fix bug: no method findOne
fix bug: no method findOne

wartalker/BlogSpider,alone-walker/BlogSpider,alone-walker/BlogSpider,wartalker/BlogSpider,alone-walker/BlogSpider,alone-walker/BlogSpider,hack4code/BlogSpider,wartalker/BlogSpider,hack4code/BlogSpider,hack4code/BlogSpider,hack4code/BlogSpider,wartalker/BlogSpider