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spider.py
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spider.py
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import sys
import re
import time
import math
import threading, zipfile
import urllib
import urllib.request
from urllib.parse import urlparse
from urllib.parse import urlsplit
from urllib.parse import urljoin
from bs4 import BeautifulSoup
from Queue import Queue
from tkinter import filedialog
FILEDIR = 'H:/python程序/file/'
Urls_Content = {}
class FetchPage:
"""docstring for fetchpage"""
def __init__(self, url):
self.url = url
def fetch(self):
req=urllib.request.Request(self.url)
#req.add_header('Referer', 'self.url')
req.add_header('User-agent', 'Mozilla/5.0')
response = urllib.request.urlopen(req)
return response
def getcategory(self):
filepdf = re.search(r'\.pdf\Z',self.url,re.IGNORECASE)
if filepdf:
try:
self.getpdf()
except:
print('some error ignored!')
return None
return 'pdf'
filedoc = re.search(r'\.doc|\.docx\Z',self.url,re.IGNORECASE)
if filedoc:
try:
self.getdoc()
except:
print('some error ignored!')
return None
return 'doc'
return None
def getpdf(self):
response = self.fetch()
pdfurl = urlsplit(self.url)
pdfname = pdfurl.geturl()
purename = re.split('/',pdfname)
f = open(FILEDIR+purename[-1],'wb')
#print(Urls_Content)
#f = open(PDFDIR+'/'+Urls_Content[url]+purename[-1],'wb')
f.write(response.read())
f.close()
textin('PDF : '+purename[-1]+' 已下载...... ')
def getdoc(self):
response = self.fetch()
pdfurl = urlsplit(self.url)
pdfname = pdfurl.geturl()
purename = re.split('/',pdfname)
f = open(FILEDIR+purename[-1],'wb')
f.write(response.read())
f.close()
textin('DOC : '+purename[-1]+' 已下载...... ')
class Crawl:
def __init__(self,root_url):
self.root=root_url
self.urls=set()
self.host = urlparse(root_url)[1]
def craw(self):
html_depth = 0
Que = Queue()
Que.put(self.root)
Que.put('#level#') #help to count the html tree depth
while not Que.empty():
url = Que.get()
#html_depth += 1
if html_depth == 10:
break
if url == '#level#':
html_depth += 1
Que.put('#level#')
print('html_deep ->'+html_depth.__str__())
continue
fetchpage = FetchPage(url)
# download file
filetype = fetchpage.getcategory()
if filetype is not None:
continue
self.urls.add(url)
try:
self.page = fetchpage.fetch()
except:
print('some error ignored!')
continue
soup = BeautifulSoup(self.page)
urllist = soup.findAll({'a':True})
#print(urllist)
for item in urllist:
url_temp = item.get('href')
url_content = item.get_text()#item.get('content')
m = urlparse(url_temp)
#print(m.geturl())
url_temp = urljoin(url,m.geturl())
if url_temp is not None and url_temp not in self.urls:
#print(url_temp+url_content)
Que.put(url_temp)
self.urls.add(url_temp)
Urls_Content[url_temp]=url_content
class multiSuperSpider(threading.Thread):
def __init__(self, host,num):
threading.Thread.__init__(self)
self.host = host
self.num = num
def run(self):
Crawler = Crawl(self.host)
Crawler.craw()
#textin('litte spider:',self.num.__str__(),+'--->'+self.host)
#Crawler = Crawl('http://papers.nips.cc/paper/5138-the-randomized-dependence-coefficient')
#Crawler.craw()
from tkinter import *
from tkinter import ttk
from tkinter import messagebox
hosts = set()
def textin(msg):
t['state'] = 'normal'
t.insert('end','\n'+msg)
t['state'] = 'disabled'
def examineinput(url):
match = re.search(r'http://\w+\.', url,re.IGNORECASE)
match1 = re.search(r'http://http://', url,re.IGNORECASE)
if match1:
return False
if match:
return True
return False
def _ok(*args):
urlname = name.get()
url = 'http://'+urlname
if examineinput(url)==False:
messagebox.showinfo(message='输入网址(URL)格式错误')
return
name.state(['readonly'])#='readonly'
ok.state(['disabled'])
p.grid(column=0, row=4,columnspan=4,sticky=(N, S, E, W), rowspan=1,pady=5)
p.start()
textin('开始检索，主要搜索PDF和DOC/DOCX文档')
#initial threads of spider
fetchpage = FetchPage(url)
urls = fetchpage.fetch()
soup = BeautifulSoup(urls)
urllist = soup.findAll({'a':True})
for item in urllist:
url_temp = item.get('href')
m = urlparse(url_temp)
url_temp = urljoin(url,m.geturl())
hosts.add(url_temp)
#run
i=1
for host in hosts:
#print(host)
#textin(host)
if examineinput(host):
backspider = multiSuperSpider(host,i)
backspider.start()
#backspider.setDaemon(True)
i+=1
return
def _output():
t.grid(column=0,row=5,columnspan=4,pady=10)
About.grid(column=1,row=6,columnspan=2)
output.state(['disabled'])
def _Set(*args):
def _savadir():
dirname = filedialog.askdirectory()
FILEDIR=dirname
textin('存储路径修改为：'+FILEDIR)
direction.set(FILEDIR)
setwin = Toplevel(root)
setwin.resizable(FALSE,FALSE)
setwin.title('参数设置')
setwin.geometry('500x178+1200+400')
content = ttk.Frame(setwin, padding=(3,3,3,3))
LabelDir = ttk.Label(content, text='文件存储路径')
direction=StringVar()
DIR = ttk.Entry(content,state='readonly',textvariable=direction,width=32)
ok = ttk.Button(content, text="修改",command=_savadir)
content.grid(column=0, row=0,sticky=(N, S, E, W))
LabelDir.grid(column=0, row=0,pady = 5)
DIR.grid(column=1, row=0)
ok.grid(column=2, row=0)
direction.set(FILEDIR)
#DIR.insert(0, FILEDIR)
setwin.mainloop()
def _about():
aboutwin = Toplevel(root)
aboutwin.resizable(FALSE,FALSE)
aboutwin.title('关于我')
aboutwin.geometry('+1200+500')
ll = ttk.Frame(aboutwin, padding=(23,13,23,13))
Labelme = ttk.Label(ll, text='个人主页: www.goldencui.org')
ll.grid(column=0, row=0,sticky=(N, S, E, W))
Labelme.grid(column=0, row=0)
#aboutwin.mainloop()
def _Exit(*args):
exit()
root = Tk()
root.resizable(FALSE,FALSE)
root.title('资源搜索爬虫 Beta1')
root.geometry('+800+400')
content = ttk.Frame(root, padding=(20,3,20,3))
image = PhotoImage(file='title.gif')
Labelurl = ttk.Label(content)
Labelurl['image']=image
lf = ttk.Labelframe(content, text='输入要抓取网址')
namelbl = ttk.Label(lf, text="http://")
url=StringVar()
name = ttk.Entry(lf,textvariable=url)
example = ttk.Label(lf, text="例如:www.baidu.com")
p = ttk.Progressbar(content, orient=HORIZONTAL, length=380, mode='indeterminate')
ok = ttk.Button(content, text="搜索",command=_ok,width=8)
output = ttk.Button(content, text="输出",command=_output,width=8)
Set = ttk.Button(content, text="设置",command=_Set,width=8)
Exit = ttk.Button(content, text="退出",command=_Exit,width=8)
t = Text(content, width=53, height=20,state='disabled',yscrollcommand='yview')
About = ttk.Button(content, text="关于",command=_about,width=10)