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Legal Studies使用 MySQL 创建表格 - Hibernate
要创建一个表，你需要在 application.properties 中插入以下代码行 −
spring.jpa.hibernate.ddl-auto=update
在这里，Hibernate 会自动创建表 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://127.0.0.1:3306/sampledatabase spring.datasource.username=root spring.datasource.password=123456
demo88 实体类如下，用于创建表列 −
示例
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 −
示例
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“以 Java 应用程序方式运行”菜单。应用程序将运行，并创建表。
这将产生以下输出 −
输出
为了验证，我们来显示表 −
mysql> show create table demo88;
这将产生以下输出 −
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)
更新于: 11-12-2020
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