如何抓住xml中的第一个温度为高，第二个温度为低
提供的xml是每天2天的预测。我需要将其他所有的特征设置为高温，其余的设置为低温。我是初学者，想知道我怎么能在xsl中这样做。我想在一天中做一些事情，但不确定。 感谢您的帮助。
以下xml的示例代码。
`
<forecast>
-<dailyForecastPeriods>
<cloudCoverPercent>58</cloudCoverPercent>
<dewPoint>51.8</dewPoint>
<iconCode>3</iconCode>
<precipCode>1</precipCode>
<precipProbability>0</precipProbability>
<relativeHumidity>50</relativeHumidity>
<summaryDescription>Partly Cloudy</summaryDescription>
<temperature>78</temperature>
<thunderstormProbability>0</thunderstormProbability><windDirectionDegrees>92</windDirectionDegrees>
<windSpeed>4.5</windSpeed>
<detailedDescription>Partly cloudy. Highs in the upper 70s. Southeast winds around 5 mph...Becoming east around 5 mph this afternoon. </detailedDescription><forecastDateLocalStr>2014-07-18T07:00:00</forecastDateLocalStr><forecastDateUtcStr>2014-07-18T11:00:00Z</forecastDateUtcStr><isNightTimePeriod>false</isNightTimePeriod>
</dailyForecastPeriods>-<dailyForecastPeriods>
<cloudCoverPercent>98</cloudCoverPercent>
<dewPoint>59</dewPoint>
<iconCode>81</iconCode>
<precipCode>1</precipCode>
<precipProbability>75</precipProbability>
<relativeHumidity>65</relativeHumidity>
<summaryDescription>30% Chance of Rain</summaryDescription>
<temperature>60</temperature>
<thunderstormProbability>10</thunderstormProbability><windDirectionDegrees>99</windDirectionDegrees>
<windSpeed>6.7</windSpeed>
<detailedDescription>Partly cloudy in the evening...Then mostly cloudy with a chance of showers after midnight. Lows around 60. East winds 5 to 10 mph...Becoming southeast after midnight. Chance of rain 30 percent. </detailedDescription><forecastDateLocalStr>2014-07-18T19:00:00</forecastDateLocalStr><forecastDateUtcStr>2014-07-18T23:00:00Z</forecastDateUtcStr><isNightTimePeriod>true</isNightTimePeriod>
</dailyForecastPeriods>-<dailyForecastPeriods>
<cloudCoverPercent>83</cloudCoverPercent>
<dewPoint>64.4</dewPoint>
<iconCode>89</iconCode>
<precipCode>1</precipCode>
<precipProbability>75</precipProbability>
<relativeHumidity>79</relativeHumidity>
<summaryDescription>50% Chance of Rain</summaryDescription>
<temperature>80</temperature>
<thunderstormProbability>30</thunderstormProbability><windDirectionDegrees>175</windDirectionDegrees>
<windSpeed>8.9</windSpeed>
<detailedDescription>Cloudy with a chance of showers. Highs in the upper 70s. Southeast winds 5 to 10 mph. Chance of rain 50 percent. </detailedDescription><forecastDateLocalStr>2014-07-19T07:00:00</forecastDateLocalStr><forecastDateUtcStr>2014-07-19T11:00:00Z</forecastDateUtcStr><isNightTimePeriod>false</isNightTimePeriod>
</dailyForecastPeriods>-<dailyForecastPeriods>
<cloudCoverPercent>62</cloudCoverPercent>
<dewPoint>64.4</dewPoint>
<iconCode>82</iconCode>
<precipCode>1</precipCode>
<precipProbability>45</precipProbability>
<relativeHumidity>84</relativeHumidity>
<summaryDescription>40% Chance of Rain</summaryDescription>
<temperature>64</temperature>
<thunderstormProbability>10</thunderstormProbability><windDirectionDegrees>169</windDirectionDegrees>
<windSpeed>4.5</windSpeed>
<detailedDescription>Mostly cloudy with a chance of showers. Lows in the lower 60s. Southeast winds 5 to 10 mph. Chance of rain 40 percent. </detailedDescription><forecastDateLocalStr>2014-07-19T19:00:00</forecastDateLocalStr><forecastDateUtcStr>2014-07-19T23:00:00Z</forecastDateUtcStr><isNightTimePeriod>true</isNightTimePeriod>
</dailyForecastPeriods>
</forecast>
`
Sample of xsl
`
<xsl:template match="//forecast">
<xsl:choose>
<xsl:when test="//CUSTOM/WEATHER/TYPE='Compact'" />
<xsl:otherwise>
<xsl:if test="//CUSTOM/WEATHER/HIDE_EXTFORECAST='false'">
<div class="rnd_grouping" style="cursor:pointer;text-align:center;" onclick="javascript:ShowHideSubmodule('extendedForecast', 'upDownForecast', '//MODULE[@id=\'B253588A-437D-4C8E-8BB4-CACA5506567D\']/SUBMODULE/@expanded', true);">
<xsl:text>Extended Forecast</xsl:text>
</div>
<table width="100%" border="0" cellSpacing="0" cellPadding="0" id="extendedForecast">
<xsl:variable name="startIndex">
<xsl:choose>
<xsl:when test="//CUSTOM/WEATHER/SHOWTODAY='true'">
0
</xsl:when>
<xsl:otherwise>
1
</xsl:otherwise>
</xsl:choose>
</xsl:variable>
<xsl:variable name="showToday">
<xsl:choose>
<xsl:when test="//CUSTOM/WEATHER/SHOWTODAY='true'">
0
</xsl:when>
<xsl:otherwise>
1
</xsl:otherwise>
</xsl:choose>
</xsl:variable>
<xsl:variable name="numDays">
<xsl:choose>
<xsl:when test="$devicetype='mobile'">
</xsl:when>
<xsl:otherwise>
<xsl:value-of select="//CUSTOM/WEATHER/NUMDAYS"/>
</xsl:otherwise>
</xsl:choose>
</xsl:variable>
<xsl:if test="//SUBMODULE[@type='Weather']/@expanded=0">
<xsl:attribute name="style">
display:none;
</xsl:attribute>
</xsl:if>
<tr>
<xsl:for-each select="//forecast/dailyForecastPeriods">
<xsl:if test="position() > $startIndex">
<xsl:if test="position() <= ($numDays)+$startIndex">
<td title="{detailedDescription}" align="center" valign="top" class="weatherforecastday">
<xsl:attribute name="width">
<xsl:value-of select="(100 div ($numDays)-$showToday)"/>
<xsl:text disable-output-escaping="yes">%</xsl:text>
</xsl:attribute>
<xsl:choose>
<xsl:when test="position()=1">Today</xsl:when>
<xsl:otherwise>
<!--<xsl:value-of select="dayoftheweek"></xsl:value-of>-->
</xsl:otherwise>
</xsl:choose>
</td>
</xsl:if>
</xsl:if>
</xsl:for-each>
</tr>
<tr>
<xsl:for-each select="//forecast/dailyForecastPeriods">
<xsl:if test="position() > $startIndex">
<xsl:if test="position() <= ($numDays)+$startIndex">
<td title="{detailedDescription}" align="center" valign="top" class="weatherforecastimage">
<xsl:attribute name="width">
<xsl:value-of select="(100 div ($numDays)-$showToday)"/>
<xsl:text disable-output-escaping="yes">%</xsl:text>
</xsl:attribute>
<img src="{img_small}" />
</td>
</xsl:if>
</xsl:if>
</xsl:for-each>
</tr>
<tr>
<xsl:for-each select="//forecast/dailyForecastPeriods">
<xsl:if test="position() > $startIndex">
<xsl:if test="position() <= ($numDays)+$startIndex">
<td title="{detailedDescription}" align="center" valign="top" class="weatherforecasttext">
<xsl:attribute name="width">
<xsl:value-of select="(100 div ($numDays)-$showToday)"/>
<xsl:text disable-output-escaping="yes">%</xsl:text>
</xsl:attribute>
<xsl:value-of select="summaryDescription"></xsl:value-of>
</td>
</xsl:if>
</xsl:if>
</xsl:for-each>
</tr>
<tr>
<xsl:for-each select="//forecast/dailyForecastPeriods">
<xsl:if test="position() > $startIndex">
<xsl:if test="position() <= ($numDays)+$startIndex">
<td title="{detailedDescription}" align="center" valign="top" class="weatherforecasttemp">
<span class="weatherforecasthigh">
<xsl:value-of select="temperature[1]"/>
<xsl:text>°</xsl:text>
</span>
<xsl:text> </xsl:text>
<span class="weatherforecastlow">
<xsl:value-of select="temperature[2]" />
<xsl:text>°</xsl:text>
</span>
</td>
</xsl:if>
</xsl:if>
</xsl:for-each>
</tr>
`
1 个答案:
答案 0 :(得分：0)
提供的xml是每天2天的预测。我需要设置每一个 其他温度到高温，其余为低温。
这可以通过以下方式轻松实现：
XSLT 1.0
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="xml" version="1.0" encoding="UTF-8" indent="yes"/>
<xsl:template match="/">
<table>
<tr>
<th>Date</th>
<th>High</th>
<th>Low</th>
</tr>
<tr>
<td><xsl:value-of select="substring-before(forecast/dailyForecastPeriods[1]/forecastDateLocalStr, 'T')"/></td>
<td><xsl:value-of select="forecast/dailyForecastPeriods[1]/temperature"/></td>
<td><xsl:value-of select="forecast/dailyForecastPeriods[2]/temperature"/></td>
</tr>
<tr>
<td><xsl:value-of select="substring-before(forecast/dailyForecastPeriods[3]/forecastDateLocalStr, 'T')"/></td>
<td><xsl:value-of select="forecast/dailyForecastPeriods[3]/temperature"/></td>
<td><xsl:value-of select="forecast/dailyForecastPeriods[4]/temperature"/></td>
</tr>
</table>
</xsl:template>
</xsl:stylesheet>
或者如果你愿意（这将容纳任何偶数的dailyForecastPeriods）：
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="xml" version="1.0" encoding="UTF-8" indent="yes"/>
<xsl:template match="/">
<table>
<tr>
<th>Date</th>
<th>High</th>
<th>Low</th>
</tr>
<xsl:for-each select="forecast/dailyForecastPeriods[position() mod 2 = 1]">
<tr>
<td><xsl:value-of select="substring-before(forecastDateLocalStr, 'T')"/></td>
<td><xsl:value-of select="temperature"/></td>
<td><xsl:value-of select="following-sibling::dailyForecastPeriods[1]/temperature"/></td>
</tr>
</xsl:for-each>
</table>
</xsl:template>
</xsl:stylesheet>
根据您编辑的输入，结果将是：
<?xml version="1.0" encoding="UTF-8"?>
<table>
<tr>
<th>Date</th>
<th>High</th>
<th>Low</th>
</tr>
<tr>
<td>2014-07-18</td>
<td>78</td>
<td>60</td>
</tr>
<tr>
<td>2014-07-19</td>
<td>80</td>
<td>64</td>
</tr>
</table>
呈现为：
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