Django文件下载

有三种下载方式，点击即可进行下载。
下载的图片：

项目为MyDjango，用到了一个项目应用index。
MyDjango的urls.py

from django.urls import path, include
urlpatterns = [
    # 指向index的路由文件urls.py
    path('', include(('index.urls', 'index'), namespace='index')),
]

index的urls.py

from django.urls import path
from . import views

urlpatterns = [
    # 定义首页的路由
    path('', views.index, name='index'),
    path('download/file1', views.download1, name='download1'),
    path('download/file2', views.download2, name='download2'),
    path('download/file3', views.download3, name='download3'),
]

index的views.py

from django.shortcuts import render
from django.http import HttpResponse, Http404
from django.http import StreamingHttpResponse
from django.http import FileResponse

def index(request):
    return render(request, 'index.html')

def download1(request):
    file_path = 'abc.jpeg'
    try:
        r = HttpResponse(open(file_path, 'rb'))
        r['content_type'] = 'application/octet-stream'
        r['Content-Disposition'] = 'attachment; filename=dow1.jpg'
        return r
    except Exception:
        raise Http404('Download error')

def download2(request):
    file_path = 'abc.jpeg'
    try:
        r = StreamingHttpResponse(open(file_path, 'rb'))
        r['content_type'] = 'application/octet-stream'
        r['Content-Disposition'] = 'attachment; filename=dow2.jpg'
        return r
    except Exception:
        raise Http404('Download error')

def download3(request):
    file_path = 'abc.jpeg'
    try:
        f = open(file_path, 'rb')
        r = FileResponse(f, as_attachment=True, filename='dow3.jpg')
        return r
    except Exception:
        raise Http404('Download error')

templates的index.html

HttpResponse-下载


StreamingHttpResponse-下载


FileResponse-下载

• 视图函数download1使用HttpResponse实现文件下载。
• 视图函数download2使用StreamingHttpResponse实现文件下载。
• 视图函数download3使用FileResponse实现文件下载。