如何使用Core Java将键值对的映射注入到对象中？

public class Person {
    @Inject(key = "name")
    private String name;
    
    @Inject(key = "age")
    private int age;

    // 其他成员变量和方法
}

public class Injector {
    public static void inject(Object obj, Map<String, Object> keyValueMap) {
        Class<?> clazz = obj.getClass();
        Field[] fields = clazz.getDeclaredFields();
        
        for (Field field : fields) {
            if (field.isAnnotationPresent(Inject.class)) {
                Inject annotation = field.getAnnotation(Inject.class);
                String key = annotation.key();
                
                if (keyValueMap.containsKey(key)) {
                    try {
                        field.setAccessible(true);
                        field.set(obj, keyValueMap.get(key));
                    } catch (IllegalAccessException e) {
                        e.printStackTrace();
                    }
                }
            }
        }
    }
}

public static void main(String[] args) {
    Map<String, Object> keyValueMap = new HashMap<>();
    keyValueMap.put("name", "John");
    keyValueMap.put("age", 25);
    
    Person person = new Person();
    Injector.inject(person, keyValueMap);
    
    // 打印注入后的结果
    System.out.println(person.getName()); // 输出：John
    System.out.println(person.getAge()); // 输出：25
}