如何使用 Nokogiri 在某些标签之后或之前获取文本 [英] How to get text after or before certain tags using Nokogiri

问题描述

我有一个 HTML 文档，如下所示:

I have an HTML document, something like this:

<root><template>title</template>
<h level="3" i="3">Something</h>
<template element="1"><title>test</title></template>
# one
# two
# three
# four
<h level="4" i="5">something1</h>
some random test
<template element="1"><title>test</title></template>
# first
# second
# third
# fourth
<template element="2"><title>testing</title></template>

我想提取:

# one
# two 
# three
# four
# first
# second
# third
# fourth
</root>

换句话说，我想要<template element="1"><title>test</title></template> 之后和下一个标签之前的所有文本在那之后开始."

In other words, I want "all text after <template element="1"><title>test</title></template> and before the next tag that starts after that."

我可以使用 '//root/text()' 获取 root 之间的所有文本，但是如何获取某些标签前后的所有文本?

I can get all text between root using '//root/text()' but how do I get all text before and after certain tags?

推荐答案

这似乎有效:

require 'nokogiri'

xml = '<root>
    <template>title</template>
    <h level="3" i="3">Something</h>
    <template element="1">
        <title>test</title>
    </template>
    # one
    # two
    # three
    # four
    <h level="4" i="5">something1</h>
    some random test
    <template element="1">
        <title>test</title>
    </template>
    # first
    # second
    # third
    # fourth
    <template element="2">
        <title>testing</title>
    </template>
</root>
'

doc = Nokogiri::XML(xml)
text = (doc / 'template[@element="1"]').map{ |n| n.next_sibling.text.strip.gsub(/\n  +/, "\n") }
puts text
# >> # one
# >> # two
# >> # three
# >> # four
# >> # first
# >> # second
# >> # third
# >> # fourth

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