<%@ page language="java" pageEncoding="utf-8"%> <%@ page import="java.util.*"%> <%@ page import="java.io.*"%> <%@ page import="javax.servlet.ServletContext"%> <%@ page import="javax.servlet.http.HttpServletRequest"%> <% //仅做示例用，请自行修改 String path = "upload"; String imgStr =""; String realpath = getRealPath(request,path)+"/"+path; List files = getFiles(realpath,new ArrayList()); for(File file :files ){ imgStr+=file.getPath().replace(getRealPath(request,path),"")+"ue_separate_ue"; } if(imgStr!=""){ imgStr = imgStr.substring(0,imgStr.lastIndexOf("ue_separate_ue")).replace(File.separator, "/").trim(); } out.print(imgStr); %> <%! public List getFiles(String realpath, List files) { File realFile = new File(realpath); if (realFile.isDirectory()) { File[] subfiles = realFile.listFiles(); for(File file :subfiles ){ if(file.isDirectory()){ getFiles(file.getAbsolutePath(),files); }else{ if(!getFileType(file.getName()).equals("")) { files.add(file); } } } } return files; } public String getRealPath(HttpServletRequest request,String path){ ServletContext application = request.getSession().getServletContext(); String str = application.getRealPath(request.getServletPath()); return new File(str).getParent(); } public String getFileType(String fileName){ String[] fileType = {".gif" , ".png" , ".jpg" , ".jpeg" , ".bmp"}; Iterator type = Arrays.asList(fileType).iterator(); while(type.hasNext()){ String t = type.next(); if(fileName.toLowerCase().endsWith(t)){ return t; } } return ""; } %>