Java:如何灵活地为200个字段创建一个数据映射实用程序，以避免再次重复相同的检查？

import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;

@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.FIELD)
public @interface DataMapping {
    String value() default "";
}

public class DataObject {
    @DataMapping("field1")
    private String field1;

    @DataMapping("field2")
    private int field2;

    // 其他字段...
}

import java.lang.reflect.Field;
import java.util.HashMap;
import java.util.Map;

public class DataMapper {
    public static Map<String, Object> mapData(Object obj) {
        Map<String, Object> dataMap = new HashMap<>();
        Class<?> clazz = obj.getClass();
        Field[] fields = clazz.getDeclaredFields();
        for (Field field : fields) {
            if (field.isAnnotationPresent(DataMapping.class)) {
                DataMapping annotation = field.getAnnotation(DataMapping.class);
                String fieldName = annotation.value();
                if (fieldName.isEmpty()) {
                    fieldName = field.getName();
                }
                field.setAccessible(true);
                try {
                    Object value = field.get(obj);
                    dataMap.put(fieldName, value);
                } catch (IllegalAccessException e) {
                    e.printStackTrace();
                }
            }
        }
        return dataMap;
    }
}

public class Main {
    public static void main(String[] args) {
        DataObject dataObject = new DataObject();
        // 设置字段的值...

        Map<String, Object> dataMap = DataMapper.mapData(dataObject);
        System.out.println(dataMap);
    }
}