//供参考
import java.util.regex.Pattern;
import java.util.regex.Matcher;
import java.util.List;
import java.util.ArrayList;

import java.io.File;

class Test
{

    public static void main(String[] args)
    {
        //取名称
        String str = "vvMall/mallStoreImg/122/htmlImg/7ca76e82-0270-48f8-bd79-87bf1cb1486c.jpg /><img /vvMall/mallStoreImg/122/htmlImg/81f2335e-eb5d-4a52-9a17-de04007495e6.jpg/>看看啦啦的萨<span style=background-color: rgb(255, 255, 102);>芬阿萨德安抚</span><br />";
        String regex = "[\\w,-]+\\.jpg";
        
        Pattern p = Pattern.compile(regex);
        Matcher m = p.matcher(str);
        List<String> list = new ArrayList<String>();
        while(m.find())
        {
            list.add(m.group());
        }
        System.out.println(list);
        
        //取文件
        File file = new File("d:\\1\\");
        File[] files = file.listFiles();
        for(File f :files)
        {
            if(f.isFile())
                list.add(f.toString());
        }
        System.out.println(list);
    }

}

------解决方案--------------------
 String regex = "[^/]+\\.jpg";


------解决方案--------------------
Java code

package com.dai.csdn;

import java.io.File;
import java.util.ArrayList;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class PatternTest1 {
    public static void main(String[] args) {
        String str = "<img src=\"/vvMall/mallStoreImg/122/htmlImg/7ca76e82-0270-48f8-bd79-87bf1cb1486c.jpg\" alt=\"\" /><img src=\"/vvMall/mallStoreImg/122/htmlImg/81f2335e-eb5d-4a52-9a17-de04007495e6.jpg\" alt=\"\" />看看啦啦的萨<span style=\"background-color: rgb(255, 255, 102);\">芬阿萨德安抚</span><br />";
        Pattern p = Pattern.compile("[\\w,-]+\\.jpg");
        Matcher m = p.matcher(str);
        List<String> l = new ArrayList<String>();
        while(m.find()) {
            l.add(m.group());
        }
        for (int i = 0; i < l.size(); i++) {
            System.out.println(l.get(i));
        }
        
        File file = new File("D://pro");//文件夹路径
        List<String> names = new ArrayList<String>();
        myListFiles(file, names);
        for (int i = 0; i < names.size(); i++) {
            System.out.println(names.get(i));
        }
    
    }
    
    private static void myListFiles(File file, List<String> names) {
        if (file.isDirectory()) {
            File[] files = file.listFiles();
            for (int i = 0; i < files.length; i++) {
                myListFiles(files[i],names);
            } 
            
        } else {
            names.add(file.getName());
        }
    }
}