摘要：文件上传邮件发送一原生文件上传修改头像提交文件上传的视图函数有文件上传了拿到文件名称图片上传保存的路径使用和渲染文件上传自定义一个文件上传的表单类修改头像文件不能为空该文件类型不允许上传提交生成随机的图片名称获取图片大小设置尺寸当前缩放
文件上传邮件发送
一、原生文件上传
form.html
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,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()
模板中的代码
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()
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_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()
异步发送邮件
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,)) #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()
flask入门5-model
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