我有一个 xml 文件，它描述了代理和客户端之间的对话。双方都有一个 userId，在 newParty 标签中分配。
后续的消息和通知，引用这个userId。我希望在处理消息或通知时，使用 userId 完成查找，将字符串“Agent”或“Client”添加到生成的 HTML 的类属性中。
<?xml version="1.0"?>
<chatTranscript startAt="2016-10-06T09:16:40Z" sessionId="0001GaBYC53D000K">
<newParty userId="007957F616780001" timeShift="1" visibility="ALL" eventId="1">
<userInfo personId="" userNick="John Doe" userType="CLIENT" protocolType="FLEX" timeZoneOffset="120"/>
<userData>
<item key="GMSServiceId">5954d184-f89d-4f44-8c0f-a772d458b353</item>
<item key="IdentifyCreateContact">3</item>
<item key="MediaType">chat</item><item key="TimeZone">120</item>
<item key="_data_id">139-e9826bf5-c5a4-40e5-a729-2cbdb4776a43</item>
<item key="firstName">John</item><item key="first_name">John</item>
<item key="lastName">Doe</item>
<item key="last_name">Doe</item>
<item key="location_lat">37.8197</item>
<item key="location_long">-122.4786</item>
<item key="userDisplayName">John Doe</item>
</userData>
</newParty>
<newParty userId="0079581AF56C0025" timeShift="20" visibility="ALL" eventId="2">
<userInfo personId="1" userNick="allendei" userType="AGENT" protocolType="BASIC" timeZoneOffset="120"/>
</newParty>
<message userId="007957F616780001" timeShift="25" visibility="ALL" eventId="3">
<msgText msgType="text" treatAs="NORMAL">This is message one.</msgText>
</message>
<message userId="0079581AF56C0025" timeShift="35" visibility="ALL" eventId="4">
<msgText msgType="text" treatAs="NORMAL">This is message two.</msgText>
</message>
<notice userId="0079581AF56C0025" timeShift="40" visibility="ALL" eventId="5">
<noticeText noticeType="USER_CUSTOM">This is notice one.</noticeText>
</notice>
<notice userId="007957F616780001" timeShift="58" visibility="ALL" eventId="6">
<noticeText noticeType="USER_CUSTOM">This is notice two.</noticeText>
</notice>
<partyLeft userId="007957F616780001" timeShift="90" visibility="ALL" eventId="4" askerId="007957F616780001">
<reason code="3">left due to disconnect</reason>
</partyLeft>
...我的 xlt 是:
<?xml version="1.0" encoding="UTF-8"?>
<xsl:template match="/chatTranscript">
<html>
<header><xsl:value-of select="@sessionId" /></header>
<xsl:apply-templates select="newParty" />
<xsl:apply-templates select="message/msgText" />
<xsl:apply-templates select="notice/noticeText" />
<xsl:apply-templates select="partyLeft/reason" />
</html>
</xsl:template>
<xsl:template match="newParty[userInfo/@userType='CLIENT']">
<div class="Client" id="{@userId}">
<label>Client: <xsl:value-of select="userInfo/@userNick" /></label>
</div>
</xsl:template>
<xsl:template match="newParty[userInfo/@userType='AGENT']">
<div class="Client" id="{@userId}">
<label>Agent: <xsl:value-of select="userInfo/@userNick" /></label>
</div>
</xsl:template>
<xsl:template match="msgText">
<div class="Messages" id="{../@eventId}">
<label>Message: <xsl:value-of select="text()" /></label>
</div>
</xsl:template>
<xsl:template match="noticeText">
<div class="Notices" id="{../@eventId}">
<label>Notice: <xsl:value-of select="text()" /></label>
</div>
</xsl:template>
<xsl:template match="reason">
<div class="Notices" id="{../@eventId}">
<label>Reason: <xsl:value-of select="text()" /></label>
</div>
</xsl:template>
所需的输出如下 - 消息和通知的类属性(代理或客户端)通过顶部 newParties 中的用户 ID 查找。
<html>
<header>0001GaBYC53D000K</header>
<div class="Client" id="007957F616780001"><label>Client: John Doe</label></div>
<div class="Client" id="0079581AF56C0025"><label>Agent: allendei</label></div>
<div class="Messages,Client" id="3"><label>Message: This is message one.</label></div>
<div class="Messages,Agent" id="4"><label>Message: This is message two.</label></div>
<div class="Notices,Agent" id="5"><label>Notice: This is notice one.</label></div>
<div class="Notices,Client" id="6"><label>Notice: This is notice two.</label></div>
<div class="Notices,Client" id="4"><label>Reason: left due to disconnect</label></div>
最佳答案
XSLT 具有执行查找的内置机制。首先定义一个 key 作为:
<xsl:key name="party" match="newParty" use="@userId" />
然后使用它，如下例所示:
XSLT 1.0
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:strip-space elements="*"/>
<xsl:key name="party" match="newParty" use="@userId" />
<xsl:template match="/chatTranscript">
<html>
<header>
<xsl:value-of select="@sessionId" />
</header>
<xsl:apply-templates/>
</html>
</xsl:template>
<xsl:template match="newParty[userInfo/@userType='CLIENT']">
<div class="Client" id="{@userId}">
<label>Client: <xsl:value-of select="userInfo/@userNick" /></label>
</div>
</xsl:template>
<xsl:template match="newParty[userInfo/@userType='AGENT']">
<div class="Client" id="{@userId}">
<label>Agent: <xsl:value-of select="userInfo/@userNick" /></label>
</div>
</xsl:template>
<xsl:template match="message">
<xsl:variable name="party-class">
<xsl:call-template name="lookup-class"/>
</xsl:variable>
<div class="Messages,{$party-class}" id="{@eventId}">
<label>Message: <xsl:value-of select="msgText" /></label>
</div>
</xsl:template>
<xsl:template match="notice">
<xsl:variable name="party-class">
<xsl:call-template name="lookup-class"/>
</xsl:variable>
<div class="Notices,{$party-class}" id="{@eventId}">
<label>Notice: <xsl:value-of select="noticeText" /></label>
</div>
</xsl:template>
<xsl:template match="partyLeft">
<xsl:variable name="party-class">
<xsl:call-template name="lookup-class"/>
</xsl:variable>
<div class="Notices,{$party-class}" id="{@eventId}">
<label>Reason: <xsl:value-of select="reason" /></label>
</div>
</xsl:template>
<xsl:template name="lookup-class">
<xsl:variable name="party-type" select="key('party', @userId)/userInfo/@userType" />
<xsl:choose>
<xsl:when test="$party-type='CLIENT'">Client</xsl:when>
<xsl:when test="$party-type='AGENT'">Agent</xsl:when>
</xsl:choose>
</xsl:template>
</xsl:stylesheet>
请注意，输出不是有效的 HTML。
关于html - XLT 在 xml 标签之间交叉引用来决定应该添加什么类属性，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/42107424/