用JPA构建实体数据表

一 代码位置

https://gitee.com/cakin24/code/tree/master/08/JpaEntityDemo

二 代码

package com.example.demo.entity;

import lombok.Data;
import javax.persistence.*;
import javax.validation.constraints.NotEmpty;
import javax.validation.constraints.Size;
import java.io.Serializable;
import java.util.Arrays;
import java.util.List;

@Entity
@Data
public class Article implements Serializable {
    @Id
    /**
     * Description: 由数据库控制,auto是程序统一控制
     */
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private long id;


    @Column(nullable = false, unique = true)
    @NotEmpty(message = "标题不能为空")
    private String title;
    /**
     * Description: 枚举类型
     */
    @Column(columnDefinition = "enum('图','图文','文')")
    private String type;//类型
    /**
     * Description:  Boolean类型默认false
     */
    private Boolean available = Boolean.FALSE;
    @Size(min = 0, max = 20)
    private String keyword;
    @Size(max = 255)
    private String description;
    @Column(nullable = false)
    private String body;

    /**
     * Description: 创建虚拟字段
     */
    @Transient
    private List keywordlists;


    public List getKeywordlists() {
        return Arrays.asList(this.keyword.trim().split("|"));
    }

    public void setKeywordlists( List keywordlists ) {
        this.keywordlists = keywordlists;
    }
}

三 运行程序

四 生成数据表如下