通过Django表单集上传多个文件-MultiValueDictKeyError

Question

试图制作一个处理多个文件上传并将其存储到标准位置的应用程序，但我遇到了一个问题。提交表单时，django在/pdfchecker/返回"MultiValueDictKeyError

"'docfile'"

forms.py

    from django import forms
class UploadPdf(forms.Form):
    docfile = forms.FileField(label='Browse')
class UploadPdfUrl(forms.Form):
    docurl = forms.URLField(label='Address')

型号.py

    from django.db import models
class handle_UploadPdf(models.Model):
    docfile = models.FileField(upload_to='.')

views.py

def上传（请求）：

UploadPdfFormSet = formset_factory(UploadPdf, max_num=10,)

if request.method == 'POST':
    formsetFile = UploadPdfFormSet(request.POST, request.FILES)
    if formsetFile.is_valid():
        newdoc = handle_UploadPdf(docfile = request.FILES['docfile'])
        newdoc.save()
        return HttpResponse('yey')
else:
    formsetFile = UploadPdfFormSet()
    formURL = UploadPdfUrl
return render(request, 'pdfchecker/index.html', {
    'formsetFile': formsetFile, 'formURL': formURL,
    })
page_visits = int(request.COOKIES.get('page_visits', '0'))
if request.COOKIES.has_key('last_visit'):
    last_visit = request.COOKIES['last_visit']
    last_visit_time = datetime.strptime(last_visit[:-7], "%Y-%m-%d %H:%M:%S")
    if (datetime.now() - last_visit_time).seconds > 5:
        response.set_cookie('page_visits', visits+1)
        response.set_cookie('last_visit', datetime.now())
else:
    response.set_cookie('last_visit', datetime.now())
return response

HTML模板：

<div class="f_unify">
        <form class="simpleform" action="" method="post" enctype="multipart/form-data">
            {{ formsetFile.management_form }}
            {% for form in formsetFile.forms %}
                        <fieldset class="mainfieldset">
                        <legend class="outer">
                        <span class="legendtext">Check by URI</span>
                        </legend>
                        <div class="singlerow">
                        {% csrf_token %}
            {{ formURL.as_table }} 
                        <input type="submit" value="Check" />
                        </div>

            <span class="description">(<cite>http://www.egovmon.no/test.pdf</cite>)</span>
                        </fieldset>

            {% endfor %}
        </form>
                <form class="simpleform" action="." method="post" enctype="multipart/form-data">
            {{ formsetFile.management_form }}
            {% for form in formsetFile.forms %}
                        <fieldset class="mainfieldset">
                        <legend class="outer">
                        <span class="legendtext">Check by File Upload</span>
                        </legend>
                        <div class="singlerow">
            <div class="table">
                <input type="submit" value="Check" />
            <table class='no_error'>        
            {% csrf_token %}
            {{ formsetFile.as_p }}
            </table>
                        </div>
            </div>

                        </fieldset>
            {% endfor %}
            <script>
                var maxRows = 10;
                var i = 1;
                $('#add_more').click(function() {
                    if(i < maxRows) {
                    cloneMore('div.table:last', 'service' + i++);
                    }
                    else {
                        alert('You can only upload 10 files per instance')
                        }
                })
            </script>

        </form>

</div>

设置.py:

    """
Django settings for testproject project.
For more information on this file, see
https://docs.djangoproject.com/en/1.6/topics/settings/
For the full list of settings and their values, see
https://docs.djangoproject.com/en/1.6/ref/settings/
"""
# Build paths inside the project like this: os.path.join(BASE_DIR, ...)
import os
BASE_DIR = os.path.dirname(os.path.dirname(__file__))
TEMPLATE_DIRS = [os.path.join(BASE_DIR, 'templates')]

# Quick-start development settings - unsuitable for production
# See https://docs.djangoproject.com/en/1.6/howto/deployment/checklist/
# SECURITY WARNING: keep the secret key used in production secret!
SECRET_KEY = '0o0g&$q4jeg%d#+5gu^b2x0jclifrul-3^q0e9(x_vwqdz3+x@'
# SECURITY WARNING: don't run with debug turned on in production!
DEBUG = True
TEMPLATE_DEBUG = True
ALLOWED_HOSTS = []

# Application definition
INSTALLED_APPS = (
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'pdfchecker',
    'authentication',
)
MIDDLEWARE_CLASSES = (
    'django.contrib.sessions.middleware.SessionMiddleware',
    'django.middleware.common.CommonMiddleware',
    'django.middleware.csrf.CsrfViewMiddleware',
    'django.contrib.auth.middleware.AuthenticationMiddleware',
    'django.contrib.messages.middleware.MessageMiddleware',
    'django.middleware.clickjacking.XFrameOptionsMiddleware',
)
ROOT_URLCONF = 'testproject.urls'
WSGI_APPLICATION = 'testproject.wsgi.application'

# Database
# https://docs.djangoproject.com/en/1.6/ref/settings/#databases
DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.sqlite3',
        'NAME': os.path.join(BASE_DIR, 'db.sqlite3'),
    }
}
# Internationalization
# https://docs.djangoproject.com/en/1.6/topics/i18n/
LANGUAGE_CODE = 'en-us'
TIME_ZONE = 'UTC'
USE_I18N = True
USE_L10N = True
USE_TZ = True

# Static files (CSS, JavaScript, Images)
# https://docs.djangoproject.com/en/1.6/howto/static-files/
MEDIA_ROOT = os.path.join(BASE_DIR, 'media')
MEDIA_URL = '/media/'
STATIC_URL = '/static/'
STATICFILES_DIRS =(
        os.path.join(os.path.dirname(BASE_DIR), "static"),
    )

错误：

Error:
    MultiValueDictKeyError at /pdfchecker/
"'docfile'"
Request Method:     POST
Request URL:    http://tt5.s.tingtun.no:7842/pdfchecker/
Django Version:     1.6.1
Exception Type:     MultiValueDictKeyError
Exception Value:    
"'docfile'"
Exception Location:     /usr/local/lib/python2.7/dist-packages/django/utils/datastructures.py in __getitem__, line 301
Python Executable:  /usr/bin/python
Python Version:     2.7.6
Python Path:    
['/home/student/django/1utkast/src',
 '/usr/local/lib/python2.7/dist-packages/TingtunUtils-0.1-py2.7.egg',
 '/usr/local/lib/python2.7/dist-packages/requests-2.0.1-py2.7.egg',
 '/usr/local/lib/python2.7/dist-packages/setuptools-2.0.1-py2.7.egg',
 '/usr/local/lib/python2.7/dist-packages/pip-1.4.1-py2.7.egg',
 '/usr/lib/python2.7',
 '/usr/lib/python2.7/plat-x86_64-linux-gnu',
 '/usr/lib/python2.7/lib-tk',
 '/usr/lib/python2.7/lib-old',
 '/usr/lib/python2.7/lib-dynload',
 '/usr/local/lib/python2.7/dist-packages',
 '/usr/lib/python2.7/dist-packages',
 '/usr/lib/python2.7/dist-packages/PILcompat',
 '/usr/lib/pymodules/python2.7']
Server time:    Mon, 28 Apr 2014 14:10:07 +0000

追溯：

Traceback Switch to copy-and-paste view
/usr/local/lib/python2.7/dist-packages/django/core/handlers/base.py in get_response
                        response = wrapped_callback(request, *callback_args, **callback_kwargs)
    ...
▶ Local vars
/home/student/django/1utkast/src/pdfchecker/views.py in upload
                newdoc = handle_UploadPdf(docfile = request.FILES['docfile'])
    ...
▶ Local vars
/usr/local/lib/python2.7/dist-packages/django/utils/datastructures.py in __getitem__
                raise MultiValueDictKeyError(repr(key))
    ...
▶ Local vars 

Answer 1

在views.py中，

request.FILES['docfile']

引发MultiValueDictKeyError，其中

if request.method == 'POST':
    formsetFile = UploadPdfFormSet(request.POST, request.FILES)
    if formsetFile.is_valid():
        newdoc = handle_UploadPdf(docfile = request.FILES['docfile'])
        newdoc.save()
        return HttpResponse('yey')

此代码段不检查请求的文件是否包含文件"docfile"，因此它给出了多值dictkeyerror。因此，如果您检查"docfile"是否在请求中。FILES之前，它解决了错误。

if formsetFile.is_valid() and 'docfile' in request.FILES:
    newdoc = handle_UploadPdf(docfile = request.FILES['docfile'])
    newdoc.save()

因为请求。如果FILES['docfile']不在请求中，则不会编译它。文件