我想将此Spring属性文件用于数据库配置。
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,在删除所有表后数据库为空时,由于首先执行迁移脚本,因此我收到SQL错误。
如何首先配置JPA以创建表,然后配置运行迁移脚本的途径?
答案 0 :(得分:2)
Flyway迁移在休眠执行之前运行。您可以通过查看启动顺序来完成。为此,您需要添加以下配置类:
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);
}
}
看看this的答案,您会获得详细信息。
答案 1 :(得分:0)
为了避免循环依赖,可以这样写:
@Configuration
public class FlywayConfig {
@Bean
FlywayMigrationInitializer flywayInitializer(Flyway flyway) {
return new FlywayMigrationInitializer(flyway, (f) -> {
});
}
static class Dummy {
}
@Bean
@DependsOn("entityManagerFactory")
Dummy delayedFlywayInitializer(Flyway flyway, FlywayProperties flywayProperties) {
if (flywayProperties.isEnabled())
flyway.migrate();
return new Dummy();
}
}
灵感来自this答案