将一个对象的属性赋给另一个对象 通过一个mapping进行属性映射 mapping 为 src:dest 的属性名称

 dest 目标对象

 src 源对象

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

public class Main {
    public static void copyProperties(Object src, Object dest, Map<String, String> mapping)
            throws NoSuchFieldException, IllegalAccessException {
        for (Map.Entry<String, String> entry : mapping.entrySet()) {
            String k = entry.getKey();
            String v = entry.getValue();

            if (src instanceof Map) {
                Object value = ((Map<?, ?>) src).get(k);
                dest.getClass().getMethod("setProperty", String.class, Object.class)
                        .invoke(dest, v, value);
            } else {
                Class<?> cls = src.getClass();
                Field field = cls.getDeclaredField(k);
                field.setAccessible(true);
                Object value = field.get(src);

                dest.getClass().getMethod("setProperty", String.class, Object.class)
                        .invoke(dest, v, value);
            }
        }
    }

    public static void main(String[] args) throws NoSuchFieldException, IllegalAccessException {
        // 使用示例
        // 定义src对象和dest对象
        Object src = new Object();
        Object dest = new Object();

        // 定义mapping映射关系
        Map<String, String> mapping = Map.of("propertyName1", "destPropertyName1",
                "propertyName2", "destPropertyName2");

        // 调用copyProperties方法进行属性复制
        copyProperties(src, dest, mapping);
    }
}