XSL 模板不匹配

Question

我有一个非常简单的 XSL，我正在尝试匹配 servlet 元素并添加一个子节点。实际上，我需要匹配一个特定的servlet，但是一次只匹配一件事......无论我使用什么模式，除了*之外，模板都不会匹配。我已经尝试过使用和不使用名称空间。我还尝试过绝对路径和相对路径。没有什么。我确信我在这里忽略了一些非常明显的东西。

<?xml version="1.0" encoding="ISO-8859-1"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
        xmlns:jee="http://java.sun.com/xml/ns/javaee"
        xmlns="http://java.sun.com/xml/ns/javaee">
        
    <xsl:output method="xml" encoding="ISO-8859-1"/>

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

    <xsl:template match="servlet">
        <xsl:copy>
            <xsl:apply-templates select="@*"/>
            <init-param>
                <param-name>readonly</param-name>
                <param-value>true</param-value>
            </init-param>
            <xsl:apply-templates select="node()"/>
        </xsl:copy>
    </xsl:template>
</xsl:stylesheet>

XML 中的相关部分（整个文档太大，无法发布）。它只是与 Tomcat 8 捆绑在一起的默认 web.xml，但它是：

<?xml version="1.0" encoding="ISO-8859-1"?>
<!--
  Licensed to the Apache Software Foundation (ASF) under one or more
  contributor license agreements.  See the NOTICE file distributed with
  this work for additional information regarding copyright ownership.
  The ASF licenses this file to You under the Apache License, Version 2.0
  (the "License"); you may not use this file except in compliance with
  the License.  You may obtain a copy of the License at

      http://www.apache.org/licenses/LICENSE-2.0

  Unless required by applicable law or agreed to in writing, software
  distributed under the License is distributed on an "AS IS" BASIS,
  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  See the License for the specific language governing permissions and
  limitations under the License.
-->
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee
                      http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
  version="3.1">

    <servlet>
        <servlet-name>default</servlet-name>
        <servlet-class>org.apache.catalina.servlets.DefaultServlet</servlet-class>
        <init-param>
            <param-name>debug</param-name>
            <param-value>0</param-value>
        </init-param>
        <init-param>
            <param-name>listings</param-name>
            <param-value>false</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>

    <servlet>
        <servlet-name>jsp</servlet-name>
        <servlet-class>org.apache.jasper.servlet.JspServlet</servlet-class>
        <init-param>
            <param-name>fork</param-name>
            <param-value>false</param-value>
        </init-param>
        <init-param>
            <param-name>xpoweredBy</param-name>
            <param-value>false</param-value>
        </init-param>
        <load-on-startup>3</load-on-startup>
    </servlet>

<!--
    <servlet>
        <servlet-name>ssi</servlet-name>
        <servlet-class>
          org.apache.catalina.ssi.SSIServlet
        </servlet-class>
        <init-param>
          <param-name>buffered</param-name>
          <param-value>1</param-value>
        </init-param>
        <init-param>
          <param-name>debug</param-name>
          <param-value>0</param-value>
        </init-param>
        <init-param>
          <param-name>expires</param-name>
          <param-value>666</param-value>
        </init-param>
        <init-param>
          <param-name>isVirtualWebappRelative</param-name>
          <param-value>false</param-value>
        </init-param>
        <load-on-startup>4</load-on-startup>
    </servlet>
-->

<!--
    <servlet>
        <servlet-name>cgi</servlet-name>
        <servlet-class>org.apache.catalina.servlets.CGIServlet</servlet-class>
        <init-param>
          <param-name>cgiPathPrefix</param-name>
          <param-value>WEB-INF/cgi</param-value>
        </init-param>
        <load-on-startup>5</load-on-startup>
    </servlet>
-->

    <!-- The mapping for the default servlet -->
    <servlet-mapping>
        <servlet-name>default</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>

    <!-- The mappings for the JSP servlet -->
    <servlet-mapping>
        <servlet-name>jsp</servlet-name>
        <url-pattern>*.jsp</url-pattern>
        <url-pattern>*.jspx</url-pattern>
    </servlet-mapping>

    <!-- The mapping for the SSI servlet -->
<!--
    <servlet-mapping>
        <servlet-name>ssi</servlet-name>
        <url-pattern>*.shtml</url-pattern>
    </servlet-mapping>
-->

    <!-- The mapping for the CGI Gateway servlet -->

<!--
    <servlet-mapping>
        <servlet-name>cgi</servlet-name>
        <url-pattern>/cgi-bin/*</url-pattern>
    </servlet-mapping>
-->

</web-app>

Answer 1

您可能一直在 stackoverflow 或网络上查看其他一些示例。您的命名空间声明与您尝试转换的 web.xml 不匹配。 “http://java.sun.com/xml/ns/javaee”与“http://xmlns.jcp.org/xml/ns/javaee”不匹配

尝试以下修改后的 XSLT：

<?xml version="1.0" encoding="ISO-8859-1"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
        xmlns:jee="http://xmlns.jcp.org/xml/ns/javaee"
        xmlns="http://xmlns.jcp.org/xml/ns/javaee"
        exclude-result-prefixes="jee">
        
  <xsl:output method="xml" encoding="ISO-8859-1"/>

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

    <xsl:template match="jee:servlet">
        <xsl:copy>
            <!-- copy its children -->
            <xsl:apply-templates select="@* | node()"/>
            <!-- Add a new elements -->
              <init-param>
                  <param-name>readonly</param-name>
                  <param-value>true</param-value>
              </init-param>
        </xsl:copy>
    </xsl:template>
</xsl:stylesheet>