Python爬虫---解析---JSONPath

Xpath可以解析本地文件和服务器响应的文件，JSONPath只能解析本地文件

1. 安装jsonpath：pip install jsonpath

注意：需要安装在python解释器相同的位置,例如：D:\Program Files\Python3.11.4\Scripts

2. 使用步骤

2.1 导入：import jsonpath

2.2 使用：

示例1：

# 导包
import jsonpath
import jsonobj = json.load(open("1224-解析-jsonpath.json", "r", encoding="utf-8"))
# print(obj)# 书店所有书的作者
author_list = jsonpath.jsonpath(obj,"$.store.book[*].author")
print(author_list)# 所有的作者
all_author_list= jsonpath.jsonpath(obj,"$..author")
print(all_author_list)# store下面的所有元素
tag_list = jsonpath.jsonpath(obj,"$.store.*")
print(tag_list)# store里面所有东西的price
price_list= jsonpath.jsonpath(obj,"$.store..price")
print(price_list)# 第三个书
book= jsonpath.jsonpath(obj,"$..book[2]")
print(book)# 最后一本书
end_book = jsonpath.jsonpath(obj, "$..book[(@.length-1)]")
print(end_book)# 前两本书
# before_two_book = jsonpath.jsonpath(obj,"$..book[0,1]")
before_two_book = jsonpath.jsonpath(obj,"$..book[:2]")
print(before_two_book)# 过滤出所有包含isbn的书-------条件过滤需要在 () 前面加个 ?
contain_isbn_book = jsonpath.jsonpath(obj, "$..book[?(@.isbn)]")
print(contain_isbn_book)# 哪本书超过了10块钱
over_ten_book = jsonpath.jsonpath(obj,"$..book[?(@.price>10)]")
print(over_ten_book)

json文件：

{"store": {"book": [{"category": "修真","author": "六道","title": "坏蛋是怎样练成的","price": 8.95},{"category": "修真","author": "天蚕土豆","title": "斗破苍穹","price": 12.99},{"category": "修真","author": "唐家三少","title": "斗罗大陆","isbn": "0-553-21311-3","price": 8.99},{"category": "修真","author": "南派三叔","title": "星辰变","isbn": "0-395-19395-8","price": 22.99}],"bicycle": {"color": "黑色","price": 19.95}}
}

示例2：获取淘票票城市名称

import json
import jsonpath
import urllib.requesturl = "https://dianying.taobao.com/cityAction.json?activityId&_ksTS=1703418735341_108&jsoncallback=jsonp109&action=cityAction&n_s=new&event_submit_doGetAllRegion=true"headers = {# 带 冒号 的不能用# ':authority': 'dianying.taobao.com',# ':method': 'GET',# ':path': '/cityAction.json?activityId&_ksTS=1703418735341_108&jsoncallback=jsonp109&action=cityAction&n_s=new&event_submit_doGetAllRegion=true',# ':scheme': 'https','Accept': 'text/javascript, application/javascript, application/ecmascript, application/x-ecmascript, */*; q=0.01',# 这行也不能用# 'Accept-Encoding': 'gzip, deflate, br','Accept-Language': 'zh-CN,zh;q=0.9','Bx-V': '2.5.6','Cookie': 'cna=lZ14HbG2yWQCAQ6bDW7ouWON; t=017bbe5210a298f352a8db14812a276e; cookie2=1441fe3ded83f315b1b19dfc2b9a9e05; v=0; _tb_token_=eb85057357ee1; xlly_s=1; tb_city=110100; tb_cityName="sbG+qQ=="; l=fBxZpp6rNqEgeUwFBO5Clurza77TFIOb4sPzaNbMiIEGa1RP9F_IcNCO6tx2WdtjgTCYLetPx-igEdLHR3VMCc0c07kqm05KFxvtaQtJe; tfstk=eM463YjsPdv12gxMdO1UFp6SAG3fTR_yhIGYZSLwMV3tGZw4LCPagPrIM-yhi10aMxwbLv2jm1DqHxw4Ml5FzaPgsq0xhT7PzJCuyP6y925dL50mk9Rekg77s87O5ASeMhJeUjOtOEaB4ilGt9lBkEUOocMW0vcntysmjYFT5ELYsfise5HC4i8rFAgWcBiklXMPO6tDmF8jN-kGwsXtXXc1U61BInmttXMAO6tkIchn1WfCO3xl.; isg=BKWlkniMLCwIKUkEEWtg7T3NtGHf4ll0cWg1jKeLS1zrvsUwbzLcRHbQSCLIvnEs','Referer': 'https://dianying.taobao.com/?spm=a1z21.3046609.city.1.32c0112aGBdQw9&city=110100','Sec-Ch-Ua': '"Not_A Brand";v="8", "Chromium";v="120", "Google Chrome";v="120"Sec-Ch-Ua-Mobile:?0','Sec-Ch-Ua-Platform': '"Windows"','Sec-Fetch-Dest': 'empty','Sec-Fetch-Mode': 'cors','Sec-Fetch-Site': 'same-origin','User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36','X-Requested-With': 'XMLHttpRequest',
}# 请求对象的定制
request = urllib.request.Request(url=url, headers=headers)# 模拟浏览器向服务器发起请求
response = urllib.request.urlopen(request)
# 获取响应结果
content = response.read().decode("utf-8")
# print(content)   # 打印出来的内容 jsonp109(); 需要去掉，使用split切割# split切割
content = content.split("(")[1].split(")")[0]
# print(content)# json写入文件
with open("1224-解析-jsonpath解析淘票票.json", "w", encoding="utf-8") as fp:fp.write(content)obj = json.load(open("1224-解析-jsonpath解析淘票票.json", "r", encoding="utf-8"))# 获取所有regionName
city_list = jsonpath.jsonpath(obj, "$..regionName")
print(city_list)