2016-09-20 66 views
2

文件管理器

我想上傳任何文件,我有一個文件管理器服務,獲取文件和保存沒有擴展名和文件名是UUID和返回文件信息。如何找到該文件是圖像或文檔或...沒有擴展名和內容類型?

我的文件管理器的處理程序:

#!/usr/bin/python 
# -*- coding: utf-8 -*- 

import json 
from pyramid_storage.exceptions import FileNotAllowed 
import uuid 
from pyramid.view import view_config 
from pyramid.response import Response 
import os 


class UploadHandler: 
    def __init__(self, request): 
     self.request = request 
     self.settings = self.request.registry.settings 

    @view_config(route_name='upload', request_method='POST', renderer='json') 
    def post(self): 
     # file 
     f = self.request.POST.items() 

     # file name 
     file_name_main = f[0][1].filename 

     # content type 
     content_type = str(f[0][1].type) 

     if content_type: 
      extension_main = content_type.split('.')[-1] 

      # set id for file name 
      if extension_main: 
       f[0][1].filename = str(uuid.uuid4()) 
      else: 
       response = Response(body=json.dumps({'ERROR': 'Your File Not Allowed'})) 
       response.headers.update({ 
        'Access-Control-Allow-Origin': self.settings['Access-Control-Allow-Origin'], 
       }) 
       return response 
     else: 
      response = Response(body=json.dumps({'ERROR': 'Your File Not Allowed'})) 
      response.headers.update({ 
       'Access-Control-Allow-Origin': self.settings['Access-Control-Allow-Origin'], 
      }) 
      return response 

     try: 
      # save file 
      file_name = str(self.request.storage.save(f[0][1])) 
     except FileNotAllowed:   
      response = Response(body=json.dumps({'ERROR': 'Your File Not Allowed'})) 
      response.headers.update({ 
       'Access-Control-Allow-Origin': self.settings['Access-Control-Allow-Origin'], 
      }) 
      return response 

     # file name == file id 
     f_name = file_name 
     file_path = self.request.storage.base_path + os.sep + f_name 
     file_size = os.path.getsize(file_path) 

     response = Response(body=json.dumps(
      {'file_id': f_name, 'file_name': file_name_main, 'content_type': content_type, 'size': file_size, 
      'extension': extension_main})) 

     response.headers.update({ 
      'Access-Control-Allow-Origin': self.settings['Access-Control-Allow-Origin'], 
     }) 
     return response 
+0

**例如:** 爲圖像I可以使用枕頭程序庫以檢測圖像: 從PIL進口Image' ' '嘗試:'' 與Image.open( 「m.jpg」)作爲im:' 'pass'' 'except exception,e:' 'print(「ERROR:FileNotAllowed」+ str(e))' – J4v4d

回答

1

有一個叫file UNIX工具,它使用「魔術」來識別已知文件類型。爲此,file使用稱爲libmagic的庫。

libmagic的Python界面被稱爲filemagic,你可以得到它here

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