如何将List<Map<String，Object>>转换为Map<String，String>？

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

public class ListMapToStringMap {
    public static void main(String[] args) {
        List<Map<String, Object>> list = new ArrayList<>();

        // 假设list中有两个Map对象
        Map<String, Object> map1 = new HashMap<>();
        map1.put("key1", "value1");
        map1.put("key2", "value2");
        list.add(map1);

        Map<String, Object> map2 = new HashMap<>();
        map2.put("key3", "value3");
        map2.put("key4", "value4");
        list.add(map2);

        Map<String, String> resultMap = new HashMap<>();

        // 遍历List中的每个Map对象
        for (Map<String, Object> map : list) {
            // 遍历Map中的每个键值对
            for (Map.Entry<String, Object> entry : map.entrySet()) {
                String key = entry.getKey();
                Object value = entry.getValue();

                // 将键值对转换为String类型，并存储到新的Map中
                resultMap.put(key, String.valueOf(value));
            }
        }

        // 输出转换后的Map<String, String>
        for (Map.Entry<String, String> entry : resultMap.entrySet()) {
            System.out.println(entry.getKey() + " : " + entry.getValue());
        }
    }
}