python批量下载图片的三种方法

win32com：
代码如下:

#将滚动条滑到底,最多滑动20000像素
#模拟键盘右键，查看多张图片
import sys
import win32com.client,win32api
import urllib.request
import time
import os

def main():
#获取参数
url=sys.argv[1]
#操作IE
ie=win32com.client.Dispatch("InternetExplorer.Application")
ie.Navigate(url)
ie.Visible=True
last_url=''
dir_name=''
while last_url!=url:
print('\nThe URL is:',url,'\n')
while ie.ReadyState != 4:
time.sleep(1)
while ie.Document.readyState != "complete":
time.sleep(1)
#滑动滚动条
win=ie.Document.parentWindow
lastY=-1;
for i in range(40):
win.scrollTo(0,500*i)
nowY=win.pageYOffset
if(nowY==lastY):
break
lastY=nowY
time.sleep(0.4)
print('Document load state:',ie.Document.readyState)
doc=ie.Document
#第一次需要创建目录
if(dir_name==''):
root_dir='E:\\img'
dir_name=root_dir+'\\'+doc.title
dir_name=dir_name.replace('|','-')
if(os.path.exists(root_dir)!=True):
os.mkdir(root_dir)
if(os.path.exists(dir_name)!=True):
os.mkdir(dir_name)
all_image=doc.images
print('共有',all_image.length,'张图片')
count=0;
for img in all_image:
if(img.id=='b_img'):
count=count+1
print(count,img.src)
time.sleep(1)
img_file=urllib.request.urlopen(img.src)
byte=img_file.read()
print(count,'donwload complete!','-'*10,'size:','{:.3}'.format(byte.__len__()/1024),'KB')
if(byte.__len__()>7000):
file_name=img.src.replace('/','_')
file_name=file_name.replace(':','_')
end=file_name.__len__()
if(file_name.rfind('!')!=-1):
end=file_name.rfind('!')
if(file_name.rfind('?')!=-1):
end=file_name.rfind('?')
file_name=file_name[:end]
write_file=open(dir_name+'\\'+file_name,'wb')
write_file.write(byte)
write_file.close()
print(count,file_name,'complete!')
#下一张
last_url=url
win32api.keybd_event(39,0)
time.sleep(1)
url=ie.Document.url
print(last_url,url)
#ie.Quit()
if __name__ == '__main__':
main()

selenium:

代码如下:

def main():
#获取参数
url=sys.argv[1]
#操作IE
driver=webdriver.Chrome()
driver.get(url)
driver.execute_script("window.scrollTo(0, document.body.scrollHeight);")
#创建目录
dir_name=driver.find_element_by_tag_name('title').text
print dir_name
root_dir='E:\\img'
dir_name=root_dir+'\\'+dir_name
dir_name=dir_name.replace('|','-')
if(os.path.exists(root_dir)!=True):
os.mkdir(root_dir)
if(os.path.exists(dir_name)!=True):
os.mkdir(dir_name)
images=driver.find_elements_by_tag_name('img')
count=0
for image in images:
count=count+1
image_url=str(image.get_attribute('src'))
img_file=urllib.urlopen(image_url)
byte=img_file.read()
print count,'donwload complete!','-'*10,'size:',byte.__len__()/1024,'KB'
if(byte.__len__()>7000):
file_name=image_url.replace('/','_')
file_name=file_name.replace(':','_')
end=file_name.__len__()
if(file_name.rfind('!')!=-1):
end=file_name.rfind('!')
if(file_name.rfind('?')!=-1):
end=file_name.rfind('?')
file_name=file_name[:end]
write_file=open(dir_name+'\\'+file_name,'wb')
write_file.write(byte)
write_file.close()
print count,file_name,'complete!'

driver.quit()
if __name__ == '__main__':
main()

HTMLParser:

代码如下:

from html.parser import HTMLParser
class MyHTMLParser(HTMLParser):
def handle_starttag(self,tag,attrs):
if(tag=='img'):
for attr in attrs:
if(attr[0]=='src'):
img_file=urllib.request.urlopen(attr[1])
byte=img_file.read()
#文件大于1000b则生成文件,添加计数，下载多少图片，显示html代码
if(byte.__len__()>1000):
file_name=attr[1].replace('/','_')
file_name=file_name.replace(':','_')
end=file_name.__len__()
if(file_name.rfind('!')!=-1):
end=file_name.rfind('!')
if(file_name.rfind('?')!=-1):
end=file_name.rfind('?')
file_name=file_name[:end]
## print(file_name)
write_file=open('E:\\img\\'+file_name,'wb')
write_file.write(byte)
write_file.close()

def main():
#获取参数
url=sys.argv[1]
print('\nThe URL is:',url,'\n')
#读取url所指向的资源
html_file=urllib.request.urlopen(url)
byte_content=html_file.read()
#将html网页保存起来
url_file=open('E:\\img\\html\\result.htm','wb')
url_file.write(byte_content)
url_file.close()
#从字节转换为字符串
s=str(byte_content, encoding = "utf-8")
#print(s)
#bytes.decode(html_file.read())
parser=MyHTMLParser(strict=False)
parser.feed(s)
# Standard boilerplate to call the main() function to begin
# the program.
if __name__ == '__main__':
main()