flask入门之文件上传与邮件发送示例_Python

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									<img src="{{ url_for('static',filename='img/17.jpg') }}" width="300" alt="">

									<form action="" method="post" enctype="multipart/form-data">

									  <p>修改头像 <input type="file" name="file"></p>

									  <p><input type="submit" value="提交"></p>

									</form>

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									#文件上传的视图函数

									@app.route('/upload/',methods=['GET','POST'])

									def icon():

									  img_name = None

									  if request.method == 'POST' and 'file' in request.files:

									    # return '有文件上传了'

									    file = request.files.get('file')

									    filename = file.filename #拿到文件名称

									    #图片上传保存的路径

									    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)

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									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)

									#自定义一个文件上传的表单类

									class File(FlaskForm):

									  photos = FileField('修改头像',validators=[FileRequired(message='文件不能为空'),FileAllowed(file,message='该文件类型不允许上传')])

									  submit = SubmitField('提交')

									@app.route('/')

									def index():

									  return render_template('index.html')

									#生成随机的图片名称

									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) # 获取图片大小

									    # 设置尺寸

									    img.thumbnail((128, 128)) # 当前缩放不是等比缩放 变成等比缩放

									    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()

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									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)

									#自定义一个文件上传的表单类

									class File(FlaskForm):

									  photos = FileField('修改头像',validators=[FileRequired(message='文件不能为空'),FileAllowed(file,message='该文件类型不允许上传')])

									  submit = SubmitField('提交')

									@app.route('/')

									def index():

									  return render_template('index.html')

									#生成随机的图片名称

									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) # 获取图片大小

									    # 设置尺寸

									    img.thumbnail((128, 128)) # 当前缩放不是等比缩放 变成等比缩放

									    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()

1	`pip install flask-mail`

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									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'

									# 为了保密 将邮箱账号和授权码都加入到了临时环境变量中

									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 '发送邮件'

									if __name__ == '__main__':

									  manager.run()

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									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,)) #创建线程 参数1为创建子线程 参数2为传递参数 类型为元组

									  thr.start() #开启线程

									  return '发送邮件'

									def async_send_mail(msg):

									  #开启程序上下文 把当前请求 作为同一个请求

									  with app.app_context():

									    mail.send(message=msg)

									if __name__ == '__main__':

									  manager.run()