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本篇文章給大家分享的是有關flask怎么實現文件上傳與郵件發送，小編覺得挺實用的，因此分享給大家學習，希望大家閱讀完這篇文章后可以有所收獲，話不多說，跟著小編一起來看看吧。
一、原生文件上傳
form.html
<img src="{{ url_for('static',filename='img/17.jpg') }}" width="300" alt="">
<form action="" method="post" enctype="multipart/form-data">
<p>修改頭像 <input type="file" name="file"></p>
<p><input type="submit" value="提交"></p>
</form>manage.py
#文件上傳的視圖函數
@app.route('/upload/',methods=['GET','POST'])
def icon():
img_name = None
if request.method == 'POST' and 'file' in request.files:
# return '有文件上傳了'
file = request.files.get('file')
filename = file.filename #拿到文件名稱
#圖片上傳保存的路徑
imgPath = os.path.join(os.getcwd(), 'static/upload/'+filename)
file.save(imgPath)
img_name = filename
return render_template('user/change_icon.html',img_name=img_name)使用wtf和bootstrap渲染文件上傳
from flask import Flask,render_template,request
from flask_script import Manager
from flask_wtf import FlaskForm
from flask_wtf.file import FileField,FileAllowed,FileRequired
from wtforms import SubmitField
from flask_uploads import UploadSet,patch_request_class,configure_uploads,IMAGES
from flask_bootstrap import Bootstrap
import os
from PIL import Image
app = Flask(__name__)
app.config['MAX_CONTENT_LENGTH'] = 1024*1024*64
app.config['SECRET_KEY'] = 'abcdef'
app.config['UPLOADED_PHOTOS_DEST'] = os.path.join(os.getcwd(),'static/upload')
bootstrap = Bootstrap(app)
file = UploadSet('photos',IMAGES)
configure_uploads(app,file)
patch_request_class(app,size=None)
manager = Manager(app)
#自定義一個文件上傳的表單類
class File(FlaskForm):
photos = FileField('修改頭像',validators=[FileRequired(message='文件不能為空'),FileAllowed(file,message='該文件類型不允許上傳')])
submit = SubmitField('提交')
@app.route('/')
def index():
return render_template('index.html')
#生成隨機的圖片名稱
def random_name(suffix,length=32):
import string,random
myStr = string.ascii_letters + '0123456789'
return ''.join(random.choice(myStr) for i in range(length))+suffix
@app.route('/upload/',methods=['GET','POST'])
def icon():
form = File()
img_url = None
if form.validate_on_submit():
data = request.files.get('photos')
suffix = os.path.splitext(data.filename)[-1]
newName = random_name(suffix)
file.save(data,name=newName)
img_url = file.url(newName)
img = Image.open(os.path.join(app.config['UPLOADED_PHOTOS_DEST'],newName))
print(img.size) # 獲取圖片大小
# 設置尺寸
img.thumbnail((128, 128)) # 當前縮放不是等比縮放 變成等比縮放
img.save(os.path.join(app.config['UPLOADED_PHOTOS_DEST'],'s_'+newName))
return render_template('user/wtf-uplods.html',form=form,img_url=img_url)
if __name__ == '__main__':
manager.run()模板中的代碼
from flask import Flask,render_template,request
from flask_script import Manager
from flask_wtf import FlaskForm
from flask_wtf.file import FileField,FileAllowed,FileRequired
from wtforms import SubmitField
from flask_uploads import UploadSet,patch_request_class,configure_uploads,IMAGES
from flask_bootstrap import Bootstrap
import os
from PIL import Image
app = Flask(__name__)
app.config['MAX_CONTENT_LENGTH'] = 1024*1024*64
app.config['SECRET_KEY'] = 'abcdef'
app.config['UPLOADED_PHOTOS_DEST'] = os.path.join(os.getcwd(),'static/upload')
bootstrap = Bootstrap(app)
file = UploadSet('photos',IMAGES)
configure_uploads(app,file)
patch_request_class(app,size=None)
manager = Manager(app)
#自定義一個文件上傳的表單類
class File(FlaskForm):
photos = FileField('修改頭像',validators=[FileRequired(message='文件不能為空'),FileAllowed(file,message='該文件類型不允許上傳')])
submit = SubmitField('提交')
@app.route('/')
def index():
return render_template('index.html')
#生成隨機的圖片名稱
def random_name(suffix,length=32):
import string,random
myStr = string.ascii_letters + '0123456789'
return ''.join(random.choice(myStr) for i in range(length))+suffix
@app.route('/upload/',methods=['GET','POST'])
def icon():
form = File()
img_url = None
if form.validate_on_submit():
data = request.files.get('photos')
suffix = os.path.splitext(data.filename)[-1]
newName = random_name(suffix)
file.save(data,name=newName)
img_url = file.url(newName)
img = Image.open(os.path.join(app.config['UPLOADED_PHOTOS_DEST'],newName))
print(img.size) # 獲取圖片大小
# 設置尺寸
img.thumbnail((128, 128)) # 當前縮放不是等比縮放 變成等比縮放
img.save(os.path.join(app.config['UPLOADED_PHOTOS_DEST'],'s_'+newName))
return render_template('user/wtf-uplods.html',form=form,img_url=img_url)
if __name__ == '__main__':
manager.run()二、發送郵件 flask-mail
pip install flask-mail
設置臨時環境變量
windows set 名=值
Ubuntu下 export 名=值
注意： 名和值都不用加引號
單線程發送郵件
from flask import Flask,render_template
from flask_script import Manager
from flask_mail import Mail,Message
import os
app = Flask(__name__)
app.config['MAIL_SERVER'] = 'smtp.163.com'
# 為了保密 將郵箱賬號和授權碼都加入到了臨時環境變量中
app.config['MAIL_USERNAME'] = os.environ.get('MAIL_USERNAME')
app.config['MAIL_PASSWORD'] = os.environ.get('MAIL_PASSWORD')
mail = Mail(app)
manager = Manager(app)
@app.route('/send_mail/')
def send_mail():
msg = Message(subject='大郎',recipients=['793390457@qq.com'],sender=app.config['MAIL_USERNAME'])
msg.html = render_template('email/activate.html',username='大郎')
mail.send(message=msg)
return '發送郵件'
if __name__ == '__main__':
manager.run()異步發送郵件
from flask import Flask,render_template
from flask_script import Manager
from flask_mail import Mail,Message
import os
from threading import Thread
app = Flask(__name__)
app.config['MAIL_SERVER'] = 'smtp.163.com'
app.config['MAIL_USERNAME'] = os.environ.get('MAIL_USERNAME')
app.config['MAIL_PASSWORD'] = os.environ.get('MAIL_PASSWORD')
mail = Mail(app)
manager = Manager(app)
@app.route('/send_mail/')
def send_mail():
msg = Message(subject='大郎',recipients=['793390457@qq.com'],sender=app.config['MAIL_USERNAME'])
msg.html = render_template('email/activate.html',username='大郎')
thr = Thread(target=async_send_mail,args=(msg,)) #創建線程 參數1為創建子線程 參數2為傳遞參數 類型為元組
thr.start() #開啟線程
return '發送郵件'
def async_send_mail(msg):
#開啟程序上下文 把當前請求 作為同一個請求
with app.app_context():
mail.send(message=msg)
if __name__ == '__main__':
manager.run()以上就是flask怎么實現文件上傳與郵件發送，小編相信有部分知識點可能是我們日常工作會見到或用到的。希望你能通過這篇文章學到更多知識。更多詳情敬請關注億速云行業資訊頻道。
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