Tornado 如何做文件下载
要求:浏览器输入url地址,直接弹窗提示下载
Tornado服务端,搭建文件下载服务
#!/usr/bin/env python # -*- coding:utf-8 -*- import tornado.ioloop import tornado.web class MainHandler(tornado.web.RequestHandler): def get(self): filename = self.get_argument('filename') # http头 浏览器自动识别为文件下载 self.set_header('Content-Type', 'application/octet-stream') # 下载时显示的文件名称 self.set_header('Content-Disposition', 'attachment; filename=%s'%filename) with open(filename, 'rb') as f: while True: data = f.read(1024) if not data: break self.write(data) # # 记得有finish哦 self.finish() def make_app(): return tornado.web.Application([ (r"/", MainHandler), ]) if __name__ == "__main__": app = make_app() app.listen(8888) tornado.ioloop.IOLoop.current().start()
浏览器验证 输入地址http://127.0.0.1:8888/?filename=meeting_welcome.wav:
补充:之前测试,一直在浏览器页面显示的是二进制字符串,后来发现是没有在http包里面指定头部类型
下载中文文件
Tornado服务端
#!/usr/bin/env python # -*- coding:utf-8 -*- import tornado.ioloop import tornado.web class MainHandler(tornado.web.RequestHandler): def get(self,*args): filename = self.get_argument('filename') print(filename) self.set_header('Content-Type', 'application/octet-stream') self.set_header('Content-Disposition', ('attachment; filename=%s'%filename).encode('utf-8')) with open(filename, 'rb') as f: while True: data = f.read(1024) if not data: break self.write(data) def make_app(): return tornado.web.Application([ (r"/", MainHandler), ]) if __name__ == "__main__": app = make_app() app.listen(8888) tornado.ioloop.IOLoop.current().start()
浏览器验证 输入地址http://127.0.0.1:8888/?filename=会.wav
Tornado 音频文件在线播放
效果入下:
代码:
#!/usr/bin/env python # -*- coding:utf-8 -*- import os import tornado.ioloop import tornado.web class MainHandler(tornado.web.RequestHandler): def get(self,filename): self.set_header('Content-Type', 'audio/mpeg') if os.path.exists(filename): with open(filename, 'rb') as f: while True: data = f.read(1024) if not data: break self.write(data) # # 记得有finish哦 self.finish() else: self.send_error(404) def make_app(): return tornado.web.Application([ (r"/(.*)", MainHandler), ]) if __name__ == "__main__": app = make_app() app.listen(8888) tornado.ioloop.IOLoop.current().start()
请求地址http://127.0.0.1:8888/test.mp3