웹사이트 확인 코드를 식별하려면 Python에서 pytesseract를 호출하세요.

#-*-coding=utf-8-*-
__author__='zhongtang'
 
import urllib
import urllib2
import cookielib
import math
import random
import time
import os
import htmltool
from pytesseract import *
from PIL import Image
from PIL import ImageEnhance
import re
 
class orclnypcg:
  def __init__(self):
    self.baseUrl='http://jbywcg.****.com.cn'
    self.ht=htmltool.htmltool()
    self.curPath=self.ht.getPyFileDir()
    self.authCode=''
     
  def initUrllib2(self):
    try:
      cookie = cookielib.CookieJar()
      cookieHandLer = urllib2.HTTPCookieProcessor(cookie)
      httpHandLer=urllib2.HTTPHandler(debuglevel=0)
      httpsHandLer=urllib2.HTTPSHandler(debuglevel=0)
    except:
      raise
    else:
       opener = urllib2.build_opener(cookieHandLer,httpHandLer,httpsHandLer)
       opener.addheaders = [('User-Agent','Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.11 (KHTML, like Gecko) Chrome/23.0.1271.64 Safari/537.11')]
       urllib2.install_opener(opener)
        
  def urllib2Navigate(self,url,data={}):      #定义连接函数，有超时重连功能
    tryTimes = 0
    while True:
      if (tryTimes>20):
        print u"多次尝试仍无法链接网络，程序终止"
        break
      try:
        if (data=={}):
          req = urllib2.Request(url)
        else:
          req = urllib2.Request(url,urllib.urlencode(data))
        response =urllib2.urlopen(req)
        bodydata = response.read()
        headerdata = response.info()
        if headerdata.get('Content-Encoding')=='gzip':
          rdata = StringIO.StringIO(bodydata)
          gz = gzip.GzipFile(fileobj=rdata)
          bodydata = gz.read()
          gz.close()
        tryTimes = tryTimes +1
      except urllib2.HTTPError, e:
       print 'HTTPError[%s]\n' %e.code        
      except urllib2.URLError, e:
       print 'URLError[%s]\n' %e.reason  
      except socket.error:
        print u"连接失败，尝试重新连接"
      else:
        break
    return bodydata,headerdata
   
  def randomCodeOcr(self,filename):
    image = Image.open(filename)
    #使用ImageEnhance可以增强图片的识别率
    #enhancer = ImageEnhance.Contrast(image)
    #enhancer = enhancer.enhance(4)
    image = image.convert('L')
    ltext = ''
    ltext= image_to_string(image)
    #去掉非法字符，只保留字母数字
    ltext=re.sub("\W", "", ltext)
    print u'[%s]识别到验证码:[%s]!!!' %(filename,ltext)
    image.save(filename)
    #print ltext
    return ltext
 
  def getRandomCode(self):
    #开始获取验证码
    #http://jbywcg.****.com.cn/CommonPage/Code.aspx?0.9409255818463862
    i = 0
    while ( i<=100):
      i += 1
      #拼接验证码Url
      randomUrlNew=&#39;%s/CommonPage/Code.aspx?%s&#39; %(self.baseUrl,random.random())
      #拼接验证码本地文件名
      filename= &#39;%s.png&#39; %(i)
      filename= os.path.join(self.curPath,filename)
      jpgdata,jpgheader = self.urllib2Navigate(randomUrlNew)
      if len(jpgdata)<= 0 :
        print u&#39;获取验证码出错！\n&#39;
        return False
      f = open(filename, &#39;wb&#39;)
      f.write(jpgdata)
      #print u"保存图片:",fileName
      f.close()
      self.authCode = self.randomCodeOcr(filename)
 
 
#主程序开始
orcln=orclnypcg()
orcln.initUrllib2()
orcln.getRandomCode()