Spring，抽象类和注释 [英] Spring, abstract class and annotations

问题描述

我有一个非常简单的抽象类

I've got a pretty simple abstract class

public abstract class AbstractServiceActions {

    @Autowired
    protected DatabaseModel dbModel;

    protected User user;
    protected boolean complete;
    protected String serviceResult;

    public AbstractServiceActions(User user) {
        this.user = user;
        this.serviceResult = "";
    }

    public abstract String doAction();
    }

现在你可以看到，我正在尝试自动装配DatabaseModel。但在我的扩展类中，我只接受dbModel的null。

Now you can see, I'm trying to autowire the DatabaseModel. But in my extended class I only recieve null for the dbModel.

@Component
public class CreateDatabaseAction extends AbstractServiceActions {
....
}

问题：我在这里尝试一些不可能的事情吗？

Question: Am I trying something impossible here?

推荐答案

您的设置似乎没问题。原因可能在于其他地方。也许您使用 new CreateDatabaseAction（）来实例化该类，而不是让spring执行此操作。

Your setup seems fine. The reason perhaps lies elsewhere. Maybe you are instantiating the class with new CreateDatabaseAction(), rather than letting spring do this.

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