@RequestMapping(value=http://www.mamicode.com/{"/uploadFile"},method={RequestMethod.POST})     public String upload(@RequestParam(value = "http://www.mamicode.com/file", required = false) MultipartFile file, @RequestParam Integer groupId,HttpServletRequest request) {          String result="";                try{                     POIFSFileSystem fs;      //上传的文件为excel               HSSFWorkbook book;            fs = new POIFSFileSystem(file.getInputStream());              book = new HSSFWorkbook(fs);                   //  获得第一个工作表对象            HSSFSheet sheet = book.getSheetAt(0);                    //插入数据的代码           String sql;           sql="insert into question (test,question_option,answer,question_group)values(?,?,?,?)";                     List<HashMap<String,Object>> data=http://www.mamicode.com/new ArrayList<HashMap<String,Object>>();           HashMap<String,Object> one=null;           // 得到总行数                   int rowNum = sheet.getLastRowNum();                  HSSFRow row = sheet.getRow(0);                   // 正文内容应该从第二行开始,第一行为表头的标题                for (int i = 1; i <= rowNum; i++) {                          row = sheet.getRow(i);                 HSSFCell cell=row.getCell((short)0);   //题目               HSSFCell cell2=row.getCell((short)1);   //答案               HSSFCell cell3=row.getCell((short)2);   //选项            if(cell==null||cell2==null||cell3==null){                   result="1";                                   }else{                   one=new HashMap<String,Object>();                   one.put("title", cell.getStringCellValue());                   one.put("answer", cell2.getStringCellValue());                   one.put("option", cell3.getStringCellValue());                   one.put("group", groupId);                   data.add(one);               }              }         if(this.springDBAction.insertBatch(sql, data, new Object[]{"title","option","answer","group"})>0){   //批量插入             result="2";         }else{             result="1";         }         }catch (Exception e){           e.printStackTrace();           result="1";        }       request.setAttribute("result", result);       request.setAttribute("groupId", groupId);        return "/questionManager/questionList";      }

注意：
其中multipartFile 类它有一个方法可以将该对象指定的文件复制到另一个文件中：file.transferTo(File file).这样可以将上传的文件复制到别的目录下的文件中。

 <div id="upload" class="upload" style="display:none;">    <div><img src="http://www.mamicode.com//images/close.png" style="border:0;cursor:pointer;"></div>   <form name="uploadFile" method="post" action="<%=path%>/question/uploadFile" enctype="multipart/form-data">   <ul class="forminfo uploadUl">     <li>        <label>选择文件:</label>        <input type="file" name="file" id="file"></li>     <li><input type="hidden" name="groupId"></li>     <li><center><input type="button" value="http://www.mamicode.com/提交" onclick="checkSubmit();" class="addbtn" style="float:none;"></center></li>   </ul>   </form> </div> 

 var checkSubmit=function(){      if(document.getElementById("file").value!=undefined&&document.getElementById("file").value!=""){        document.forms[0].submit();      }else{        alert("请选择文件");      }          };

    @RequestMapping("/download")    public String download(HttpServletRequest request,HttpServletResponse response)throws Exception{        response.setContentType("text/html;charset=utf-8");    //设置回应流的头文件        request.setCharacterEncoding("UTF-8");                int paperId=Integer.valueOf(request.getParameter("paperId"));        int groupId=Integer.valueOf(request.getParameter("groupId"));                BufferedInputStream bis= null;        BufferedOutputStream bos=null;        String ctxPath =request.getSession().getServletContext().getRealPath("/")+"\\"+"exam\\";   //获得根目录下的exam文件夹地址        if(!new File(ctxPath).exists()){            new File(ctxPath).mkdirs();        }                String sql="select top(1) exam_name as name,question_ids as questionIds from paper where id=?";        List<HashMap<String,Object>> data=http://www.mamicode.com/this.springDBAction.query(sql,new Object[]{paperId});        if(data.size()!=0){     //根据数据构成html字符串            String fileName=data.get(0).get("name").toString();            String content="<html><div style=\"width: 96%;padding:10px;font-family: \‘微软雅黑\‘;\"><div>"                          +"<center><h3 style=\"margin: 0;\">"+fileName+"</h3></center></div><hr style=\"height:1px;color:#000000;\"/><div >"                          +"<ul style=\"display: block;margin: 0;list-style: none;font-size:15pt;border: 0;\">";            String answers="<html><div><ul style=\"display: block;margin: 0;list-style: none;font-size:15pt;border: 0;\">";                        String[] questionStr=data.get(0).get("questionIds").toString().split(",");            sql="select test as title, answer as answer,question_option as questionOption from question where id in(";                        for(int i=0;i<questionStr.length;i++){                sql+=Integer.valueOf(questionStr[i])+",";            }            sql=sql.substring(0,sql.lastIndexOf(","));            sql+=")";            data=this.springDBAction.query(sql, new Object[0]);            HashMap<String,Object> one;            for(int i=0;i<data.size();i++){                one=data.get(i);                content+="<li style=\"margin-bottom: 13px;clear: both;display: block;margin: 0;padding: 0;list-style: none;\"><label style=\"font-size:15pt;\">"+(i+1)+".  "+one.get("title")+"</label>"                    +"<ul style=\"display: block;margin: 0;list-style: none;font-size: 10pt;border: 0;padding: 10 0 10 30;\">";                answers+="<li style=\"margin-bottom: 13px;clear: both;display: block;margin: 0;padding: 0;list-style: none;\"><label style=\"font-size:15pt;\">"+(i+1)+".  "+one.get("answer")+"</label>"                +"</li>";                                String[] strs=one.get("questionOption").toString().split(";");                for(String str:strs){                    if(str.trim().startsWith("A.")){                        content+="<li style=\"margin-bottom: 13px;clear: both; display:inline;padding-right:70px;list-style: none;margin:0;\"><label style=\"font-size:13px;\">A.</label>"                                +"<label style=\"font-size:13pt;\">"+str.trim().substring(2)+"</label></li>";                    }                }                for(String str:strs){                    if(str.trim().startsWith("B.")){                        content+="<li style=\"margin-bottom: 13px;clear: both; display:inline;padding-right:70px;list-style: none;margin:0;\"><label style=\"font-size:13px;\">B.</label>"                                +"<label style=\"font-size:13pt;\">"+str.trim().substring(2)+"</label></li>";                    }                }                for(String str:strs){                    if(str.trim().startsWith("C.")){                        content+="<li style=\"margin-bottom: 13px;clear: both; display:inline;padding-right:70px;list-style: none;margin:0;\"><label style=\"font-size:13px;\">C.</label>"                                +"<label style=\"font-size:13pt;\">"+str.trim().substring(2)+"</label></li>";                    }                }                for(String str:strs){                    if(str.trim().startsWith("D.")){                        content+="<li style=\"margin-bottom: 13px;clear: both; display:inline;padding-right:70px;list-style: none;margin:0;\"><label style=\"font-size:13px;\">D.</label>"                                +"<label style=\"font-size:13pt;\">"+str.trim().substring(2)+"</label></li>";                    }                }                content+="</ul></li>";            }            content+="</ul></div></div></html>";            answers+="</ul></div></html>";                        String downLoadPath=ctxPath+fileName+".doc";            String answerPath=ctxPath+fileName+"_答案.doc";                        ByteArrayInputStream bais = new ByteArrayInputStream(content.getBytes());    //生成第一个word文档            POIFSFileSystem poifs = new POIFSFileSystem();              DirectoryEntry directory = poifs.getRoot();              DocumentEntry documentEntry = directory.createDocument("WordDocument", bais);              FileOutputStream ostream = new FileOutputStream(downLoadPath);              poifs.writeFilesystem(ostream);              bais.close();              ostream.close();                          bais = new ByteArrayInputStream(answers.getBytes());     //生成第二个word文档            poifs = new POIFSFileSystem();              directory = poifs.getRoot();              documentEntry = directory.createDocument("WordDocument", bais);              ostream = new FileOutputStream(answerPath);              poifs.writeFilesystem(ostream);              bais.close();              ostream.close();                         try{                long fileLength = new File (downLoadPath).length()+new File (answerPath).length();    //补充response的head                response.setContentType("application/octet-stream; charset=utf-8");   //表示可以下载任何类型的文件                response.setHeader("Content-disposition","attachment;filename="+new String((fileName+".zip").getBytes("utf-8"),"ISO8859-1"));               //防止中文乱码                response.setHeader("Content-Length",String.valueOf(fileLength));                                 ZipOutputStream zos = new ZipOutputStream(response.getOutputStream());       //构成zip流                 File[] subs = new File[2];                   subs[0]=new File(downLoadPath);                   subs[1]=new File(answerPath);                                           for (int i=0;i<subs.length;i++) {                         File f=subs[i];                         zos.putNextEntry(new ZipEntry(f.getName()));                            FileInputStream fis = new FileInputStream(f);                            byte[] buffer = new byte[1024];                            int r = 0;                            while ((r = fis.read(buffer)) != -1) {                                zos.write(buffer, 0, r);                            }                            fis.close();                   }                  zos.flush();                     zos.close(); 

//下载单个文件//                bis = new BufferedInputStream(new FileInputStream(downLoadPath));//                bos = new BufferedOutputStream(response.getOutputStream());//                byte[] buff = new byte[2048];//               int bytesRead;//               while (-1!=(bytesRead=bis.read(buff,0,buff.length))){//                 bos.write(buff,0,bytesRead);//                }            } catch(Exception e){                e.printStackTrace();              }finally{                if(bis!=null)                bis.close();                if (bos!=null)                 bos.close();             }              return null;        }else{            request.setAttribute("groupId", groupId);            return "/paperManager/paperList";        }        }