Django實現(xiàn)文件上傳下載功能

更新時間：2019年10月06日 10:25:04 作者：羅漢爺

這篇文章主要為大家詳細(xì)介紹了Django實現(xiàn)文件上傳下載功能，文中示例代碼介紹的非常詳細(xì)，具有一定的參考價值，感興趣的小伙伴們可以參考一下

項目介紹

最近學(xué)習(xí)django，通過文件上傳下載這個小項目，總結(jié)下常用的知識點。
做這個案例我有以下需求：

1.要支持一次上傳多個文件

2.支持上傳后記錄上傳的數(shù)據(jù)以及列表展示

3.支持下載和刪除文件記錄

效果展示

數(shù)據(jù)庫記錄

開發(fā)步驟

創(chuàng)建項目：

django-admin startproject file_upload
cd file_upload
python manage.py startapp uploader

目錄結(jié)構(gòu):

0.settings.py

LANGUAGE_CODE = 'zh-Hans'
TIME_ZONE = 'Asia/Shanghai'
USE_I18N = True
USE_L10N = True
USE_TZ = False

1.urls.py

父：

from django.contrib import admin
from django.urls import path, include
 
urlpatterns = [
 path('admin/', admin.site.urls),
 path('uploader/', include('uploader.urls'))
]

子：

from django.contrib import admin
from django.urls import path, include
from . import views
 
app_name = 'uploader'
 
urlpatterns = [
 path('', views.upload, name='upload'), # 上傳
 path('list/', views.list), # 列表
 path('download/<id>', views.download, name='download'), # 下載
 path('delete/<id>', views.delete, name='delete'), # 刪除
]

2.models.py

from django.db import models
from django.utils import timezone
 
'''
文件記錄
'''
class FileInfo(models.Model):
 file_name = models.CharField(max_length=500)
 file_size = models.DecimalField(max_digits=10, decimal_places=0)
 file_path = models.CharField(max_length=500)
 upload_time = models.DateTimeField(default=timezone.now())

3.forms.py

from django import forms
 
'''
上傳表單
'''
class UploadForm(forms.Form):
 file = forms.FileField(
 widget=forms.ClearableFileInput(attrs={'multiple': True}), # 支持多文件上傳
 label='選擇文件...',
 help_text='最大100M'
 )

4.views.py

from django.shortcuts import render
from django.http import HttpResponseRedirect
from django.http import HttpResponseRedirect
from django.http import FileResponse
from django.template import RequestContext
from django.urls import reverse
from django.utils.http import urlquote
 
from .models import FileInfo
from .forms import UploadForm
import os
 
 
# 上傳文件
def upload(request):
 # Handle file upload
 if request.method == 'POST':
 form = UploadForm(request.POST, request.FILES)
 if form.is_valid():
  files = request.FILES.getlist('file')
  for f in files:
  file_info = FileInfo(file_name=f.name, file_size=1 if 0 < f.size < 1024 else f.size / 1024, file_path=os.path.join('D:\\upload', f.name))
  file_info.save()
  # 上傳
  destination = open(os.path.join("D:\\upload", f.name), 'wb+')
  for chunk in f.chunks():
   destination.write(chunk)
  destination.close()
 
  # 返回上傳頁
  return HttpResponseRedirect('/uploader/list')
 else:
 form = UploadForm() # A empty, unbound form
 return render(request, 'uploader/upload.html', {'form': form})
 
 
# 文件列表
def list(request):
 file_infos = FileInfo.objects.all()
 
 return render(request, 'uploader/list.html', {'file_infos': file_infos})
 
 
# 下載文件
def download(request, id):
 file_info = FileInfo.objects.get(id=id)
 print('下載的文件名：' + file_info.file_name)
 file = open(file_info.file_path, 'rb')
 response = FileResponse(file)
 response['Content-Disposition'] = 'attachment;filename="%s"' % urlquote(file_info.file_name)
 return response
 
 
# 刪除文件
def delete(request, id):
 file_info = FileInfo.objects.get(id=id)
 file_info.delete()
 file_infos = FileInfo.objects.all()
 
 return HttpResponseRedirect('/uploader/list')

以上就是本文的全部內(nèi)容，希望對大家的學(xué)習(xí)有所幫助，也希望大家多多支持腳本之家。

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