Question

我在更改DTD后转换了一些XML文件。

其中一项更改涉及将处理指令更改为其他元素的属性 - 但我无法从指令中选择特定信息。我还没有找到如何使用PI的方法 - 我发现的几乎所有内容都是关于如何创建它们 - 但我确实找到了这个：http://doccookbook.sourceforge.net/html/en/dbc.common.pi.html

例如 - 原始XML：

<?Fm Condition FM8_SYSTEM_HIDEELEMENT Dark%20Grey NO_OVERRIDE hide AsIs?>
<?Fm Condition FM8_TRACK_CHANGES_ADDED Forest%20Green SINGLE_UNDERLINE show AsIs?>
<?Fm Condition FM8_TRACK_CHANGES_DELETED Red STRIKETHROUGH show AsIs?>

<products>
    <?Fm Condstart p-version?>
    <prod>
        <form>inj</form>
        <strength>10, 20, 50</strength>
    </prod>
    <?Fm Condend p-version?>

    <?Fm Condstart e-version?>
    <prod>
        <form>inj</form>
        <strength>10</strength>
        <packsize>0.4&nbsp;mL (syringe), 4</packsize>
    </prod>
    <prod>
        <form>inj</form>
        <strength>20</strength>
        <packsize>0.4&nbsp;mL (syringe), 4</packsize>
    </prod>
    <prod>
        <form>inj</form>
        <strength>50</strength>
        <packsize>0.4&nbsp;mL (syringe), 4</packsize>
    </prod>
    <?Fm Condend e-version?>
</products>

我试过这个XSL模板

<xsl:template match="processing-instruction()">
    <xsl:choose>
        <xsl:when test="'Condstart'">
            <xsl:text>ELEPHANTS</xsl:text>
        </xsl:when>

        <xsl:otherwise>
            <xsl:copy />
        </xsl:otherwise>
    </xsl:choose>
</xsl:template>

但它将文档中的所有处理指令转换为＆＃34; ELEPHANTS＆＃34; - 不只是我试图选择的那个。

Answer 1

你想要这样的东西：

<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
 <xsl:output omit-xml-declaration="yes" indent="yes"/>

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

 <xsl:template match=
 "processing-instruction()[starts-with(.,'Condstart')]">
  <xsl:text>ELEPHANTS</xsl:text>
 </xsl:template>
</xsl:stylesheet>

当对提供的（格式正确的）XML文档应用此转换时：

<?Fm Condition FM8_SYSTEM_HIDEELEMENT Dark%20Grey NO_OVERRIDE hide AsIs?>
<?Fm Condition FM8_TRACK_CHANGES_ADDED Forest%20Green SINGLE_UNDERLINE show AsIs?>
<?Fm Condition FM8_TRACK_CHANGES_DELETED Red STRIKETHROUGH show AsIs?>
<products>
    <?Fm Condstart p-version?>
    <prod>
        <form>inj</form>
        <strength>10, 20, 50</strength>
    </prod>
    <?Fm Condend p-version?>
    <?Fm Condstart e-version?>
    <prod>
        <form>inj</form>
        <strength>10</strength>
        <packsize>0.4&#xA0;mL (syringe), 4</packsize>
    </prod>
    <prod>
        <form>inj</form>
        <strength>20</strength>
        <packsize>0.4&#xA0;mL (syringe), 4</packsize>
    </prod>
    <prod>
        <form>inj</form>
        <strength>50</strength>
        <packsize>0.4&#xA0;mL (syringe), 4</packsize>
    </prod>
    <?Fm Condend e-version?>
</products>

产生了想要的正确结果：

<?Fm Condition FM8_SYSTEM_HIDEELEMENT Dark%20Grey NO_OVERRIDE hide AsIs?>
<?Fm Condition FM8_TRACK_CHANGES_ADDED Forest%20Green SINGLE_UNDERLINE show AsIs?>
<?Fm Condition FM8_TRACK_CHANGES_DELETED Red STRIKETHROUGH show AsIs?>
<products>
    ELEPHANTS
    <prod>
        <form>inj</form>
        <strength>10, 20, 50</strength>
    </prod>
    <?Fm Condend p-version?>
    ELEPHANTS
    <prod>
        <form>inj</form>
        <strength>10</strength>
        <packsize>0.4 mL (syringe), 4</packsize>
    </prod>
    <prod>
        <form>inj</form>
        <strength>20</strength>
        <packsize>0.4 mL (syringe), 4</packsize>
    </prod>
    <prod>
        <form>inj</form>
        <strength>50</strength>
        <packsize>0.4 mL (syringe), 4</packsize>
    </prod>
    <?Fm Condend e-version?>
</products>

如何在转换XML时从处理指令中提取信息？

1 个答案: