Spring. Use Java configuration to resolve circular dependencies without @ Autowired

I have circular dependency and Java configuration Although it is easy to solve it with XML configuration, I can't solve it without @ Autowired. XML configuration Beans:

public class A {
    private B b;

    public B getB() {
        return b;
    }

    public void setB(B b) {
        this.b = b;
    }
}

public class B {
    private A a;

    public A getA() {
        return a;
    }

    public void setA(A a) {
        this.a = a;
    }
}

I have tried (I have read the @ bean annotation. Spring will not call methods every time the bean is referenced, but in this case, it is actually called all the time):

@Configuration
public class Config {
    @Bean
    public A a() {
        A a = new A();
        a.setB(b());
        return a;
    }

    @Bean
    public B b() {
        B b = new B();
        b.setA(a());
        return b;
    }
}

Moreover, use the configuration class field of @ Autowired:

@Configuration
public class Config {
    @Autowired
    A a;
    @Autowired
    B b;

    @Bean
    public A a() {
        A a = new A();
        a.setB(b);
        return a;
    }

    @Bean
    public B b() {
        B b = new B();
        b.setA(a);
        return b;
    }
}

In addition, I have tried all the above with @ lazy annotation No help, but if I annotate the setters of a and B with @ Autowired, the effect will be very good But that's not what I want now What did I do wrong? Is there a way to solve the circular dependency without using @ Autowired in Java configuration?

Solution

The behavior you want is as follows

A a = new A();
B b = new B();
a.setB(b);
b.setA(a);

@Bean method doesn't give you They run complete to provide a bean instance

You basically have to partially create an instance and then complete initialization when you create another instance

@Configuration
class Config {
    @Bean
    public A a() {
        A a = new A();
        return a;
    }

    @Bean
    public B b() {
        B b = new B();
        A a = a();
        b.setA(a);
        a.setB(b);
        return b;
    }
}

or

@Bean
public B b(A a) {
    B b = new B();
    b.setA(a);
    a.setB(b);
    return b;
}