#主程
from baike_spider import url_manager,html_downloader,html_parser,html_outputer

class SpiderMain(object):
    def __init__(self):
        self.urls = url_manager.UrlManager()
        self.downloader = html_downloader.HtmlDownloader()
        self.parser = html_parser.HtmlParser()
        self.outputer = html_outputer.HtmlOutputer()
        
    def craw(self,root_url):
        count = 1
        self.urls.add_new_url(root_url)
        
        while self.urls.has_new_url():
            try:
                new_url = self.urls.get_new_url()
                print 'craw %d: %s' %(count,new_url)
                html_cont = self.downloader.download(new_url)
                new_urls,new_data = self.parser.parse(new_url,html_cont)
                self.urls.add_new_urls(new_urls)
                self.outputer.collect_data(new_data)
            
                if count == 100:
                    break
                count = count + 1
            except:
                print 'craw failed'
        self.outputer.output_html()


if __name__ == "__main__":
    root_url = "http://baike.baidu.com/view/21087.htm"
    obj_spider = SpiderMain()
    obj_spider.craw(root_url)

#错误提示
Traceback (most recent call last):
  File "F:\eclipse\spider\baike_spider\spider_main.py", line 34, in <module>
    obj_spider.craw(root_url)
  File "F:\eclipse\spider\baike_spider\spider_main.py", line 12, in craw
    self.urls.add_new_url(root_url)
  File "F:\eclipse\spider\baike_spider\url_manager.py", line 11, in add_new_url
    if url not in self.new_urls and url not in self.old.urls:
AttributeError: 'UrlManager' object has no attribute 'old'