火车采集器如何采集json格式数据？

我们在采集网页的时候有的网页数据不能直接在源代码中看到，需要对地址进行抓包处理。一般抓包之后的数据格式是json格式，那么对于json格式的数据我们要怎么采集呢！下面使用腾讯新闻-滚动地址来实际举例说明下。

举例网址：https://new.qq.com/rolls/?ext=ent  实际获取数据的地址：https://pacaio.match.qq.com/openapi/json?key=ent:20200721&num=15&page=0&expIds=&callback=__jp0 这里要注意一下，数据地址中有一个时间的动态参数，要注意设置成yyyyMMdd。这样才能在每天时间更新之后，抓取到每天最新的数据。如果不修改，只会获取到一天的数据。下面是实际获取到的数据代码，如果获取到的代码经常变动的话，抓取标签是一定要匹配正确。

__jp0(
{
"biz": 17002,
"code": 0,
"data": [
{
"article_type": 0,
"comment_id": "5593168460",
"comment_num": 0,
"id": "20200721A077OB",
"irs_imgs": {
"294X195": [
"https://inews.gtimg.com/newsapp_ls/0/12124690803_294195/0"
]
},
"publish_time": "2020-07-21 09:25:14",
"source": "师姐说娱乐",
"source_id": "5415250",
"tag_label": [
[
"旧时光",
"355962"
],
[
"陈德容",
"101520"
],
[
"天心",
"112554"
]
],
"title": "旧时光里的湾湾女星，陈德容天心岳翎，美的各有千秋！",
"url": "https://new.qq.com/omn/20200721/20200721A077OB00.html"
},
{
"article_type": 0,
"comment_id": "5593157982",
"comment_num": 0,
"id": "20200721A07561",
"irs_imgs": {
"294X195": [
"https://inews.gtimg.com/newsapp_ls/0/12124680281_294195/0"
]
},
"publish_time": "2020-07-21 09:22:58",
"source": "清池",
"source_id": "5129013",
"tag_label": [
[
"谁说我结不了婚",
"154338639"
],
[
"三十而已",
"148299941"
],
[
"童瑶",
"84856"
]
],
"title": "从《谁说我结不了婚》到《三十而已》，说童瑶选剧本的眼光",
"url": "https://new.qq.com/omn/20200721/20200721A0756100.html"
},
{
"article_type": 0,
"comment_id": "5593149812",
"comment_num": 0,
"id": "20200721A073GM",
"irs_imgs": {
"294X195": [
"https://inews.gtimg.com/newsapp_ls/0/12124673756_294195/0"
]
},
"publish_time": "2020-07-21 09:21:35",
"source": "娱见现实",
"source_id": "5561154",
"tag_label": [
[
"欧阳娜娜",
"226223"
],
[
"何炅",
"84664"
],
[
"向往的生活",
"299321"
]
],
"title": "欧阳娜娜痛哭，何炅反应很暖心，背后原因暴露娱乐圈现状",
"url": "https://new.qq.com/omn/20200721/20200721A073GM00.html"
},
{
"article_type": 0,
"comment_id": "5593137865",
"comment_num": 0,
"id": "20200721A071FI",
"irs_imgs": {
"294X195": [
"https://inews.gtimg.com/newsapp_ls/0/12124668566_294195/0"
]
},
"publish_time": "2020-07-21 09:19:44",
"source": "80后马里奥",
"source_id": "7027734",
"tag_label": [
[
"trot",
"10160686"
],
[
"卢志勋",
"3720590"
],
[
"爱豆",
"92548"
]
],
"title": "因为算命先生的劝说，他从爱豆变成了Trot歌手，最终获得了成功",
"url": "https://new.qq.com/omn/20200721/20200721A071FI00.html"
},
{
"article_type": 0,
"comment_id": "5593106329",
"comment_num": 0,
"id": "20200721A06VJU",
"irs_imgs": {
"294X195": [
"https://inews.gtimg.com/newsapp_ls/0/12124648118_294195/0"
]
},
"publish_time": "2020-07-21 09:14:49",
"source": "新咖八卦",
"source_id": "5921265",
"tag_label": [
[
"蒋劲夫",
"85312"
],
[
"中浦悠花",
"105076466"
],
[
"小鲜肉",
"204379"
]
],
"title": "如果不是2年前的“中日恋情”，如今的他应该能比肩贾乃亮了吧！",
"url": "https://new.qq.com/omn/20200721/20200721A06VJU00.html"
},
{
"article_type": 0,
"comment_id": "5593098907",
"comment_num": 0,
"id": "20200721A06U5H",
"irs_imgs": {
"294X195": [
"https://inews.gtimg.com/newsapp_ls/0/12124640637_294195/0"
]
},
"publish_time": "2020-07-21 09:13:41",
"source": "环球娱乐资讯",
"source_id": "5021291",
"tag_label": [
[
"不说谎恋人",
"104848432"
],
[
"刘海宽",
"2801582"
],
[
"李哲",
"216335"
]
],
"title": "《不说谎恋人》甜蜜落幕 刘海宽演技自然细腻获好评",
"url": "https://new.qq.com/omn/20200721/20200721A06U5H00.html"
},
{
"article_type": 0,
"comment_id": "5593095563",
"comment_num": 0,
"id": "20200721A06TFZ",
"irs_imgs": {
"294X195": [
"https://inews.gtimg.com/newsapp_ls/0/12124637610_294195/0"
]
},
"publish_time": "2020-07-21 09:13:09",
"source": "一平看世界",
"source_id": "16708619",
"tag_label": [
[
"艾梅柏·希尔德",
"565698"
],
[
"约翰尼·德普",
"3745311"
],
[
"莱昂纳多·迪卡普里奥",
"310052"
]
],
"title": "希尔德称德普指控我与小李子和钱老板偷情，还给他们起侮辱绰号",
"url": "https://new.qq.com/omn/20200721/20200721A06TFZ00.html"
},
{
"article_type": 0,
"comment_id": "5593084597",
"comment_num": 0,
"id": "20200721A06R99",
"irs_imgs": {
"294X195": [
"https://inews.gtimg.com/newsapp_ls/0/12124630466_294195/0"
]
},
"publish_time": "2020-07-21 09:11:22",
"source": "今日影视头条",
"source_id": "5174463",
"tag_label": [
[
"欧阳娜娜",
"226223"
],
[
"何炅",
"84664"
],
[
"浙江卫视",
"213178"
]
],
"title": "欧阳娜娜哭倒在何炅的怀里，怪不得何炅为了她曾暗讽浙江卫视",
"url": "https://new.qq.com/omn/20200721/20200721A06R9900.html"
},
{
"article_type": 0,
"comment_id": "5586683241",
"comment_num": 0,
"id": "20200719A0PAZ6",
"irs_imgs": {
"294X195": [
"https://inews.gtimg.com/newsapp_ls/0/12124619714_294195/0"
]
},
"publish_time": "2020-07-21 09:09:05",
"source": "MU影讯",
"source_id": "5098371",
"tag_label": [
[
"陈百祥",
"102933"
],
[
"黄杏秀",
"554571"
]
],
"title": "陈百祥结婚41年，妻子不孕依然恩爱如初，看到照片全懂了",
"url": "https://new.qq.com/omn/20200719/20200719A0PAZ600.html"
},
{
"article_type": 0,
"comment_id": "5593059904",
"comment_num": 0,
"id": "20200721A06MCS",
"irs_imgs": {
"294X195": [
"https://inews.gtimg.com/newsapp_ls/0/12124614170_294195/0"
]
},
"publish_time": "2020-07-21 09:07:36",
"source": "新咖八卦",
"source_id": "5921265",
"tag_label": [
[
"马伊琍",
"94921"
],
[
"文章",
"81480"
],
[
"离婚",
"88971"
]
],
"title": "文章和马伊琍早就各玩各的？知情人：都各自有对象了",
"url": "https://new.qq.com/omn/20200721/20200721A06MCS00.html"
},
{
"article_type": 0,
"comment_id": "5586570468",
"comment_num": 0,
"id": "20200721A06LZF",
"irs_imgs": {
"294X195": [
"https://inews.gtimg.com/newsapp_ls/0/12124613317_294195/0"
]
},
"publish_time": "2020-07-21 09:07:22",
"source": "伍脊六兽",
"source_id": "5136273",
"tag_label": [
[
"罗志祥",
"139249"
],
[
"周扬青",
"167824"
],
[
"恋情",
"82789"
]
],
"title": "罗志祥晒与妈妈打球日常，恋情事业皆失意，唯有母亲一直不离不弃",
"url": "https://new.qq.com/omn/20200721/20200721A06LZF00.html"
},
{
"article_type": 56,
"comment_id": "5593045351",
"comment_num": 0,
"id": "20200721V06J3N",
"irs_imgs": {
"294X195": [
"https://inews.gtimg.com/newsapp_ls/0/12124592859_294195/0"
]
},
"publish_time": "2020-07-21 09:06:40",
"source": "娱乐圈哔哔King",
"source_id": "5792019",
"tag_label": [],
"title": "佟丽娅即兴跳顶碗舞“大型翻车”，下一秒表演《萨日朗》救场弥补尴尬场面",
"url": "https://new.qq.com/omn/20200721/20200721V06J3N00.html"
},
{
"article_type": 0,
"comment_id": "5593044386",
"comment_num": 0,
"id": "20200721A06IUX",
"irs_imgs": {
"294X195": [
"https://inews.gtimg.com/newsapp_ls/0/12124603853_294195/0"
]
},
"publish_time": "2020-07-21 09:05:04",
"source": "明星粉丝团",
"source_id": "8104",
"tag_label": [
[
"钟晓芹",
"153461968"
],
[
"杨玏",
"3187230"
]
],
"title": "自私冷漠太直男？这个角色要不是他演的，估计得被网暴",
"url": "https://new.qq.com/omn/20200721/20200721A06IUX00.html"
},
{
"article_type": 0,
"comment_id": "5592371602",
"comment_num": 0,
"id": "20200721A02CVJ",
"irs_imgs": {
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"https://inews.gtimg.com/newsapp_ls/0/12124606039_294195/0"
]
},
"publish_time": "2020-07-21 09:05:00",
"source": "音乐汪",
"source_id": "16710428",
"tag_label": [
[
"综艺节目",
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]
],
"title": "《浪姐》的“百万路人盘”遭质疑，终究是综艺节目，认真你就输了",
"url": "https://new.qq.com/omn/20200721/20200721A02CVJ00.html"
},
{
"article_type": 0,
"comment_id": "5593020054",
"comment_num": 0,
"id": "20200721A06DIM",
"irs_imgs": {
"294X195": [
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]
},
"publish_time": "2020-07-21 09:01:14",
"source": "柳林后",
"source_id": "16323570",
"tag_label": [
[
"流浪地球",
"281863"
],
[
"柳林",
"273272"
]
],
"title": "复工首日票价低至4元，《流浪地球》还是加长版",
"url": "https://new.qq.com/omn/20200721/20200721A06DIM00.html"
}
],
"msg": "ok",
"seq": "20200721103741-uYHdlzb7lWmORSky"
}

火车头对于返回的json内容怎么将整个页面的内容全部提取？因为返回的内容经常有变化（前后的特征标签），所以前后截取、和xpath都不能用，正则正常的也没办法，有大神指导怎么采集劝业内容的吗。

这个时候如果想哟啊获取整个页面的内容，可以选择使用正则表达式来实现(?<content>[\s\S]*?)即可。如果要匹配title和url可以选择使用前后截取的方式来获取数据。

如果你还有其它疑问可以来本站搜索相关问题，这里会有你想要的答案：火车脚本网