flask之综合文件上传

最新推荐文章于 2022-10-13 17:04:50 发布

hello_dengdai

最新推荐文章于 2022-10-13 17:04:50 发布

阅读量282

点赞数

CC 4.0 BY-SA版权

分类专栏： flask

本文链接：https://blog.youkuaiyun.com/hello_dengdai/article/details/82054967

flask 专栏收录该内容

5 篇文章

订阅专栏

博客围绕Flask进行综合上传相关内容阐述，涉及Flask在文件上传方面的应用，属于后端开发领域，能帮助开发者了解Flask在文件上传功能上的实现。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

from flask_uploads import IMAGES
from  flask import Flask,render_template
from  flask_script import Manager
from  flask_bootstrap import Bootstrap
from  flask_wtf import FlaskForm
from  flask_wtf.file import FileField,FileAllowed,FileRequired
from  wtforms import SubmitField
from flask_uploads import UploadSet
from flask_uploads import configure_uploads
from  flask_uploads import patch_request_class
import os

app=Flask(__name__)
manager=Manager(app)
bootstrap=Bootstrap(app)
app.config['MAX_CONTENT_LENGTH']=1024*1024
app.config['UPLOADED_PHOTOS_DEST']=os.path.join(os.getcwd(),'static/img')
photos=UploadSet('photos',IMAGES)
configure_uploads(app,photos)
patch_request_class(app,size=None)
app.config['SECRET_KEY']='123456'

class UploadForm(FlaskForm):
    photo=FileField('头像',validators=[FileRequired('请选择文件'),FileAllowed(photos,'只能上传图片')])
    submit=SubmitField('上传')


@app.route('/')
def index():
    return '完整的文件上传'

def random_name(length=5):
    import random
    base_str='1234567890'
    return ''.join(random.choice(base_str) for i in range(length))


@app.route('/upload/', methods=['GET', 'POST'])
def upload():
    img_url = None
    form = UploadForm()
    if form.validate_on_submit():
        photo = form.photo.data
        if photo:
            suffix = os.path.splitext(photo.filename)[1]
            filename = random_name() + suffix
            photos.save(photo, name=filename)
            from PIL import Image
            pathname = os.path.join(app.config['UPLOADED_PHOTOS_DEST'], filename)
            img = Image.open(pathname)
            img.thumbnail((100, 100))
            img.save(pathname)
            img_url = photos.url(filename)

        # return '上传成功'
    return render_template('upload.html', form=form, img_url=img_url)


if __name__=='__main__':
    manager.run()

{% extends 'bootstrap/base.html' %}
{% from 'bootstrap/wtf.html' import quick_form %}
{% block title %}文件上传{% endblock %}
{% block content %}
    <div class="container">


        {% if img_url %}
            <img src="{{ img_url }}">
        {% endif %}
        {{ quick_form(form) }}
{#        <form method="post" enctype="multipart/form-data">#}
{#            <input type="file" name="photo">#}
{#            <input type="submit" value="提交">#}
{#        </form>#}


    </div>
{% endblock %}