Java 如何使用hibernate将三个表映射到一起

下面是我的三张桌子。 我在使用@OneToMany将这三个表映射到一起时遇到问题。我不确定设置这三个实体的正确方法。谢谢

有很多问题的话题

有许多答案选项的问题

CREATE TABLE `topic` (
  `topic_id` int(11) unsigned NOT NULL AUTO_INCREMENT,
  `name` varchar(100) default null,
  PRIMARY KEY (`topic_id`)
) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8;

CREATE TABLE `question` (
  `question_id` int unsigned NOT NULL AUTO_INCREMENT,
  `topic_id` int unsigned NOT NULL,
  `question` varchar(100) NOT NULL,
  `answer` varchar(100) NOT NULL,
  PRIMARY KEY (`question_id`),
  KEY `topic_id` (`topic_id`),
  CONSTRAINT `items_ibfk_1` FOREIGN KEY (`topic_id`) REFERENCES `topic` (`topic_id`)
) ENGINE=InnoDB AUTO_INCREMENT=2 DEFAULT CHARSET=utf8;

CREATE TABLE `option` (
  `option_id` int(11) unsigned NOT NULL AUTO_INCREMENT,
  `question_id` int(11) unsigned NOT NULL,
  `option` varchar(100) not null,
  PRIMARY KEY (`option_id`),
  KEY `question_id` (`question_id`),
  CONSTRAINT `items_ibfk_2` FOREIGN KEY (`question_id`) REFERENCES `question` (`question_id`)
) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8;

下面是代码片段：
@实体
课堂主题
{
//其他领域
@OneToMany（mappedBy=“topic”）
私人名单问题；
}
@实体
课堂提问
{
//其他领域
@许多酮
@JoinColumn（name=“topic\u id”）
私人话题；
@OneToMany（mappedBy=“问题”）
私人选择权；
}
@实体
类选项
{
//其他领域
@许多酮
@JoinColumn（name=“question\u id”）
私人问题；
}

下面是我如何设置三个实体的。 但应用程序运行失败：

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in class path resource [org/springframework/boot/autoconfigure/orm/jpa/HibernateJpaConfiguration.class]: Invocation of init method failed; nested exception is org.hibernate.AnnotationException: Illegal attempt to map a non collection as a @OneToMany, @ManyToMany or @CollectionOfElements: com.generator.ExamMaker.entity.Question.options

主题实体

@Entity
@Table(name="topic")
public class Topic {

    @Id
    @GeneratedValue(strategy=GenerationType.IDENTITY)
    @Column(name="topic_id")
    private int id;
    
    @Column(name="name")
    private String name;
    
    @OneToMany(mappedBy="topic")
    private List<Question> questions;
    
    // Define Constructors
    public Topic() {
    }

    public Topic(String name) {
        this.name = name;
    }

    // Define Getter/Setter
    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public List<Question> getQuestions() {
        return questions;
    }

    public void setQuestions(List<Question> questions) {
        this.questions = questions;
    }   

}

期权实体

@Entity
@Table(name="question")
public class Question {

    @Id
    @GeneratedValue(strategy=GenerationType.IDENTITY)
    @Column(name="question_id")
    private int id;
    
    @Column(name="question")
    private String question;
    
    @Column(name="answer")
    private String answer;
    
    @Column(name="topic_id")
    private int topic_id;
    
    @ManyToOne
    @JoinColumn(name="topic_id")
    private Topic topic;

    @OneToMany(mappedBy="question")
    private Option options;
    
    // Define Constructors
    public Question() {}

    public Question(String question, String answer, int topic_id) {
        this.question = question;
        this.answer = answer;
        this.topic_id = topic_id;
    }

    // Define Getter/Setter
    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getQuestion() {
        return question;
    }

    public void setQuestion(String question) {
        this.question = question;
    }

    public String getAnswer() {
        return answer;
    }

    public void setAnswer(String answer) {
        this.answer = answer;
    }

    public int getTopic_id() {
        return topic_id;
    }

    public void setTopic_id(int topic_id) {
        this.topic_id = topic_id;
    }

    public Topic getTopic() {
        return topic;
    }

    public void setTopic(Topic topic) {
        this.topic = topic;
    }

    public Option getOptions() {
        return options;
    }

    public void setOptions(Option options) {
        this.options = options;
    }
}

@Entity
@Table(name="option")
public class Option {
    
    @Id
    @GeneratedValue(strategy=GenerationType.IDENTITY)
    @Column(name="option_id")
    private int id;
    
    @Column(name="option")
    private String option;
    
    @Column(name="question_id")
    private int question_id;
    
    @ManyToOne
    @JoinColumn(name="question_id")
    private Question question;
    
    // Define Constructors
    public Option() {}

    public Option(String option, int question_id) {
        this.option = option;
        this.question_id = question_id;
    }

    // Define Getter/Setter
    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getOption() {
        return option;
    }

    public void setOption(String option) {
        this.option = option;
    }

    public int getQuestion_id() {
        return question_id;
    }

    public void setQuestion_id(int question_id) {
        this.question_id = question_id;
    }
}

---

在pom.xml中，我更新了版本，但仍然给出了相同的错误

<?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>2.4.4</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.generator</groupId>
    <artifactId>ExamMaker</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>ExamMaker-Backend</name>
    <description>Demo project for Spring Boot</description>
    <properties>
        <java.version>1.8</java.version>
        <maven-jar-plugin.version>3.1.1</maven-jar-plugin.version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jpa</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <scope>runtime</scope>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <scope>runtime</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>

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

</project>

4.0.0
org.springframework.boot
spring启动程序父级
2.4.4
com.generator
ExamMaker
0.0.1-快照
ExamMaker后端
SpringBoot的演示项目
1.8
3.1.1
org.springframework.boot
spring引导启动器数据jpa
org.springframework.boot
SpringBootStarterWeb
org.springframework.boot
弹簧靴开发工具
运行时
真的
mysql
mysql连接器java
运行时
org.springframework.boot
弹簧起动试验
测试
org.springframework.boot
springbootmaven插件

错误消息

2021-05-06 19:51:40.142  INFO 2161 --- [  restartedMain] o.apache.catalina.core.StandardService   : Stopping service [Tomcat]
2021-05-06 19:51:40.146  INFO 2161 --- [  restartedMain] ConditionEvaluationReportLoggingListener : 

Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2021-05-06 19:51:40.148 ERROR 2161 --- [  restartedMain] o.s.boot.SpringApplication               : Application run failed

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in class path resource [org/springframework/boot/autoconfigure/orm/jpa/HibernateJpaConfiguration.class]: Invocation of init method failed; nested exception is javax.persistence.PersistenceException: [PersistenceUnit: default] Unable to build Hibernate SessionFactory; nested exception is org.hibernate.MappingException: Repeated column in mapping for entity: com.generator.ExamMaker.entity.Question column: topic_id (should be mapped with insert="false" update="false")
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1786) ~[spring-beans-5.3.5.jar:5.3.5]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:602) ~[spring-beans-5.3.5.jar:5.3.5]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:524) ~[spring-beans-5.3.5.jar:5.3.5]
    at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335) ~[spring-beans-5.3.5.jar:5.3.5]
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.3.5.jar:5.3.5]
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) ~[spring-beans-5.3.5.jar:5.3.5]
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208) ~[spring-beans-5.3.5.jar:5.3.5]
    at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1154) ~[spring-context-5.3.5.jar:5.3.5]
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:908) ~[spring-context-5.3.5.jar:5.3.5]
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:583) ~[spring-context-5.3.5.jar:5.3.5]
    at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:144) ~[spring-boot-2.4.4.jar:2.4.4]
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:769) [spring-boot-2.4.4.jar:2.4.4]
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:761) [spring-boot-2.4.4.jar:2.4.4]
    at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:426) [spring-boot-2.4.4.jar:2.4.4]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:326) [spring-boot-2.4.4.jar:2.4.4]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1313) [spring-boot-2.4.4.jar:2.4.4]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1302) [spring-boot-2.4.4.jar:2.4.4]
    at com.generator.ExamMaker.ExamMakerBackendApplication.main(ExamMakerBackendApplication.java:10) [classes/:na]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_131]
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_131]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_131]
    at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_131]
    at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49) [spring-boot-devtools-2.4.4.jar:2.4.4]
Caused by: javax.persistence.PersistenceException: [PersistenceUnit: default] Unable to build Hibernate SessionFactory; nested exception is org.hibernate.MappingException: Repeated column in mapping for entity: com.generator.ExamMaker.entity.Question column: topic_id (should be mapped with insert="false" update="false")
    at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.buildNativeEntityManagerFactory(AbstractEntityManagerFactoryBean.java:421) ~[spring-orm-5.3.5.jar:5.3.5]
    at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet(AbstractEntityManagerFactoryBean.java:396) ~[spring-orm-5.3.5.jar:5.3.5]
    at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.afterPropertiesSet(LocalContainerEntityManagerFactoryBean.java:341) ~[spring-orm-5.3.5.jar:5.3.5]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1845) ~[spring-beans-5.3.5.jar:5.3.5]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1782) ~[spring-beans-5.3.5.jar:5.3.5]
    ... 22 common frames omitted
Caused by: org.hibernate.MappingException: Repeated column in mapping for entity: com.generator.ExamMaker.entity.Question column: topic_id (should be mapped with insert="false" update="false")
    at org.hibernate.mapping.PersistentClass.checkColumnDuplication(PersistentClass.java:862) ~[hibernate-core-5.4.29.Final.jar:5.4.29.Final]
    at org.hibernate.mapping.PersistentClass.checkPropertyColumnDuplication(PersistentClass.java:880) ~[hibernate-core-5.4.29.Final.jar:5.4.29.Final]
    at org.hibernate.mapping.PersistentClass.checkColumnDuplication(PersistentClass.java:902) ~[hibernate-core-5.4.29.Final.jar:5.4.29.Final]
    at org.hibernate.mapping.PersistentClass.validate(PersistentClass.java:634) ~[hibernate-core-5.4.29.Final.jar:5.4.29.Final]
    at org.hibernate.mapping.RootClass.validate(RootClass.java:267) ~[hibernate-core-5.4.29.Final.jar:5.4.29.Final]
    at org.hibernate.boot.internal.MetadataImpl.validate(MetadataImpl.java:354) ~[hibernate-core-5.4.29.Final.jar:5.4.29.Final]
    at org.hibernate.internal.SessionFactoryImpl.<init>(SessionFactoryImpl.java:298) ~[hibernate-core-5.4.29.Final.jar:5.4.29.Final]
    at org.hibernate.boot.internal.SessionFactoryBuilderImpl.build(SessionFactoryBuilderImpl.java:468) ~[hibernate-core-5.4.29.Final.jar:5.4.29.Final]
    at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:1259) ~[hibernate-core-5.4.29.Final.jar:5.4.29.Final]
    at org.springframework.orm.jpa.vendor.SpringHibernateJpaPersistenceProvider.createContainerEntityManagerFactory(SpringHibernateJpaPersistenceProvider.java:58) ~[spring-orm-5.3.5.jar:5.3.5]
    at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:365) ~[spring-orm-5.3.5.jar:5.3.5]
    at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.buildNativeEntityManagerFactory(AbstractEntityManagerFactoryBean.java:409) ~[spring-orm-5.3.5.jar:5.3.5]
    ... 26 common frames omitted

2021-05-06 19:51:40.142信息2161---[restartedMain]o.apache.catalina.core.StandardService:停止服务[Tomcat]
2021-05-06 19:51:40.146信息2161-[restartedMain]条件评估报告记录侦听器：
启动ApplicationContext时出错。要显示条件报告，请在启用“调试”的情况下重新运行应用程序。
2021-05-06 19:51:40.148错误2161---[restartedMain]o.s.boot.SpringApplication:应用程序运行失败
org.springframework.beans.factory.BeanCreationException:创建名为“entityManagerFactory”的bean时出错，该bean在类路径资源[org/springframework/boot/autoconfigure/orm/jpa/hibernatejPacConfiguration.class]中定义：调用init方法失败；嵌套异常为javax.persistence.PersistenceException:[PersistenceUnit:default]无法构建Hibernate SessionFactory；嵌套异常为org.hibernate.MappingException:实体映射中的重复列：com.generator.ExamMaker.entity.Question列：topic\u id（应使用insert=“false”update=“false”进行映射）
在org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean（AbstractAutowireCapableBeanFactory.java:1786）~[spring-beans-5.3.5.jar:5.3.5]
在org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean（AbstractAutowireCapableBeanFactory.java:602）~[spring-beans-5.3.5.jar:5.3.5]
在org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean（AbstractAutowireCapableBeanFactory.java:524）~[spring-beans-5.3.5.jar:5.3.5]
在org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0（AbstractBeanFactory.java:335）~[spring-beans-5.3.5.jar:5.3.5]
在org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton（DefaultSingletonBeanRegistry.java:234）~[spring-beans-5.3.5.jar:5.3.5]
在org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean（AbstractBeanFactory.java:333）~[spring-beans-5.3.5.jar:5.3.5]
在org.springframework.beans.factory.support.AbstractBeanFactory.getBean（AbstractBeanFactory.java:208）~[spring-beans-5.3.5.jar:5.3.5]
在org.springframework.context.support.AbstractApplicationContext.getBean（AbstractApplicationContext.java:1154）~[spring-context-5.3.5.jar:5.3.5]
在org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization（AbstractApplicationContext.java:908）~[spring-context-5.3.5.jar:5.3.5]
在org.springframework.context.support.AbstractApplicationContext.refresh（AbstractApplicationContext.java:583）~[spring-context-5.3.5.jar:5.3.5]
在org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh（ServletWebServerApplicationContext.java:144）~[spring-boot-2.4.4.jar:2.4.4]
在org.springframework.boot.SpringApplication.refresh（SpringApplication.java:769）[spring-boot-2.4.4.jar:2.4.4]
在org.springframework.boot.SpringApplication.refresh（SpringApplication.java:761）[spring-boot-2.4.4.jar:2.4.4]
位于org.springframework.boot.SpringApplication.refreshContext（SpringApplication.java:426）[spring-boot-2.4.4.jar:2.4.4]
在org.springframework.boot.SpringApplication.run（SpringApplication.java:326）[spring-boot-2.4.4.jar:2.4.4]
在org.springframework.boot.SpringApplication.run（SpringApplication.java:1313）[spring-boot-2.4.4.jar:2.4.4]
在org.springframework.boot.SpringApplication.run（SpringApplication.java:1302）[spring-boot-2.4.4.jar:2.4.4]
位于com.generator.ExamMaker.ExamMakerBackendApplication.main（ExamMakerBackendApplication.java:10）[classes/：na]
在sun.reflect.NativeMethodAccessorImpl.invoke0（本机方法）~[na:1.8.0_131]
在sun.reflect.NativeMethodAccessorImpl.invoke（NativeMethodAccessorImpl.java:62）~[na:1.8.0131]
在sun.reflect.DelegatingMethodAccessorImpl.invoke（DelegatingMethodAccessorImpl.java:43）~[na:1.8.0131]
在java.lang.reflect.Method.invoke（Method.java:498）~[na:1.8.0131]
在org.springframework.boot.devtools.restart.RestartLauncher.run（RestartLauncher.java:49）[spring-boot-devtools-2.4.4.jar:2.4.4]
原因：javax.persistence.PersistenceException:[Pers]
2021-05-06 19:51:40.142  INFO 2161 --- [  restartedMain] o.apache.catalina.core.StandardService   : Stopping service [Tomcat]
2021-05-06 19:51:40.146  INFO 2161 --- [  restartedMain] ConditionEvaluationReportLoggingListener : 

Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2021-05-06 19:51:40.148 ERROR 2161 --- [  restartedMain] o.s.boot.SpringApplication               : Application run failed

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in class path resource [org/springframework/boot/autoconfigure/orm/jpa/HibernateJpaConfiguration.class]: Invocation of init method failed; nested exception is javax.persistence.PersistenceException: [PersistenceUnit: default] Unable to build Hibernate SessionFactory; nested exception is org.hibernate.MappingException: Repeated column in mapping for entity: com.generator.ExamMaker.entity.Question column: topic_id (should be mapped with insert="false" update="false")
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1786) ~[spring-beans-5.3.5.jar:5.3.5]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:602) ~[spring-beans-5.3.5.jar:5.3.5]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:524) ~[spring-beans-5.3.5.jar:5.3.5]
    at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335) ~[spring-beans-5.3.5.jar:5.3.5]
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.3.5.jar:5.3.5]
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333) ~[spring-beans-5.3.5.jar:5.3.5]
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208) ~[spring-beans-5.3.5.jar:5.3.5]
    at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1154) ~[spring-context-5.3.5.jar:5.3.5]
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:908) ~[spring-context-5.3.5.jar:5.3.5]
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:583) ~[spring-context-5.3.5.jar:5.3.5]
    at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:144) ~[spring-boot-2.4.4.jar:2.4.4]
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:769) [spring-boot-2.4.4.jar:2.4.4]
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:761) [spring-boot-2.4.4.jar:2.4.4]
    at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:426) [spring-boot-2.4.4.jar:2.4.4]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:326) [spring-boot-2.4.4.jar:2.4.4]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1313) [spring-boot-2.4.4.jar:2.4.4]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1302) [spring-boot-2.4.4.jar:2.4.4]
    at com.generator.ExamMaker.ExamMakerBackendApplication.main(ExamMakerBackendApplication.java:10) [classes/:na]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_131]
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_131]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_131]
    at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_131]
    at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49) [spring-boot-devtools-2.4.4.jar:2.4.4]
Caused by: javax.persistence.PersistenceException: [PersistenceUnit: default] Unable to build Hibernate SessionFactory; nested exception is org.hibernate.MappingException: Repeated column in mapping for entity: com.generator.ExamMaker.entity.Question column: topic_id (should be mapped with insert="false" update="false")
    at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.buildNativeEntityManagerFactory(AbstractEntityManagerFactoryBean.java:421) ~[spring-orm-5.3.5.jar:5.3.5]
    at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet(AbstractEntityManagerFactoryBean.java:396) ~[spring-orm-5.3.5.jar:5.3.5]
    at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.afterPropertiesSet(LocalContainerEntityManagerFactoryBean.java:341) ~[spring-orm-5.3.5.jar:5.3.5]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1845) ~[spring-beans-5.3.5.jar:5.3.5]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1782) ~[spring-beans-5.3.5.jar:5.3.5]
    ... 22 common frames omitted
Caused by: org.hibernate.MappingException: Repeated column in mapping for entity: com.generator.ExamMaker.entity.Question column: topic_id (should be mapped with insert="false" update="false")
    at org.hibernate.mapping.PersistentClass.checkColumnDuplication(PersistentClass.java:862) ~[hibernate-core-5.4.29.Final.jar:5.4.29.Final]
    at org.hibernate.mapping.PersistentClass.checkPropertyColumnDuplication(PersistentClass.java:880) ~[hibernate-core-5.4.29.Final.jar:5.4.29.Final]
    at org.hibernate.mapping.PersistentClass.checkColumnDuplication(PersistentClass.java:902) ~[hibernate-core-5.4.29.Final.jar:5.4.29.Final]
    at org.hibernate.mapping.PersistentClass.validate(PersistentClass.java:634) ~[hibernate-core-5.4.29.Final.jar:5.4.29.Final]
    at org.hibernate.mapping.RootClass.validate(RootClass.java:267) ~[hibernate-core-5.4.29.Final.jar:5.4.29.Final]
    at org.hibernate.boot.internal.MetadataImpl.validate(MetadataImpl.java:354) ~[hibernate-core-5.4.29.Final.jar:5.4.29.Final]
    at org.hibernate.internal.SessionFactoryImpl.<init>(SessionFactoryImpl.java:298) ~[hibernate-core-5.4.29.Final.jar:5.4.29.Final]
    at org.hibernate.boot.internal.SessionFactoryBuilderImpl.build(SessionFactoryBuilderImpl.java:468) ~[hibernate-core-5.4.29.Final.jar:5.4.29.Final]
    at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:1259) ~[hibernate-core-5.4.29.Final.jar:5.4.29.Final]
    at org.springframework.orm.jpa.vendor.SpringHibernateJpaPersistenceProvider.createContainerEntityManagerFactory(SpringHibernateJpaPersistenceProvider.java:58) ~[spring-orm-5.3.5.jar:5.3.5]
    at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:365) ~[spring-orm-5.3.5.jar:5.3.5]
    at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.buildNativeEntityManagerFactory(AbstractEntityManagerFactoryBean.java:409) ~[spring-orm-5.3.5.jar:5.3.5]
    ... 26 common frames omitted