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记踩坑--Flask Web开发:第六章的电子邮件 ----[Errno 11004] getaddrinfo failed

时间:2018-12-22 20:01:14      阅读:628      评论:0      收藏:0      [点我收藏+]

标签:授权   scrip   cati   变量   als   pri   ssa   string   pla   

必须要记录下踩过的坑,一来,为后来者铺路,二来,实在摔得疼,提醒自己写代码要谨小慎微。

[Errno 11004] getaddrinfo failed

1.先排除邮箱账号和授权码的错误

测试如下代码:(注:邮箱号和授权码换成你自己的)

# -*- coding: utf-8 -*-

from flask import Flask
from flask_mail import Mail, Message

app = Flask(__name__)

app.config[MAIL_SERVER] = smtp.qq.com  # 邮件服务器地址
app.config[MAIL_PORT] = 25  # 邮件服务器端口
app.config[MAIL_USE_TLS] = True  # 启用 TLS
app.config[MAIL_USERNAME] = 987654321@qq.com
app.config[MAIL_PASSWORD] = nxvxvzbbbbbbbcec

mail = Mail(app)


@app.route(/)
def index():
    msg = Message(恭喜!排除授权码和账号的问题!, sender=987654321@qq.com, recipients=[987654321@qq.com])
    msg.html = <b>Hello Web</b>
    mail.send(msg)
    return <h1>OK!</h1>


if __name__ == __main__:
    app.run(host=127.0.0.1, debug=True)

 

2.再排查环境变量是否设置正确

打开你当前文件的虚拟环境,设置如下代码

(venv) $ set MAIL_USERNAME = my_email@qq.com
(venv) $ set MAIL_PASSWORD = password

 注意::环境变量配置中不加引号!!不加引号!!不加引号!!

 

程序中看是否成功get到

print(os.environ.get(‘MAIL_USERNAME‘))
print(os.environ.get(‘MAIL_PASSWORD‘))

 

能get到后,就可以在程序中获取环境变量的配置啦!

app.config[MAIL_USERNAME] = os.environ.get(MAIL_USERNAME) 

app.config[MAIL_PASSWORD] = os.environ.get(MAIL_PASSWORD) 

 

3.在程序中集成发送电子邮件功能

import os
from flask import Flask, render_template, session, url_for, redirect
from flask_bootstrap import Bootstrap
from flask_wtf import FlaskForm
from wtforms import StringField, SubmitField
from wtforms.validators import DataRequired
from flask_sqlalchemy import SQLAlchemy
from flask_script import Manager
from flask_script import Shell
from flask_migrate import Migrate, MigrateCommand
from flask_mail import Mail, Message

basedir = os.path.abspath(os.path.dirname(__file__))

app = Flask(__name__)
app.config[SECRET_KEY] = hard to guess string
app.config[SQLALCHEMY_DATABASE_URI] =     sqlite:/// + os.path.join(basedir, data.sqlite)
app.config[SQLALCHEMY_COMMMIT_ON_TEARDOWN] = True
app.config[SQLALCHEMY_TRACK_MODIFICATIONS] = True

app.config[MAIL_SERVER] = smtp.qq.com
app.config[MAIL_PORT] = 25
app.config[MAIL_USE_TLS] = True
app.config[MAIL_USERNAME] = os.environ.get(MAIL_USERNAME)
print(os.environ.get(MAIL_USERNAME))
app.config[MAIL_PASSWORD] = os.environ.get(MAIL_PASSWORD)
print(os.environ.get(MAIL_PASSWORD))
app.config[FLASKY_MAIL_SUBJECT_PREFIX] = [Flasky]
app.config[FLASKY_MAIL_SENDER] = 123456789@qq.com  # 发送者邮箱
app.config[FLASKY_ADMIN] = os.environ.get(FLASKY_ADMIN)  # 接收者邮箱
print(os.environ.get(FLASKY_ADMIN))

bootstrap = Bootstrap(app)
db = SQLAlchemy(app)
manager = Manager(app)
migrate = Migrate(app, db)
mail = Mail(app)


class NameForm(FlaskForm):
    name = StringField(What is your name?, validators=[DataRequired()])
    submit = SubmitField(Submit)


class Role(db.Model):
    __tablename__ = roles
    id = db.Column(db.Integer, primary_key=True)
    name = db.Column(db.String(64), unique=True)
    users = db.relationship(User, backref=role, lazy=dynamic)

    def __repr__(self):
        return <Role: %s> % self.name


class User(db.Model):
    __tablename__ = users
    id = db.Column(db.Integer, primary_key=True)
    username = db.Column(db.String(64), unique=True, index=True)
    role_id = db.Column(db.Integer, db.ForeignKey(roles.id))

    def __repr__(self):
        return <User: %s> % self.username


def send_email(to, subject, template, **kwargs):
    msg = Message(app.config[FLASKY_MAIL_SUBJECT_PREFIX] +   + subject,
                  sender=app.config[FLASKY_MAIL_SENDER], recipients=[to])
    msg.body = render_template(template + .txt, **kwargs)
    msg.html = render_template(template + .html, **kwargs)
    mail.send(msg)


def make_shell_context():
    return dict(app=app, db=db, User=User, Role=Role)


manager.add_command(shell, Shell(make_context=make_shell_context))  # 集成python shell
manager.add_command(db, MigrateCommand)  # 创建数据库迁移


@app.route(/, methods=[GET, POST])
def index():
    form = NameForm()

    if form.validate_on_submit():
        user = User.query.filter_by(username=form.name.data).first()
        if user is None:
            new_user = User(username=form.name.data)
            db.session.add(new_user)
            db.session.commit()
            session[known] = False  # 新用户(数据库中没查到你)
            if app.config[FLASKY_ADMIN]:
                send_email(app.config[FLASKY_ADMIN], New User,
                           mail/new_user, user=new_user)
        else:
            session[known] = True  # 老用户
        session[name] = form.name.data
        form.name.data = ‘‘
        return redirect(url_for(index))
    return render_template(index.html, form=form, name=session.get(name),
                           known=session.get(known, False))


@app.route(/user/<name>)
def user(name):
    return render_template(user.html, name=name)


@app.errorhandler(404)
def page_not_found(e):
    return render_template(404.html), 404


@app.errorhandler(500)
def internal_server_error(e):
    return render_template(500.html), 500


if __name__ == __main__:
    # manager.run()
    app.run(host=127.0.0.1, port=5200, debug=True)

 

4. 创建模板

技术分享图片

 

 new_user.html:

User {{ user.username }} has joined.

new_user.txt:

User <b>{{ user.username }}</b> has joined.

  

 5. 跑起来

(env) C:\Users\Administrator\PycharmProjects\lagou\jokertion_blog>python hello.py shell

 

注意:记得先在虚拟环境(venv)中设置好三个环境变量:

set MAIL_USERNAME=123456789@qq.com

set MAIL_PASSWORD=xxxxxxxxxxxxxx

set FLASKY_ADMIN=123456789@qq.com

  

 6.大功告成!新增功能:新添用户,自动发送邮件提醒管理员。

技术分享图片

技术分享图片

 

记踩坑--Flask Web开发:第六章的电子邮件 ----[Errno 11004] getaddrinfo failed

标签:授权   scrip   cati   变量   als   pri   ssa   string   pla   

原文:https://www.cnblogs.com/liangmingshen/p/10162153.html

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