Flask+python实现文件上传功能 

import os
from flask import Flask, request
from werkzeug import secure_filename   # 获取上传文件的文件名

UPLOAD_FOLDER = r'D:\file'   # 上传路径
ALLOWED_EXTENSIONS = set(['txt', 'pdf', 'png', 'jpg', 'jpeg', 'gif','doc'])   # 允许上传的文件类型

app = Flask(__name__)
app.config['UPLOAD_FOLDER'] = UPLOAD_FOLDER

def allowed_file(filename):   # 验证上传的文件名是否符合要求，文件名必须带点并且符合允许上传的文件类型要求，两者都满足则返回 true
    return '.' in filename and \
           filename.rsplit('.', 1)[1] in ALLOWED_EXTENSIONS

@app.route('/', methods=['GET', 'POST'])
def upload_file():
    if request.method == 'POST':   # 如果是 POST 请求方式
        file = request.files['file']   # 获取上传的文件
        if file and allowed_file(file.filename):   # 如果文件存在并且符合要求则为 true
            filename = secure_filename(file.filename)   # 获取上传文件的文件名
            file.save(os.path.join(app.config['UPLOAD_FOLDER'], filename))   # 保存文件
            return '{} upload successed!'.format(filename)   # 返回保存成功的信息
    # 使用 GET 方式请求页面时或是上传文件失败时返回上传文件的表单页面
    return '''
    <!doctype html>
    <title>Upload new File</title>
    <h1>Upload new File</h1>
    <form action="" method=post enctype=multipart/form-data>
      <p><input type=file name=file>
         <input type=submit value=Upload>
    </form>
    '''


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

 

posted @ 2019-03-18 15:44  炫风真是风  阅读(9985)  评论(0)    收藏  举报