简介

文章介绍的是使用tornado完成文件的上传功能

该项目的github地址: tornado_learning.git (opens new window)

栗子

设置文件上传的路径

代码: tornado_learning/settings.py

BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
settings = {
    "MEDIA_ROOT": os.path.join(BASE_DIR, "media"),
}

保存上传文件

获取前端传送过来的front_image文件，然后再使用aiofiles完成上传文件的二进制异步写入。

代码: /apps/hello/uploadHandler.py

from tornado_learning.handler import BaseHandler
import os
import uuid
import aiofiles

class UploadHandler(BaseHandler):

    async def post(self):
        ret_data = {}

        files_meta = self.request.files.get("front_image", None)
        if not files_meta:
            self.set_status(400)
            ret_data["front_image"] = "请上传图片"
        else:
            for meta in files_meta:
                filename = meta["filename"]
                new_filename = "{uuid}_{filename}".format(uuid=uuid.uuid1(), filename=filename)
                file_path = os.path.join(self.settings["MEDIA_ROOT"], new_filename)

                async with aiofiles.open(file_path, "wb") as f:
                    await f.write(meta["body"])

                ret_data['file_path'] = file_path

        return self.finish(ret_data)