Django實現文件上傳下載功能

這篇文章主要爲大家詳細介紹了Django實現文件上傳下載功能，具有一定的參考價值，感興趣的小夥伴們可以參考一下

項目介紹

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

1.要支持一次上傳多個文件

2.支持上傳後記錄上傳的數據以及列表展示

3.支持下載和刪除文件記錄

效果展示

數據庫記錄

開發步驟

創建項目：

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

目錄結構:

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容，希望對大家的學習有所幫助，也希望大家多多支持神馬文庫。