使用来自python的IE下载文件

Question

我正在尝试使用IE下载Python文件:

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,询问用户保存文件的位置.如何从python自动保存此文件？

我需要使用一些浏览器,而不是urllib或mechanize,因为在下载文件之前我需要与一些ajax功能进行交互.

Answer 1

只要IE对话框在前台并且"另存为"目录中不存在下载的文件,这对我有用:

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");