def format_pdf_report(self, filename, as_response):
from reportlab.pdfgen.canvas import Canvas
sio = BytesIO()
c = Canvas(sio)
c.save()
if as_response:
response = HttpResponse(sio.getvalue(), content_type="application/pdf")
response["Content-Disposition"] = "attachment; filename=%s" % filename
return response
else:
return sio.getvalue()
def post(self, request):
src = request.body.decode('utf-8')
# 检测用户上传文件是否为图片
if src[9:14] != 'image':
return JsonResponse({"msg": "fail"})
# 定位文件所包含base64编码信息的位置并进行解码转换存入内存文件
res = src.find('base64,')
result_src = src[res + len('base64,'):]
f = BytesIO()
data = base64.b64decode(result_src)
f.write(data)
img = InMemoryUploadedFile(f, None, "image", len(data), None, None)
# 将文件上传至云服务器
leancloud.init('tiM1T9UGqwf6QTyXkn9kcL9z-gzGzoHsz',
'1GzzyA6uv4l8JNGd6etu5V5o')
execute = leancloud.File('image', img)
execute.save()
result_qrcode = qrcode.make(execute.url)
buf = BytesIO()
result_qrcode.save(buf)
img_stream = buf.getvalue()
result_img = base64.b64encode(img_stream)
return JsonResponse({
"msg": "success",
"image": bytes.decode(result_img, 'utf-8')
})
def test_document_version_download_user_view(self):
self.login(
username=TEST_USER_USERNAME, password=TEST_USER_PASSWORD
)
self.assertEqual(Document.objects.count(), 1)
response = self.post(
'documents:document_version_download', args=(
self.document.latest_version.pk,
)
)
self.assertEqual(response.status_code, 302)
self.role.permissions.add(
permission_document_download.stored_permission
)
response = self.post(
'documents:document_version_download', args=(
self.document.latest_version.pk,
)
)
self.assertEqual(response.status_code, 200)
buf = BytesIO()
buf.write(response.content)
self.assertEqual(
HASH_FUNCTION(buf.getvalue()), TEST_SMALL_DOCUMENT_CHECKSUM
)
del(buf)
def package_foirequest(foirequest):
zfile_obj = BytesIO()
with override(settings.LANGUAGE_CODE):
zfile = zipfile.ZipFile(zfile_obj, 'w')
last_date = None
date_count = 1
for message in foirequest.messages:
current_date = message.timestamp.date()
date_prefix = current_date.isoformat()
if current_date == last_date:
date_count += 1
else:
date_count = 1
date_prefix += '_%d' % date_count
last_date = current_date
att_queryset = message.foiattachment_set.filter(
is_redacted=False,
is_converted=False
)
if message.is_response:
filename = '%s_%s.txt' % (date_prefix, ugettext('publicbody'))
else:
filename = '%s_%s.txt' % (date_prefix, ugettext('requester'))
zfile.writestr(filename, message.get_formated(att_queryset).encode('utf-8'))
for attachment in att_queryset:
if not attachment.file:
continue
filename = '%s-%s' % (date_prefix, attachment.name)
zfile.write(attachment.file.path, arcname=filename)
zfile.close()
return zfile_obj.getvalue()
def get_ssr_qrcode(request, node_id):
'''返回节点配置信息的ssr二维码'''
# 获取用户对象
ss_user = request.user.ss_user
user = request.user
# 获取节点对象
node = Node.objects.get(node_id=node_id)
# 加入节点信息等级判断
if user.level < node.level:
return HttpResponse('哟小伙子，可以啊！但是投机取巧是不对的哦！')
# 符合ssr qrcode schema最后需要特殊处理的密码部分
ssr_password = base64.b64encode(bytes(ss_user.password,
'utf8')).decode('ascii')
ssr_code = '{}:{}:{}:{}:{}:{}'.format(node.server, ss_user.port,
ss_user.protocol, ss_user.method,
ss_user.obfs, ssr_password)
# 将信息编码
ssr_pass = base64.b64encode(bytes(ssr_code, 'utf8')).decode('ascii')
# 生成ss二维码
ssr_img = qrcode.make('ssr://{}'.format(ssr_pass))
buf = BytesIO()
ssr_img.save(buf)
image_stream = buf.getvalue()
# 构造图片reponse
response = HttpResponse(image_stream, content_type="image/png")
return response
def homepage(request):
"""
返回hfs系统登陆后的主界面
:param request: WSGI对象，GET
:return: 渲染后的index.html
"""
err_info = []
if not validate_identity(request):
return HttpResponseRedirect('/filescube/authentication/')
else:
request.session['access_list'] = table_access.get_access_list_by_id(request.session['username'])
try:
path = request.session['root_dir']
if key_checker.check_if_have_this_key(request.POST, 'path'):
data_dir = path + request.POST['path']
else:
data_dir = path
if request.method == 'POST':
if 'qr-code' in request.POST:
print('-------生成二维码-----')
url = 'http://' + request.POST['downloadurl']
# url = request.get_host() + "/index/?download_filename=" + filename +"&download_path=" + data_dir
img = qrcode.make(url)
buf = BytesIO()
img.save(buf)
image_stream = buf.getvalue()
response = HttpResponse(image_stream, content_type="image/png")
return response
return render(request, 'FilesCube/index.html', locals())
except Exception as error:
print(error)
return render(request, 'FilesCube/index.html', locals())
def checkface(request):
try:
files = request.FILES.get("file")
type_image = files.name.split('.')[-1]
filename = "./upload/" + hashlib.sha3_384(
files.name.encode()).hexdigest() + f".{type_image}"
with open(filename, "ab+") as fp:
fp.write(files.read())
img = BytesIO()
image = face_recognition.load_image_file(filename)
locations = face_recognition.face_locations(img=image)
result_image = Image.fromarray(image)
for pos in locations:
d = ImageDraw.Draw(result_image, 'RGBA')
d.rectangle((pos[3], pos[0], pos[1], pos[2]))
result_image.save(img, 'png')
return JsonResponse({
"status":
0,
"filename":
files.name,
"face_count":
len(locations),
"resultImg_base":
str(base64.b64encode(img.getvalue()).decode())
})
except:
return JsonResponse({"status": 1, "message": "重试一下吧. 你的照片有问题哦."})
def html_to_pdf(content, encoding="utf-8",
link_callback=fetch_resources, **kwargs):
"""
Converts html ``content`` into PDF document.
:param unicode content: html content
:returns: PDF content
:rtype: :class:`bytes`
:raises: :exc:`~easy_pdf.exceptions.PDFRenderingError`
"""
src = BytesIO(content.encode(encoding))
dest = BytesIO()
pdf = pisa.pisaDocument(src, dest, encoding=encoding,
link_callback=link_callback, **kwargs)
if pdf.err:
logger.error("Error rendering PDF document")
for entry in pdf.log:
if entry[0] == xhtml2pdf.default.PML_ERROR:
logger_x2p.error("line %s, msg: %s, fragment: %s", entry[1], entry[2], entry[3])
raise PDFRenderingError("Errors rendering PDF", content=content, log=pdf.log)
if pdf.warn:
for entry in pdf.log:
if entry[0] == xhtml2pdf.default.PML_WARNING:
logger_x2p.warning("line %s, msg: %s, fragment: %s", entry[1], entry[2], entry[3])
return dest.getvalue()
def generate_qrcode(self, data):
img = qrcode.make(data)
buf = BytesIO()
img.save(buf)
image_stream = buf.getvalue()
response = HttpResponse(image_stream, content_type="image/png")
return response
def printer_label(sample):
"""Generate the PDF of a sample for the label printer.
:param sample: the sample the label of which should be generated
:type sample: `samples.models.Sample`
:return:
the PDF as a byte stream
:rtype: str
"""
output = BytesIO()
text = sample.name
c = canvas.Canvas(output, pagesize=(width, height))
c.setAuthor("JuliaBase samples database")
c.setTitle(text)
c.setSubject("Label of {0} for the label printer".format(text))
try:
print_line(c, 0, fontsize, text)
except ExcessException:
first, second = best_split(text)
print_line(c, height / 2, fontsize_half, first, force=True)
print_line(c, 0, fontsize_half, second, force=True)
c.drawImage(ImageReader("http://chart.googleapis.com/chart?chs=116x116&cht=qr&chl={0}&chld=H|1".format(sample.id)),
width - height, 0, height, height)
c.showPage()
c.save()
return output.getvalue()
def package_foirequest(foirequest):
zfile_obj = BytesIO()
with override(settings.LANGUAGE_CODE):
zfile = zipfile.ZipFile(zfile_obj, 'w')
last_date = None
date_count = 1
for message in foirequest.messages:
current_date = message.timestamp.date()
date_prefix = current_date.isoformat()
if current_date == last_date:
date_count += 1
else:
date_count = 1
date_prefix += '_%d' % date_count
last_date = current_date
att_queryset = message.foiattachment_set.filter(is_redacted=False,
is_converted=False)
if message.is_response:
filename = '%s_%s.txt' % (date_prefix, ugettext('publicbody'))
else:
filename = '%s_%s.txt' % (date_prefix, ugettext('requester'))
zfile.writestr(filename,
message.get_formated(att_queryset).encode('utf-8'))
for attachment in att_queryset:
if not attachment.file:
continue
filename = '%s-%s' % (date_prefix, attachment.name)
zfile.write(attachment.file.path, arcname=filename)
zfile.close()
return zfile_obj.getvalue()
def test_document_download_user_view(self):
# TODO: Skip this test's file descriptor check until it gets migrate
# SingleObjectDownloadView CBV
self.login(username=TEST_USER_USERNAME, password=TEST_USER_PASSWORD)
self.assertEqual(Document.objects.count(), 1)
response = self.post('documents:document_download',
args=(self.document.pk, ))
self.assertEqual(response.status_code, 302)
self.role.permissions.add(
permission_document_download.stored_permission)
response = self.post('documents:document_download',
args=(self.document.pk, ))
self.assertEqual(response.status_code, 200)
buf = BytesIO()
buf.write(response.content)
self.assertEqual(HASH_FUNCTION(buf.getvalue()),
TEST_SMALL_DOCUMENT_CHECKSUM)
del (buf)
def generate_qrcode(request, data):
(out, prikey) = RSA_EncryptStr(data)
img = qrcode.make(b64encode(out).decode('utf-8'))
buf = BytesIO()
img.save(buf)
image_stream = buf.getvalue()
response = HttpResponse(image_stream, content_type="image/png")
return response
def gen_qrcode(data):
img = qrcode.make(data)
buf = BytesIO()
img.save(buf)
image_stream = buf.getvalue()
return image_stream
def newqrcode(request, equipment_id):
information = models.Equipment.objects.get(id=equipment_id)
i = qrcode.make(information)
buf = BytesIO()
i.save(buf)
image_stream = buf.getvalue()
response = HttpResponse(image_stream, content_type='image/png')
return response
def index(request):
img = qrcode.make(str("http://weixin.qq.com/r/_S3r8_nEbbQSra2Q93jr"))
buf = BytesIO()
img.save(buf)
image_stream = buf.getvalue()
response = HttpResponse(image_stream, content_type="image/png")
#return render(request,'mytest/index.html')
return response
def generate_qrcode(request): # 在线生成二维码
img = qrcode.make('https://www.baidu.com/') # 这里指定为百度的二维码
# img = qrcode.make(data)
buf = BytesIO()
img.save(buf)
image_stream = buf.getvalue()
response = HttpResponse(image_stream, content_type="image/png")
return response
def qrcode_(request):
#test为二维码中的内容
text = request.GET.get('text')
img = qrcode.make(text)
# 常见二进制内存对象，存储图片
buf = BytesIO()
img.save(buf)
return HttpResponse(buf.getvalue())
def verify_code(request):
'''随机验证码'''
# 1.创建画面对象
# 定义变量，用于画面的背景色、宽、高
bgcolor = (255, 255, 255)
width = 200
height = 45
im = Image.new('RGB', (width, height), bgcolor)
# 2.创建画笔对象
draw = ImageDraw.Draw(im)
# 3.调用画笔的point()函数绘制噪点
for i in range(0, 100):
xy = (random.randrange(0, width), random.randrange(0, height))
fill = (random.randrange(0, 255), random.randrange(0, 255),
random.randrange(0, 255))
draw.point(xy, fill=fill)
# 调用画笔的point()函数绘制6条干扰线
for i in range(6):
x1 = int(random.randrange(0, width))
y1 = int(random.randrange(0, height))
x2 = int(random.randrange(0, width))
y2 = int(random.randrange(0, height))
fill = (random.randrange(0, 255), random.randrange(0, 255),
random.randrange(0, 255))
draw.line([(x1, y1), (x2, y2)], fill=fill, width=2)
# 4.定义验证码的备选值
str1 = 'ABCD123EFGHIJK456klmnopqrstuvwsyzLMNOPQRS789TUVWXYZ0abcdefghij'
# 随机选取4个值作为验证码
rand_str = ''
for i in range(0, 4):
rand_str += str1[random.randrange(0, len(str1))]
# 构造字体对象，ubuntu的字体路径为“/usr/share/fonts/truetype/freefont”
# 构造字体类型和大小
font = ImageFont.truetype('FreeMono.ttf', random.randrange(23, 40))
# 绘制4个字
draw.text((15, 10), rand_str[0], font=font, fill=random.randrange(0, 255))
draw.text((65, 10), rand_str[1], font=font, fill=random.randrange(0, 255))
draw.text((120, 10), rand_str[2], font=font, fill=random.randrange(0, 255))
draw.text((175, 10), rand_str[3], font=font, fill=random.randrange(0, 255))
# 5.释放画笔
del draw
# 6.存入session，用于做进一步验证
request.session['verifycode'] = rand_str
# 内存文件操作(python2)
# import cStringIO
# buf = cStringIO.StringIO()
# 内存文件操作(python3)
from io import BytesIO
buf = BytesIO()
print(buf)
# 7.将图片保存在内存中，文件类型为png
im.save(buf, 'png')
# 8.将内存中的图片数据返回给客户端，MIME类型为图片png
return HttpResponse(buf.getvalue(), 'image/png')
def test_cmd_output(self):
""" test command output"""
output = BytesIO()
errout = BytesIO()
call_command('modscount',
stdout=output,
stderr=errout)
for model in get_models():
err_str = 'error: There are {} objects in {} model'.format(
model.objects.count(),
model.__name__
)
out_str = 'There are {} objects in {} model'.format(
model.objects.count(),
model.__name__
)
self.assertIn(err_str, errout.getvalue())
self.assertIn(out_str, output.getvalue())
def render(self, path, params):
template = get_template(path)
html = template.render(params)
response = BytesIO()
pdf = pisa.pisaDocument(BytesIO(html.encode("UTF-8")), response, encoding="UTF-8")
if not pdf.err:
return HttpResponse(response.getvalue(), content_type='application/pdf')
else:
return HttpResponse("Error Rendering PDF", status=400)
def get_qrcode(request, content):
'''返回字符串编码后的二维码图片'''
# 加入节点信息等级判断
ss_img = qrcode.make(content)
buf = BytesIO()
ss_img.save(buf)
image_stream = buf.getvalue()
# 构造图片reponse
response = HttpResponse(image_stream, content_type="image/png")
return response
def genrate_qrcode(request, data):
import qrcode
img = qrcode.make(data)
from django.utils.six import BytesIO
buf = BytesIO()
img.save(buf)
imge_stream = buf.getvalue()
response = HttpResponse(imge_stream, content_type='image/png')
return response
def format_xls_report(self, filename, as_response):
import xlwt
workbook = xlwt.Workbook("UTF-8")
sheet = workbook.add_sheet("Koodit")
y = 0
for fields in self.get_fields_iterator():
for x, val in enumerate(fields):
sheet.write(y, x, val)
y += 1
sio = BytesIO()
workbook.save(sio)
if as_response:
response = HttpResponse(sio.getvalue(), content_type="application/vnd.ms-excel")
response["Content-Disposition"] = "attachment; filename=%s" % filename
return response
else:
return sio.getvalue()
def generate_qrcode(request, *args, **kwargs):
data = request.GET.get('data', '')
img = qrcode.make(data)
buf = BytesIO()
img.save(buf)
image_stream = buf.getvalue()
response = HttpResponse(image_stream, content_type="image/png")
return response
def generate_qrcode(request):
website = request.POST.get('website')
if (len(website) != 0):
img = qrcode.make(str(website))
buf = BytesIO()
img.save(buf)
image_stream = buf.getvalue()
response = HttpResponse(image_stream, content_type="image/png")
return response
return HttpResponse(u"网址不能为空！")
def get_qrcode(request, content):
'''返回字符串编码后的二维码图片'''
# 加入节点信息等级判断
ss_img = qrcode.make(content)
buf = BytesIO()
ss_img.save(buf)
image_stream = buf.getvalue()
# 构造图片reponse
response = HttpResponse(image_stream, content_type="image/png")
return response
def createQrcode(request):
content = request.POST.get("content")
qr_img = qrcode.make(content)
buf = BytesIO()
qr_img.save(buf)
qr_image_stream = buf.getvalue()
response = HttpResponse(qr_image_stream,content_type="image/png")
return response
def qr_amount(request, amount, detail):
email = request.user.email
data = f'email:{email}?amount={amount}?detail={detail}'
img = qrcode.make(data, image_factory=PymagingImage)
Buf = BytesIO()
img.save(Buf)
image_stream = Buf.getvalue()
response = HttpResponse(image_stream, content_type='image/jpg')
response['Content-Disposition'] = 'inline; filename="qr.jpg"'
return response
def makeit(request):
if request.method == "GET":
text_one = request.GET.get('whoiam', u"我们是谁！")
text_two = request.GET.get('name', u"甲方！")
text_three = request.GET.get('whatwewant', u'我们要什么！')
text_four = request.GET.get('idontknow', u'不知道！')
text_five = request.GET.get('when', u'什么时候要！')
text_six = request.GET.get('now', u'现在！')
if text_one.strip() == "":
text_one = u"我们是谁！"
if text_two.strip() == "":
text_two = u"甲方！"
if text_three.strip() == "":
text_three = u'我们要什么！'
if text_four.strip() == "":
text_four = u'不知道！'
if text_five.strip() == "":
text_five = u'什么时候要！'
if text_six.strip() == "":
text_six = u'现在！'
one = 30
two = 330
three = 620
base = Image.open("base.png")
font = ImageFont.truetype('font.ttf', 40)
d = ImageDraw.Draw(base)
d.text((100 - len(text_one) * 10, one),
text_one,
font=font,
fill=(0, 0, 0))
d.text((400 - len(text_two) * 10, one),
text_two,
font=font,
fill=(0, 0, 0))
d.text((100 - len(text_three) * 10, two),
text_three,
font=font,
fill=(0, 0, 0))
d.text((400 - len(text_four) * 10, two),
text_four,
font=font,
fill=(0, 0, 0))
d.text((100 - len(text_five) * 10, three),
text_five,
font=font,
fill=(0, 0, 0))
d.text((400 - len(text_six) * 10, three),
text_six,
font=font,
fill=(0, 0, 0))
buf = BytesIO()
base.save(buf, format="png")
image_stream = buf.getvalue()
response = HttpResponse(base64.b64encode(image_stream))
return response
def build_xlsx_response(wb, title="report"):
title = generate_filename(title, '.xlsx')
myfile = BytesIO()
myfile.write(save_virtual_workbook(wb))
response = HttpResponse(
myfile.getvalue(),
content_type=
'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet')
response['Content-Disposition'] = 'attachment; filename=%s' % title
response['Content-Length'] = myfile.tell()
return response
def test_printing(one_per_page):
from lippukala.printing import OrderPrinter
printer = OrderPrinter()
printer.ONE_TICKET_PER_PAGE = one_per_page
for x in xrange(3):
order = _create_test_order()
printer.process_order(order)
outf = BytesIO()
outf.write(printer.finish())
assert outf.getvalue().startswith(b"%PDF")
def test_document_version_download(self):
with open(TEST_SMALL_DOCUMENT_PATH) as file_object:
document = self.document_type.new_document(file_object=File(file_object))
response = self.client.get(reverse("rest_api:documentversion-download", args=(document.latest_version.pk,)))
buf = BytesIO()
buf.write(response.content)
self.assertEqual(HASH_FUNCTION(buf.getvalue()), TEST_SMALL_DOCUMENT_CHECKSUM)
del (buf)
def resize_image(self, data, size):
""" Resizes the given image to fit inside a box of the given size. """
from machina.core.compat import PILImage as Image
image = Image.open(BytesIO(data))
# Resize!
image.thumbnail(size, Image.ANTIALIAS)
string = BytesIO()
image.save(string, format='PNG')
return string.getvalue()
def resize_image(self, data, size):
""" Resizes the given image to fit inside a box of the given size. """
from machina.core.compat import PILImage as Image
image = Image.open(BytesIO(data))
# Resize!
image.thumbnail(size, Image.ANTIALIAS)
string = BytesIO()
image.save(string, format='PNG')
return string.getvalue()
def post(self, request):
text = request.POST['content']
text = text.encode('utf8')
img = qrcode.make(text)
buf = BytesIO()
img.save(buf)
img_stream = buf.getvalue()
result_img = base64.b64encode(img_stream)
return JsonResponse({
"msg": "测试成功",
"image": bytes.decode(result_img, 'utf-8')
})
def make_mc_qrcode(request):
dt = request.GET.dict()
url = f"http://{LOCAL_HOST}:8000/meetingCheck/?"
url = url_change(url, dt)
qr = qrcode.QRCode(box_size=12, border=2)
qr.add_data(url)
qr.make(fit=True)
img = qr.make_image()
buf = BytesIO()
img.save(buf)
img_stream = buf.getvalue()
return HttpResponse(img_stream, content_type="image/jpg")
def getQrcode(request, v=None):
'''
根据请求的值返回二维码
'''
img = qrcode.make(v)
buf = BytesIO()
img.save(buf)
image_stream = buf.getvalue()
response = HttpResponse(image_stream, content_type="image/png")
return response
def user_login(request):
full_path = request.get_full_path()
if 'code' in full_path:
code = request.GET.get('code')
user_data = wechat_api(code)
nickname = user_data['nickname']
union_id = user_data['union_id']
head_img = user_data['head_img']
user = User.objects.filter(union_id=union_id).first()
status = request.GET.get('status')
if user:
if user.name and user.hotel_name:
return redirect('/customer_profile/{0}/'.format(user.id))
else:
return redirect('/customer/save_message/')
else:
event = Event.objects.all().first()
user = User.objects.create(union_id=union_id,
head_img=head_img,
status=0,
event=event)
request.session['uid'] = user.id
qr = qrcode.make(
'https://pinkslash.metatype.cn/wechat_login/?status=sendcredits_{0}_{1}'
.format(user.id, event.id))
buf = BytesIO()
qr.save(buf)
qr_data = buf.getvalue()
buf.write(qr_data)
qr_img = InMemoryUploadedFile(file=buf,
field_name=None,
name='user.png',
content_type='image/png',
size=len(qr_data),
charset=None)
_user = User.objects.get(id=user.id)
_user.qrcode = qr_img
_user.save()
return redirect('/customer/save_message/')
else:
redirect_uri = 'https://pinkslash.metatype.cn' + full_path
get_code_url = "https://open.weixin.qq.com/connect/oauth2/authorize?appid=wxc7594d7d49e0235f&redirect_uri=" + \
redirect_uri + "&response_type=code&scope=snsapi_userinfo"
return redirect(get_code_url)
return HttpResponse("xixi")
def render(data, width, height, force=True, padding=None, overlays=(), overlay_sources=(),
overlay_tints=(), overlay_sizes=None, overlay_positions=None, mask=None, mask_source=None,
center=".5,.5", format=IMAGE_DEFAULT_FORMAT, quality=IMAGE_DEFAULT_QUALITY, fill=None, background=None,
tint=None, pre_rotation=None, post_rotation=None, crop=True, grayscale=False):
"""
Rescale the given image, optionally cropping it to make sure the result image has the specified width and height.
"""
if not isinstance(data, six.string_types):
input_file = BytesIO(data)
else:
input_file = StringIO(data)
img = pil.open(input_file)
if img.mode != "RGBA":
img = img.convert("RGBA")
if width is None:
width = img.size[0]
if height is None:
height = img.size[1]
img = do_rotate(img, pre_rotation)
if crop:
img = resizeCrop(img, width, height, center, force)
else:
img = resizeScale(img, width, height, force)
if grayscale:
img = do_grayscale(img)
do_tint(img, tint)
img = do_fill(img, fill, width, height)
img = do_background(img, background)
do_mask(img, mask, mask_source)
img = do_overlays(img, overlays, overlay_tints, overlay_sources, overlay_sizes, overlay_positions)
img = do_padding(img, padding)
img = do_rotate(img, post_rotation)
tmp = BytesIO()
if not format.upper() in ALPHA_FORMATS:
img = img.convert("RGB")
img.save(tmp, format, quality=quality)
tmp.seek(0)
output_data = tmp.getvalue()
input_file.close()
tmp.close()
return output_data
def pay(request, oid):
# 查询到这个订单信息
order = OrderInfo.objects.get(oid=oid)
# 修改支付信息
order.oIsPay = True
# 将对象保存到数据库中
order.save()
# 根据收到的订单号构造二维码
img = qrcode.make('订单号\n ' + oid + '\n ' +
'谢谢你来到天天水果购物，祝你生活愉快！')
buf = BytesIO()
img.save(buf)
image_stream = buf.getvalue()
# 构造上下文
context = {
'order': order,
'img': image_stream,
}
#，付帐后，统计销量
# 查询发货单，统计销量信息
all = OrderDetailInfo.objects.all().filter(isTrue=False)
# 遍历
for a in all:
# 查询销量表中是否已有此数据，如果则是增加信息，若没有则添加进去
sale_number = sales.objects.filter(goods=a.goods)
# 数据库中有此信息
if len(sale_number) == 1:
# 销量加上去
sale1 = sale_number[0]
sale1.count += a.count
# 算出此部分销售额
price1 = a.price * a.count
sale1.totalprice += price1
sale1.save()
a.isTrue = True
a.save()
# 数据库中没有此信息
else:
sale = sales()
sale.goods = a.goods
sale.count = a.count
# 计算销售额
price2 = a.count * a.price
sale.totalprice = price2
sale.save()
a.isTrue = True
a.save()
# return render(request,'df_order/pay.html',context)
response = HttpResponse(image_stream, content_type="image/png")
return response
def create_verify_code(request):
"""使用Pillow包生成验证码图片"""
# 引入随机函数模块
import random
# 定义变量，用于画面的背景色、宽、高
bgcolor = (random.randrange(20, 100), random.randrange(20,
100), 255) # RGB
width = 100
height = 25
# 创建画面对象
im = Image.new('RGB', (width, height), bgcolor)
# 创建画笔对象
draw = ImageDraw.Draw(im)
# 调用画笔的point()函数绘制噪点
for i in range(0, 100):
xy = (random.randrange(0, width), random.randrange(0, height))
fill = (random.randrange(0, 255), 255, random.randrange(0, 255))
draw.point(xy, fill=fill)
# 定义验证码的备选值
str1 = 'ABCD123EFGHIJK456LMNOPQRS789TUVWXYZ0'
# 随机选取4个值作为验证码
rand_str = ''
for i in range(0, 4):
rand_str += str1[random.randrange(0, len(str1))]
# 构造字体对象，ubuntu的字体路径为“/usr/share/fonts/truetype/freefont”
font = ImageFont.truetype('FreeMono.ttf', 23)
# 构造字体颜色
fontcolor = (255, random.randrange(0, 255), random.randrange(0, 255))
# 绘制4个字
draw.text((5, 2), rand_str[0], font=font, fill=fontcolor)
draw.text((25, 2), rand_str[1], font=font, fill=fontcolor)
draw.text((50, 2), rand_str[2], font=font, fill=fontcolor)
draw.text((75, 2), rand_str[3], font=font, fill=fontcolor)
# 释放画笔
del draw
# 存入session，用于做进一步验证
request.session['verifycode'] = rand_str
# 内存文件操作
buf = BytesIO()
# 将图片保存在内存中，文件类型为png
im.save(buf, 'png')
# 将内存中的图片数据返回给客户端，MIME类型为图片png
return HttpResponse(buf.getvalue(), 'image/png')
def generate_thumb(img, thumb_size, extension, image_size=None):
img.seek(0) # see http://code.djangoproject.com/ticket/8222 for details
image = Image.open(img)
# Convert to RGB if necessary
if image.mode not in ("L", "RGB", "RGBA"):
image = image.convert("RGB")
# get size
thumb_w, thumb_h = thumb_size
if not thumb_h:
if not image_size:
image_size = image.size
xsize, ysize = image_size
thumb_h = float(thumb_w) / xsize * ysize
elif not thumb_w:
if not image_size:
image_size = image.size
xsize, ysize = image_size
thumb_w = float(thumb_h) / ysize * xsize
# If you want to generate a square thumbnail
if thumb_w == thumb_h:
# quad
if not image_size:
image_size = image.size
xsize, ysize = image_size
# get minimum size
minsize = min(xsize, ysize)
# largest square possible in the image
xnewsize = (xsize - minsize) / 2
ynewsize = (ysize - minsize) / 2
# crop it
image2 = image.crop((xnewsize, ynewsize, xsize - xnewsize, ysize - ynewsize))
# load is necessary after crop
image2.load()
# thumbnail of the cropped image (with ANTIALIAS to make it look better)
image2.thumbnail((thumb_w, thumb_h), Image.ANTIALIAS)
else:
# not quad
image2 = image
image2.thumbnail((thumb_w, thumb_h), Image.ANTIALIAS)
io = BytesIO()
# PNG and GIF are the same, JPG is JPEG
if extension.upper() == "JPG":
extension = "JPEG"
image2.save(io, extension)
return ContentFile(io.getvalue()), (thumb_w, thumb_h)
def generate_totp_config_svg(device, issuer, label):
params = {
'secret': b32encode(device.bin_key).decode('utf-8'),
'algorithm': 'SHA1',
'digits': device.digits,
'period': device.step,
'issuer': issuer,
}
otpauth_url = 'otpauth://totp/{label}?{query}'.format(
label=quote(label),
query=urlencode(params),
)
img = qrcode.make(otpauth_url, image_factory=SvgPathImage)
io = BytesIO()
img.save(io)
return io.getvalue()
def get_test_image_data(size=(32, 32), color=(250, 250, 210), format="JPEG"):
"""
Get binary image data with the given specs.
:param size: Size tuple
:type size: tuple[int, int]
:param color: RGB color triple
:type color: tuple[int, int, int]
:param format: PIL image format specifier
:type format: str
:return: Binary data
:rtype: bytes
"""
img = Image.new(mode="RGB", size=size)
img.paste(color)
sio = BytesIO()
img.save(sio, format=format, quality=75)
return sio.getvalue()
def parse_attachment(self, message_part):
content_disposition = message_part.get("Content-Disposition", None)
if content_disposition:
dispo_type, dispo_dict = self.parse_dispositions(content_disposition)
if dispo_type == "attachment" or (dispo_type == 'inline' and
'filename' in dispo_dict):
content_type = message_part.get("Content-Type", None)
file_data = message_part.get_payload(decode=True)
if file_data is None:
payloads = message_part.get_payload()
file_data = '\n\n'.join([p.as_string() for p in payloads])
try:
file_data = file_data.encode('utf-8')
except:
pass
attachment = BytesIO(file_data)
attachment.content_type = message_part.get_content_type()
attachment.size = len(file_data)
attachment.name = None
attachment.create_date = None
attachment.mod_date = None
attachment.read_date = None
if "filename" in dispo_dict:
attachment.name = dispo_dict['filename']
if content_type:
_, content_dict = self.parse_dispositions(content_type)
if 'name' in content_dict:
attachment.name = content_dict['name']
if attachment.name is None and content_type == 'message/rfc822':
p = Parser()
msgobj = p.parse(BytesIO(attachment.getvalue()))
subject = self.parse_header_field(msgobj['Subject'])
if subject:
attachment.name = '%s.eml' % subject[:45]
if "create-date" in dispo_dict:
attachment.create_date = dispo_dict['create-date'] # TODO: datetime
if "modification-date" in dispo_dict:
attachment.mod_date = dispo_dict['modification-date'] # TODO: datetime
if "read-date" in dispo_dict:
attachment.read_date = dispo_dict['read-date'] # TODO: datetime
return attachment
return None
def get_ss_qrcode(request, node_id):
'''返回节点配置信息的ss二维码'''
# 获取用户对象
ss_user = request.user.ss_user
user = request.user
# 获取节点对象
node = Node.objects.get(node_id=node_id)
# 加入节点信息等级判断
if user.level < node.level:
return HttpResponse('哟小伙子，可以啊！但是投机取巧是不对的哦！')
ss_link = node.get_ss_link(ss_user)
ss_img = qrcode.make(ss_link)
buf = BytesIO()
ss_img.save(buf)
image_stream = buf.getvalue()
# 构造图片reponse
response = HttpResponse(image_stream, content_type="image/png")
return response
class CouchDBFile(File):
"""
CouchDBFile - a Django File-like class for CouchDB documents.
"""
def __init__(self, name, storage, mode):
self._name = name
self._storage = storage
self._mode = mode
self._is_dirty = False
try:
self._doc = self._storage.get_document(name)
tmp, ext = os.path.split(name)
if ext:
filename = "content." + ext
else:
filename = "content"
attachment = self._storage.db.get_attachment(self._doc, filename=filename)
self.file = BytesIO(attachment)
except couchdb.client.ResourceNotFound:
if 'r' in self._mode:
raise ValueError("The file cannot be reopened.")
else:
self.file = BytesIO()
self._is_dirty = True
@property
def size(self):
return self._doc['size']
def write(self, content):
if 'w' not in self._mode:
raise AttributeError("File was opened for read-only access.")
self.file = BytesIO(content)
self._is_dirty = True
def close(self):
if self._is_dirty:
self._storage._put_file(self._name, self.file.getvalue())
self.file.close()
def get_file_hash(storage, path):
"""
Create md5 hash from file contents.
"""
contents = storage.open(path).read()
file_hash = hashlib.md5(contents).hexdigest()
# Check if content should be gzipped and hash gzipped content
content_type = mimetypes.guess_type(path)[0] or 'application/octet-stream'
if settings.is_gzipped and content_type in settings.gzip_content_types:
cache_key = get_cache_key('gzip_hash_%s' % file_hash)
file_hash = cache.get(cache_key, False)
if file_hash is False:
buffer = BytesIO()
zf = gzip.GzipFile(
mode='wb', compresslevel=6, fileobj=buffer, mtime=0.0)
zf.write(force_bytes(contents))
zf.close()
file_hash = hashlib.md5(buffer.getvalue()).hexdigest()
cache.set(cache_key, file_hash)
return '"%s"' % file_hash
def gen_face_pay_qrcode(request):
'''生成当面付的二维码'''
try:
# 从seesion中获取订单的二维码
url = request.session.get('code_url', '')
# 生成支付宝申请记录
record = PayRequest.objects.create(username=request.user,
info_code=request.session['out_trade_no'],
amount=request.session['amount'],)
# 删除sessions信息
del request.session['code_url']
del request.session['amount']
# 生成ss二维码
img = qrcode.make(url)
buf = BytesIO()
img.save(buf)
image_stream = buf.getvalue()
# 构造图片reponse
response = HttpResponse(image_stream, content_type="image/png")
return response
except:
return HttpResponse('wrong request')
def parse_attachment(self, message_part):
content_disposition = message_part.get("Content-Disposition", None)
if content_disposition:
dispo_type, dispo_dict = self.parse_dispositions(content_disposition)
if dispo_type == "attachment" or (dispo_type == "inline" and "filename" in dispo_dict):
content_type = message_part.get("Content-Type", None)
file_data = message_part.get_payload(decode=True)
if file_data is None:
payloads = message_part.get_payload()
file_data = "\n\n".join([p.as_string() for p in payloads]).encode("utf-8")
attachment = BytesIO(file_data)
attachment.content_type = message_part.get_content_type()
attachment.size = len(file_data)
attachment.name = None
attachment.create_date = None
attachment.mod_date = None
attachment.read_date = None
if "filename" in dispo_dict:
attachment.name = dispo_dict["filename"]
if content_type:
_, content_dict = self.parse_dispositions(content_type)
if "name" in content_dict:
attachment.name = content_dict["name"]
if attachment.name is None and content_type == "message/rfc822":
p = Parser()
msgobj = p.parse(BytesIO(attachment.getvalue()))
subject = self.parse_header_field(msgobj["Subject"])
if subject:
attachment.name = "%s.eml" % subject[:45]
if "create-date" in dispo_dict:
attachment.create_date = dispo_dict["create-date"] # TODO: datetime
if "modification-date" in dispo_dict:
attachment.mod_date = dispo_dict["modification-date"] # TODO: datetime
if "read-date" in dispo_dict:
attachment.read_date = dispo_dict["read-date"] # TODO: datetime
return attachment
return None
def _process_image(self):
"""
Preprocess the uploaded image file, if required.
This may transcode the image to a JPEG or PNG if it's not either to begin with.
:raises InvalidImage: Exception raised if the uploaded file is not valid.
"""
if not self.image: # No image set - we can't do this right now
return
if self.image_format: # Assume that if image_format is set, no further processing is required
return
try:
img = Image.open(self.image)
img.load()
except Exception as exc:
raise InvalidImage("Image %s not valid (%s)" % (self.image, exc)) from exc
if img.format not in ("JPEG", "PNG"): # Needs transcoding.
if self.type in ("map", "ground_plan"):
target_format = "PNG"
save_kwargs = {}
else:
target_format = "JPEG"
save_kwargs = {"quality": 75, "progressive": True}
image_bio = BytesIO()
img.save(image_bio, format=target_format, **save_kwargs)
self.image = ContentFile(
image_bio.getvalue(),
name=os.path.splitext(self.image.name)[0] + ".%s" % target_format.lower()
)
self.image_format = target_format
else: # All good -- keep the file as-is.
self.image_format = img.format
class OrderPrinter(object):
PAGE_WIDTH = 21.0 * cm
PAGE_HEIGHT = 29.7 * cm
PAGE_MARGIN_Y = 20 * mm
PAGE_MARGIN_X = 18 * mm
TEXT_Y = 80 * mm
INTRA_TICKET_X_MARGIN = 12 * mm
INTERTICKET_MARGIN = 0.5 * cm
TICKET_HEIGHT = 3 * cm
ONE_TICKET_PER_PAGE = False
def __init__(self, print_logo_path=PRINT_LOGO_PATH, print_logo_size_cm=PRINT_LOGO_SIZE_CM):
self.output = BytesIO()
self.canvas = Canvas(self.output, pagesize=(self.PAGE_WIDTH, self.PAGE_HEIGHT))
self.n_orders = 0
self.print_logo_path = print_logo_path
self.print_logo_size_cm = print_logo_size_cm
def finish(self):
self.canvas.save()
return self.output.getvalue()
def _align_draw_y(self, draw_y):
resolution_cm = 0.5
return int(draw_y / cm / resolution_cm) * resolution_cm * cm
def get_heading_texts(self, order, n_orders):
return [
(("Viitenumero: %s" % order.reference_number) if order.reference_number else None),
"Tilausaika: %s" % order.created_on.strftime("%d.%m.%Y klo %H:%M"),
]
def get_free_text(self, order):
return order.free_text.strip()
def _prime_new_order(self, order):
canvas = self.canvas
if self.n_orders > 0:
canvas.showPage()
self.n_orders += 1
# Draw address
y0 = self.PAGE_HEIGHT - 40 * mm
x0 = 18 * mm
if 0:
canvas.setStrokeColor("silver")
canvas.rect(x0, y0 - 35 * mm, 94 * mm, 35 * mm)
canvas.setFillColor("black")
font_size = 13
leading = font_size * 1.3
draw_multiline(
canvas, x0 + 2 * mm, y0 - (1 * mm), font_size, leading,
order.address_text.splitlines()
)
canvas.setFillColor("black")
font_size = 11
leading = font_size * 1.3
draw_multiline(
canvas, 115 * mm, y0 - (1 * mm), font_size, leading,
self.get_heading_texts(order, self.n_orders)
)
if self.print_logo_path:
image_width, image_height = [n * cm for n in self.print_logo_size_cm]
canvas.drawImage(
self.print_logo_path,
115 * mm, y0 + 1 * mm,
image_width, image_height,
)
y = 297 * mm - self.TEXT_Y
canvas.line(self.PAGE_MARGIN_X, y, self.PAGE_WIDTH - self.PAGE_MARGIN_X, y)
y -= 3 * mm
font_size = 11.5
leading = font_size * 1.4
y = draw_multiline(canvas, 18 * mm, y, font_size, leading, self.get_free_text(order).splitlines())
y -= 6 * mm
canvas.line(self.PAGE_MARGIN_X, y, self.PAGE_WIDTH - self.PAGE_MARGIN_X, y)
self.draw_y = self._align_draw_y(y - self.INTERTICKET_MARGIN)
def process_order(self, order):
if self.ONE_TICKET_PER_PAGE:
for index, code in enumerate(order.code_set.order_by("literate_code", "code")):
self._prime_new_order(order)
self._print_code(index, order, code)
else:
self._prime_new_order(order)
for index, code in enumerate(order.code_set.order_by("literate_code", "code")):
self._print_code(index, order, code)
def _print_code(self, index, order, code):
if self.draw_y - self.TICKET_HEIGHT < max(self.INTERTICKET_MARGIN, self.PAGE_MARGIN_Y):
self.canvas.showPage()
self.canvas.setFont("Helvetica", 9, 8)
page_id_text = "Sivu %d" % self.canvas._pageNumber
if order.reference_number:
page_id_text += " - Viitenumero: %s" % order.reference_number
self.canvas.drawString(self.PAGE_MARGIN_X, self.PAGE_HEIGHT - self.PAGE_MARGIN_Y, page_id_text)
self.draw_y = self._align_draw_y(self.PAGE_HEIGHT - self.PAGE_MARGIN_Y - 10 * mm)
ticket_width = self.PAGE_WIDTH - 2 * self.PAGE_MARGIN_X
with save_state(self.canvas):
self.canvas.translate(self.PAGE_MARGIN_X, self.draw_y - self.TICKET_HEIGHT)
self.canvas.roundRect(0, 0, ticket_width, self.TICKET_HEIGHT, 0.15 * cm)
linear_barcode_width = self.PAGE_WIDTH * 0.5
barcode_height = 0.5 * self.TICKET_HEIGHT
linear_barcode = createBarcodeDrawing(
"Standard39",
checksum=False, # Seems to be extraneous (using Android's Barcode reader app),
quiet=False, # We'll deal with these ourselves
value=code.full_code,
width=linear_barcode_width,
height=barcode_height
)
barcode_bottom_y = self.TICKET_HEIGHT - 3 * mm - barcode_height
draw_on_pdf(linear_barcode, self.canvas, self.INTRA_TICKET_X_MARGIN, barcode_bottom_y)
qr_barcode_size = self.TICKET_HEIGHT - 6 * mm
qr_barcode = createBarcodeDrawing(
"QR",
value=code.full_code,
barBorder=0, # We'll deal with these ourselves
width=qr_barcode_size,
height=qr_barcode_size
)
draw_on_pdf(qr_barcode, self.canvas, ticket_width - self.INTRA_TICKET_X_MARGIN - qr_barcode_size, 3 * mm)
y = draw_multiline(
self.canvas, self.INTRA_TICKET_X_MARGIN, 11 * mm, 9, 12,
[
u"%s \u2014 %s" % (code.product_text, code.full_code),
code.literate_code
]
)
self.draw_y -= (self.INTERTICKET_MARGIN + self.TICKET_HEIGHT)
class TestMediaIoBaseDownload(unittest.TestCase):
def setUp(self):
http = HttpMock(datafile('zoo.json'), {'status': '200'})
zoo = build('zoo', 'v1', http=http)
self.request = zoo.animals().get_media(name='Lion')
self.fd = BytesIO()
def test_media_io_base_download(self):
self.request.http = HttpMockSequence([
({'status': '200',
'content-range': '0-2/5'}, b'123'),
({'status': '200',
'content-range': '3-4/5'}, b'45'),
])
self.assertEqual(True, self.request.http.follow_redirects)
download = MediaIoBaseDownload(
fd=self.fd, request=self.request, chunksize=3)
self.assertEqual(self.fd, download._fd)
self.assertEqual(3, download._chunksize)
self.assertEqual(0, download._progress)
self.assertEqual(None, download._total_size)
self.assertEqual(False, download._done)
self.assertEqual(self.request.uri, download._uri)
status, done = download.next_chunk()
self.assertEqual(self.fd.getvalue(), b'123')
self.assertEqual(False, done)
self.assertEqual(3, download._progress)
self.assertEqual(5, download._total_size)
self.assertEqual(3, status.resumable_progress)
status, done = download.next_chunk()
self.assertEqual(self.fd.getvalue(), b'12345')
self.assertEqual(True, done)
self.assertEqual(5, download._progress)
self.assertEqual(5, download._total_size)
def test_media_io_base_download_handle_redirects(self):
self.request.http = HttpMockSequence([
({'status': '200',
'content-location': 'https://secure.example.net/lion'}, b''),
({'status': '200',
'content-range': '0-2/5'}, b'abc'),
])
download = MediaIoBaseDownload(
fd=self.fd, request=self.request, chunksize=3)
status, done = download.next_chunk()
self.assertEqual('https://secure.example.net/lion', download._uri)
def test_media_io_base_download_handle_4xx(self):
self.request.http = HttpMockSequence([
({'status': '400'}, ''),
])
download = MediaIoBaseDownload(
fd=self.fd, request=self.request, chunksize=3)
try:
status, done = download.next_chunk()
self.fail('Should raise an exception')
except HttpError:
pass
# Even after raising an exception we can pick up where we left off.
self.request.http = HttpMockSequence([
({'status': '200',
'content-range': '0-2/5'}, b'123'),
])
status, done = download.next_chunk()
self.assertEqual(self.fd.getvalue(), b'123')
def test_media_io_base_download_retries_5xx(self):
self.request.http = HttpMockSequence([
({'status': '500'}, ''),
({'status': '500'}, ''),
({'status': '500'}, ''),
({'status': '200',
'content-range': '0-2/5'}, b'123'),
({'status': '503'}, ''),
({'status': '503'}, ''),
({'status': '503'}, ''),
({'status': '200',
'content-range': '3-4/5'}, b'45'),
])
download = MediaIoBaseDownload(
fd=self.fd, request=self.request, chunksize=3)
self.assertEqual(self.fd, download._fd)
self.assertEqual(3, download._chunksize)
self.assertEqual(0, download._progress)
self.assertEqual(None, download._total_size)
self.assertEqual(False, download._done)
self.assertEqual(self.request.uri, download._uri)
# Set time.sleep and random.random stubs.
sleeptimes = []
download._sleep = lambda x: sleeptimes.append(x)
download._rand = lambda: 10
status, done = download.next_chunk(num_retries=3)
# Check for exponential backoff using the rand function above.
self.assertEqual([20, 40, 80], sleeptimes)
self.assertEqual(self.fd.getvalue(), b'123')
self.assertEqual(False, done)
self.assertEqual(3, download._progress)
self.assertEqual(5, download._total_size)
self.assertEqual(3, status.resumable_progress)
# Reset time.sleep stub.
del sleeptimes[0:len(sleeptimes)]
status, done = download.next_chunk(num_retries=3)
# Check for exponential backoff using the rand function above.
self.assertEqual([20, 40, 80], sleeptimes)
self.assertEqual(self.fd.getvalue(), b'12345')
self.assertEqual(True, done)
self.assertEqual(5, download._progress)
self.assertEqual(5, download._total_size)