为什么使用@Lazy注解创建的类的bean与相同类的正常Autowired对象相比具有不同的引用。我知道@Lazy在需要时提供bean示例，但我认为它总是相同的引用。
我写了下面的测试来证明这一点。
简单的柜台服务：

@Service
public class CounterService {

  private final AtomicInteger counter = new AtomicInteger();

  public void inc() {
    counter.incrementAndGet();
  }

  public int getCounter() {
    return counter.get();
  }

}

不使用Lazy的测试：

public class CounterServiceTest extends BaseITTest {

  @Autowired
  private CounterService counterService;
  @Autowired
  private ApplicationContext context;

  @Test
  void testBeansReference() {
    CounterService contextCounterService = context.getBean(CounterService.class);

    counterService.inc();
    contextCounterService.inc();

    System.out.println(counterService.getCounter() + " / " + contextCounterService.getCounter());
    System.out.println("counterService --> obj: " + counterService + ", hashCode: " + counterService.hashCode());
    System.out.println("contextCounterService --> obj: " + contextCounterService + ", hashCode: " + contextCounterService.hashCode());
    System.out.println("== Check: " + (counterService == contextCounterService));
    System.out.println(".equals() Check: " + (counterService.equals(contextCounterService)));
  }
  
}

输出：

2 / 2
counterService --> obj: com.flock.appointment.service.CounterService@750c23a3, hashCode: 1963729827
contextCounterService --> obj: com.flock.appointment.service.CounterService@750c23a3, hashCode: 1963729827
== Check: true
.equals() Check: true

不使用Lazy的测试：

public class CounterServiceLazyTest extends BaseITTest {

  @Lazy
  @Autowired
  private CounterService counterService;
  @Autowired
  private ApplicationContext context;

  @Test
  void testBeansReference() {
    CounterService contextCounterService = context.getBean(CounterService.class);

    counterService.inc();
    contextCounterService.inc();

    System.out.println(counterService.getCounter() + " / " + contextCounterService.getCounter());
    System.out.println("counterService --> obj: " + counterService + ", hashCode: " + counterService.hashCode());
    System.out.println("contextCounterService --> obj: " + contextCounterService + ", hashCode: " + contextCounterService.hashCode());
    System.out.println("== Check: " + (counterService == contextCounterService));
    System.out.println(".equals() Check: " + (counterService.equals(contextCounterService)));
  }

}

输出：

2 / 2
counterService --> obj: com.flock.appointment.service.CounterService@259c6ab8, hashCode: -1833445830
contextCounterService --> obj: com.flock.appointment.service.CounterService@259c6ab8, hashCode: 631007928
== Check: false
.equals() Check: false

• 请注意，第二个测试（使用lazy）的输出是2，这证明即使引用不同，类仍然是单例的，这是预期的，因为其他情况下的输出不会是2/2。
• 我也不确定为什么在第二个测试中，即使hashCode不同，并且==检查也显示false，但object.toString（）仍会产生相同的输出。toString（）末尾的数字不是hashCode的十六进制数吗？由于打印的hashCode不同，因此十六进制数应该不同？
• 我在调试器的测试2中观察到了counterService的示例，该示例通过CGLIB得到了增强，我读到了CGLIB，这让我认为大多数事情都是由于它，但我不太理解这一切是如何发生的，我还想详细了解Spring内部是如何做到这一点的。