实现下载文件功能
python
vim test.py
import io
from flask import Flask, send_file
app = Flask(__name__)
@app.route('/download', methods=['GET'])
def download_file():
# 当前目录下创建文件对象
filename = "file.txt"
file = open(filename, "w")
# 写入数据到文件
file.write("Hello, World!")
# 关闭文件
file.close()
try:
# 尝试打开文件并发送
return send_file(filename, as_attachment=True)
except PermissionError:
return {"code": 403, "message":"文件权限错误,无法访问", "data":""}
except Exception as e:
return {"code": 500, "message":"发生错误", "data": str(e)}
if __name__ == '__main__':
#app.run()
svhost="0.0.0.0"
svport=9001
app.run(debug=True, host=svhost, port=svport)
1.filename 变量中提供要下载的文件的路径。
2.当访问 download 路由时,会触发download_file 函数,该函数使用send_file 方法将文件发送到客户端以进行下载
3.as_attachment=True 表示将文件作为附件下载,而不是在浏览器中直接打开。
powershell
(base) user@ubuntu:~$ python test.py
* Serving Flask app 'flash_send'
* Debug mode: on
WARNING: This is a development server. Do not use it in a production deployment. Use a production WSGI server instead.
* Running on all addresses (0.0.0.0)
* Running on http://127.0.0.1:9001
* Running on http://192.168.98.169:9001
Press CTRL+C to quit
* Restarting with watchdog (inotify)
* Debugger is active!
* Debugger PIN: 188-315-851