在java 1.8中将Map<String、List<Object>>转换为Map<String、List<String>>

import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

public class MapConversionExample {
    public static void main(String[] args) {
        // 原始的Map<String, List<Object>>
        Map<String, List<Object>> originalMap = createOriginalMap();

        // 将Map<String, List<Object>>转换为Map<String, List<String>>
        Map<String, List<String>> convertedMap = originalMap.entrySet().stream()
                .collect(Collectors.toMap(Map.Entry::getKey, entry -> convertListToStringList(entry.getValue())));

        // 打印转换后的Map<String, List<String>>
        convertedMap.forEach((key, value) -> System.out.println(key + ": " + value));
    }

    private static List<String> convertListToStringList(List<Object> list) {
        return list.stream()
                .map(Object::toString)
                .collect(Collectors.toList());
    }

    private static Map<String, List<Object>> createOriginalMap() {
        // 创建一个原始的Map<String, List<Object>>
        Map<String, List<Object>> originalMap = new HashMap<>();
        List<Object> list1 = Arrays.asList("value1", "value2", "value3");
        List<Object> list2 = Arrays.asList("value4", "value5");
        originalMap.put("key1", list1);
        originalMap.put("key2", list2);
        return originalMap;
    }
}