from flask import Flask, request, render_template<\/p>\napp = Flask(__name__)<\/p>\n
@app.route('\/')<\/p>\n
def form():<\/p>\n
return render_template('form.html')<\/p>\n
@app.route('\/submit', methods=['POST'])<\/p>\n
def submit_data():<\/p>\n
username = request.form['username']<\/p>\n
email = request.form['email']<\/p>\n
age = request.form['age']<\/p>\n
return f"Username: {username}, Email: {email}, Age: {age}"<\/p>\n
if __name__ == '__main__':<\/p>\n
app.run(debug=True)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u521b\u5efa\u4e86\u4e00\u4e2a\u7b80\u5355\u7684Flask\u5e94\u7528\uff0c\u5176\u4e2d\u5305\u542b\u4e00\u4e2a\u8868\u5355\u9875\u9762\u548c\u4e00\u4e2a\u5904\u7406\u8868\u5355\u6570\u636e\u7684\u8def\u7531\u3002\u5f53\u7528\u6237\u63d0\u4ea4\u8868\u5355\u65f6\uff0cFlask\u4f1a\u4ecePOST\u8bf7\u6c42\u4e2d\u63d0\u53d6\u8868\u5355\u6570\u636e\uff0c\u5e76\u5c06\u5176\u8fd4\u56de\u7ed9\u7528\u6237\u3002<\/p>\n<\/p>\n
2\u3001\u4f7f\u7528Django\u5904\u7406\u8868\u5355\u6570\u636e<\/h2>\n<\/p>\n
Django\u662f\u4e00\u4e2a\u529f\u80fd\u5f3a\u5927\u7684Web\u6846\u67b6\uff0c\u5b83\u63d0\u4f9b\u4e86\u8bb8\u591a\u7528\u4e8e\u5904\u7406\u8868\u5355\u7684\u5185\u7f6e\u529f\u80fd\u3002\u901a\u8fc7Django\uff0c\u6211\u4eec\u53ef\u4ee5\u8f7b\u677e\u5730\u521b\u5efa\u548c\u5904\u7406\u8868\u5355\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u8be6\u7ec6\u7684\u793a\u4f8b\uff1a<\/p>\n<\/p>\n
from django.shortcuts import render<\/p>\nfrom django.http import HttpResponse<\/p>\n
from django import forms<\/p>\n
class UserForm(forms.Form):<\/p>\n
username = forms.CharField(label='Username', max_length=100)<\/p>\n
email = forms.EmailField(label='Email')<\/p>\n
age = forms.IntegerField(label='Age')<\/p>\n
def form_view(request):<\/p>\n
if request.method == 'POST':<\/p>\n
form = UserForm(request.POST)<\/p>\n
if form.is_valid():<\/p>\n
username = form.cleaned_data['username']<\/p>\n
email = form.cleaned_data['email']<\/p>\n
age = form.cleaned_data['age']<\/p>\n
return HttpResponse(f"Username: {username}, Email: {email}, Age: {age}")<\/p>\n
else:<\/p>\n
form = UserForm()<\/p>\n
return render(request, 'form.html', {'form': form})<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u5b9a\u4e49\u4e86\u4e00\u4e2aUserForm\u7c7b\uff0c\u5e76\u5728\u89c6\u56fe\u51fd\u6570form_view\u4e2d\u5904\u7406\u8868\u5355\u63d0\u4ea4\u3002\u5f53\u7528\u6237\u63d0\u4ea4\u8868\u5355\u65f6\uff0cDjango\u4f1a\u9a8c\u8bc1\u8868\u5355\u6570\u636e\uff0c\u5e76\u5c06\u5176\u8fd4\u56de\u7ed9\u7528\u6237\u3002<\/p>\n<\/p>\n
\u4e8c\u3001\u901a\u8fc7URL\u53c2\u6570\u4f20\u9012\u6570\u636e<\/strong><\/h2>\n\u9664\u4e86\u901a\u8fc7\u8868\u5355\u63d0\u4ea4\u6570\u636e\u5916\uff0c\u6211\u4eec\u8fd8\u53ef\u4ee5\u901a\u8fc7URL\u53c2\u6570\u4f20\u9012\u6570\u636e\u3002URL\u53c2\u6570\u901a\u5e38\u7528\u4e8eGET\u8bf7\u6c42\uff0c\u5b83\u4eec\u5728URL\u4e2d\u4ee5\u952e\u503c\u5bf9\u7684\u5f62\u5f0f\u51fa\u73b0\u3002\u4ee5\u4e0b\u662f\u5982\u4f55\u5728Flask\u548cDjango\u4e2d\u5904\u7406URL\u53c2\u6570\u7684\u793a\u4f8b\u3002<\/p>\n<\/p>\n
1\u3001\u4f7f\u7528Flask\u5904\u7406URL\u53c2\u6570<\/h2>\n<\/p>\n
\u5728Flask\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528request.args\u6765\u83b7\u53d6URL\u53c2\u6570\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u8be6\u7ec6\u7684\u793a\u4f8b\uff1a<\/p>\n<\/p>\n
from flask import Flask, request<\/p>\napp = Flask(__name__)<\/p>\n
@app.route('\/search')<\/p>\n
def search():<\/p>\n
query = request.args.get('q')<\/p>\n
page = request.args.get('page', default=1, type=int)<\/p>\n
return f"Query: {query}, Page: {page}"<\/p>\n
if __name__ == '__main__':<\/p>\n
app.run(debug=True)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u5b9a\u4e49\u4e86\u4e00\u4e2a\u540d\u4e3a\/search\u7684\u8def\u7531\uff0c\u5e76\u4f7f\u7528request.args.get\u65b9\u6cd5\u83b7\u53d6URL\u53c2\u6570q\u548cpage\u3002\u5f53\u7528\u6237\u8bbf\u95ee\u4f8b\u5982\/search?q=python&page=2\u7684URL\u65f6\uff0cFlask\u4f1a\u4eceURL\u4e2d\u63d0\u53d6\u8fd9\u4e9b\u53c2\u6570\uff0c\u5e76\u5c06\u5176\u8fd4\u56de\u7ed9\u7528\u6237\u3002<\/p>\n<\/p>\n
2\u3001\u4f7f\u7528Django\u5904\u7406URL\u53c2\u6570<\/h2>\n<\/p>\n
\u5728Django\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528request.GET\u6765\u83b7\u53d6URL\u53c2\u6570\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u8be6\u7ec6\u7684\u793a\u4f8b\uff1a<\/p>\n<\/p>\n
from django.http import HttpResponse<\/p>\ndef search_view(request):<\/p>\n
query = request.GET.get('q')<\/p>\n
page = request.GET.get('page', 1)<\/p>\n
return HttpResponse(f"Query: {query}, Page: {page}")<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u5b9a\u4e49\u4e86\u4e00\u4e2a\u540d\u4e3asearch_view\u7684\u89c6\u56fe\u51fd\u6570\uff0c\u5e76\u4f7f\u7528request.GET.get\u65b9\u6cd5\u83b7\u53d6URL\u53c2\u6570q\u548cpage\u3002\u5f53\u7528\u6237\u8bbf\u95ee\u4f8b\u5982\/search?q=python&page=2\u7684URL\u65f6\uff0cDjango\u4f1a\u4eceURL\u4e2d\u63d0\u53d6\u8fd9\u4e9b\u53c2\u6570\uff0c\u5e76\u5c06\u5176\u8fd4\u56de\u7ed9\u7528\u6237\u3002<\/p>\n<\/p>\n
\u4e09\u3001\u901a\u8fc7AJAX\u8bf7\u6c42\u83b7\u53d6\u6570\u636e<\/strong><\/h2>\nAJAX\uff08Asynchronous JavaScript and XML\uff09\u662f\u4e00\u79cd\u5728\u4e0d\u91cd\u65b0\u52a0\u8f7d\u9875\u9762\u7684\u60c5\u51b5\u4e0b\u4e0e\u670d\u52a1\u5668\u8fdb\u884c\u4ea4\u4e92\u7684\u6280\u672f\u3002\u901a\u8fc7AJAX\uff0c\u6211\u4eec\u53ef\u4ee5\u5728\u540e\u53f0\u53d1\u9001\u8bf7\u6c42\uff0c\u5e76\u5728\u524d\u7aef\u5904\u7406\u54cd\u5e94\u3002\u5728Python\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528Flask\u6216Django\u6846\u67b6\u6765\u5904\u7406AJAX\u8bf7\u6c42\u3002<\/p>\n<\/p>\n
1\u3001\u4f7f\u7528Flask\u5904\u7406AJAX\u8bf7\u6c42<\/h2>\n<\/p>\n
\u5728Flask\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528request.json\u6765\u83b7\u53d6AJAX\u8bf7\u6c42\u4e2d\u7684JSON\u6570\u636e\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u8be6\u7ec6\u7684\u793a\u4f8b\uff1a<\/p>\n<\/p>\n
from flask import Flask, request, jsonify<\/p>\napp = Flask(__name__)<\/p>\n
@app.route('\/submit', methods=['POST'])<\/p>\n
def submit_data():<\/p>\n
data = request.json<\/p>\n
username = data['username']<\/p>\n
email = data['email']<\/p>\n
age = data['age']<\/p>\n
return jsonify({"message": "Data received", "username": username, "email": email, "age": age})<\/p>\n
if __name__ == '__main__':<\/p>\n
app.run(debug=True)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u5b9a\u4e49\u4e86\u4e00\u4e2a\u540d\u4e3a\/submit\u7684\u8def\u7531\uff0c\u5e76\u4f7f\u7528request.json\u83b7\u53d6AJAX\u8bf7\u6c42\u4e2d\u7684JSON\u6570\u636e\u3002\u5f53\u7528\u6237\u901a\u8fc7AJAX\u8bf7\u6c42\u63d0\u4ea4\u6570\u636e\u65f6\uff0cFlask\u4f1a\u4ece\u8bf7\u6c42\u4e2d\u63d0\u53d6\u8fd9\u4e9b\u6570\u636e\uff0c\u5e76\u4ee5JSON\u683c\u5f0f\u8fd4\u56de\u7ed9\u7528\u6237\u3002<\/p>\n<\/p>\n
2\u3001\u4f7f\u7528Django\u5904\u7406AJAX\u8bf7\u6c42<\/h2>\n<\/p>\n
\u5728Django\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528request.body\u6765\u83b7\u53d6AJAX\u8bf7\u6c42\u4e2d\u7684JSON\u6570\u636e\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u8be6\u7ec6\u7684\u793a\u4f8b\uff1a<\/p>\n<\/p>\n
import json<\/p>\nfrom django.http import JsonResponse<\/p>\n
def submit_view(request):<\/p>\n
if request.method == 'POST':<\/p>\n
data = json.loads(request.body)<\/p>\n
username = data['username']<\/p>\n
email = data['email']<\/p>\n
age = data['age']<\/p>\n
return JsonResponse({"message": "Data received", "username": username, "email": email, "age": age})<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u5b9a\u4e49\u4e86\u4e00\u4e2a\u540d\u4e3asubmit_view\u7684\u89c6\u56fe\u51fd\u6570\uff0c\u5e76\u4f7f\u7528json.loads\u65b9\u6cd5\u89e3\u6790request.body\u4e2d\u7684JSON\u6570\u636e\u3002\u5f53\u7528\u6237\u901a\u8fc7AJAX\u8bf7\u6c42\u63d0\u4ea4\u6570\u636e\u65f6\uff0cDjango\u4f1a\u4ece\u8bf7\u6c42\u4e2d\u63d0\u53d6\u8fd9\u4e9b\u6570\u636e\uff0c\u5e76\u4ee5JSON\u683c\u5f0f\u8fd4\u56de\u7ed9\u7528\u6237\u3002<\/p>\n<\/p>\n
\u56db\u3001\u901a\u8fc7\u6587\u4ef6\u4e0a\u4f20\u83b7\u53d6\u6570\u636e<\/strong><\/h2>\n\u6587\u4ef6\u4e0a\u4f20\u662fWeb\u5e94\u7528\u4e2d\u5e38\u89c1\u7684\u529f\u80fd\u4e4b\u4e00\u3002\u7528\u6237\u53ef\u4ee5\u901a\u8fc7\u6587\u4ef6\u4e0a\u4f20\u529f\u80fd\u5c06\u6587\u4ef6\u63d0\u4ea4\u5230\u670d\u52a1\u5668\u3002\u4ee5\u4e0b\u662f\u5982\u4f55\u5728Flask\u548cDjango\u4e2d\u5904\u7406\u6587\u4ef6\u4e0a\u4f20\u7684\u793a\u4f8b\u3002<\/p>\n<\/p>\n
1\u3001\u4f7f\u7528Flask\u5904\u7406\u6587\u4ef6\u4e0a\u4f20<\/h2>\n<\/p>\n
\u5728Flask\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528request.files\u6765\u83b7\u53d6\u4e0a\u4f20\u7684\u6587\u4ef6\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u8be6\u7ec6\u7684\u793a\u4f8b\uff1a<\/p>\n<\/p>\n
from flask import Flask, request, render_template<\/p>\nimport os<\/p>\n
app = Flask(__name__)<\/p>\n
UPLOAD_FOLDER = 'uploads'<\/p>\n
app.config['UPLOAD_FOLDER'] = UPLOAD_FOLDER<\/p>\n
@app.route('\/')<\/p>\n
def upload_form():<\/p>\n
return render_template('upload_form.html')<\/p>\n
@app.route('\/upload', methods=['POST'])<\/p>\n
def upload_file():<\/p>\n
if 'file' not in request.files:<\/p>\n
return 'No file part'<\/p>\n
file = request.files['file']<\/p>\n
if file.filename == '':<\/p>\n
return 'No selected file'<\/p>\n
if file:<\/p>\n
file.save(os.path.join(app.config['UPLOAD_FOLDER'], file.filename))<\/p>\n
return 'File uploaded successfully'<\/p>\n
if __name__ == '__main__':<\/p>\n
app.run(debug=True)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u5b9a\u4e49\u4e86\u4e00\u4e2a\u540d\u4e3a\/upload\u7684\u8def\u7531\uff0c\u5e76\u4f7f\u7528request.files\u83b7\u53d6\u4e0a\u4f20\u7684\u6587\u4ef6\u3002\u5f53\u7528\u6237\u901a\u8fc7\u8868\u5355\u4e0a\u4f20\u6587\u4ef6\u65f6\uff0cFlask\u4f1a\u4ece\u8bf7\u6c42\u4e2d\u63d0\u53d6\u6587\u4ef6\uff0c\u5e76\u5c06\u5176\u4fdd\u5b58\u5230\u6307\u5b9a\u7684\u76ee\u5f55\u3002<\/p>\n<\/p>\n
2\u3001\u4f7f\u7528Django\u5904\u7406\u6587\u4ef6\u4e0a\u4f20<\/h2>\n<\/p>\n
\u5728Django\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528request.FILES\u6765\u83b7\u53d6\u4e0a\u4f20\u7684\u6587\u4ef6\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u8be6\u7ec6\u7684\u793a\u4f8b\uff1a<\/p>\n<\/p>\n
from django.shortcuts import render<\/p>\nfrom django.http import HttpResponse<\/p>\n
from django.core.files.storage import FileSystemStorage<\/p>\n
def upload_view(request):<\/p>\n
if request.method == 'POST' and request.FILES['file']:<\/p>\n
file = request.FILES['file']<\/p>\n
fs = FileSystemStorage()<\/p>\n
filename = fs.save(file.name, file)<\/p>\n
uploaded_file_url = fs.url(filename)<\/p>\n
return HttpResponse(f'File uploaded successfully: {uploaded_file_url}')<\/p>\n
return render(request, 'upload_form.html')<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u5b9a\u4e49\u4e86\u4e00\u4e2a\u540d\u4e3aupload_view\u7684\u89c6\u56fe\u51fd\u6570\uff0c\u5e76\u4f7f\u7528request.FILES\u83b7\u53d6\u4e0a\u4f20\u7684\u6587\u4ef6\u3002\u5f53\u7528\u6237\u901a\u8fc7\u8868\u5355\u4e0a\u4f20\u6587\u4ef6\u65f6\uff0cDjango\u4f1a\u4ece\u8bf7\u6c42\u4e2d\u63d0\u53d6\u6587\u4ef6\uff0c\u5e76\u5c06\u5176\u4fdd\u5b58\u5230\u6307\u5b9a\u7684\u76ee\u5f55\u3002<\/p>\n<\/p>\n
\u4e94\u3001\u901a\u8fc7API\u8c03\u7528\u83b7\u53d6\u6570\u636e<\/strong><\/h2>\nAPI\uff08Application Programming Interface\uff09\u662f\u4e00\u79cd\u5141\u8bb8\u4e0d\u540c\u8f6f\u4ef6\u7cfb\u7edf\u4e4b\u95f4\u8fdb\u884c\u901a\u4fe1\u7684\u673a\u5236\u3002\u5728Python\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528Flask\u6216Django\u6846\u67b6\u6765\u521b\u5efa\u548c\u5904\u7406API\u8c03\u7528\u3002<\/p>\n<\/p>\n
1\u3001\u4f7f\u7528Flask\u521b\u5efaAPI<\/h2>\n<\/p>\n
\u5728Flask\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528Flask-RESTful\u6269\u5c55\u6765\u521b\u5efaAPI\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u8be6\u7ec6\u7684\u793a\u4f8b\uff1a<\/p>\n<\/p>\n
from flask import Flask, request<\/p>\nfrom flask_restful import Resource, Api<\/p>\n
app = Flask(__name__)<\/p>\n
api = Api(app)<\/p>\n
class DataAPI(Resource):<\/p>\n
def get(self):<\/p>\n
query = request.args.get('q')<\/p>\n
return {'query': query}<\/p>\n
def post(self):<\/p>\n
data = request.json<\/p>\n
return {'data': data}<\/p>\n
api.add_resource(DataAPI, '\/data')<\/p>\n
if __name__ == '__main__':<\/p>\n
app.run(debug=True)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u5b9a\u4e49\u4e86\u4e00\u4e2a\u540d\u4e3aDataAPI\u7684\u8d44\u6e90\u7c7b\uff0c\u5e76\u5b9e\u73b0\u4e86GET\u548cPOST\u65b9\u6cd5\u3002\u5f53\u7528\u6237\u901a\u8fc7GET\u8bf7\u6c42\u8bbf\u95ee\/data\u65f6\uff0cFlask\u4f1a\u4eceURL\u53c2\u6570\u4e2d\u63d0\u53d6\u6570\u636e\uff0c\u5e76\u5c06\u5176\u8fd4\u56de\u7ed9\u7528\u6237\u3002\u5f53\u7528\u6237\u901a\u8fc7POST\u8bf7\u6c42\u63d0\u4ea4JSON\u6570\u636e\u65f6\uff0cFlask\u4f1a\u4ece\u8bf7\u6c42\u4e2d\u63d0\u53d6\u6570\u636e\uff0c\u5e76\u5c06\u5176\u8fd4\u56de\u7ed9\u7528\u6237\u3002<\/p>\n<\/p>\n
2\u3001\u4f7f\u7528Django\u521b\u5efaAPI<\/h2>\n<\/p>\n
\u5728Django\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528Django REST framework\u6765\u521b\u5efaAPI\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u8be6\u7ec6\u7684\u793a\u4f8b\uff1a<\/p>\n<\/p>\n
from rest_framework.views import APIView<\/p>\nfrom rest_framework.response import Response<\/p>\n
from django.urls import path<\/p>\n
class DataAPI(APIView):<\/p>\n
def get(self, request):<\/p>\n
query = request.query_params.get('q')<\/p>\n
return Response({'query': query})<\/p>\n
def post(self, request):<\/p>\n
data = request.data<\/p>\n
return Response({'data': data})<\/p>\n
urlpatterns = [<\/p>\n
path('data\/', DataAPI.as_view()),<\/p>\n
]<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u5b9a\u4e49\u4e86\u4e00\u4e2a\u540d\u4e3aDataAPI\u7684\u89c6\u56fe\u7c7b\uff0c\u5e76\u5b9e\u73b0\u4e86get\u548cpost\u65b9\u6cd5\u3002\u5f53\u7528\u6237\u901a\u8fc7GET\u8bf7\u6c42\u8bbf\u95ee\/data\/\u65f6\uff0cDjango\u4f1a\u4eceURL\u53c2\u6570\u4e2d\u63d0\u53d6\u6570\u636e\uff0c\u5e76\u5c06\u5176\u8fd4\u56de\u7ed9\u7528\u6237\u3002\u5f53\u7528\u6237\u901a\u8fc7POST\u8bf7\u6c42\u63d0\u4ea4JSON\u6570\u636e\u65f6\uff0cDjango\u4f1a\u4ece\u8bf7\u6c42\u4e2d\u63d0\u53d6\u6570\u636e\uff0c\u5e76\u5c06\u5176\u8fd4\u56de\u7ed9\u7528\u6237\u3002<\/p>\n<\/p>\n
\u516d\u3001\u901a\u8fc7WebSocket\u83b7\u53d6\u6570\u636e<\/strong><\/h2>\nWebSocket\u662f\u4e00\u79cd\u5728\u5ba2\u6237\u7aef\u548c\u670d\u52a1\u5668\u4e4b\u95f4\u5efa\u7acb\u957f\u8fde\u63a5\u7684\u901a\u4fe1\u534f\u8bae\uff0c\u9002\u7528\u4e8e\u5b9e\u65f6\u6570\u636e\u4f20\u8f93\u3002\u5728Python\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528Flask-SocketIO\u6216Django Channels\u6765\u5904\u7406WebSocket\u8fde\u63a5\u3002<\/p>\n<\/p>\n
1\u3001\u4f7f\u7528Flask-SocketIO\u5904\u7406WebSocket<\/h2>\n<\/p>\n
Flask-SocketIO\u662f\u4e00\u4e2aFlask\u6269\u5c55\uff0c\u7528\u4e8e\u5904\u7406WebSocket\u8fde\u63a5\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u8be6\u7ec6\u7684\u793a\u4f8b\uff1a<\/p>\n<\/p>\n
from flask import Flask, render_template<\/p>\nfrom flask_socketio import SocketIO, emit<\/p>\n
app = Flask(__name__)<\/p>\n
app.config['SECRET_KEY'] = 'secret!'<\/p>\n
socketio = SocketIO(app)<\/p>\n
@app.route('\/')<\/p>\n
def index():<\/p>\n
return render_template('index.html')<\/p>\n
@socketio.on('message')<\/p>\n
def handle_message(message):<\/p>\n
print('received message: ' + message)<\/p>\n
emit('response', {'data': 'Message received'})<\/p>\n
if __name__ == '__main__':<\/p>\n
socketio.run(app, debug=True)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u5b9a\u4e49\u4e86\u4e00\u4e2a\u540d\u4e3ahandle_message\u7684\u5904\u7406\u51fd\u6570\uff0c\u7528\u4e8e\u5904\u7406WebSocket\u6d88\u606f\u3002\u5f53\u5ba2\u6237\u7aef\u53d1\u9001\u6d88\u606f\u65f6\uff0cFlask-SocketIO\u4f1a\u8c03\u7528\u8be5\u51fd\u6570\uff0c\u5e76\u5c06\u6d88\u606f\u53d1\u9001\u56de\u5ba2\u6237\u7aef\u3002<\/p>\n<\/p>\n
2\u3001\u4f7f\u7528Django Channels\u5904\u7406WebSocket<\/h2>\n<\/p>\n
Django Channels\u662f\u4e00\u4e2a\u7528\u4e8e\u5904\u7406WebSocket\u8fde\u63a5\u7684Django\u6269\u5c55\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u8be6\u7ec6\u7684\u793a\u4f8b\uff1a<\/p>\n<\/p>\n
# routing.py<\/p>\nfrom channels.routing import ProtocolTypeRouter, URLRouter<\/p>\n
from channels.auth import AuthMiddlewareStack<\/p>\n
from django.urls import path<\/p>\n
from .consumers import ChatConsumer<\/p>\n
application = ProtocolTypeRouter({<\/p>\n
'websocket': AuthMiddlewareStack(<\/p>\n
URLRouter([<\/p>\n
path('ws\/chat\/', ChatConsumer.as_asgi()),<\/p>\n
])<\/p>\n
),<\/p>\n
})<\/p>\n
consumers.py<\/strong><\/h2>\nfrom channels.generic.websocket import WebsocketConsumer<\/p>\n
import json<\/p>\n
class ChatConsumer(WebsocketConsumer):<\/p>\n
def connect(self):<\/p>\n
self.accept()<\/p>\n
def disconnect(self, close_code):<\/p>\n
pass<\/p>\n
def receive(self, text_data):<\/p>\n
text_data_json = json.loads(text_data)<\/p>\n
message = text_data_json['message']<\/p>\n
self.send(text_data=json.dumps({'response': 'Message received'}))<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u5b9a\u4e49\u4e86\u4e00\u4e2a\u540d\u4e3aChatConsumer\u7684\u6d88\u8d39\u8005\u7c7b\uff0c\u7528\u4e8e\u5904\u7406WebSocket\u8fde\u63a5\u548c\u6d88\u606f\u3002\u5f53\u5ba2\u6237\u7aef\u53d1\u9001\u6d88\u606f\u65f6\uff0cDjango Channels\u4f1a\u8c03\u7528receive\u65b9\u6cd5\uff0c\u5e76\u5c06\u6d88\u606f\u53d1\u9001\u56de\u5ba2\u6237\u7aef\u3002<\/p>\n<\/p>\n
\u4e03\u3001\u901a\u8fc7\u591a\u90e8\u5206\u8868\u5355\u6570\u636e\u83b7\u53d6\u6570\u636e<\/strong><\/h2>\n\u591a\u90e8\u5206\u8868\u5355\u6570\u636e\u901a\u5e38\u7528\u4e8e\u4e0a\u4f20\u6587\u4ef6\u548c\u53d1\u9001\u5176\u4ed6\u8868\u5355\u6570\u636e\u3002\u5728Python\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528Flask\u6216Django\u6846\u67b6\u6765\u5904\u7406\u591a\u90e8\u5206\u8868\u5355\u6570\u636e\u3002<\/p>\n<\/p>\n
1\u3001\u4f7f\u7528Flask\u5904\u7406\u591a\u90e8\u5206\u8868\u5355\u6570\u636e<\/h2>\n<\/p>\n
\u5728Flask\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528request.form\u548crequest.files\u6765\u83b7\u53d6\u591a\u90e8\u5206\u8868\u5355\u6570\u636e\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u8be6\u7ec6\u7684\u793a\u4f8b\uff1a<\/p>\n<\/p>\n
from flask import Flask, request, render_template<\/p>\nimport os<\/p>\n
app = Flask(__name__)<\/p>\n
UPLOAD_FOLDER = 'uploads'<\/p>\n
app.config['UPLOAD_FOLDER'] = UPLOAD_FOLDER<\/p>\n
@app.route('\/')<\/p>\n
def upload_form():<\/p>\n
return render_template('upload_form.html')<\/p>\n
@app.route('\/upload', methods=['POST'])<\/p>\n
def upload_file():<\/p>\n
if 'file' not in request.files:<\/p>\n
return 'No file part'<\/p>\n
file = request.files['file']<\/p>\n
username = request.form['username']<\/p>\n
if file.filename == '':<\/p>\n
return 'No selected file'<\/p>\n
if file:<\/p>\n
file.save(os.path.join(app.config['UPLOAD_FOLDER'], file.filename))<\/p>\n
return f'File uploaded successfully by {username}'<\/p>\n
if __name__ == '__main__':<\/p>\n
app.run(debug=True)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u5b9a\u4e49\u4e86\u4e00\u4e2a\u540d\u4e3a\/upload\u7684\u8def\u7531\uff0c\u5e76\u4f7f\u7528request.form\u548crequest.files\u83b7\u53d6\u591a\u90e8\u5206\u8868\u5355\u6570\u636e\u3002\u5f53\u7528\u6237\u901a\u8fc7\u8868\u5355\u4e0a\u4f20\u6587\u4ef6\u548c\u63d0\u4ea4\u5176\u4ed6\u6570\u636e\u65f6\uff0cFlask\u4f1a\u4ece\u8bf7\u6c42\u4e2d\u63d0\u53d6\u8fd9\u4e9b\u6570\u636e\uff0c\u5e76\u5c06\u5176\u8fd4\u56de\u7ed9\u7528\u6237\u3002<\/p>\n<\/p>\n
2\u3001\u4f7f\u7528Django\u5904\u7406\u591a\u90e8\u5206\u8868\u5355\u6570\u636e<\/h2>\n<\/p>\n
\u5728Django\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528request.POST\u548crequest.FILES\u6765\u83b7\u53d6\u591a\u90e8\u5206\u8868\u5355\u6570\u636e\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u8be6\u7ec6\u7684\u793a\u4f8b\uff1a<\/p>\n<\/p>\n
from django.shortcuts import render<\/p>\nfrom django.http import HttpResponse<\/p>\n
from django.core.files.storage import FileSystemStorage<\/p>\n
def upload_view(request):<\/p>\n
if request.method == 'POST' and request.FILES['file']:<\/p>\n
file = request.FILES['file']<\/p>\n
username = request.POST['username']<\/p>\n
fs = FileSystemStorage()<\/p>\n
filename = fs.save(file.name, file)<\/p>\n
uploaded_file_url = fs.url(filename)<\/p>\n
return HttpResponse(f'File uploaded successfully by {username}: {uploaded_file_url}')<\/p>\n
return render(request, 'upload_form.html')<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u5b9a\u4e49\u4e86\u4e00\u4e2a\u540d\u4e3aupload_view\u7684\u89c6\u56fe\u51fd\u6570\uff0c\u5e76\u4f7f\u7528request.POST\u548crequest.FILES\u83b7\u53d6\u591a\u90e8\u5206\u8868\u5355\u6570\u636e\u3002\u5f53\u7528\u6237\u901a\u8fc7\u8868\u5355\u4e0a\u4f20\u6587\u4ef6\u548c\u63d0\u4ea4\u5176\u4ed6\u6570\u636e\u65f6\uff0cDjango\u4f1a\u4ece\u8bf7\u6c42\u4e2d\u63d0\u53d6\u8fd9\u4e9b\u6570\u636e\uff0c\u5e76\u5c06\u5176\u8fd4\u56de\u7ed9\u7528\u6237\u3002<\/p>\n<\/p>\n
\u516b\u3001\u901a\u8fc7Cookies\u83b7\u53d6\u6570\u636e<\/strong><\/h2>\nCookies\u662f\u5b58\u50a8\u5728\u5ba2\u6237\u7aef\u7684\u4e00\u5c0f\u6bb5\u6570\u636e\uff0c\u53ef\u4ee5\u7528\u4e8e\u5728\u8bf7\u6c42\u4e4b\u95f4\u4fdd\u6301\u72b6\u6001\u3002\u5728Python\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528Flask\u6216Django\u6846\u67b6\u6765\u5904\u7406Cookies\u3002<\/p>\n<\/p>\n
1\u3001\u4f7f\u7528Flask\u5904\u7406Cookies<\/h2>\n<\/p>\n
\u5728Flask\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528request.cookies\u83b7\u53d6Cookies\uff0c\u5e76\u4f7f\u7528response.set_cookie\u8bbe\u7f6eCookies\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u8be6\u7ec6\u7684\u793a\u4f8b\uff1a<\/p>\n<\/p>\n
from flask import Flask, request, make_response<\/p>\napp = Flask(__name__)<\/p>\n
@app.route('\/')<\/p>\n
def index():<\/p>\n
username = request.cookies.get('username')<\/p>\n
return f'Hello {username}' if username else 'Hello Guest'<\/p>\n
@app.route('\/set_cookie')<\/p>\n
def set_cookie():<\/p>\n
resp = make_response('Setting cookie')<\/p>\n
resp.set_cookie('username', 'John Doe')<\/p>\n
return resp<\/p>\n
if __name__ == '__main__':<\/p>\n
app.run(debug=True)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u5b9a\u4e49\u4e86\u4e00\u4e2a\u540d\u4e3aindex\u7684\u8def\u7531\uff0c\u7528\u4e8e\u83b7\u53d6Cookies\uff0c\u5e76\u5b9a\u4e49\u4e86\u4e00\u4e2a\u540d\u4e3aset_cookie\u7684\u8def<\/p>\n<\/p>\n
\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n \u5982\u4f55\u5728Python\u4e2d\u83b7\u53d6\u63d0\u4ea4\u7684\u6570\u636e\uff1f<\/strong>
\u5728Python\u4e2d\uff0c\u83b7\u53d6\u63d0\u4ea4\u7684\u6570\u636e\u901a\u5e38\u6d89\u53ca\u4f7f\u7528Web\u6846\u67b6\uff0c\u5982Flask\u6216Django\u3002\u4ee5Flask\u4e3a\u4f8b\uff0c\u53ef\u4ee5\u901a\u8fc7request<\/code>\u5bf9\u8c61\u6765\u8bbf\u95ee\u63d0\u4ea4\u7684\u6570\u636e\u3002\u53ef\u4ee5\u4f7f\u7528request.form<\/code>\u83b7\u53d6POST\u8bf7\u6c42\u4e2d\u7684\u8868\u5355\u6570\u636e\uff0c\u6216\u8005\u4f7f\u7528request.args<\/code>\u83b7\u53d6GET\u8bf7\u6c42\u4e2d\u7684\u67e5\u8be2\u53c2\u6570\u3002\u4f8b\u5982\uff0cdata = request.form['key']<\/code>\u53ef\u4ee5\u63d0\u53d6\u8868\u5355\u4e2d\u540d\u4e3akey<\/code>\u7684\u6570\u636e\u3002<\/p>\n\u5728\u5904\u7406\u63d0\u4ea4\u6570\u636e\u65f6\uff0c\u5982\u4f55\u786e\u4fdd\u6570\u636e\u7684\u5b89\u5168\u6027\uff1f<\/strong>
\u786e\u4fdd\u6570\u636e\u5b89\u5168\u6027\u975e\u5e38\u91cd\u8981\uff0c\u5c24\u5176\u662f\u5728\u5904\u7406\u7528\u6237\u8f93\u5165\u65f6\u3002\u53ef\u4ee5\u901a\u8fc7\u6570\u636e\u9a8c\u8bc1\u548c\u6e05\u7406\u6765\u9632\u6b62SQL\u6ce8\u5165\u548c\u8de8\u7ad9\u811a\u672c\u653b\u51fb\u3002\u4f7f\u7528Flask-WTF\u7b49\u5e93\u53ef\u4ee5\u7b80\u5316\u8868\u5355\u9a8c\u8bc1\u8fc7\u7a0b\uff0c\u786e\u4fdd\u8f93\u5165\u6570\u636e\u7b26\u5408\u9884\u671f\u683c\u5f0f\u3002\u540c\u65f6\uff0c\u4f7f\u7528\u53c2\u6570\u5316\u67e5\u8be2\u6765\u5904\u7406\u6570\u636e\u5e93\u64cd\u4f5c\u4e5f\u662f\u4e00\u79cd\u6709\u6548\u7684\u5b89\u5168\u63aa\u65bd\u3002<\/p>\n\u5982\u4f55\u5728Python\u4e2d\u5904\u7406\u4e0d\u540c\u683c\u5f0f\u7684\u63d0\u4ea4\u6570\u636e\uff1f<\/strong>
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