springboot-jpa自动创建数据库表

第一步创建springboot项目，jpa，mysql,
代码如下:
application.yml

spring:
  datasource:
    url: jdbc:mysql://127.0.0.1:3306/springboot_test
    username: root
    password: 514730
    driver-class-name: com.mysql.jdbc.Driver
  jpa:
    hibernate:
#     更新或者创建数据表结构
      ddl-auto: update
#    控制台显示SQL
    show-sql: true

实体类

import javax.persistence.*;

@Entity
@Table(name = "person")
public class Person {
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private  Long id;

    @Column(length =50,name = "name")
    private  String  name;

    private  String email;

    private  String  gender;

    private  String  address;
}

运行springboot主配置文件，来到数据库界面管理软件。发现我们的"person"表 自动创建好了

图片.png

记得给主键ID加上:@GeneratedValue(strategy = GenerationType.IDENTITY)