SpringBoot反射的基本应用全解析

Class<?> clazz = Class.forName("com.example.MyService");
Object instance = clazz.getDeclaredConstructor().newInstance();

RestController annotation = clazz.getAnnotation(RestController.class);
if (annotation != null) {
    // 处理控制器逻辑
}

Method method = ReflectionUtils.findMethod(MyClass.class, "myMethod", String.class);
ReflectionUtils.invokeMethod(method, targetObject, "arg");

Field field = ReflectionUtils.findField(MyClass.class, "privateField");
field.setAccessible(true);
Object value = field.get(targetObject);

InvocationHandler handler = (proxy, method, args) -> {
    System.out.println("Before method: " + method.getName());
    return method.invoke(target, args);
};
MyInterface proxy = (MyInterface) Proxy.newProxyInstance(
    MyInterface.class.getClassLoader(),
    new Class[]{MyInterface.class},
    handler
);

@Conditional(MyCondition.class)
@Bean
public MyBean myBean() {
    return new MyBean();
}

public class MyCondition implements Condition {
    @Override
    public boolean matches(ConditionContext context, AnnotatedTypeMetadata metadata) {
        return ClassUtils.isPresent("com.example.RequiredClass", context.getClassLoader());
    }
}