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<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
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<%@ page import="java.util.*,java.io.*" %>
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<%@ page import="java.text.SimpleDateFormat" %>
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<%@ page import="org.apache.commons.fileupload.*" %>
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<%@ page import="org.apache.commons.fileupload.disk.*" %>
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<%@ page import="org.apache.commons.fileupload.servlet.*" %>
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<%@ page import="org.json.simple.*" %>
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<%
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/**
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* KindEditor JSP
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*
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* 本JSP程序是演示程序，建议不要直接在实际项目中使用。
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* 如果您确定直接使用本程序，使用之前请仔细确认相关安全设置。
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*
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*/
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//文件保存目录路径
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String savePath = pageContext.getServletContext().getRealPath("/") + "attached/";
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//文件保存目录URL
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String saveUrl = request.getContextPath() + "/attached/";
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//定义允许上传的文件扩展名
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HashMap<String, String> extMap = new HashMap<String, String>();
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extMap.put("image", "gif,jpg,jpeg,png,bmp");
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extMap.put("flash", "swf,flv");
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extMap.put("media", "swf,flv,mp3,wav,wma,wmv,mid,avi,mpg,asf,rm,rmvb");
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extMap.put("file", "doc,docx,xls,xlsx,ppt,htm,html,txt,zip,rar,gz,bz2");
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//最大文件大小
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long maxSize = 1000000;
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response.setContentType("text/html; charset=UTF-8");
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if(!ServletFileUpload.isMultipartContent(request)){
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out.println(getError("请选择文件。"));
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return;
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}
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//检查目录
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File uploadDir = new File(savePath);
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if(!uploadDir.isDirectory()){
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out.println(getError("上传目录不存在。"));
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return;
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}
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//检查目录写权限
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if(!uploadDir.canWrite()){
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out.println(getError("上传目录没有写权限。"));
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return;
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}
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String dirName = request.getParameter("dir");
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if (dirName == null) {
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dirName = "image";
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}
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if(!extMap.containsKey(dirName)){
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out.println(getError("目录名不正确。"));
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return;
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}
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//创建文件夹
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savePath += dirName + "/";
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saveUrl += dirName + "/";
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File saveDirFile = new File(savePath);
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if (!saveDirFile.exists()) {
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saveDirFile.mkdirs();
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}
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SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMdd");
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String ymd = sdf.format(new Date());
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savePath += ymd + "/";
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saveUrl += ymd + "/";
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File dirFile = new File(savePath);
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if (!dirFile.exists()) {
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dirFile.mkdirs();
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}
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FileItemFactory factory = new DiskFileItemFactory();
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ServletFileUpload upload = new ServletFileUpload(factory);
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upload.setHeaderEncoding("UTF-8");
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List items = upload.parseRequest(request);
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Iterator itr = items.iterator();
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while (itr.hasNext()) {
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FileItem item = (FileItem) itr.next();
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String fileName = item.getName();
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long fileSize = item.getSize();
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if (!item.isFormField()) {
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//检查文件大小
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if(item.getSize() > maxSize){
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out.println(getError("上传文件大小超过限制。"));
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return;
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}
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//检查扩展名
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String fileExt = fileName.substring(fileName.lastIndexOf(".") + 1).toLowerCase();
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if(!Arrays.<String>asList(extMap.get(dirName).split(",")).contains(fileExt)){
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out.println(getError("上传文件扩展名是不允许的扩展名。\n只允许" + extMap.get(dirName) + "格式。"));
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return;
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}
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SimpleDateFormat df = new SimpleDateFormat("yyyyMMddHHmmss");
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String newFileName = df.format(new Date()) + "_" + new Random().nextInt(1000) + "." + fileExt;
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try{
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File uploadedFile = new File(savePath, newFileName);
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item.write(uploadedFile);
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}catch(Exception e){
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out.println(getError("上传文件失败。"));
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return;
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}
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JSONObject obj = new JSONObject();
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obj.put("error", 0);
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obj.put("url", saveUrl + newFileName);
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out.println(obj.toJSONString());
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}
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}
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%>
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<%!
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private String getError(String message) {
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JSONObject obj = new JSONObject();
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obj.put("error", 1);
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obj.put("message", message);
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return obj.toJSONString();
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}
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%> |
