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首页 > 解决方案 > 当我在 xslt 中迭代时，如何同时从两个不同的节点/元素中获取文本？

html - 当我在 xslt 中迭代时，如何同时从两个不同的节点/元素中获取文本？

问题描述

所以我有 XML：

<forecast>
        <area aac="NSW_FA001" description="New South Wales" type="region">
            <forecast-period start-time-local="2020-04-13T09:08:07+10:00" end-time-local="2020-04-13T09:08:07+10:00" start-time-utc="2020-04-12T23:08:07Z" end-time-utc="2020-04-12T23:08:07Z">
                <text type="warning_summary_footer">Details of warnings are available on the Bureau's website www.bom.gov.au, by telephone 1300-659-218* or through some TV and radio broadcasts.</text>
                <text type="product_footer">* Calls to 1300 numbers cost around 27.5c incl. GST, higher from mobiles or public phones.</text>
            </forecast-period>
        </area>
        <area aac="NSW_ME006" description="Canberra" type="metropolitan" parent-aac="NSW_FA001">
            <forecast-period index="0" start-time-local="2020-04-13T00:00:00+10:00" end-time-local="2020-04-14T00:00:00+10:00" start-time-utc="2020-04-12T14:00:00Z" end-time-utc="2020-04-13T14:00:00Z">
                <text type="forecast">Some high cloud, clearing by the afternoon. Light winds.</text>
                <text type="uv_alert">Sun protection 9:30am to 2:20pm, UV Index predicted to reach 5 [Moderate]</text>
            </forecast-period>
            <forecast-period index="1" start-time-local="2020-04-14T00:00:00+10:00" end-time-local="2020-04-15T00:00:00+10:00" start-time-utc="2020-04-13T14:00:00Z" end-time-utc="2020-04-14T14:00:00Z">
                <text type="forecast">Areas of fog in the morning. Sunny day. Light winds becoming northwesterly 15 to 20 km/h in the early afternoon then becoming light in the late afternoon.</text>
            </forecast-period>
            <forecast-period index="2" start-time-local="2020-04-15T00:00:00+10:00" end-time-local="2020-04-16T00:00:00+10:00" start-time-utc="2020-04-14T14:00:00Z" end-time-utc="2020-04-15T14:00:00Z">
                <text type="forecast">Patchy morning fog. Mostly sunny day. Light winds.</text>
            </forecast-period>
            <forecast-period index="3" start-time-local="2020-04-16T00:00:00+10:00" end-time-local="2020-04-17T00:00:00+10:00" start-time-utc="2020-04-15T14:00:00Z" end-time-utc="2020-04-16T14:00:00Z">
                <text type="forecast">Partly cloudy. Slight (20%) chance of a shower. Winds northwesterly and light increasing to 20 to 25 km/h during the morning then increasing to 25 to 35 km/h during the day.</text>
            </forecast-period>
            <forecast-period index="4" start-time-local="2020-04-17T00:00:00+10:00" end-time-local="2020-04-18T00:00:00+10:00" start-time-utc="2020-04-16T14:00:00Z" end-time-utc="2020-04-17T14:00:00Z">
                <text type="forecast">Mostly sunny. Winds northwesterly 15 to 20 km/h.</text>
            </forecast-period>
            <forecast-period index="5" start-time-local="2020-04-18T00:00:00+10:00" end-time-local="2020-04-19T00:00:00+10:00" start-time-utc="2020-04-17T14:00:00Z" end-time-utc="2020-04-18T14:00:00Z">
                <text type="forecast">Mostly sunny. Slight (20%) chance of a shower. Light winds.</text>
            </forecast-period>
            <forecast-period index="6" start-time-local="2020-04-19T00:00:00+10:00" end-time-local="2020-04-20T00:00:00+10:00" start-time-utc="2020-04-18T14:00:00Z" end-time-utc="2020-04-19T14:00:00Z">
                <text type="forecast">Partly cloudy. Slight (30%) chance of a shower. Light winds.</text>
            </forecast-period>
        </area>
        <area aac="NSW_PT027" description="Canberra" type="location" parent-aac="NSW_ME006">
            <forecast-period index="0" start-time-local="2020-04-13T08:57:34+10:00" end-time-local="2020-04-14T00:00:00+10:00" start-time-utc="2020-04-12T22:57:34Z" end-time-utc="2020-04-13T14:00:00Z">
                <element type="forecast_icon_code">3</element>
                <element type="air_temperature_maximum" units="Celsius">19</element>
                <text type="precis">Partly cloudy.</text>
                <text type="probability_of_precipitation">0%</text>
            </forecast-period>
            <forecast-period index="1" start-time-local="2020-04-14T00:00:00+10:00" end-time-local="2020-04-15T00:00:00+10:00" start-time-utc="2020-04-13T14:00:00Z" end-time-utc="2020-04-14T14:00:00Z">
                <element type="forecast_icon_code">10</element>
                <element type="air_temperature_minimum" units="Celsius">4</element>
                <element type="air_temperature_maximum" units="Celsius">23</element>
                <text type="precis">Possible early fog then sunny.</text>
                <text type="probability_of_precipitation">0%</text>
            </forecast-period>
            <forecast-period index="2" start-time-local="2020-04-15T00:00:00+10:00" end-time-local="2020-04-16T00:00:00+10:00" start-time-utc="2020-04-14T14:00:00Z" end-time-utc="2020-04-15T14:00:00Z">
                <element type="forecast_icon_code">3</element>
                <element type="air_temperature_minimum" units="Celsius">8</element>
                <element type="air_temperature_maximum" units="Celsius">25</element>
                <text type="precis">Mostly sunny.</text>
                <text type="probability_of_precipitation">0%</text>
            </forecast-period>
            <forecast-period index="3" start-time-local="2020-04-16T00:00:00+10:00" end-time-local="2020-04-17T00:00:00+10:00" start-time-utc="2020-04-15T14:00:00Z" end-time-utc="2020-04-16T14:00:00Z">
                <element type="forecast_icon_code">3</element>
                <element type="air_temperature_minimum" units="Celsius">11</element>
                <element type="air_temperature_maximum" units="Celsius">25</element>
                <text type="precis">Partly cloudy.</text>
                <text type="probability_of_precipitation">20%</text>
            </forecast-period>
            <forecast-period index="4" start-time-local="2020-04-17T00:00:00+10:00" end-time-local="2020-04-18T00:00:00+10:00" start-time-utc="2020-04-16T14:00:00Z" end-time-utc="2020-04-17T14:00:00Z">
                <element type="forecast_icon_code">3</element>
                <element type="air_temperature_minimum" units="Celsius">11</element>
                <element type="air_temperature_maximum" units="Celsius">20</element>
                <text type="precis">Mostly sunny.</text>
                <text type="probability_of_precipitation">10%</text>
            </forecast-period>
            <forecast-period index="5" start-time-local="2020-04-18T00:00:00+10:00" end-time-local="2020-04-19T00:00:00+10:00" start-time-utc="2020-04-17T14:00:00Z" end-time-utc="2020-04-18T14:00:00Z">
                <element type="forecast_icon_code">3</element>
                <element type="air_temperature_minimum" units="Celsius">4</element>
                <element type="air_temperature_maximum" units="Celsius">19</element>
                <text type="precis">Mostly sunny.</text>
                <text type="probability_of_precipitation">20%</text>
            </forecast-period>
            <forecast-period index="6" start-time-local="2020-04-19T00:00:00+10:00" end-time-local="2020-04-20T00:00:00+10:00" start-time-utc="2020-04-18T14:00:00Z" end-time-utc="2020-04-19T14:00:00Z">
                <element type="forecast_icon_code">3</element>
                <element type="precipitation_range">0 to 0.4 mm</element>
                <element type="air_temperature_minimum" units="Celsius">8</element>
                <element type="air_temperature_maximum" units="Celsius">19</element>
                <text type="precis">Partly cloudy.</text>
                <text type="probability_of_precipitation">30%</text>
            </forecast-period>
        </area>
        <area aac="NSW_PT146" description="Tuggeranong" type="location" parent-aac="NSW_ME006">
            <forecast-period index="0" start-time-local="2020-04-13T08:57:34+10:00" end-time-local="2020-04-14T00:00:00+10:00" start-time-utc="2020-04-12T22:57:34Z" end-time-utc="2020-04-13T14:00:00Z">
                <element type="air_temperature_maximum" units="Celsius">19</element>
            </forecast-period>
        </area>
    </forecast>

要获取文本：

4 月 13 日星期一剩余时间的预报 一些高云，下午将转晴。轻风。预报 4 月 14 日星期二剩余时间 上午有雾区。晴天。午后风速为 15 至 20 公里/小时，然后在下午晚些时候变小。预报 4 月 15 日星期三剩余时间 晨雾斑驳。大多是晴天。轻风。.... ETC

我用了：

<xsl:variable name ="cb" select="document('cb123.xml')"/>
<xsl:variable name = "canberra_date" select = "$cb/forecast/area[@aac='NSW_ME006']/forecast-period"/>
<b>Canberra Weather</b>
<br></br>
      <xsl:for-each select='$canberra_date'>
      <xsl:text>Forecast for the rest of </xsl:text><xsl:value-of select="format-dateTime(@start-time-local, '[F] [MNn] [D1]', 'en', (), ()) "/>
<br></br>
      <xsl:value-of select="text[@type='forecast']"/>
<br></br>
      </xsl:for-each>

Q1。我如何能够获取上面的文本并将其写入 html 以及节点内的温度：

/forecast/area[@aac='NSW_PT027']/forecast-period/element[@type='air_temperature_maximum'] and 
/forecast/area[@aac='NSW_PT027']/forecast-period/element[@type='air_temperature_minimum']

Q2。我该怎么做才能跳过此循环中的第一个文本？即我不想要“4 月 13 日星期一剩余时间的预测，仅从 4 月 14 日星期二开始以及相应的温度？

期望的输出：

> Forecast for Tuesday 14 April Areas of fog in the morning. Sunny day.
> Light winds becoming northwesterly 15 to 20 km/h in the early 
> afternoon then becoming light in the late afternoon. Min  4 Max 23
> 
> Forecast for Wednesday 15 April Patchy morning fog. Mostly sunny day.
> Light winds. Min  8 Max 25 ....

像这样的东西..谢谢！

标签： htmlxmlxslt

解决方案

这是一种可以做到的方法。根据您的需要调整布局。

<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
    xmlns:xs="http://www.w3.org/2001/XMLSchema"
    version="1.0">

  <xsl:output method="html" indent="yes"/>

  <xsl:template match="/">
    <html>
      <head>
        <title>Weather Forecast</title>
      </head>
      <body>
        <b>Canberra Weather</b>
        <br/>
        <xsl:for-each select="forecast/area[@aac='NSW_ME006']/forecast-period[position()!=1]"> <!-- Skip first forecast-period -->
            <xsl:variable name="currentF" select="."/>
            <xsl:text>Forecast for the rest of </xsl:text><xsl:value-of select="format-dateTime(@start-time-local, '[F] [MNn] [D1]', 'en', (), ()) "/>
            <xsl:value-of select="text[@type='forecast']"/>
            <br/>
            Min <xsl:value-of select="//area[@parent-aac=$currentF/../@aac]/forecast-period[@start-time-local=$currentF/@start-time-local]/element[@type='air_temperature_minimum']"/>
            <br/>
            Max <xsl:value-of select="//area[@parent-aac=$currentF/../@aac]/forecast-period[@start-time-local=$currentF/@start-time-local]/element[@type='air_temperature_maximum']"/>
            <br/><br/>
        </xsl:for-each>
      </body>
    </html>

  </xsl:template>

</xsl:stylesheet>

看到它在这里工作：https ://xsltfiddle.liberty-development.net/gVhDDzf

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