写一段代码,实现使用django完成web版网页程序导入文本数据集并查看导入的文本数据集
时间: 2024-06-08 16:11:34 浏览: 9
首先,需要安装Django。在命令行中输入以下命令:
```
pip install django
```
然后,创建一个Django项目,输入以下命令:
```
django-admin startproject myproject
```
接着,在myproject目录下创建一个app,输入以下命令:
```
python manage.py startapp myapp
```
在myapp目录下,创建一个urls.py文件,用于配置路由:
```python
from django.urls import path
from . import views
urlpatterns = [
path('', views.index, name='index'),
path('upload/', views.upload, name='upload'),
path('viewdata/', views.viewdata, name='viewdata'),
]
```
在myapp目录下,创建一个views.py文件,用于处理请求:
```python
from django.shortcuts import render
from django.http import HttpResponseRedirect
from django.urls import reverse
import os
def index(request):
return render(request, 'myapp/index.html')
def upload(request):
if request.method == 'POST' and request.FILES['dataset']:
dataset = request.FILES['dataset']
filepath = os.path.join(os.getcwd(), 'myapp', 'datasets', dataset.name)
with open(filepath, 'wb+') as f:
for chunk in dataset.chunks():
f.write(chunk)
return HttpResponseRedirect(reverse('viewdata'))
return render(request, 'myapp/upload.html')
def viewdata(request):
data = []
filepath = os.path.join(os.getcwd(), 'myapp', 'datasets')
for filename in os.listdir(filepath):
with open(os.path.join(filepath, filename), 'r', encoding='utf-8') as f:
content = f.read()
data.append(content)
return render(request, 'myapp/viewdata.html', {'data': data})
```
在myapp目录下,创建一个templates目录,用于存放html模板文件。在templates目录下创建index.html文件,用于显示首页:
```html
<!DOCTYPE html>
<html>
<head>
<title>My App</title>
</head>
<body>
<h1>Welcome to My App</h1>
<p>Click the button below to upload a dataset.</p>
<form action="{% url 'upload' %}" method="post" enctype="multipart/form-data">
{% csrf_token %}
<input type="file" name="dataset" required>
<br><br>
<input type="submit" value="Upload">
</form>
</body>
</html>
```
在templates目录下创建upload.html文件,用于显示上传页面:
```html
<!DOCTYPE html>
<html>
<head>
<title>My App</title>
</head>
<body>
<h1>Upload a Dataset</h1>
<form action="{% url 'upload' %}" method="post" enctype="multipart/form-data">
{% csrf_token %}
<input type="file" name="dataset" required>
<br><br>
<input type="submit" value="Upload">
</form>
</body>
</html>
```
在templates目录下创建viewdata.html文件,用于显示数据集:
```html
<!DOCTYPE html>
<html>
<head>
<title>My App</title>
</head>
<body>
<h1>View Data</h1>
{% for content in data %}
<p>{{ content }}</p>
{% endfor %}
</body>
</html>
```
最后,在myproject目录下的settings.py文件中添加myapp应用和模板路径:
```python
INSTALLED_APPS = [
'myapp',
'django.contrib.admin',
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.messages',
'django.contrib.staticfiles',
]
TEMPLATES = [
{
'BACKEND': 'django.template.backends.django.DjangoTemplates',
'DIRS': [os.path.join(BASE_DIR, 'myapp', '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',
],
},
},
]
```
完成后,在命令行中输入以下命令启动服务器:
```
python manage.py runserver
```
访问http://localhost:8000/即可看到首页。点击上传按钮上传数据集,并访问http://localhost:8000/viewdata/查看导入的文本数据集。