我试图使用 html 和 python 创建一个简单的表单，我发现 Flask 库对此很有帮助，但似乎我做错了什么。
文件：
login.html<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
</head>
<body>
<!-- HTML template for the login form -->
<form method="post" action="/login">
<label for="username">Username:</label><br>
<input type="text" id="username" name="username"><br>
<label for="password">Password:</label><br>
<input type="password" id="password" name="password"><br><br>
<input type="submit" value="Submit">
</form>
</body>
</html>
文件：
app.pyfrom flask import Flask, render_template, request
app = Flask(__name__)
@app.route('/')
def home():
return render_template('login.html')
@app.route('/login', methods=['POST'])
def login():
# Get the username and password from the form submission
username = request.form['username']
password = request.form['password']
# Validate the username and password
if username == 'admin' and password == 'secret':
return 'Logged in successfully'
else:
return 'Invalid username or password'
if __name__ == '__main__':
app.run(debug=True)
使用我的 vscode 终端，输入
python app.py127.0.0.1 - - [30/Dec/2022 01:22:00] "GET / HTTP/1.1" 500 -
Traceback (most recent call last):
File "C:\Users\itzfr\AppData\Local\Programs\Python\Python311\Lib\site-packages\flask\app.py", line 2548, in __call__
return self.wsgi_app(environ, start_response)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\itzfr\AppData\Local\Programs\Python\Python311\Lib\site-packages\flask\app.py", line 2528, in wsgi_app
response = self.handle_exception(e)
^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\itzfr\AppData\Local\Programs\Python\Python311\Lib\site-packages\flask\app.py", line 2525, in wsgi_app
response = self.full_dispatch_request()
^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\itzfr\AppData\Local\Programs\Python\Python311\Lib\site-packages\flask\app.py", line 1822, in full_dispatch_request
rv = self.handle_user_exception(e)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\itzfr\AppData\Local\Programs\Python\Python311\Lib\site-packages\flask\app.py", line 1820, in full_dispatch_request
rv = self.dispatch_request()
^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\itzfr\AppData\Local\Programs\Python\Python311\Lib\site-packages\flask\app.py", line 1796, in dispatch_request
return self.ensure_sync(self.view_functions[rule.endpoint])(**view_args)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\coding\chatgpt-testing\app.py", line 7, in home
return render_template('login.html')
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
raise TemplateNotFound(template)
jinja2.exceptions.TemplateNotFound: login.html
127.0.0.1 - - [30/Dec/2022 01:22:00] "GET /?__debugger__=yes&cmd=resource&f=style.css HTTP/1.1" 200 -
127.0.0.1 - - [30/Dec/2022 01:22:00] "GET /?__debugger__=yes&cmd=resource&f=debugger.js HTTP/1.1" 200 -
127.0.0.1 - - [30/Dec/2022 01:22:00] "GET /?__debugger__=yes&cmd=resource&f=console.png HTTP/1.1" 200 -
127.0.0.1 - - [30/Dec/2022 01:22:01] "GET /?__debugger__=yes&cmd=resource&f=console.png HTTP/1.1" 304 -
127.0.0.1 - - [30/Dec/2022 01:22:02] "GET /null HTTP/1.1" 404 -
127.0.0.1 - - [30/Dec/2022 01:22:02] "GET /null HTTP/1.1" 404 -
如何解决这个问题？
在您的工作存储库中，创建一个名为 templates 的文件夹并将 html 文件复制到其中。