是Burp_Suite的一个功能,

可以分析网站目录.

前提burpsuite开代理.

参考这个

添加header和data
request=urllib.request.Request(url)
response=urllib.request.urlopen(request)

response是一个http.client.HTTPResponse对象

print(response.geturl()) #获取网址
print(response.info()) #获取信息
print(response.getcode()) # http状态码

html=response.read()

urllib.request.Request(url, data=None, headers={}, origin_req_host=None, unverifiable=False, method=None)
1.data参数：the HTTP request will be a POST instead of a GET when the data parameter is provided.data should be a buffer in the standard application/x-www-form-urlencoded format. The urllib.parse.urlencode() function takes a mapping or sequence of 2-tuples and returns a string in this format.

data={}
data['type']='AUTO'
data['i']=content
data['doctype']='json'
data['xmlVersion']=1.8
data['keyfrom']='fanyi.web'
data['ue']='UTF-8'
data['action']='FY_BY_CLICKBUTTON'
data['typoResult']='true'

data=urllib.parse.urlencode(data).encode('utf-8')

2.headers：一个字典，可以直接从浏览器中复制过来

header={}

添加header的第一种方法

header['User-Agent']='Mozilla/5.0 (Windows NT 10.0; WOW64; rv:43.0) Gecko/20100101 Firefox/43.0'
request=urllib.request.Request(url,data,header)

也可使用以下方法

request.add_header('User-Agent','Mozilla/5.0 (Windows NT 10.0; WOW64; rv:43.0) Gecko/20100101 Firefox/43.0')

获取Response Headers
下面代码是用来判断 网页是否使用gzip压缩过。

for i in response.getheaders():

if i[0]=="Content-Encoding":
    if(i[-1]=="gzip"):
        html=gzip.decompress(html)

使用代理
1.参数是一个字典{‘类型’：‘代理ip:端口号’}
proxy_support=urllib.request.ProxyHandler({})
2.定制、创建一个openner
opener=urllib.request.build_opener(proxy_support)
3a.安装opener
urllib.request.install_opener(opener)
3b.调用opener
opener.open(url)`

代码
proxy_support=urllib.request.ProxyHandler({'http':random.choice(iplist)})

opener=urllib.request.build_opener(proxy_support)
opener.addheaders=[('User-Agent','Mozilla/5.0 (Windows NT 10.0; WOW64; rv:43.0) Gecko/20100101 Firefox/43.0')]
urllib.request.install_opener(opener)

req=urllib.request.Request(url)
response=urllib.request.urlopen(req)

爬知乎图片
import urllib.request
import os
import random

打开网页

def url_open(url):

iplist=[
    '49.77.22.1:8118',
    '58.134.102.3:12696',
    '120.26.213.55:9999'...]

proxy_support=urllib.request.ProxyHandler({'http':random.choice(iplist)})

opener=urllib.request.build_opener(proxy_support)
opener.addheaders=[('User-Agent','Mozilla/5.0 (Windows NT 10.0; WOW64; rv:43.0) Gecko/20100101 Firefox/43.0')]

urllib.request.install_opener(opener)

req=urllib.request.Request(url)
response=urllib.request.urlopen(req)
html=response.read()
return html

获取图片地址，返回图片地址的list

def get_imgs(url):

html=url_open(url).decode('utf-8')

img_address=[]
a=html.find('data-original')
while(a!=-1):
    b=html.find('.jpg',a,a+300)
    if(b!=-1):
        # print(html[a+15:b+4])
        img_address.append(html[a+15:b+4])
    else:
        b=a+9
    a=html.find('data-original=',b)

for i in img_address:
    print(i)

return img_address

存储到本地

def save_imgs(img_address):

for i in img_address:
    # print(i)
    filename=i.split('/')[-1]
    with open(filename,'wb') as f:
        img=url_open(i)
        f.write(img)

def zhihuPic(url,folder="zhihu"):

if(os.path.exists(folder)):
    os.chdir(folder)
else:
    os.mkdir(folder)
    os.chdir(folder)
img_address=get_imgs(url)
save_imgs(img_address)

if __name__=='__main__':

zhihuPic("https://www.zhihu.com/question/22070147")