使用Flask-Mail提供電子郵件支持

pip install flask-mail

Flask-Mail連接到簡單郵件傳輸協(xié)議（SMTP）服務(wù)器昵济，并把郵件交給這個服務(wù)器發(fā)送。如果不進(jìn)行配置传于，F(xiàn)lask-Mail會連接localhost上的端口25醉顽，無需驗證即可發(fā)送電子郵件游添。

Flask-Mail SMTP服務(wù)器的配置

配置Flask-Mail使用163Mail

from flask import Flask
from flask_mail import Mail, Message

app = Flask(__name__)
app.config['MAIL_SERVER'] = 'smtp.163.com'  # 電子郵件服務(wù)器的主機名或IP地址
app.config['MAIL_PORT'] = '25'  # 電子郵件服務(wù)器的端口
app.config['MAIL_USE_TLS'] = True  # 啟用傳輸層安全
app.config['MAIL_USERNAME'] = ''xxxxxxx  # 郵件賬戶用戶名
app.config['MAIL_PASSWORD'] = 'xxxxxxx'  # 郵件賬戶的密碼

mail = Mail(app)


@app.route('/')
def index():
    msg = Message('主題',sender= ''xxxxxxx',recipients=['yyyyyyyyyyyyy'])
    msg.body = '文本 body'
    msg.html = '<b>HTML</b> body'
    mail.send(msg)

    return '<h1>郵件發(fā)送成功</h1>'


if __name__ == '__main__':
    app.run(debug=True)

電子郵件支持

from flask_mail import Mail, Message

app.config['FLASKY_MAIL_SUBJECT_PREFIX'] = '[Flasky]'
app.config['FLASKY_MAIL_SENDER'] = 'Flasky Admin <xxxxxx>'

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)

兩個程序特定配置項唆涝，分別定義郵件主題的前綴和發(fā)件人地址廊酣。send_email函數(shù)的參數(shù)分別為收件人地址赏枚、主題、渲染郵件正文的模板和關(guān)鍵字參數(shù)列表凡辱。指定模板時不能包含擴展名，這樣才能使用兩個模板分別渲染純文本正文和富文本正文透乾。

電子郵件示例

app.config['FLASKT_ADMIN'] = 'yyyyyyy'

@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:
            user = User(username=form.name.data)
            db.session.add(user)
            session['known'] = False
            if app.config['FLASKT_ADMIN']:
                send_email(app.config['FLASKT_ADMIN'], 'New User', 'mail/new_user', user=user)
            # flash('Looks like you have changed your name!')
        else:
            session['known'] = True
        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))

異步發(fā)送電子郵件

from threading import Thread

def send_async_email(app, msg):
    with app.app_context():
        mail.send(msg)


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)
    thr = Thread(target=send_async_email, args=[app, msg])
    thr.start()
    return thr

在不同線程中執(zhí)行mail.send()函數(shù)時捧韵，程序上下文使用app.app_context()人工創(chuàng)建汉操。