@Component
@Order(1)
public class TestA {
 @Autowired
 private TestB testB;
 private String name;
// get and set
 public String hello () {
 return "hello A" + this.getName();
 }
 public String otherName () {
 return testB.getName();
 }
}
@Component
@Order(1)
public class TestB {
 @Autowired
 private TestA testA;
 private String name;
// get and set
 public String hello () {
 return "hello B" + this.getName();
 }
 public String otherName () {
 return testA.getName();
 }
}

@Component
public class BugPostProcessor implements BeanPostProcessor {
 @Override
 public Object postProcessBeforeInitialization(Object bean, String beanName) throws BeansException {
 if (TestA.class.isAssignableFrom(bean.getClass())) {
 System.out.println("Modifying TestA bean before initialization");
 return new TestA(); // use another object to replace it
 }
 if (TestB.class.isAssignableFrom(bean.getClass())) {
 System.out.println("Modifying TestB bean before initialization");
 return new TestB(); // use another object to replace it
 }
 return bean; // return original bean
 }
}

@Aspect
@Component
public class AOPConfig {
 @Pointcut("execution(* com.voidvvv.issue.service.*.*(..))" )
 public void pointCut() {}
 @Before("pointCut()")
 public void before() {
 System.out.println("AOP before");
 }
}

@RestController
@Lazy
@RequestMapping("/test")
public class TestController {
 @Autowired
 private TestA testA;
 @Autowired
 private TestB testB;
 @GetMapping("/show")
 public String show() {
 StringBuilder sb = new StringBuilder();
 sb.append("show TestA: " + testA.hello() + "\t\n");
 sb.append(System.lineSeparator());
 sb.append("show TestB: " + testB.hello() + "\t");
 sb.append(System.lineSeparator());
 sb.append("show TestB in TestA: " + testA.otherName() + "\t");
 sb.append(System.lineSeparator());
 sb.append("show TestA in TestB: " + testB.otherName() + "\t");
 sb.append(System.lineSeparator());
 return sb.toString();
 }
}

spring.main.allow-circular-references=true