spring boot 项目增加flyway的使用遇到问题解决

测试项目基础来源于官网例子：https://github.com/spring-projects/spring-boot/tree/master/spring-boot-samples/spring-boot-sample-flyway

官网例子修改后目录结构如图：

成功完成官方例子的运行和测试后，迫不及待的想把flyway集成到自己搭建项目中使用，但是每次都是在还未加载flyway就开始进行model的扫描。

遇到问题：

在遇到需要先加载数据方面的操作，都需要在flyway执行完毕后才能加载不然会出现找不到新增的表或者修改的表结构、新增表数据。

解决办法：

在对应的bean上加上@DependsOn注解

实际项目中开启hibernate事务，代码如下：

@Configuration
@EnableTransactionManagement(proxyTargetClass = true)
public class HibernateConfig {
    @Value("${hibernate.hbm2ddl.auto}")
    private String auto;
    @Value("${hibernate.dialect}")
    private String dialect;
    @Value("${hibernate.show_sql}")
    private String show_sql;
    @Value("${hibernate.packagesToScan}")
    private String packagesToScan;

    @Bean(name = "sessionFactory")
    @DependsOn("flywayInitializer")
    public SessionFactory sessionFactory(DataSource dataSource) {
        LocalSessionFactoryBean bean = new LocalSessionFactoryBean();
        bean.setDataSource(dataSource);

        Properties props = new Properties();
        props.put("hibernate.hbm2ddl.auto", auto);
        props.put("hibernate.dialect", dialect);
        props.put("hibernate.show_sql", show_sql);
        bean.setHibernateProperties(props);

        bean.setPhysicalNamingStrategy(PhysicalNamingStrategyStandardImpl.INSTANCE);

        bean.setPackagesToScan(StringUtils.split(packagesToScan, ","));
        try {
            bean.afterPropertiesSet();
            return bean.getObject();
        } catch (Exception e) {
            e.printStackTrace();
            throw new RuntimeException(e);
        }
    }

    @Bean
    @DependsOn("flywayInitializer")
    public HibernateTransactionManager transactionManager(SessionFactory sessionFactory)
                                                                                        throws IOException {
        if (sessionFactory == null) {
            return null;
        }
        return new HibernateTransactionManager(sessionFactory);
    }

}

pom.xml配置清单：

	4.0.0
	
		org.springframework.boot
		spring-boot-starter-parent
		1.5.3.RELEASE
	
	spring-boot-flyway
	Flyway Sample
	Flyway Sample
	
		
		
			org.springframework.boot
			spring-boot-starter-data-jpa
		
		
			org.springframework.boot
			spring-boot-starter-web
		
		
			org.springframework.boot
			spring-boot-actuator
		
		
			org.flywaydb
			flyway-core
		
		
		
			mysql
			mysql-connector-java
		
	
	
		
			
				org.springframework.boot
				spring-boot-maven-plugin
			
		
	

application.properties配置清单：

#datasource
spring.datasource.username=root
spring.datasource.password=123456
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
spring.datasource.url=jdbc:mysql://localhost:3306/twd?useUnicode=true&characterEncoding=UTF-8
spring.datasource.jdbcInterceptors=org.apache.tomcat.jdbc.pool.interceptor.ConnectionState;org.apache.tomcat.jdbc.pool.interceptor.StatementFinalizer

#spring jpa
spring.jpa.hibernate.ddl-auto=validate
spring.jpa.hibernate.naming.physical-strategy=org.hibernate.boot.model.naming.PhysicalNamingStrategyStandardImpl
spring.jpa.show-sql=true

# FLYWAY (FlywayProperties)
flyway.baseline-version=1
flyway.enabled=true
flyway.baseline-on-migrate=true
flyway.locations=classpath:db/migration/{vendor}
flyway.sql-migration-prefix=V
flyway.sql-migration-suffix=.sql

注意：fly.locations中最好加上/{vendor}，这样在连接不同数据库源时，会执行不同目录下的sql

V1_1__create.sql清单：

DROP TABLE IF EXISTS `PERSON`;
CREATE TABLE `PERSON` (
	`id` BIGINT(20) NOT NULL AUTO_INCREMENT,
	`first_name` varchar(255) not null,
	`last_name` varchar(255) not null,
	PRIMARY KEY (`ID`)
) ENGINE=InnoDB DEFAULT CHARSET=gbk;

V1_1__create.sql清单：

delete from `PERSON`;
insert into `PERSON` (first_name, last_name) values ('Dave', 'Syer');