diff --git a/crawler/model/book_scraper.py b/crawler/model/book_scraper.py
index 7c5772f..a6bf397 100644
--- a/crawler/model/book_scraper.py
+++ b/crawler/model/book_scraper.py
@@ -1,31 +1,33 @@
+import re
+
 import mechanize
 
 from lxml import etree
 
 class BookScraper:
+	
 	def __init__(self, id):
 		self.id = id
 	
 	def readers(self):
 		br = mechanize.Browser()
-		
 		has_more_readers = True
 		start = 0
 		result = []
 		
 		while(has_more_readers):
-			has_more_readers = False
 			response = br.open("http://book.douban.com/subject/" + str(self.id) + "/collections?start=" + str(start))
-
 			page_content = response.read()
 			page_dom = etree.HTML(page_content)
 			links = page_dom.xpath("//div[@id='collections_tab']//div[@class='sub_ins']//div[@class='pl2']//a")
-			urls = map(lambda link: link.get("href"), links)
-			print urls
+			reader_urls = map(lambda link: link.get("href"), links)
+			reader_ids = map(lambda url: re.search("http://book.douban.com/people/(.+)/", url).group(0), reader_urls)
+			
+			has_more_readers = len(reader_ids) > 0
+						
+			for reader in reader_ids:
+				result.append(reader)
 			
-			for url in urls:
-				has_more_readers = True
-				result.append(url)
 			start += 20
 				
 		return result
\ No newline at end of file