要创建表,您需要将以下行插入到 application.properties -
spring.jpa.hibernate.ddl-auto=update
这里,Hibernate 将自动创建表 demo88。 application.properties代码如下 -
spring.datasource.platform=mysql spring.jpa.database-platform=org.hibernate.dialect.MySQL5InnoDBDialect spring.jpa.hibernate.ddl-auto=update server.port=8191 spring.datasource.driverClassName=com.mysql.jdbc.Driver spring.datasource.url=jdbc:mysql://localhost:3306/sampledatabase spring.datasource.username=root spring.datasource.password=123456
demo88实体类创建表格列如下 -
package com.automaticallytablecreation; import javax.persistence.Column; import javax.persistence.Entity; import javax.persistence.Id; import javax.persistence.Table; @Entity @Table public class demo88 { @Id private int id; @Column(name="name") private String name; }
主类代码如下 -
package com.automaticallytablecreation; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; @SpringBootApplication public class AutomaticTableApplication { public static void main(String[] args) { SpringApplication.run(AutomaticTableApplication.class, args); } }
现在右键单击主类,然后单击“作为 Java 应用程序运行”菜单。应用程序将运行并创建表。
这将产生以下输出 -
为了验证,让我们显示表格 -
mysql> show create table demo88;
这将产生以下输出 -
+--------+------------------------------------------------------------+| Table | Create Table | +--------+------------------------------------------------------------+| demo88 | CREATE TABLE `demo88` ( `id` int NOT NULL, `name` varchar(255) DEFAULT NULL, PRIMARY KEY (`id`)) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci | +--------+-------------------------------------------------------------+1 row in set (0.03 sec)
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