xslt多个插入节点（如果不存在）

时间：2019-01-19 12:25:48

标签： xslt

我想在Maven项目中修改我的pom.xml。我想插入两个不存在的节点（distributionManagement和配置文件）。当我启动此xslt时，它仅插入仅distributionManagement节点，而当我再次运行它时，它将插入配置文件节点。

这是我的xslt：

<?xml version="1.0"?>
<xsl:stylesheet version="2.0"
     xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
     xmlns="http://maven.apache.org/POM/4.0.0"
     xmlns:m="http://maven.apache.org/POM/4.0.0" exclude-result-prefixes="m">

<xsl:output method="xml" omit-xml-declaration="no"  indent="yes" />

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

<xsl:template match="m:project[not(m:profiles)]">
    <project>
        <xsl:apply-templates select="@*|node()"/>
        <profiles>
            <profile>
                <id>dev</id>
                <properties>
                    <env>devel</env>
                    <snapshot>-SNAPSHOT</snapshot>
                </properties>
            </profile>

            <profile>
                <id>prod</id>
                <properties>
                    <env>prod</env>
                    <snapshot></snapshot>
                </properties>
            </profile>
        </profiles>
    </project>
</xsl:template>

<xsl:template match="m:project[not(m:distributionManagement)]">
    <project>
        <xsl:apply-templates select="@*|node()"/>
        <distributionManagement>
            <snapshotRepository>
                <id>xxxx.repo</id>
                <name>xxxx Nexus snapshot repository</name>
                <url>http://xxx/repository/maven-snapshots/</url>
            </snapshotRepository>
            <repository>
                <id>xxx.repo</id>
                <name>xxxx Nexus repository</name>
                <url>http://xxx/repository/maven-releases/</url>
            </repository>
        </distributionManagement>
    </project>
</xsl:template>

这是pom.xml：

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 
http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>2.1.2.RELEASE</version>
    <relativePath /> <!-- lookup parent from repository -->
</parent>
<groupId>com.example</groupId>
<artifactId>TestApp</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>demo</name>
<description>Demo project for Spring Boot</description>

<properties>
    <java.version>1.8</java.version>
</properties>

<dependencies>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-data-jpa</artifactId>
    </dependency>

    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-devtools</artifactId>
        <scope>runtime</scope>
    </dependency>
    <dependency>
        <groupId>org.postgresql</groupId>
        <artifactId>postgresql</artifactId>
        <scope>runtime</scope>
    </dependency>
    <dependency>
        <groupId>org.projectlombok</groupId>
        <artifactId>lombok</artifactId>
        <optional>true</optional>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-test</artifactId>
        <scope>test</scope>
    </dependency>
</dependencies>

<build>
    <plugins>
        <plugin>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-maven-plugin</artifactId>
        </plugin>
    </plugins>
</build>

1 个答案:

答案 0 :(得分：2)

我建议将新值的代码移至参数，然后，至少在XSLT 1中，我认为您可以简单地在模板中检查project，其中两个xsl:if用于您要寻找的两个孩子，如果不存在，请添加它们：

  <xsl:template match="m:project[not(m:profiles) or not(m:distributionManagement)]">
      <xsl:copy>
          <xsl:apply-templates select="@* | node()"/>
          <xsl:if test="not(m:profiles)">
              <xsl:copy-of select="$new-profiles"/>
          </xsl:if>
          <xsl:if test="not(m:distributionManagement)">
              <xsl:copy-of select="$new-dist-man"/>
          </xsl:if>
      </xsl:copy>
  </xsl:template>

完整代码

<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
    xmlns="http://maven.apache.org/POM/4.0.0"
    xmlns:m="http://maven.apache.org/POM/4.0.0"
    exclude-result-prefixes="m"
    version="1.0">

  <xsl:output indent="yes"/>

  <xsl:param name="new-dist-man">
        <distributionManagement>
            <snapshotRepository>
                <id>xxxx.repo</id>
                <name>xxxx Nexus snapshot repository</name>
                <url>http://xxx/repository/maven-snapshots/</url>
            </snapshotRepository>
            <repository>
                <id>xxx.repo</id>
                <name>xxxx Nexus repository</name>
                <url>http://xxx/repository/maven-releases/</url>
            </repository>
        </distributionManagement>      
  </xsl:param>

  <xsl:param name="new-profiles">
        <profiles>
            <profile>
                <id>dev</id>
                <properties>
                    <env>devel</env>
                    <snapshot>-SNAPSHOT</snapshot>
                </properties>
            </profile>

            <profile>
                <id>prod</id>
                <properties>
                    <env>prod</env>
                    <snapshot></snapshot>
                </properties>
            </profile>
        </profiles>      
  </xsl:param>

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

  <xsl:template match="m:project[not(m:profiles) or not(m:distributionManagement)]">
      <xsl:copy>
          <xsl:apply-templates select="@* | node()"/>
          <xsl:if test="not(m:profiles)">
              <xsl:copy-of select="$new-profiles"/>
          </xsl:if>
          <xsl:if test="not(m:distributionManagement)">
              <xsl:copy-of select="$new-dist-man"/>
          </xsl:if>
      </xsl:copy>
  </xsl:template>

</xsl:stylesheet>

使用XSLT 3（可能在Java中使用Maven或Sourceforge的Saxon 9.8或9.9 HE的Java），由于参数是常规序列，因此它变得更加紧凑，我们可以简单地在谓词中测试上下文节点是否没有适当的子代： 

<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
    xmlns:xs="http://www.w3.org/2001/XMLSchema"
    xmlns="http://maven.apache.org/POM/4.0.0"
    xpath-default-namespace="http://maven.apache.org/POM/4.0.0"
    exclude-result-prefixes="#all"
    version="3.0">

  <xsl:mode on-no-match="shallow-copy"/>

  <xsl:output indent="yes"/>

  <xsl:param name="new-dist-man">
        <distributionManagement>
            <snapshotRepository>
                <id>xxxx.repo</id>
                <name>xxxx Nexus snapshot repository</name>
                <url>http://xxx/repository/maven-snapshots/</url>
            </snapshotRepository>
            <repository>
                <id>xxx.repo</id>
                <name>xxxx Nexus repository</name>
                <url>http://xxx/repository/maven-releases/</url>
            </repository>
        </distributionManagement>      
  </xsl:param>

  <xsl:param name="new-profiles">
        <profiles>
            <profile>
                <id>dev</id>
                <properties>
                    <env>devel</env>
                    <snapshot>-SNAPSHOT</snapshot>
                </properties>
            </profile>

            <profile>
                <id>prod</id>
                <properties>
                    <env>prod</env>
                    <snapshot></snapshot>
                </properties>
            </profile>
        </profiles>      
  </xsl:param>

  <xsl:template match="project[not(profiles) or not(distributionManagement)]">
      <xsl:copy>
          <xsl:apply-templates select="@*, node(), $new-profiles[not(current()/profiles)], $new-dist-man[not(current()/distributionManagement)]"/>
      </xsl:copy>
  </xsl:template>

</xsl:stylesheet>

https://xsltfiddle.liberty-development.net/bFN1y8M/

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