使用IE从python下载文件 [英] Downloading file using IE from python

问题描述

我正在尝试通过IE使用Python下载文件：

I'm trying to download file with Python using IE:

from win32com.client import DispatchWithEvents

class EventHandler(object):
    def OnDownloadBegin(self):
        pass

ie = DispatchWithEvents("InternetExplorer.Application", EventHandler)

ie.Visible = 0

ie.Navigate('http://website/file.xml')

在此之后，我得到一个窗口，询问用户文件的保存位置。如何从python自动保存此文件？

After this, I'm getting a window asking the user where to save the file. How can I save this file automatically from python?

我需要使用某些浏览器，而不是urllib或机械化，因为在下载之前我需要与一些Ajax功能进行交互的文件。

I need to use some browser, not urllib or mechanize, because before downloading file I need to interact with some ajax functionality.

推荐答案

这对我有用，只要IE对话框是在前台，下载的文件在另存为目录中尚不存在：

This works for me as long as the IE dialogs are in the foreground and the downloaded file does not already exist in the "Save As" directory:

import time
import threading
import win32ui, win32gui, win32com, pythoncom, win32con
from win32com.client import Dispatch

class IeThread(threading.Thread):
    def run(self):
        pythoncom.CoInitialize()
        ie = Dispatch("InternetExplorer.Application")
        ie.Visible = 0
        ie.Navigate('http://website/file.xml')

def PushButton(handle, label):
    if win32gui.GetWindowText(handle) == label:
        win32gui.SendMessage(handle, win32con.BM_CLICK, None, None)
        return True

IeThread().start()
time.sleep(3)  # wait until IE is started
wnd = win32ui.GetForegroundWindow()
if wnd.GetWindowText() == "File Download - Security Warning":
    win32gui.EnumChildWindows(wnd.GetSafeHwnd(), PushButton, "&Save");
    time.sleep(1)
    wnd = win32ui.GetForegroundWindow()
if wnd.GetWindowText() == "Save As":
    win32gui.EnumChildWindows(wnd.GetSafeHwnd(), PushButton, "&Save");

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