我正在学习编写python flask代码。 我的烧瓶应用程序使用owm Web服务器可以。但是,使用nginx + uwsgi + flask部署时,uwsgi错误:
[2018-09-05 18:28:59,295] ERROR in app: Exception on /editor [GET]
Traceback (most recent call last):
File "/usr/lib64/python3.6/site-packages/flask/app.py", line 2292, in wsgi_app
response = self.full_dispatch_request()
File "/usr/lib64/python3.6/site-packages/flask/app.py", line 1816, in full_dispatch_request
return self.finalize_request(rv)
File "/usr/lib64/python3.6/site-packages/flask/app.py", line 1831, in finalize_request
response = self.make_response(rv)
File "/usr/lib64/python3.6/site-packages/flask/app.py", line 1957, in make_response
'The view function did not return a valid response. The'
TypeError: The view function did not return a valid response. The function either returned None or ended without a return statement.
我的flask代码是flasker示例。代码如下:
# coding=utf-8
"""
~~~~~~
A microblog example application written as Flask tutorial with
Flask and sqlite3.
:copyright: (c) 2010 by Armin Ronacher.
:license: BSD, see LICENSE for more details.
"""
from sqlite3 import dbapi2 as sqlite3
from flask import Flask, request, session, g, redirect, url_for, abort, \
render_template, flash
# create our little application :)
app = Flask(__name__)
# Load default config and override config from an environment variable
app.config.update(dict(
DATABASE='/tmp/flaskr.db',
DEBUG=False,
SECRET_KEY='development key',
USERNAME='admin',
PASSWORD='default'
))
app.config.from_envvar('FLASKR_SETTINGS', silent=True)
def connect_db():
print ("connect db")
"""Connects to the specific database."""
rv = sqlite3.connect(app.config['DATABASE'])
rv.row_factory = sqlite3.Row
return rv
def init_db():
"""Creates the database tables."""
with app.app_context():
db = get_db()
with app.open_resource('schema.sql', mode='r') as f:
db.cursor().executescript(f.read())
print("excute sql")
db.commit()
def get_db():
"""Opens a new database connection if there is none yet for the
current application context.
"""
if not hasattr(g, 'sqlite_db'):
g.sqlite_db = connect_db()
return g.sqlite_db
@app.teardown_appcontext
def close_db(error):
"""Closes the database again at the end of the request."""
if hasattr(g, 'sqlite_db'):
g.sqlite_db.close()
@app.route('/')
def show_entries():
db = get_db()
cur = db.execute('select title, text from entries order by id desc')
entries = cur.fetchall()
return render_template('show_entries.html', entries=entries)
@app.route('/logout')
def logout():
session.pop('logged_in', None)
flash('You were logged out')
return redirect(url_for('show_entries'))
@app.route('/editor')
def editor():
print ("editor")
return render_template('index.html')
if __name__ == '__main__':
init_db()
app.run(host='0.0.0.0')
其他视图功能还可以,只有高级视图功能出错。但只运行烧瓶是可以的。添加nginx和uwsgi是错误的。
答案 0 :(得分:0)
我重新启动uswgi,编辑器视图功能起作用了。可能是因为uwsgi无法检测到python代码的更改。