如何在构造函数中为不是Spring-ified的对象使用autowired参数？

Question

我有一个问题，我的一些代码使用Spring bean，还有一些常规POJO。

我正在尝试将bean（数据源）注入到POJO的构造函数中（POJO是一个dao）。

代码如下所示，大约：

public class MyAppClass {
    public static void main(String[] args) {
        // xxx
                AnnotationConfigApplicationContext context = loadSpringConfiguration();
        SetupDaos setupDaosInstance = new SetupDAOs();
        setupDaosInstance.setupDAOs(); // This is where DAO constructors live
    }

public class SetupDAOs {
    public static DaoType dao1; 
    // There is a reason why dao1 isn't a bean, that aren't obvious from minimal example
    // Please don't post answers saying 
    // "you have an X-Y problem, convert dao1 into a bean"

    public void setupDAOs() {
        dao1 = new DaoType(); // We don't pass datasource here, 
    }
}

public class DaoType extends JdbcTemplate {
    // This is where trouble starts
    @Autowired ComboPooledDataSource dataSource;

    // PROBLEM! Inside the constructor, "dataSource" isn't autowired yet!
    public DaoType() {
        super();
        setDataSource(dataSource);
    }
}       

// And in one of the Bean config classes
    @Bean
    public ComboPooledDataSource loadDataSource() throws Exception {

以上代码不起作用（dataSource为null），因为根据this Q&A，

  

自动装配（来自Dunes评论的链接）在构造对象后发生。

如果“dao1”必须保留为POJO并且不是Spring创建的bean，那么有什么方法可以将autowired bean“dataSource”正确地注入其构造函数中吗？

Answer 1

传递DataSource，喜欢这应该有效：

public static void main(String[] args) {
    AnnotationConfigApplicationContext context = loadSpringConfiguration();
    Datasource dataSource = context.getBean(DataSource.class);
    SetupDaos setupDaosInstance = new SetupDAOs(dataSource);
    setupDaosInstance.setupDAOs();
}

请参阅docs