上传下载
Posted yanhuaqiang
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django web项目,前端上传控件用的是uploadify。
文件上传 - 后台view 的 Python代码如下:
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@csrf_exempt @require_http_methods ([ "POST" ]) def uploadFiles(request): try : user = request.session.get( ‘user‘ ) allFimeNames = "" #获取所有上传文件 files = request.FILES.getlist( "file" ) for file in files: # 获取文件名 解析文件后缀 获取新文件名 oldName = file .name filename = str ( int (time.time() * 10 )) + "." + oldName.split( "." )[ 1 ] now = datetime.now() filePath = os.path.join( "developmentTask" , str (user.get( "userId" )) + "-" + now.strftime( ‘%Y-%m-%d‘ )) dirpath = os.path.join(settings.UPLOADFILES_DIRS , filePath) #写入服务器 if not os.path.exists(dirpath): os.makedirs(dirpath) newFilePath = os.path.join(dirpath, filename) with open (newFilePath, ‘wb+‘ ) as destination: for chunk in file .chunks(): destination.write(chunk) #返回新文件名 多个用逗号隔开 allFimeNames = os.path.join(filePath,filename) except Exception: return JsonResponse(data = { ‘error‘ : "系统异常" }, status = 400 ) return JsonResponse(data = { ‘filePath‘ : allFimeNames}) |
request.FILES.getlist("file")此处的file 是前端页面的文件提交的名称,可以在uploadify中配置。
文件下载:
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@csrf_exempt @require_http_methods ([ "GET" ]) def downloadFile(request): filePath = request.GET.get( "filepath" ) fileName = request.GET.get( "filename" ) file_name = os.path.join(settings.UPLOADFILES_DIRS, filePath) if os.path.exists(file_name): def file_iterator(file_name, chunk_size = 512 ): with open (file_name) as f: while True : c = f.read(chunk_size) if c: yield c else : break response = StreamingHttpResponse(file_iterator(file_name)) response[ ‘Content-Type‘ ] = ‘application/octet-stream‘ response[ ‘Content-Disposition‘ ] = ‘attachment;filename="{0}"‘ . format (fileName) return response response = StreamingHttpResponse( "文件不存在!" ) response[ ‘Content-Type‘ ] = ‘application/octet-stream‘ response[ ‘Content-Disposition‘ ] = ‘attachment;filename="{0}"‘ . format ("") return response |
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