Flask-mail

安装

(venv) $ pip install flask-mail

配置信息

FLASK-MAIL SMTP服务器配置信息

服务器名、地址与端口

配置使用

import os
# ...
from flask_mail import Mail
app.config['MAIL_SERVER'] = 'smtp.126.com'
app.config['MAIL_PORT'] = 25
# 开源作品,账号密码千万不要直接写入脚本
app.config['MAIL_USERNAME'] = os.environ.get("mail_username")
app.config['MAIL_PASSWORD'] = os.environ.get("mail_password")
# Flask_Mail初始化
mail = Mail(app)

一次性环境变量设置

(venv) set MAIL_USERNAME = {username}

在python shell中发送

注意，Flask-Mail 中的 send() 函数使用 current_app，因此要在激活的程序上下文中执行。

(venv) E:\blog>set FLASK_APP=hello.py
from flask_mail import Message
from hello import mail
mail_title = "test mail"
sender = "sender@126.com"
recipients = ["recipient1@163.com"]
msg = Message(mail_title, sender=sender, recipients=recipients)
msg.body = "test body"
msg.html = "<h1> html </h1>"
with app.app_context():
    mail.send(msg)

在应用中集成功能

定义发邮件函数，在视图函数中调用

#...
# 配置邮件信息
app.config['FLASKY_ADMIN'] = os.environ.get('FLASKY_ADMIN')
app.config['FLASKY_MAIL_SUBJECT_PREFIX'] = '[Flasky]'
app.config['FLASKY_MAIL_SENDER'] = 'Flasky Admin <xxx@163.com>'
def send_main(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)
@app.route('/', methods=['POST', 'GET'])
def index():
    form = NameForm()
    if form.validate_on_submit():
        user = User.query.filter_by(username=form.name.data).first()
        if not user:
            user = User(username=form.name.data, password='123456')
            db.session.add(user)
            db.session.commit()
            session['known'] = False
            send_mail(form.name.data)
        else:
            session['known'] = True
        session['name'] = request.form.get("name")
        form.name.data = ""
        return redirect(url_for('index'))
    return render_template('index.html', form=form, name=session.get('name'))

异步发送邮件

在处理mail.send函数时停滞了几秒钟，为了在处理请求过程中避免不必要的延迟，将发送电子邮件函数移到后台线程中

#...
# 配置邮件信息
app.config['FLASKY_ADMIN'] = os.environ.get('FLASKY_ADMIN')
app.config['FLASKY_MAIL_SUBJECT_PREFIX'] = '[Flasky]'
app.config['FLASKY_MAIL_SENDER'] = 'Flasky Admin <xxx@163.com>'
def send_main(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)
    thr = Thread(target=send_async_email(),  args=[app, msg])
    thr.start()
    return thr
def send_async_email(app, msg):
    with app.app_context():
        mail.send(msg)
@app.route('/', methods=['POST', 'GET'])
def index():
    form = NameForm()
    if form.validate_on_submit():
        user = User.query.filter_by(username=form.name.data).first()
        if not user:
            user = User(username=form.name.data, password='123456')
            db.session.add(user)
            db.session.commit()
            session['known'] = False
            send_async_email()
        else:
            session['known'] = True
        session['name'] = request.form.get("name")
        form.name.data = ""
        return redirect(url_for('index'))
    return render_template('index.html', form=form, name=session.get('name'))