def parse_third(self,response):
Index_Url = response.meta['Index_Url']
Target_Detail_Page = response.meta.get('Target_Detail_Page',None)
Final_Xpath = response.meta.get('Final_Xpath',None)
detail_url = Relative_to_Absolute(Index_Url,response.xpath(Target_Detail_Page['xpath']).extract(),self.name)
Some_Info = {}
if 'Some_Info' in Target_Detail_Page.keys():
keys = Target_Detail_Page['Some_Info'].keys()
for key in keys:
try:
Some_Info[key] = response.xpath(Target_Detail_Page['Some_Info'][key]).extract()[0]
except Exception,e:
print Exception,":",e
def parse_json2(self,response):
Index_Url = response.meta.get('Index_Url',None)
All_Detail_Page = response.meta.get('All_Detail_Page',None)
Signal_Detail_Page = response.meta.get('Signal_Detail_Page',None)
Target_Detail_Page = response.meta.get('Target_Detail_Page',None)
Final_Xpath = response.meta.get('Final_Xpath',None)
detail_url = []
res_json = json.loads(response.body_as_unicode())
#递归读取最底层的key对应的value值，我去，想出来了～～[这里是要for一遍最底层的list，所以要读到len-1处，然后在得到detail_url]
depth = 0
length = len(All_Detail_Page['index'])
while depth < length - 1:
res_json = res_json.get(All_Detail_Page['index'][depth])
depth += 1
#print "now the res_json is %s"%res_json
for i in res_json:
detail_url.append(i.get(All_Detail_Page['index'][length-1]))
try:
detail_url = Relative_to_Absolute(Index_Url,detail_url,self.name)
except Exception,e:
print Exception,":",e
Signal_Detail_Page = response.meta.get('Signal_Detail_Page',None)
Target_Detail_Page = response.meta.get('Target_Detail_Page',None)
Final_Xpath = response.meta.get('Final_Xpath',None)
Some_Info = {}
if 'Some_Info' in All_Detail_Page.keys():
keys = All_Detail_Page['Some_Info'].keys()
for key in keys:
try:
Some_Info[key] = response.xpath(All_Detail_Page['Some_Info'][key]).extract()[0]
except Exception,e:
print Exception,":",e
#一个页面可能会需要多个提取的xpath，这里就指定为一个list了
detail_url = []
for xpath in All_Detail_Page['xpath']:
for url in Relative_to_Absolute(Index_Url,response.xpath(xpath).extract(),self.name):
detail_url.append(url)
#在考虑在每一层加一个判断，相当于如果没有（第一个）要传递给下一层的数据，就直接传递给final_parse（注：在传递给final_parse时需要判断是否需要渲染，这里我暂时先默认都渲染，但是之后可以考虑在config.json的Final_Xpath加一个flag，1表示需要渲染，0表示不需要）
if Signal_Detail_Page is None:
for url in detail_url:
request = Request(url,callback = self.parse_final,dont_filter=True,meta={
'splash':{
'endpoint':'render.html',
'args':{
#只有aiyiyi需要load 10s，才能拿到播放量
'wait':0.5,
'images':0,
'render_all':1
}
}
})