from selenium import webdriver

import time

fp = webdriver.FirefoxProfile()

fp.set_preference('browser.download.manager.showWhenStarting',False)

fp.set_preference('browser.download.folderList',2) #设置Firefox的默认下载文件夹。0是桌面；1是“我的下载”；2是自定义。

fp.set_preference('browser.download.dir','C:\\Users\\del\\Desktop\\1') #设置自定义路径时，定义的路径

fp.set_preference('browser.helperApps.neverAsk.saveToDisk','application/zip') #不询问下载路径；后面的参数为要下载页面的文件类型的值。

time.sleep(10)

driver = webdriver.Firefox(firefox_profile=fp)

driver.implicitly_wait(20)

driver.get("http://sahitest.com/demo/saveAs.htm")

driver.find_element_by_link_text('testsaveas.zip').click()

time.sleep(10)

driver.quit()

============================================================

from selenium import webdriver

import time

fp = webdriver.FirefoxProfile()

fp.set_preference('browser.download.manager.showWhenStarting',False)

fp.set_preference('browser.download.folderList',2)

fp.set_preference('browser.download.dir','C:\\Users\\del\\Desktop\\1')

fp.set_preference('browser.helperApps.neverAsk.saveToDisk','application/octet-stream')

#exe文件

time.sleep(10)

driver = webdriver.Firefox(firefox_profile=fp)

driver.implicitly_wait(20)

driver.get("https://www.python.org/downloads/release/python-381/")

driver.find_element_by_link_text('Windows x86-64 executable installer').click()

time.sleep(10)

driver.quit()

==============================================

按照文件扩展名排列的 Mime 类型列表

扩展名类型/子类型

application/octet-stream

323

text/h323

acx

application/internet-property-stream

ai

application/postscript

aif

audio/x-aiff

aifc

audio/x-aiff

aiff

audio/x-aiff

asf

video/x-ms-asf

asr

video/x-ms-asf

asx

video/x-ms-asf

au

audio/basic

avi

video/x-msvideo

axs

application/olescript

bas

text/plain

bcpio

application/x-bcpio

bin

application/octet-stream

bmp

image/bmp

c

text/plain

cat

application/vnd.ms-pkiseccat

cdf

application/x-cdf

cer

application/x-x509-ca-cert

class

application/octet-stream

clp

application/x-msclip

cmx

image/x-cmx

cod

image/cis-cod

cpio

application/x-cpio

crd

application/x-mscardfile

crl

application/pkix-crl

crt

application/x-x509-ca-cert

csh

application/x-csh

css

text/css

dcr

application/x-director

der

application/x-x509-ca-cert

dir

application/x-director

dll

application/x-msdownload

dms

application/octet-stream

doc

application/msword

dot

application/msword

dvi

application/x-dvi

dxr

application/x-director

eps

application/postscript

etx

text/x-setext

evy

application/envoy

exe

application/octet-stream

fif

application/fractals

flr

x-world/x-vrml

gif

image/gif

gtar

application/x-gtar

gz

application/x-gzip

h

text/plain

hdf

application/x-hdf

hlp

application/winhlp

hqx

application/mac-binhex40

hta

application/hta

htc

text/x-component

htm

text/html

html

text/html

htt

text/webviewhtml

ico

image/x-icon

ief

image/ief

iii

application/x-iphone

ins

application/x-internet-signup

isp

application/x-internet-signup

jfif

image/pipeg

jpe

image/jpeg

jpeg

image/jpeg

jpg

image/jpeg

js

application/x-javascript

latex

application/x-latex

lha

application/octet-stream

lsf

video/x-la-asf

lsx

video/x-la-asf

lzh

application/octet-stream

m13

application/x-msmediaview

m14

application/x-msmediaview

m3u

audio/x-mpegurl

man

application/x-troff-man

mdb

application/x-msaccess

me

application/x-troff-me

mht

message/rfc822

mhtml

message/rfc822

mid

audio/mid

mny

application/x-msmoney

mov

video/quicktime

movie

video/x-sgi-movie

mp2

video/mpeg

mp3

audio/mpeg

mpa

video/mpeg

mpe

video/mpeg

mpeg

video/mpeg

mpg

video/mpeg

mpp

application/vnd.ms-project

mpv2

video/mpeg

ms

application/x-troff-ms

mvb

application/x-msmediaview

nws

message/rfc822

oda

application/oda

p10

application/pkcs10

p12

application/x-pkcs12

p7b

application/x-pkcs7-certificates

p7c

application/x-pkcs7-mime

p7m

application/x-pkcs7-mime

p7r

application/x-pkcs7-certreqresp

p7s

application/x-pkcs7-signature

pbm

image/x-portable-bitmap

pdf

application/pdf

pfx

application/x-pkcs12

pgm

image/x-portable-graymap

pko

application/ynd.ms-pkipko

pma

application/x-perfmon

pmc

application/x-perfmon

pml

application/x-perfmon

pmr

application/x-perfmon

pmw

application/x-perfmon

pnm

image/x-portable-anymap

pot,

application/vnd.ms-powerpoint

ppm

image/x-portable-pixmap

pps

application/vnd.ms-powerpoint

ppt

application/vnd.ms-powerpoint

prf

application/pics-rules

ps

application/postscript

pub

application/x-mspublisher

qt

video/quicktime

ra

audio/x-pn-realaudio

ram

audio/x-pn-realaudio

ras

image/x-cmu-raster

rgb

image/x-rgb

rmi

audio/mid

roff

application/x-troff

rtf

application/rtf

rtx

text/richtext

scd

application/x-msschedule

sct

text/scriptlet

setpay

application/set-payment-initiation

setreg

application/set-registration-initiation

sh

application/x-sh

shar

application/x-shar

sit

application/x-stuffit

snd

audio/basic

spc

application/x-pkcs7-certificates

spl

application/futuresplash

src

application/x-wais-source

sst

application/vnd.ms-pkicertstore

stl

application/vnd.ms-pkistl

stm

text/html

svg

image/svg+xml

sv4cpio

application/x-sv4cpio

sv4crc

application/x-sv4crc

swf

application/x-shockwave-flash

t

application/x-troff

tar

application/x-tar

tcl

application/x-tcl

tex

application/x-tex

texi

application/x-texinfo

texinfo

application/x-texinfo

tgz

application/x-compressed

tif

image/tiff

tiff

image/tiff

tr

application/x-troff

trm

application/x-msterminal

tsv

text/tab-separated-values

txt

text/plain

uls

text/iuls

ustar

application/x-ustar

vcf

text/x-vcard

vrml

x-world/x-vrml

wav

audio/x-wav

wcm

application/vnd.ms-works

wdb

application/vnd.ms-works

wks

application/vnd.ms-works

wmf

application/x-msmetafile

wps

application/vnd.ms-works

wri

application/x-mswrite

wrl

x-world/x-vrml

wrz

x-world/x-vrml

xaf

x-world/x-vrml

xbm

image/x-xbitmap

xla

application/vnd.ms-excel

xlc

application/vnd.ms-excel

xlm

application/vnd.ms-excel

xls

application/vnd.ms-excel

xlt

application/vnd.ms-excel

xlw

application/vnd.ms-excel

xof

x-world/x-vrml

xpm

image/x-xpixmap

xwd

image/x-xwindowdump

z

application/x-compress

zip

application/zip

=====================================================================================================

from selenium import webdriver

import os

import time

fp = webdriver.FirefoxProfile()

fp.set_preference("browser.download.folderList", 1) #0桌面，1默认下载路径，2自定义路径。设置0和1的时候，第三个设置自定义路径的就要去掉

fp.set_preference("browser.download.manager.showWhenStarting", False) #设置不弹出下载窗口

#fp.set_preference("browser.download.dir",os.getcwd()) # 指定所下载文件的目录。os.getcwd()函数不需要传递参数，用于返回当前的目录

#我的 C:\Users\del\PycharmProjects\untitled\ff

fp.set_preference("browser.helperApps.neverAsk.saveToDisk","application/zip") #设置下载的文件格式

time.sleep(10)

driver = webdriver.Firefox(firefox_profile=fp)

driver.implicitly_wait(20)

driver.get("http://sahitest.com/demo/saveAs.htm")

driver.find_element_by_link_text('testsaveas.zip').click()

time.sleep(50)

driver.quit()