Cheeriojs 遍历 xml 响应

Posted 2023-02-16

【中文标题】Cheeriojs 遍历 xml 响应

【英文标题】：cheeriojs iterate over xml response

【发布时间】：2021-10-11 03:13:03

【问题描述】：

假设我有一个来自如下请求的 xml 响应：

<?xml version="1.0" encoding="UTF-8"?>
<?xml-stylesheet type="text/xsl" href="/xsl/someExcelSheet.xsl"?>
<events>
  <event onair="true">
    <type>Live</type>
    <title>Nyhederne - 1/1</title>
    <airtime>09:30:02.13</airtime>
    <id>58529</id>
  </event>
  <event onair="false">
    <type>PrimaryVideo</type>
    <title>MTV1</title>
    <airtime>09:35:02.13</airtime>
    <id>58532</id>
  </event>
  ...

如何使用cheeriojs从中提取数据？

在做

  request(url, (error, response, xml) => 
    if (!error && response.statusCode == 200) 
      const $ = cheerio.load(xml, 
        xmlMode: true,
        decodeEntities: true,
        withStartIndices: false,
        withEndIndices: false,
      )

正在尝试

> $('events')
LoadedCheerio(1) [Element, options: …, _root: LoadedCheerio(1), prevObject: LoadedCheerio(1)]
> $('event')
LoadedCheerio(468) [Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, Element, …]

但无法弄清楚如何使用它。想要获取events 中的所有event 并对其进行迭代并阅读<type>、<title> 等标签中的文本。

我最终做的是

const rows: string[][] = $('event')
  .text()
  .split(/\n/)
  .map((str) => str.trim())
  .join('\n')
  .split(/\n2,/g)
  .reduce((acc, str) => [...acc, str.split(/\n/)], [])

但一定有更好的方法，我希望有人愿意向我解释一下？

【参考方案1】：

这样的事情应该可以帮助您入门：

$('event').get().map(event => 
  return 
    type: $(event).find('type').text(),
    title: $(event).find('title').text(),
    // more props
  
)