XSLT 问题：将元素转换为属性答案

【问题标题】：XSLT issue : convert element to attributeXSLT 问题：将元素转换为属性
【发布时间】：2016-07-21 07:20:57
【问题描述】：

我有以下输入 xml：

    <?xml version="1.0" encoding="UTF-8"?>
<class xmlns:xfa="soommmeee-tteexxxxtttttt">
    <students>
    ------
    ------
    ------
    ------
    </students>
    <students>
        <id>B</id>
        <name>jzvxcbhjnba</name>
        <description>mjZSVxcj</description>
        <student>
            <id>3</id>
            <refObjectId>m8</refObjectId>
            <subject>
                <id>91</id>
                <name>humanities</name>
                <friend>hercules</friend>
                <firstname>
                    <textContent>
                        <Id>m954</Id>
                        <title xfa:contentType="text/html">
                            <body>Title</body>
                        </title>
                        <text xfa:contentType="text/html">
                            <body>Current</body>
                        </text>
                        <Key>Title</Key>
                    </textContent>
                    <textContent>
                        <Id>m9542</Id>
                        <title xfa:contentType="text/html">
                            <body>SubTitle</body>
                        </title>
                        <text xfa:contentType="text/html">
                            <body>Sr</body>
                        </text>
                        <Key>SubTitle</Key>
                    </textContent>
                    <isDisplay>false</isDisplay>
                </firstname>
                <lastname>
                    <Detail>
                        <lastNameDetail>
                            <fragId>aksbgdk</fragId>
                            <znjdvgsc>zsdbZXSBGCDSNXCJK</znjdvgsc>
                            <zmdcb>slzdhfksjfml</zmdcb>
                        </lastNameDetail>
                    </Detail>
                </lastname>
            </subject>
        </student>
        <student>
            <id>3</id>
            <refObjectId>m8</refObjectId>
            <subject>
                <id>91</id>
                <name>humanities</name>
                <friend>aladin</friend>
                <firstname>
                    <textContent>
                        <Id>m954</Id>
                        <title xfa:contentType="text/html">
                            <body>Title</body>
                        </title>
                        <text xfa:contentType="text/html">
                            <body>Current</body>
                        </text>
                        <Key>Title</Key>
                    </textContent>
                    <textContent>
                        <Id>m9542</Id>
                        <title xfa:contentType="text/html">
                            <body>SubTitle</body>
                        </title>
                        <text xfa:contentType="text/html">
                            <body>Sr</body>
                        </text>
                        <Key>SubTitle</Key>
                    </textContent>
                    <isDisplay>false</isDisplay>
                </firstname>
                <lastname>
                    <Detail>
                        <lastNameDetail>
                            <fragId>aksbgdk</fragId>
                            <znjdvgsc>zsdbZXSBGCDSNXCJK</znjdvgsc>
                            <zmdcb>slzdhfksjfml</zmdcb>
                        </lastNameDetail>
                    </Detail>
                </lastname>
            </subject>
        </student>
        <student>
            <id>3</id>
            <refObjectId>m8</refObjectId>
            <subject>
                <id>91</id>
                <name>humanities</name>
                <friend>aladin</friend>
                <firstname>
                    <textContent>
                        <Id>m954</Id>
                        <title xfa:contentType="text/html">
                            <body>Title</body>
                        </title>
                        <text xfa:contentType="text/html">
                            <body>Current</body>
                        </text>
                        <Key>Title</Key>
                    </textContent>
                    <textContent>
                        <Id>m9542</Id>
                        <title xfa:contentType="text/html">
                            <body>SubTitle</body>
                        </title>
                        <text xfa:contentType="text/html">
                            <body>Sr</body>
                        </text>
                        <Key>SubTitle</Key>
                    </textContent>
                    <isDisplay>false</isDisplay>
                </firstname>
                <lastname>
                    <Detail>
                        <lastNameDetail>
                            <fragId>aksbgdk</fragId>
                            <znjdvgsc>zsdbZXSBGCDSNXCJK</znjdvgsc>
                            <zmdcb>slzdhfksjfml</zmdcb>
                        </lastNameDetail>
                    </Detail>
                </lastname>
            </subject>
        </student>
        <student>
            <id>4</id>
            <refObjectId>m3</refObjectId>
            <subject>
                <id>75</id>
                <name>PCM</name>
                <friend>hercules</friend>
                <firstname>
                    <textContent>
                        <Id>j4423</Id>
                        <title xfa:contentType="text/html">
                            <body>Title</body>
                        </title>
                        <text xfa:contentType="text/html">
                            <body>dfzxsdbjchA</body>
                        </text>
                        <Key>zdbgcfjkbna</Key>
                    </textContent>
                    <textContent>
                        <Id>m95</Id>
                        <title xfa:contentType="text/html">
                            <body>zdjbhfjkcda</body>
                        </title>
                        <text xfa:contentType="text/html">
                            <body>sdjkhzjk</body>
                        </text>
                        <Key>mzsdjkbjk</Key>
                    </textContent>
                    <isDisplay>true</isDisplay>
                </firstname>
                <lastname>
                    <Detail>
                        <lastNameDetail>
                            <fragId>sdbnfn</fragId>
                            <znjdvgsc>masdjkljk</znjdvgsc>
                            <zmdcb>msjkldbhfjkn</zmdcb>
                        </lastNameDetail>
                    </Detail>
                </lastname>
            </subject>
        </student>
    </students>
    <students>
    --------
    -------
    ---------
    --------
    </students>
    <faculty>
        <configuration>
            <Type>Output</Type>
            <Key>Font</Key>
            <Value>10pt</Value>
        </configuration>
        <configuration>
            <Type>Out</Type>
            <Key>Text</Key>
            <Value>127,127,127</Value>
        </configuration>
        <configuration>
            <Type>put</Type>
            <Key>Slide</Key>
            <Value>18pt</Value>
        </configuration>
        <configuration>
            <Type>utp</Type>
            <Key>Slide</Key>
            <Value>127</Value>
        </configuration>
    </faculty>
    <Info />
    <Dean>
        <name>zcdfjkaqbkd</name>
    </Dean>
</class>

我想要做的是每个父节点的子节点“id”，它可能存在也可能不存在于每棵树中，应该成为其父节点的属性，并且应该从 xml 中永久删除 id 节点。

我使用的是 xslt 1.0，下面是我的 xsl 文件：

<?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" exclude-result-prefixes="xs"
    version="1.0">
    <xsl:output  indent="yes" />
    <xsl:strip-space elements="*"/>
<xsl:template match="node()|@*">
    <xsl:copy>
        <xsl:apply-templates
            select="@*|node()" />
    </xsl:copy>
</xsl:template> 
<xsl:template match="id" />
<xsl:template match="subject">
    <subject id="{id}">
        <xsl:copy>
            <xsl:apply-templates select="child::node()" />
        </xsl:copy>         
    </subject>
</xsl:template>
<xsl:template match="students">
    <students id="{id}">
        <xsl:copy>
            <xsl:apply-templates select="child::node()" />
        </xsl:copy>
    </students>
</xsl:template>
<xsl:template match="student">
    <student id="{id}">
        <xsl:copy>
            <xsl:apply-templates select="child::node()" />
        </xsl:copy>
    </student>
</xsl:template>
</xsl:stylesheet>

我的 xslt 正在做什么，它正在根据需要在父节点中创建属性，它正在根据需要删除 id 节点，但它正在创建父节点的新副本附上我目前的输出：

<?xml version="1.0" encoding="UTF-8"?><class xmlns:xfa="soommmeee-tteexxxxtttttt">
<students id="A">
<students>
-----
-----
------
</students>
</students>
<students id="B">
<students>
<name>jzvxcbhjnba</name>
<description>mjZSVxcj</description>
<student id="3">
<student>
<refObjectId>m8</refObjectId>
<subject id="91">
<subject>
<name>humanities</name>
<friend>hercules</friend>
<firstname>
<textContent>
<Id>m954</Id>
<title xfa:contentType="text/html">
<body>Title</body>
</title>
<text xfa:contentType="text/html">
<body>Current</body>
</text>
<Key>Title</Key>
</textContent>
<textContent>
<Id>m9542</Id>
<title xfa:contentType="text/html">
<body>SubTitle</body>
</title>
<text xfa:contentType="text/html">
<body>Sr</body>
</text>
<Key>SubTitle</Key>
</textContent>
<isDisplay>false</isDisplay>
</firstname>
<lastname>
<Detail>
<lastNameDetail>
<fragId>aksbgdk</fragId>
<znjdvgsc>zsdbZXSBGCDSNXCJK</znjdvgsc>
<zmdcb>slzdhfksjfml</zmdcb>
</lastNameDetail>
</Detail>
</lastname>
</subject>
</subject>
</student>
</student>
<student id="3">
<student>
<refObjectId>m8</refObjectId>
<subject id="91">
<subject>
<name>humanities</name>
<friend>aladin</friend>
<firstname>
<textContent>
<Id>m954</Id>
<title xfa:contentType="text/html">
<body>Title</body>
</title>
<text xfa:contentType="text/html">
<body>Current</body>
</text>
<Key>Title</Key>
</textContent>
<textContent>
<Id>m9542</Id>
<title xfa:contentType="text/html">
<body>SubTitle</body>
</title>
<text xfa:contentType="text/html">
<body>Sr</body>
</text>
<Key>SubTitle</Key>
</textContent>
<isDisplay>false</isDisplay>
</firstname>
<lastname>
<Detail>
<lastNameDetail>
<fragId>aksbgdk</fragId>
<znjdvgsc>zsdbZXSBGCDSNXCJK</znjdvgsc>
<zmdcb>slzdhfksjfml</zmdcb>
</lastNameDetail>
</Detail>
</lastname>
</subject>
</subject>
</student>
</student>
<student id="3">
<student>
<refObjectId>m8</refObjectId>
<subject id="91">
<subject>
<name>humanities</name>
<friend>aladin</friend>
<firstname>
<textContent>
<Id>m954</Id>
<title xfa:contentType="text/html">
<body>Title</body>
</title>
<text xfa:contentType="text/html">
<body>Current</body>
</text>
<Key>Title</Key>
</textContent>
<textContent>
<Id>m9542</Id>
<title xfa:contentType="text/html">
<body>SubTitle</body>
</title>
<text xfa:contentType="text/html">
<body>Sr</body>
</text>
<Key>SubTitle</Key>
</textContent>
<isDisplay>false</isDisplay>
</firstname>
<lastname>
<Detail>
<lastNameDetail>
<fragId>aksbgdk</fragId>
<znjdvgsc>zsdbZXSBGCDSNXCJK</znjdvgsc>
<zmdcb>slzdhfksjfml</zmdcb>
</lastNameDetail>
</Detail>
</lastname>
</subject>
</subject>
</student>
</student>
<student id="4">
<student>
<refObjectId>m3</refObjectId>
<subject id="75">
<subject>
<name>PCM</name>
<friend>hercules</friend>
<firstname>
<textContent>
<Id>j4423</Id>
<title xfa:contentType="text/html">
<body>Title</body>
</title>
<text xfa:contentType="text/html">
<body>dfzxsdbjchA</body>
</text>
<Key>zdbgcfjkbna</Key>
</textContent>
<textContent>
<Id>m95</Id>
<title xfa:contentType="text/html">
<body>zdjbhfjkcda</body>
</title>
<text xfa:contentType="text/html">
<body>sdjkhzjk</body>
</text>
<Key>mzsdjkbjk</Key>
</textContent>
<isDisplay>true</isDisplay>
</firstname>
<lastname>
<Detail>
<lastNameDetail>
<fragId>sdbnfn</fragId>
<znjdvgsc>masdjkljk</znjdvgsc>
<zmdcb>msjkldbhfjkn</zmdcb>
</lastNameDetail>
</Detail>
</lastname>
</subject>
</subject>
</student>
</student>
</students>
</students>
<students id="B">
<students>
----
-----
-----
----
</students>
</students>
<faculty>
<configuration>
<Type>Output</Type>
<Key>Font</Key>
<Value>10pt</Value>
</configuration>
<configuration>
<Type>Out</Type>
<Key>Text</Key>
<Value>127,127,127</Value>
</configuration>
<configuration>
<Type>put</Type>
<Key>Slide</Key>
<Value>18pt</Value>
</configuration>
<configuration>
<Type>utp</Type>
<Key>Slide</Key>
<Value>127</Value>
</configuration>
</faculty>
<Info/>
<Dean>
<name>zcdfjkaqbkd</name>
</Dean>
</class>

请帮忙...我卡在这里！！！

【问题讨论】：

标签： xml xslt xslt-1.0

【解决方案1】：

它正在创建“父”节点的副本，因为您正在使用xsl:copy 以及手动创建新节点。 xsl:copy 将创建当前节点的副本，因此您最终会得到两个。使用<student id="{id}"> 手动创建的和使用xsl:copy 复制的。

所以，你的模板应该看起来像这样：

<xsl:template match="subject">
    <subject id="{id}">
        <xsl:apply-templates />
    </subject>
</xsl:template>

但是，您可以使您的 XSLT 更通用，以匹配具有子 id 节点的任何元素。

试试这个 XSLT

<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
    xmlns:xs="http://www.w3.org/2001/XMLSchema" exclude-result-prefixes="xs"
    version="1.0">
    <xsl:output  indent="yes" />
    <xsl:strip-space elements="*"/>

    <xsl:template match="node()|@*">
        <xsl:copy>
            <xsl:apply-templates
                select="@*|node()" />
        </xsl:copy>
    </xsl:template> 

    <xsl:template match="id" />

    <xsl:template match="*[id]">
        <xsl:copy>
            <xsl:attribute name="id">
                <xsl:value-of select="id" />
            </xsl:attribute>
            <xsl:apply-templates />
        </xsl:copy>
    </xsl:template>
</xsl:stylesheet>

【讨论】：