Question

ontariocourts311.ca左列中的列表以及图像下方的页面正文间歇性地无法显示（通过刷新页面进行“固定”）。我是Noob，并且尝试过各种版本的return语句，但均未成功。

错误：

2019-06-05 16:39:26,765: Exception on / [GET]
Traceback (most recent call last):
  File "flask/app.py", line 2311, in wsgi_app
    response = self.full_dispatch_request()
  File "flask/app.py", line 1834, in full_dispatch_request
    rv = self.handle_user_exception(e)
  File "flask/app.py", line 1737, in handle_user_exception
    reraise(exc_type, exc_value, tb)
  File "flask/_compat.py", line 36, in reraise
    raise value
  File "flask/app.py", line 1832, in full_dispatch_request
    rv = self.dispatch_request()
  File "flask/app.py", line 1818, in dispatch_request
    return self.view_functions[rule.endpoint](**req.view_args)
  File "/home/mlesage/mysite/Court/application.py", line 40, in home
    complaints = db.execute("SELECT User_Complaint, Date, Review_Title FROM Posts")
  File "cs50/sql.py", line 224, in execute
    raise e
RuntimeError: (MySQLdb._exceptions.OperationalError) (2013, 'Lost connection to MySQL server during query')
[SQL: SELECT User_Complaint, Date, Review_Title FROM Posts]
(Background on this error at: http://sqlalche.me/e/e3q8)

from cs50 import SQL
from helpers import contacts # (a list of people stored in helpers)

# Configure db to mySQL database
db = SQL("mysql://user.mysql.pythonanywhere-services.com:3306/user$User_Reviews")
#timeout = db.execute(con.query('SET GLOBAL connect_timeout=6000'))

@app.route("/", methods=["GET", "POST"])
def home():
    reviews = [list of reviews, pulled from db, for display on page] 

    if request.method == "POST": 

        if User_Complaint != None:
            return redirect ('/')
            #return redirect(url_for('home', reviews = reviews, contacts = contacts))
        else:
            return render_template("home.html", reviews = reviews, contacts = contacts)

    # GETS METHOD
    else: 
        return render_template("home.html", reviews = reviews, contacts = contacts)

无论使用GETS还是POST方法，页面元素都应显示一致（即，左侧人员列表，页面中央和文本框的评论）。

Answer 1

问题似乎与MySQL没有可用的开放连接有关，它似乎是通过对以下行稍加修改而解决的：

db = SQL（“ mysql：// user：password.mysql.pythonanywhere-services.com：3306 / user $ User_Reviews”，pool_recycle = 280）

如何解决此Gets服务器错误，这会导致显示问题？

1 个答案: