from flask import Flask, redirect, request, render_template, url_for, send_from_directory
from werkzeug.utils import secure_filename
import os
app = Flask(__name__)
'''配置文件路径， 防止恶意读取你文件的'''
app.config['UPLOAD_FOLDER'] = 'C:/Users/Administrator/Desktop/flask/uploads/'
'''
设置上传文件大小
'''
app.config['MAX_CONTENT_LENGTH'] = 1024 * 1024
'''
文件上传
三要素
- 表单提交是POST 的请求
- 表单 写入参数 enctype='multipart/form-data' 当上传内容非文本（MP3。MP4。。。）时候，如图片。需要将表单的设置成enctype编码格式
- 使用上传属性 file
'''
'''
filename 获得上传文件名，secure_filename函数获得安全文件名，防止客户端伪造文件
'''
@app.route('/upload_file')
def index():
return render_template('upload_file.html')
''' 普通文件上传 '''
# @app.route('/upload_file', methods=['GET', 'POST'])
# def upload_file():
# if request.method == 'POST':
# f = request.files.get('myfile')
#
# f.save(secure_filename(f.filename))
#
# return Response('文件上传成功')
''' 存储安全路径上传 '''
# @app.route('/upload_file', methods=['GET', 'POST'])
# def upload_file():
# if request.method == 'POST':
# f = request.files.get('myfile')
#
# '''这个是文件名称'''
# filename = secure_filename(f.filename)
#
# '''将文件夹和文件名连接在一起'''
# f.save(os.path.join(app.config['UPLOAD_FOLDER'] + filename))
#
#
# return Response('文件上传成功')
''' 展示你上传的图片。。 '''
@app.route('/upload_file', methods=['GET', 'POST'])
def upload_file():
if request.method == 'POST':
f = request.files.get('myfile')
'''这个是文件名称'''
filename = secure_filename(f.filename)
'''将文件夹和文件名连接在一起'''
f.save(os.path.join(app.config['UPLOAD_FOLDER'] + filename))
return redirect(url_for('show_image', filename=filename))
@app.route('/show_image/<filename>')
def show_image(filename):
'''send_from_directory 这是 接口返回真实的文件，就是帮你找到你的所需要的文件'''
return send_from_directory(app.config['UPLOAD_FOLDER'],filename)
if __name__ == '__main__':
app.run(debug=True)
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>UPLOAD FILE</title>
</head>
<body>
<form action="" method="post" enctype="multipart/form-data">
<input type="file" name="myfile">
<button type="submit">上传</button>
</form>
</body>
</html>
