上传代码分享commons-fileupload

public class AttachServlet extends HttpServlet{

    
     /**
     * 
     */
    private static final long serialVersionUID = 14567895678L;
    
    public static void main(String args[])
    {
        
        
        Date date =new Date();
        SimpleDateFormat sdf =new SimpleDateFormat("yyyyMMddHHmm");//完整的时间
        String time=sdf.format(date);
        System.out.println(time);
    }

    public void doPost(HttpServletRequest request, HttpServletResponse response)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
     throws IOException, ServletException {  
        
    String resultStr = "";    
    String result = "";
    String type  =  request.getParameter("type");
    String name  =  request.getParameter("name");
    String upbyname  =  request.getParameter("upbyname");
    String upbyid  =  request.getParameter("upbyid");
    String mark  =  request.getParameter("mark");
    
    Date date =new Date();
    SimpleDateFormat sdf1 =new SimpleDateFormat("yyyyMMddHHmmss");//完整的时间
    SimpleDateFormat sdf2 =new SimpleDateFormat("yyyy-MM-dd HH:mm");//完整的时间
    String time1=sdf1.format(date);
    String time2=sdf2.format(date);
    String uptime = time2;
    AttachmentModel attachmentModel = new AttachmentModel();
    attachmentModel.setType(type);
    attachmentModel.setName(name);
    attachmentModel.setUpbyid(upbyid);
    attachmentModel.setUpbyname(upbyname);
    attachmentModel.setMark(mark);
    attachmentModel.setUptime(uptime);
     try {                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           
         //文件读写工厂                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
         DiskFileItemFactory factory = new DiskFileItemFactory();                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
         // 文件分析工具。上传的file必须有name否则无法识别                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
         ServletFileUpload upload = new ServletFileUpload(factory);                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
                  
         List<FileItem> items = upload.parseRequest(request);// 得到所有的文件     
         //遍历文件
         Iterator<FileItem> i = items.iterator();                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
         while (i.hasNext()) {                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
             FileItem fi = (FileItem) i.next();                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
             String upFileName = fi.getName();   
             
             if (upFileName != null && !upFileName.equals("")) {    
                 File fullFile = new File(fi.getName());
                 //realName 为当前的系统时间 + 文件名称。 
                 String finalName =  time1 + fullFile.getName();
                 //获取附件上传的路径（security.properties文件中，一般的配置型的都放在里面）
                 String uploadPath = PropertiesUtils.getProperty("attachment.path");
                 File file = new File(uploadPath);
                 if(!file.exists())
                 {
                     file.mkdirs();
                 }
                 File savedFile = new File(uploadPath, finalName);                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          
                 fi.write(savedFile);
                 
                 attachmentModel.setRealname(finalName);
                 AttachServiceImpl attachService = new AttachServiceImpl();
                 resultStr = attachService.insertAttach(attachmentModel);
             }                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
         }  
        
         response.setContentType("text/html;charset=utf-8"); 
         String uri = request.getContextPath().toString() ;
         //增加插入操作的返回值
         if(resultStr.equals(""))
         {
             request.setCharacterEncoding("UTF-8");
             result = "请正确的上传附件,您上传的附件为空！";
             uri = uri  + "/creditease/attach/attachment/attachInsertFail.jsp?result="+java.net.URLEncoder.encode(result, "UTF-8"); 
         }else
         {
             if(resultStr.equals("success"))
             {
                 result ="上传成功！！";
                 uri = uri  + "/creditease/attach/attachment/attachInsertSuccess.jsp";
             }else
             {
                 request.setCharacterEncoding("UTF-8");
                 result = resultStr;
                 uri = uri  + "/creditease/attach/attachment/attachInsertFail.jsp?result="+java.net.URLEncoder.encode(result, "UTF-8"); 
             }
         }
         response.sendRedirect( uri);
     } catch (Exception e) {                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
         // 可以跳转出错页面                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
         e.printStackTrace();                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
     }                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
    }   
    
    
    public void doGet(HttpServletRequest request, HttpServletResponse response)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
    throws IOException, ServletException {   
        this.doPost(request, response);
    }
}