index.py:
```
from flask import Flask, redirect, url_for, render_template, request
from flask_cors import CORS
app = Flask(__name__)
# r'/*' 是通配符，让本服务器所有的URL 都允许跨域请求
CORS(app, resources=r'/*')
@app.route("/")
def home():
return render_template("index.html")
@app.route("/login", methods=["POST", "GET"])
def login():
if request.method == "POST":
user = request.form["nm"]
return redirect(url_for("user", usr=user))
else:
return render_template("login.html")
@app.route("/<usr>")
def user(usr):
return f"Get data: {usr}"
if __name__ == "__main__":
app.run(debug=True)
```
templates/index.html:
```
{% block title %}Login Page{% endblock %}
{% block content %}
<form action="/login" method="post">
<p>Name:</p>
<p><input type="text" name="nm" ></p>
<p><input type="submit" value="submit" ></p>
</form>
{% endblock %}
```
在python控制臺或者cmd上運行python文件
