zd-parents-v2/zd-api/zd-api-system/src/main/java/com/zd/system/api/test.java

package com.zd.system.api;

import cn.hutool.core.util.NumberUtil;

import java.util.*;
import java.util.stream.Collectors;

public class test {
    public static void main(String[] args) {
        String[] urlStr = new String[5];
        urlStr[0] = "15-31-17.mp4";
        urlStr[1] = "15-31-29.mp4";
        urlStr[2] = "15-31-20.mp4";
        urlStr[3] = "15-31-30.mp4";
        urlStr[4] = "15-31-15.mp4";
        List<Map<String,Object>> collect = Arrays.asList(urlStr).stream()
                .map(a -> {
                    Map<String,Object> urlMap = new HashMap<String,Object>();
                    Integer value = Integer.parseInt(a.substring(0, a.lastIndexOf(".")).replaceAll("-", ""));
                    urlMap.put("key",value);
                    urlMap.put("value",a);
                    return urlMap;
                }).collect(Collectors.toList());
        Map<String,Object> arrMap = Optional.ofNullable(collect).orElseGet(Collections::emptyList)
                .stream()
                .sorted((c, d) -> NumberUtil.compare(Integer.parseInt(d.get("key").toString()),Integer.parseInt(c.get("key").toString())))
                .collect(Collectors.toList()).get(0);

        System.out.println(arrMap.get("value"));
    }
}