spring - 使用spring从内部类创建bean

Question

我试图在下面定义一个类。 Spring 没有实例化 bean。

    @Component
    public class A{
        @Component
        public class B{
         }
     }

有什么方法可以让 Spring 像上面那样创建 bean。

Answer 1

我不这么认为，因为内部类不能没有它的封闭类而存在。因此它可以只能注入(inject)到封闭的 Bean 中。

From Spring documentations:

An inner bean definition does not require a defined id or name; the container ignores these values. It also ignores the scope flag. Inner beans are always anonymous and they are always created with the outer bean. It is not possible to inject inner beans into collaborating beans other than into the enclosing bean.

我认为只有 static 才有可能内部类而不是 not-static inner类。

这应该有效:

    @Component
    public class A{
        @Component
        public static class B{
         }
     }