django的mysql映射文件下载_Django实现文件上传、下载

Django实现文件上传

1. 配置setting文件

1.1. 在setting里面配置文件上传路径，在setting末尾添加

#指定上传文件的存储相对路径(读取文件)

MEDIA_URL = '/media/'

#上传文件存储路径(存储路径)

MEDIA_ROOT = os.path.join(BASE_DIR,'media')

1.2. 在项目根目录新建media文件夹

1.3. 配置TEMPLATES，添加如下内容

'django.template.context_processors.media'

添加完如下所示

TEMPLATES = [

{

'BACKEND': 'django.template.backends.django.DjangoTemplates',

'DIRS': [os.path.join(BASE_DIR, 'templates')]

,

'APP_DIRS': True,

'OPTIONS': {

'context_processors': [

'django.template.context_processors.debug',

'django.template.context_processors.request',

'django.contrib.auth.context_processors.auth',

'django.contrib.messages.context_processors.messages',

'django.template.context_processors.media'

],

},

},

]

2. 配置父路由urls

2.1. 将父路由映射到子路由的路径

urlpatterns = [

path('admin/', admin.site.urls),

path('student/', include('stu.urls'))

]

2.2. 配置通过数据加载加载图片

from django.views.static import serve

from .settings import MEDIA_ROOT, DEBUG

if DEBUG:

urlpatterns += url(r'^media/(?P.*)/$', serve, {'document_root': MEDIA_ROOT}),

3. 配置子路由urls

urlpatterns = [

url(r'^$', views.index_view),

url(r'^upload/', views.upload_view),

url(r'^showall/', views.showall_view)

]

4. 构建模型数据库类models

class Student(models.Model):

sno = models.AutoField(primary_key=True)

sname = models.CharField(max_length=30)

photo = models.ImageField(upload_to='imgs')

def __str__(self):

return u'Student:{}'.format(self.sname)

5.视图逻辑处理views

from django.http import HttpResponse

from django.shortcuts import render

# Create your views here.

from stu.models import Student

def index_view(request):

if request.method == 'GET':

return render(request, 'index.html')

else:

return HttpResponse('页面有误！')

def upload_view(request):

uname=request.POST.get('uname','')

photo=request.FILES.get('photo','')

Student.objects.create(sname=uname,photo=photo)

return HttpResponse('上传成功')

def showall_view(request):

student=Student.objects.all()

return render(request,'showall.html',{'student':student})

6.前端页面

6.1. index.html

{% csrf_token %}

姓名:

头像:

6.2. showall.html

学号	姓名	照片	操作

{% for foo in student %}

{{ forloop.counter}}{{foo.sname}}下载

{% endfor %}

Django文件下载

def download_view(request):

photo = request.GET.get('photo', '')

filename = photo[photo.rindex('/') + 1:]

system_path = os.getcwd()

print(photo)

path = os.path.join(system_path, photo[1:].replace('/', '\\'))

print(path)

with open(path, 'rb') as fr:

reponse = HttpResponse(fr.read())

reponse['Content-Type'] = 'image/png'

reponse['Content-Disposition'] = 'attachment;filename=' + filename

return reponse