spring - 在 flyway 迁移脚本之前执行 JPA 表创建

Question

我想使用这个 Spring 属性文件来配置数据库。

spring.jmx.enabled=false
spring.datasource.jndi-name=java:/global/production
spring.datasource.driver-class-name=org.mariadb.jdbc.Driver
spring.jpa.properties.hibernate.dialect=org.hibernate.dialect.MariaDBDialect
spring.jpa.show-sql = true
spring.jpa.hibernate.ddl-auto = update
request.limit=300000
spring.flyway.baselineOnMigrate = true
spring.flyway.locations=classpath:/db/migration

代码运行良好，但不幸的是，当删除所有表后数据库为空时，我会收到 SQL 错误，因为首先执行迁移脚本。

如何先配置 JPA 来创建表，然后配置 flyway 来执行迁移脚本？

Answer 1

Flyway 迁移在休眠执行之前运行。您可以通过查看引导顺序来做到这一点。为此，您需要添加此配置类:

import org.flywaydb.core.Flyway;
import 
org.springframework.boot.autoconfigure.flyway.FlywayMigrationInitializer;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.DependsOn;

@Configuration
public class MigrationConfiguration {


/**
 * Override default flyway initializer to do nothing
 */
@Bean
FlywayMigrationInitializer flywayInitializer(Flyway flyway) {
    return new FlywayMigrationInitializer(flyway, (f) ->{} );
}


/**
 * Create a second flyway initializer to run after jpa has created the schema
 */
@Bean
@DependsOn("entityManagerFactory")
FlywayMigrationInitializer delayedFlywayInitializer(Flyway flyway) {
    return new FlywayMigrationInitializer(flyway, null);
}


}

看this回答你会得到详细信息。