最近做项目,需要用到文本编辑器,找了一下,决定使用 kindeditor,百度了一下kindeditor 文件上传的 controller的代码,copy下来发现了问题。
测试出来问题是:upload.parseRequest(request) 这一句取的值为空 ,再去百度一下,发现很多人都有这样的问题。主要原因就在于项目其他地方用到了spring mvc 配置好了的上传,配置文件里已经写了。所以
解决方案一是:删除
<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver"> <property name="defaultEncoding"> <value>UTF-8</value> </property> <property name="maxUploadSize"> <value>32505856</value> <!-- 上传文件大小限制为31M,31*1024*1024 --> </property> <property name="maxInMemorySize"> <value>4096</value> </property> </bean>
这个做法肯定能解决问题,但也会导致如果项目其他地方用到了 之前配置好的上传,那么就会出错。
百度了一会儿没找到解决方法后,决定自己把这个controller改写一下,就把循环部分改写成 multipartRequest那种,然后两种上传都可以使用。
解决方法二:
package whu.edu.irlab.modules.msgsys.controller; import java.io.File; import java.io.IOException; import java.text.SimpleDateFormat; import java.util.ArrayList; import java.util.Arrays; import java.util.Collections; import java.util.Comparator; import java.util.Date; import java.util.HashMap; import java.util.Hashtable; import java.util.Iterator; import java.util.List; import java.util.Map; import java.util.Random; import javax.servlet.ServletContext; import javax.servlet.ServletException; import javax.servlet.ServletOutputStream; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.apache.commons.fileupload.FileItem; import org.apache.commons.fileupload.FileItemFactory; import org.apache.commons.fileupload.FileUploadException; import org.apache.commons.fileupload.disk.DiskFileItemFactory; import org.apache.commons.fileupload.servlet.ServletFileUpload; import org.codehaus.jackson.map.ObjectMapper; import org.springframework.stereotype.Controller; import org.springframework.util.FileCopyUtils; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestMethod; import org.springframework.web.bind.annotation.ResponseBody; import org.springframework.web.multipart.MultipartFile; import org.springframework.web.multipart.MultipartHttpServletRequest; @Controller public class KindEditorController { private static final ObjectMapper objectMapper = new ObjectMapper(); @RequestMapping(value = "/kindeditor/file-upload.do", method = RequestMethod.POST) @ResponseBody public Map<String, Object> fileUpload(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException, FileUploadException { MultipartHttpServletRequest multipartRequest = (MultipartHttpServletRequest) request; Map<String, MultipartFile> fileMap = multipartRequest.getFileMap(); ServletContext application = request.getSession().getServletContext(); String savePath = application.getRealPath("/") + File.separator + "attached/"; // 文件保存目录URL String saveUrl = request.getContextPath() + "/attached/"; // 定义允许上传的文件扩展名 HashMap<String, String> extMap = new HashMap<String, String>(); extMap.put("image", "gif,jpg,jpeg,png,bmp"); extMap.put("flash", "swf,flv"); extMap.put("media", "swf,flv,mp3,wav,wma,wmv,mid,avi,mpg,asf,rm,rmvb"); extMap.put("file", "doc,docx,xls,xlsx,ppt,htm,html,txt,zip,rar,gz,bz2"); // 最大文件大小 long maxSize = 1000000; response.setContentType("text/html; charset=UTF-8"); if (!ServletFileUpload.isMultipartContent(request)) { return getError("请选择文件。"); } // 检查目录 File uploadDir = new File(savePath); if (!uploadDir.isDirectory()) { return getError("上传目录不存在。"); } // 检查目录写权限 if (!uploadDir.canWrite()) { return getError("上传目录没有写权限。"); } String dirName = request.getParameter("dir"); if (dirName == null) { dirName = "image"; } if (!extMap.containsKey(dirName)) { return getError("目录名不正确。"); } // 创建文件夹 savePath += dirName + "/"; saveUrl += dirName + "/"; File saveDirFile = new File(savePath); if (!saveDirFile.exists()) { saveDirFile.mkdirs(); } SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMdd"); String ymd = sdf.format(new Date()); savePath += ymd + "/"; saveUrl += ymd + "/"; File dirFile = new File(savePath); if (!dirFile.exists()) { dirFile.mkdirs(); } FileItemFactory factory = new DiskFileItemFactory(); ServletFileUpload upload = new ServletFileUpload(factory); upload.setHeaderEncoding("UTF-8"); System.out.println("无法进入循环"); for (Map.Entry<String, MultipartFile> entity : fileMap.entrySet()) { System.out.println("可以进入循环"); // 上传文件 MultipartFile mf = entity.getValue(); String fileName = fileName = mf.getOriginalFilename(); System.out.println("可以进入判断语句"); // 检查文件大小 if (mf.getSize() > maxSize) { return getError("上传文件大小超过限制。"); } // 检查扩展名 String fileExt = fileName.substring( fileName.lastIndexOf(".") + 1).toLowerCase(); if (!Arrays.<String>asList(extMap.get(dirName).split(",")) .contains(fileExt)) { return 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。"); } SimpleDateFormat df = new SimpleDateFormat("yyyyMMddHHmmss"); String newFileName = df.format(new Date()) + "_" + new Random().nextInt(1000) + "." + fileExt; try { File uploadedFile = new File(savePath, newFileName); System.out.println("写入时出错"); FileCopyUtils.copy(mf.getBytes(), uploadedFile); } catch (Exception e) { return getError("上传文件失败。"); } Map<String, Object> msg = new HashMap<String, Object>(); msg.put("error", 0); msg.put("url", saveUrl + newFileName); return msg; } return null; } private Map<String, Object> getError(String message) { Map<String, Object> msg = new HashMap<String, Object>(); msg.put("error", 1); msg.put("message", message); return msg; } @RequestMapping(value = "/kindeditor/file-manager.do", method = RequestMethod.GET) public void fileManager(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { ServletContext application = request.getSession().getServletContext(); ServletOutputStream out = response.getOutputStream(); // 根目录路径,可以指定绝对路径,比如 /var/www/attached/ String rootPath = application.getRealPath("/") + File.separator + "attached/"; // 根目录URL,可以指定绝对路径,比如 http://www.yoursite.com/attached/ String rootUrl = request.getContextPath() + "/attached/"; // 图片扩展名 String[] fileTypes = new String[]{"gif", "jpg", "jpeg", "png", "bmp"}; String dirName = request.getParameter("dir"); if (dirName != null) { if (!Arrays.<String>asList( new String[]{"image", "flash", "media", "file"}) .contains(dirName)) { out.println("Invalid Directory name."); return; } rootPath += dirName + "/"; rootUrl += dirName + "/"; File saveDirFile = new File(rootPath); if (!saveDirFile.exists()) { saveDirFile.mkdirs(); } } // 根据path参数,设置各路径和URL String path = request.getParameter("path") != null ? request .getParameter("path") : ""; String currentPath = rootPath + path; String currentUrl = rootUrl + path; String currentDirPath = path; String moveupDirPath = ""; if (!"".equals(path)) { String str = currentDirPath.substring(0, currentDirPath.length() - 1); moveupDirPath = str.lastIndexOf("/") >= 0 ? str.substring(0, str.lastIndexOf("/") + 1) : ""; } // 排序形式,name or size or type String order = request.getParameter("order") != null ? request .getParameter("order").toLowerCase() : "name"; // 不允许使用..移动到上一级目录 if (path.indexOf("..") >= 0) { out.println("Access is not allowed."); return; } // 最后一个字符不是/ if (!"".equals(path) && !path.endsWith("/")) { out.println("Parameter is not valid."); return; } // 目录不存在或不是目录 File currentPathFile = new File(currentPath); if (!currentPathFile.isDirectory()) { out.println("Directory does not exist."); return; } // 遍历目录取的文件信息 List<Hashtable> fileList = new ArrayList<Hashtable>(); if (currentPathFile.listFiles() != null) { for (File file : currentPathFile.listFiles()) { Hashtable<String, Object> hash = new Hashtable<String, Object>(); String fileName = file.getName(); if (file.isDirectory()) { hash.put("is_dir", true); hash.put("has_file", (file.listFiles() != null)); hash.put("filesize", 0L); hash.put("is_photo", false); hash.put("filetype", ""); } else if (file.isFile()) { String fileExt = fileName.substring( fileName.lastIndexOf(".") + 1).toLowerCase(); hash.put("is_dir", false); hash.put("has_file", false); hash.put("filesize", file.length()); hash.put("is_photo", Arrays.<String>asList(fileTypes) .contains(fileExt)); hash.put("filetype", fileExt); } hash.put("filename", fileName); hash.put("datetime", new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(file .lastModified())); fileList.add(hash); } } if ("size".equals(order)) { Collections.sort(fileList, new SizeComparator()); } else if ("type".equals(order)) { Collections.sort(fileList, new TypeComparator()); } else { Collections.sort(fileList, new NameComparator()); } Map<String, Object> msg = new HashMap<String, Object>(); msg.put("moveup_dir_path", moveupDirPath); msg.put("current_dir_path", currentDirPath); msg.put("current_url", currentUrl); msg.put("total_count", fileList.size()); msg.put("file_list", fileList); response.setContentType("application/json; charset=UTF-8"); String msgStr = objectMapper.writeValueAsString(msg); out.println(msgStr); } class NameComparator implements Comparator { public int compare(Object a, Object b) { Hashtable hashA = (Hashtable) a; Hashtable hashB = (Hashtable) b; if (((Boolean) hashA.get("is_dir")) && !((Boolean) hashB.get("is_dir"))) { return -1; } else if (!((Boolean) hashA.get("is_dir")) && ((Boolean) hashB.get("is_dir"))) { return 1; } else { return ((String) hashA.get("filename")) .compareTo((String) hashB.get("filename")); } } } class SizeComparator implements Comparator { public int compare(Object a, Object b) { Hashtable hashA = (Hashtable) a; Hashtable hashB = (Hashtable) b; if (((Boolean) hashA.get("is_dir")) && !((Boolean) hashB.get("is_dir"))) { return -1; } else if (!((Boolean) hashA.get("is_dir")) && ((Boolean) hashB.get("is_dir"))) { return 1; } else { if (((Long) hashA.get("filesize")) > ((Long) hashB .get("filesize"))) { return 1; } else if (((Long) hashA.get("filesize")) < ((Long) hashB .get("filesize"))) { return -1; } else { return 0; } } } } class TypeComparator implements Comparator { public int compare(Object a, Object b) { Hashtable hashA = (Hashtable) a; Hashtable hashB = (Hashtable) b; if (((Boolean) hashA.get("is_dir")) && !((Boolean) hashB.get("is_dir"))) { return -1; } else if (!((Boolean) hashA.get("is_dir")) && ((Boolean) hashB.get("is_dir"))) { return 1; } else { return ((String) hashA.get("filetype")) .compareTo((String) hashB.get("filetype")); } } } }
时间: 2024-09-29 23:31:23