执行某事.在创建bean之后或之前 [英] Execute sth. after or before bean is created

问题描述

我将spring-boot与flyway和数据源一起使用，因此这两个bean都由spring-boot自动配置.现在，我想直接在数据源之后或在初始化flyway bean之前执行foo(某些代码/SQL脚本).

I use spring-boot with flyway and a datasource, so both beans are automatically configured by spring-boot. Now I would like to execute foo(some code / a SQL script) either directly after the datasource or before the flyway bean is initialized.

我该如何在外部配置-最好使用批注-应该调用flywaydependsOn fooBean还是应该调用数据源foo的post构造?

How can I configure externally -preferably with annotations- that flyway dependsOn fooBean or that post construct of the datasource foo should be called?

是尝试更改Bean初始化顺序或注册ApplicationListener(如果可能)的更好"方法吗?

Is it the 'better' approach trying to alter the bean initialization order or registering an ApplicationListener (if possible)?

推荐答案

我猜唯一的解决方案是重写Flyway配置并添加"clean"方法调用.因此，像这样创建自己的FlywayConfig类:

I guess the only solution is to override the Flyway configuration and add the "clean" method call. So create your own FlywayConfig class like this:

@Configuration
public class FlywayConfig {

    @Autowired
    private FlywayProperties properties = new FlywayProperties();

    @Autowired(required = false)
    @FlywayDataSource
    private DataSource flywayDataSource;

    @Autowired(required = false)
    private DataSource dataSource;

    @Bean(initMethod = "migrate")
    public Flyway flyway() {
        Flyway flyway = new Flyway();
        if (this.properties.isCreateDataSource()) {
            flyway.setDataSource(this.properties.getUrl(), this.properties.getUser(),
                    this.properties.getPassword(), this.properties.getInitSqls()
                            .toArray(new String[0]));
        }
        else if (this.flywayDataSource != null) {
            flyway.setDataSource(this.flywayDataSource);
        }
        else {
            flyway.setDataSource(this.dataSource);
        }
        flyway.clean(); // <-- this drops the schema
        return flyway;
    }
}

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