def wb_child_comment(self,req):
try:
main_url = "https://weibo.com/aj/v6/comment/big?ajwvr=6&{}&from=singleWeiBo"
# self.get_all_content(req)
#https://weibo.com/aj/v6/comment/big?ajwvr=6&more_comment=big&root_comment_id=4095052063593913&is_child_comment=ture&id=4095051414397198&from=singleWeiBo
url="https://weibo.com/aj/v6/comment/big?ajwvr=6&more_comment=big&root_comment_id=4213888171751114&is_child_comment=tur&id=4095051414397198&from=singleWeiBo"
jsonstr = req.get(url).json()
#r"https://weibo.com/aj/v6/comment/big?ajwvr=6&more_comment=big&root_comment_id=4215074627189144&is_child_comment=ture&id=4095051414397198&from=singleWeiBo").json()
croot = html.fromstring(jsonstr["data"]["html"])
print(croot)
with open("weibocomment3.html", "w", encoding='utf-8') as fs:
fs.write(jsonstr["data"]["html"])
hava_more_node = croot.xpath("//div[@class='list_li_v2']/div[@class='WB_text']/a/@action-data")
while hava_more_node:
hava_more_url = hava_more_node[0]
if hava_more_url:
next_c_url = main_url.format(hava_more_url)
next_jsonstr = req.get(next_c_url).json()
chtml = next_jsonstr["data"]["html"]
with open("weibocomment4.html", "w", encoding='utf-8') as fs:
fs.write(chtml)
croot2 = html.fromstring(chtml)
hava_more_node = croot2.xpath("//div[@class='list_li_v2']/div[@class='WB_text']/a/@action-data")
else:
print("no more")
except:
print("get child comment error")
思路:
1。第一次需要访问的链接是
https://weibo.com/aj/v6/comment/big?ajwvr=6&more_comment=big&root_comment_id=4215074627189144&is_child_comment=ture&id=4095051414397198&from=singleWeiBo
参数说明:
https://weibo.com/aj/v6/comment/big?ajwvr=6&more_comment=big& 前面这些固定
root_comment_id:是一级评论的id
is_child_comment=ture 固定的
id=4095051414397198 这个id目前还不知道干嘛，有知道朋友请赐教
from=singleWeiBo 固定的必须加 这个后面还会用到
2。循环判断是否有更多
获取更多按钮的xpath
hava_more_node = croot.xpath("//div[@class='list_li_v2']/div[@class='WB_text']/a/@action-data")
然后可以获取一个url，拼接完整的url最后在拼接一个重要的参数from=singleWeiBo，如果不加这个参数将取得是一级评论的列表。