文件上传邮件发送

一、原生文件上传

form.html

<img src="{{ url_for('static',filename='img/17.jpg') }}" width="300" alt=""> <form action="" method="post" enctype="multipart/form-data"> <p>修改头像 <input type="file" name="file"></p> <p><input type="submit" value="提交"></p> </form>

manage.py

#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)

使用wtf和bootstrap渲染文件上传

from flask import Flask,render_template,requestfrom flask_script import Managerfrom flask_wtf import FlaskFormfrom flask_wtf.file import FileField,FileAllowed,FileRequiredfrom wtforms import SubmitFieldfrom flask_uploads import UploadSet,patch_request_class,configure_uploads,IMAGESfrom flask_bootstrap import Bootstrapimport osfrom PIL import Imageapp = Flask(__name__)app.config['MAX_CONTENT_LENGTH'] = 1024*1024*64app.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()

模板中的代码

from flask import Flask,render_template,requestfrom flask_script import Managerfrom flask_wtf import FlaskFormfrom flask_wtf.file import FileField,FileAllowed,FileRequiredfrom wtforms import SubmitFieldfrom flask_uploads import UploadSet,patch_request_class,configure_uploads,IMAGESfrom flask_bootstrap import Bootstrapimport osfrom PIL import Imageapp = Flask(__name__)app.config['MAX_CONTENT_LENGTH'] = 1024*1024*64app.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()

二、发送邮件 flask-mail

pip install flask-mail

设置临时环境变量

windows set 名=值

Ubuntu下 export 名=值

注意： 名和值都不用加引号

单线程发送邮件

from flask import Flask,render_templatefrom flask_script import Managerfrom flask_mail import Mail,Messageimport osapp = 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()

异步发送邮件

from flask import Flask,render_templatefrom flask_script import Managerfrom flask_mail import Mail,Messageimport osfrom threading import Threadapp = 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()

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