爬虫 在网页定位验证码，然后显示出来，手动输入验证码，求代码

爬虫，在网页定位验证码，然后不管在哪里显示出来都行，然后手动输入验证码，继续爬，不需要登录，但是需要搜索功能，跪求完整代码，可以想象爬有验证码的百度。

• - 我已经搞定了，直接复制图片链接， 放在img的src里 然后写个输入框 post一起提交过去

http://www.uuwise.com/

识别验证码，你要拿到验证码的图片，然后发送给上面这个网址的地方，他们会返回一个字符串的验证码给你。

验证码是可以机器识别的

如果别人在页面中只是显示图片，那么 你要用正则来获取对应的区域 将里面的图片输出流显示在你想显示的地方
现在目前 要攻破验证码还是比较困难的，因为可以使用KEY来做 页面完全 不需要有验证码的数据 只是图片流而已

以下是部分python代码：

#!usr/bin/env python


#-*- coding: utf-8 -*-


import os
import urllib2
import urllib
import cookielib
import xml.etree.ElementTree as ET


#-----------------------------------------------------------------------------
# Login in www.***.com.cn
def ChinaBiddingLogin(url, username, password):
        # Enable cookie support for urllib2
        cookiejar=cookielib.CookieJar()
        urlopener=urllib2.build_opener(urllib2.HTTPCookieProcessor(cookiejar))
        urllib2.install_opener(urlopener)

        urlopener.addheaders.append(('Referer', 'http://www.chinabidding.com.cn/zbw/login/login.jsp'))
        urlopener.addheaders.append(('Accept-Language', 'zh-CN'))
        urlopener.addheaders.append(('Host', 'www.chinabidding.com.cn'))
        urlopener.addheaders.append(('User-Agent', 'Mozilla/5.0 (compatible; MISE 9.0; Windows NT 6.1); Trident/5.0'))
        urlopener.addheaders.append(('Connection', 'Keep-Alive'))


        print 'XXX Login......'


        imgurl=r'http://www.*****.com.cn/zbw/login/image.jsp'
        DownloadFile(imgurl, urlopener)
        authcode=raw_input('Please enter the authcode:')
        #authcode=VerifyingCodeRecognization(r"http://192.168.0.106/images/code.jpg")


        # Send login/password to the site and get the session cookie
        values={'login_id':username, 'opl':'op_login', 'login_passwd':password, 'login_check':authcode}
        urlcontent=urlopener.open(urllib2.Request(url, urllib.urlencode(values)))
        page=urlcontent.read(500000)


        # Make sure we are logged in, check the returned page content
        if page.find('login.jsp')!=-1:
                print 'Login failed with username=%s, password=%s and authcode=%s' \
                                % (username, password, authcode)
                return False
        else:
                print 'Login succeeded!'
                return True


#-----------------------------------------------------------------------------
# Download from fileUrl then save to fileToSave
# Note: the fileUrl must be a valid file
def DownloadFile(fileUrl, urlopener):
        isDownOk=False


        try:
                if fileUrl:
                        outfile=open(r'/var/www/images/code.jpg', 'w')
                        outfile.write(urlopener.open(urllib2.Request(fileUrl)).read())
                        outfile.close()


                        isDownOK=True
                else:
                        print 'ERROR: fileUrl is NULL!'
        except:
                isDownOK=False


        return isDownOK


#------------------------------------------------------------------------------
# Verifying code recoginization
def VerifyingCodeRecognization(imgurl):
        url=r'http://192.168.0.119:800/api?'
        user='admin'
        pwd='admin'
        model='ocr'
        ocrfile='cbi'


        values={'user':user, 'pwd':pwd, 'model':model, 'ocrfile':ocrfile, 'imgurl':imgurl}
        data=urllib.urlencode(values)


        try:
                url+=data
                urlcontent=urllib2.urlopen(url)
        except IOError:
                print '***ERROR: invalid URL (%s)' % url


        page=urlcontent.read(500000)


        # Parse the xml data and get the verifying code
        root=ET.fromstring(page)
        node_find=root.find('AddField')
        authcode=node_find.attrib['data']


        return authcode


#------------------------------------------------------------------------------
# Read users from configure file
def ReadUsersFromFile(filename):
        users={}
        for eachLine in open(filename, 'r'):
                info=[w for w in eachLine.strip().split()]
                if len(info)==2:
                        users[info[0]]=info[1]


        return users


#------------------------------------------------------------------------------
def main():
        login_page=r'http://www.***.com.cnlogin/login.jsp'
        download_page=r'http://www.***.com.cn***/***?record_id='


        start_id=8593330
        end_id=8595000


        now_id=start_id
        Users=ReadUsersFromFile('users.conf')
        while True:
                for key in Users:
                        if ChinaBiddingLogin(login_page, key, Users[key]):
                                for i in range(3):
                                        pageUrl=download_page+'%d' % now_id
                                        urlcontent=urllib2.urlopen(pageUrl)


                                        filepath='./download/%s.html' % now_id
                                        f=open(filepath, 'w')
                                        f.write(urlcontent.read(500000))
                                        f.close()


                                        now_id+=1
                        else:
                                continue
#------------------------------------------------------------------------------


if __name__=='__main__':
        main()