jsp中利用servlet實現圖片上傳

代碼如下

複製代碼

首先，頁面中即JSP中需要如下的組件： <h2 class="h2">       上傳照片:      </h2>      <form action="pic.do" method="post"       enctype="multipart/form-data">       <input type="file" name="file1" />       <input type="submit" value=" 上傳" />      </form> 而後在servlet中可以通過如下代碼來完成檔案的上傳操作： if(path.equals("/pic")){    //獲得登入使用者的id，用於建立新的檔案夾，存放該使用者上傳的檔案s     HttpSession session = request.getSession();     User user=(User)session.getAttribute("user");     long id=user.getId();         DiskFileItemFactory factory = new DiskFileItemFactory();     ServletFileUpload sfu = new ServletFileUpload(factory);     try {      List<FileItem> items = sfu.parseRequest(request);      for(int i =0;i<items.size();i++){       FileItem item =items.get(i);       if(item.isFormField()){        String name = item.getString();        System.out.println("name"+name);       }       else{        ServletContext context  = getServletContext();        path  =context.getRealPath("upload");        File file = new File(path+"\pic_"+id);        file.mkdir();               String fileName1 = item.getName();        String fileName = fileName1.substring(fileName1.lastIndexOf("\")+1);        file = new File(path+"\"+"pic_"+id+"\"+fileName);               item.write(file);       }      }     } catch (Exception e) {      // TODO Auto-generated catch block      e.printStackTrace();     }        }