<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>

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;@Controllerpublic class KindEditorController {    private static final ObjectMapper objectMapper = new ObjectMapper();    @RequestMapping(value = "http://www.mamicode.com/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 = "http://www.mamicode.com/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"));            }        }    }}