04.647+03:00  INFO 9896 --- [           main] com.example.demo.DemoApplication         : Starting DemoApplication using Java 19 with PID 9896 (C:\Users\jesus\Desktop\plack\target\classes started by jesus in C:\Users\jesus\Desktop\plack)
2023-05-30T15:54:04.656+03:00  INFO 9896 --- [           main] com.example.demo.DemoApplication         : No active profile set, falling back to 1 default profile: "default"
2023-05-30T15:54:06.140+03:00  INFO 9896 --- [           main] .s.d.r.c.RepositoryConfigurationDelegate : Bootstrapping Spring Data JPA repositories in DEFAULT mode.
2023-05-30T15:54:06.324+03:00  INFO 9896 --- [           main] .s.d.r.c.RepositoryConfigurationDelegate : Finished Spring Data repository scanning in 158 ms. Found 1 JPA repository interfaces.
2023-05-30T15:54:07.720+03:00  INFO 9896 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat initialized with port(s): 8080 (http)
2023-05-30T15:54:07.737+03:00  INFO 9896 --- [           main] o.apache.catalina.core.StandardService   : Starting service [Tomcat]
2023-05-30T15:54:07.738+03:00  INFO 9896 --- [           main] o.apache.catalina.core.StandardEngine    : Starting Servlet engine: [Apache Tomcat/10.1.7]
2023-05-30T15:54:07.918+03:00  INFO 9896 --- [           main] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring embedded WebApplicationContext
2023-05-30T15:54:07.921+03:00  INFO 9896 --- [           main] w.s.c.ServletWebServerApplicationContext : Root WebApplicationContext: initialization completed in 3113 ms
2023-05-30T15:54:08.298+03:00  INFO 9896 --- [           main] o.hibernate.jpa.internal.util.LogHelper  : HHH000204: Processing PersistenceUnitInfo [name: default]
2023-05-30T15:54:08.423+03:00  INFO 9896 --- [           main] org.hibernate.Version                    : HHH000412: Hibernate ORM core version 6.1.7.Final
2023-05-30T15:54:08.998+03:00  INFO 9896 --- [           main] com.zaxxer.hikari.HikariDataSource       : HikariPool-1 - Starting...
2023-05-30T15:54:09.740+03:00  INFO 9896 --- [           main] com.zaxxer.hikari.pool.HikariPool        : HikariPool-1 - Added connection com.mysql.cj.jdbc.ConnectionImpl@55adcf9e
2023-05-30T15:54:09.745+03:00  INFO 9896 --- [           main] com.zaxxer.hikari.HikariDataSource       : HikariPool-1 - Start completed.
2023-05-30T15:54:09.893+03:00  INFO 9896 --- [           main] SQL dialect                              : HHH000400: Using dialect: org.hibernate.dialect.MySQLDialect
Hibernate: drop table if exists student
Hibernate: create table student (id bigint not null auto_increment, city varchar(255), country varchar(255), post_code varchar(255), created datetime(6), email varchar(255), favourite_subject varbinary(255), firstname varchar(255), gender smallint, lastname varchar(255), total_spent_in_books decimal(38,2), primary key (id)) engine=InnoDB
2023-05-30T15:54:11.908+03:00  INFO 9896 --- [           main] o.h.e.t.j.p.i.JtaPlatformInitiator       : HHH000490: Using JtaPlatform implementation: [org.hibernate.engine.transaction.jta.platform.internal.NoJtaPlatform]
2023-05-30T15:54:11.923+03:00  INFO 9896 --- [           main] j.LocalContainerEntityManagerFactoryBean : Initialized JPA EntityManagerFactory for persistence unit 'default'
2023-05-30T15:54:12.463+03:00  WARN 9896 --- [           main] JpaBaseConfiguration$JpaWebConfiguration : spring.jpa.open-in-view is enabled by default. Therefore, database queries may be performed during view rendering. Explicitly configure spring.jpa.open-in-view to disable this warning
2023-05-30T15:54:13.171+03:00  INFO 9896 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat started on port(s): 8080 (http) with context path ''
2023-05-30T15:54:13.187+03:00  INFO 9896 --- [           main] com.example.demo.DemoApplication         : Started DemoApplication in 9.612 seconds (process running for 10.486)
Hibernate: insert into student (city, country, post_code, created, email, favourite_subject, firstname, gender, lastname, total_spent_in_books) values (?, ?, ?, ?, ?, ?, ?, ?, ?, ?)

我以前做过一个使用MongoDB的项目，它工作了，我想为MySQL重做它