修改管理模型，代码如下：

class CsvImportForm(forms.Form):csv_file = forms.FileField()
@admin.register(Hero)
class HeroAdmin(admin.ModelAdmin, ExportCsvMixin):...change_list_template = "entities/heroes_changelist.html"def get_urls(self):urls = super().get_urls()my_urls = [...path('import-csv/', self.import_csv),]return my_urls + urlsdef import_csv(self, request):if request.method == "POST":csv_file = request.FILES["csv_file"]reader = csv.reader(csv_file)# Create Hero objects from passed in data# ...self.message_user(request, "Your csv file has been imported")return redirect("..")form = CsvImportForm()payload = {"form": form}return render(request, "admin/csv_form.html", payload)

创建模板文件templates/entities/heroes_changelist.html

{% extends 'admin/change_list.html' %}
{% block object-tools %}<a href="import-csv/">Import CSV</a><br />{{ block.super }}
{% endblock %}

创建模板文件templates/admin/csv_form.html

{% extends 'admin/base.html' %}
{% block content %}<div><form action="." method="POST" enctype="multipart/form-data">{{ form.as_p }}{% csrf_token %}<button type="submit">Upload CSV</button></form></div><br />
{% endblock %}

显示效果如下：