org.hibernate.MappingException：属性映射的列数错误

Question

我练习了spring框架和数据库（PostgreSQL），并获得了IntelliJ（Modules JPA）表，尝试运行时遇到了这个异常。

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: property mapping has wrong number of columns: com.whoim.bootloader.entitys.TblConversation.tblUsersByCreatorIdConversation type: com.whoim.bootloader.entitys.TblUsers

我是基于IntelliJ（模块JPA）的持久性生成此代码并重构Lombok的

package com.whoim.bootloader.entitys;

    import lombok.*;

    import javax.persistence.*;
    import java.sql.Timestamp;
    import java.util.Collection;

    @Data
    @Entity
    @Table(name = "tbl_conversation", schema = "public", catalog = "d1fu1ri15o3ia3")
    public class TblConversation {
        @Id@Column(name = "id_conversation")
        private int idConversation;
        @Basic@Column(name = "conversation_title")
        private String conversationTitle;
        @Basic@Column(name = "creator_id_conversation")
        private int creatorIdConversation;
        @Basic@Column(name = "conversation_channel_id")
        private String conversationChannelId;
        @Basic@Column(name = "conversation_created_at")
        private Timestamp conversationCreatedAt;
        @Basic@Column(name = "conversation_updated_at")
        private Timestamp conversationUpdatedAt;
        @Basic@Column(name = "conversation_deleted_at")
        private Timestamp conversationDeletedAt;

        @ManyToOne
        @JoinColumns({
                @JoinColumn(name = "creator_id_conversation", referencedColumnName = "id_user", nullable = false, insertable = true, updatable = true),
                @JoinColumn(name = "creator_id_conversation", referencedColumnName = "id_user", nullable = false)})
        private TblUsers tblUsersByCreatorIdConversation;

        @OneToMany(mappedBy = "tblConversationByDeletedConversationsConversationId")
        private Collection<TblDeletedConversations> tblDeletedConversationsByIdConversation;
        @OneToMany(mappedBy = "tblConversationByConversationIdMessages")
        private Collection<TblMessages> tblMessagesByIdConversation;
        @OneToMany(mappedBy = "tblConversationByConversationIdParticipants")
        private Collection<TblParticipants> tblParticipantsByIdConversation;

    }

Answer 1

我认为按照标准，您的映射应该如下：

    @Basic@Column(name = "creator_id_conversation", insertable=false, updatable=false)
    private int creatorIdConversation;

    @ManyToOne
    @JoinColumn(name = "creator_id_conversation"
              , referencedColumnName = "id_user", nullable = false)})
    private TblUsers tblUsersByCreatorIdConversation;