python - 使用 Bottle 上传和处理 CSV 文件；可能的编码问题

Question

我正在尝试使用 Bottle 通过 HTML 表单上传和处理 CSV 文件。我已经用 Tkinter 创建了一个工作示例； CSV 上传很好，所有数据(包括散列密码)都进入了 Sqlite3 数据库。

正在运行 TKINTER 代码 ...

import os
import sqlite3
import csv
from pbkdf2 import crypt
from tkinter import *
from tkinter import filedialog
root = Tk()
root.geometry("500x500")

def open1():
    filename = filedialog.askopenfilename()
    with open(filename,"r") as s_info:
        reader = csv.reader(s_info)
        for x in reader:
            pwhash = crypt(x[1])
            connection = sqlite3.connect("users.db")
            cursor_v = connection.cursor()
            cursor_v.execute("insert into users (cemail, cpassword) values (?,?)", (x[0],pwhash))
            connection.commit()
            cursor_v.close()
        else:
            print("CSV Uploaded")

x = Button(text="Open",command=open1).pack()

问题是当我尝试在 Bottle 中重新创建代码时，出现以下错误:

Bottle 代码 - HTML:

<form action="/panel" method="post" enctype="multipart/form-data">
  <input type="file" name="data" />
  <input type="submit">
</form>

Bottle 代码 - 路线:

@route('/panel', method='POST')
def do_upload():
    data = request.files.data
    with open(data,"r") as s_info:
        reader = csv.reader(s_info)
        for x in reader:
            pwhash = crypt(x[1])
            connection = sqlite3.connect("users.db")
            cursor_v = connection.cursor()
            cursor_v.execute("insert into users (cemail, cpassword) values (?,?)", (x[0],pwhash))
            connection.commit()
            cursor_v.close()
        else:
            return "<p>CSV Uploaded</p>"

错误:

with open(data,"r") as s_info:
TypeError: invalid file: <bottle.FileUpload object at 0x105cb84d0>

感谢任何帮助

Answer 1

request.files.data 是一个 FileUpload目的。它有一个名为 file 的属性，因此:

编辑:更新为处理 urllib 与 python-3.x 给出的字节流。

import codecs

def do_upload():
    reader = csv.reader(codecs.iterdecode(request.files.data.file, 'utf-8'))
    for x in reader:
        ...

应该可以工作，让你的 bottle 代码看起来像这样:

import codecs

@route('/panel', method='POST')
def do_upload():
    reader = csv.reader(codecs.iterdecode(request.files.data.file, 'utf-8'))
    for x in reader:
        pwhash = crypt(x[1])
        connection = sqlite3.connect("users.db")
        cursor_v = connection.cursor()
        cursor_v.execute("insert into users (cemail, cpassword) values (?,?)", (x[0],pwhash))
        connection.commit()
        cursor_v.close()
    else:
        return "<p>CSV Uploaded</p>"