我将所有图像存储在项目中的某些文件夹中,例如媒体,我在html模板中有一个按钮,可以下载相应的图像。
以下是我的代码
views.py
@login_required
def download_image(request, product_id):
import os
# current_site = get_current_site(request)
product_image = Product.objects.get(id=product_id)
product_image_url = product_image.image_code_url()
print product_image_url, ">>>>>>>>>>>>>>>"
response = HttpResponse(mimetype='application/force-download')
response['X-Sendfile'] = smart_str(product_image_url)
response['Content-Length'] = os.stat(product_image_url).st_size
return response
template.html
<input type=button><a href="{% url 'download_image' product_id%}"></a>/>
结果:
/media/productb7ab/product792f2764314f40b8bd3b3d58290765cc/codes/Image_1.png >>>>>>>>>>>>>>>
ERROR 2013-10-25 18:46:21,192 (base) (7258, -1248855232): Internal Server Error: /download/code/88/
Traceback (most recent call last):
.......
.......
OSError: [Errno 2] No such file or directory: '/media/productb7ab/product792f2764314f40b8bd3b3d58290765cc/codes/Image_1.png'
但是当我点击localhost:8000/media/productb7ab/product792f2764314f40b8bd3b3d58290765cc/codes/Image_1.png
这样的网址时,我可以查看图片,
最后如何从django中的文件系统下载图像?
我在上面的代码中做错了什么?
阅读Brandon
我已经将上面的方法修改为以下代码,但我面临的错误仍然是
来自django.core.servers.basehttp导入FileWrapper
@login_required
def downloadimage(request, product_id):
import os
# current_site = get_current_site(request)
image_code = Product.objects.get(object_id=product_id)
image_code_url = image_code.image_code_url()
print image_code_url,">>>>>>>>>>>>>>"
wrapper = FileWrapper(file(image_code_url))
response = HttpResponse(wrapper, content_type='text/plain')
response['Content-Disposition'] = 'attachment; filename=%s' % os.path.basename(image_code_url)
response['Content-Length'] = os.path.getsize(image_code_url)
return response
错误
Error:IOError at /download/code/88/
[Errno 2] No such file or directory: '/media/productrbab/product792f2764314f40b8bd3b3d58290765cc/codes/Image_1.png'
Request Method: GET
Request URL: http://localhost:8000/download/qrcode/88/
Django Version: 1.5.4
Exception Type: IOError
Exception Value:
[Errno 2] No such file or directory: '/media/productrbab/product792f2764314f40b8bd3b3d58290765cc/codes/Image_1.png'
答案 0 :(得分:1)
为什么不在上一个视图中设置网址:
image_url = Product.objects.get(...).image_code_url()
然后在模板中添加一个普通链接:
<a href="{{ image_url }}">Download</a>
注意:在更大的系统中通过Django提供文件会导致效率低下 - 通过简单的HTTP服务器(Apache或Nginx)更好地为它们服务。有关django docs中媒体管理的更多信息。