build failed when using maven call ant tasks "xslt"

This part of the pom.xml

<plugin>
                    <groupId>org.apache.maven.plugins</groupId>
                    <artifactId>maven-antrun-plugin</artifactId>                 
                    <executions>
                        <execution>

                            <id>validate</id>
                            <phase>validate</phase>
                            <configuration>
                                <sourceRoot>${basedir}/target/generated/src/main/java</sourceRoot>
                                <tasks>
                                    <property name="generated.target" value="${basedir}/target/generated" />
                                    <property name="generated.src.test" value="${generated.target}/src/main/java" />
                                    <property name="generated.resources.test" value="${generated.target}/src/main/resources" />
                                    <property name="generated.wsdl.test" value="${generated.resources.test}/" />
                                    <property name="test.resources.dir" location="${basedir}/src/main/resources" />

                                    <mkdir  dir="${generated.resources.test}/wsdl/type_test" />
                                    <xslt classpath="C://saxonhe9-3-0-5j/saxon9he.jar"  style="${test.resources.dir}/wsdl/type_test/type_test_ID_xsd.xsl" in="${test.resources.dir}/wsdl/type_test/type_test.xsd" out="${generated.resources.test}/wsdl/type_test/type_test_1.xsd">
                                          <param name="groupID" expression="1" />
                                    </xslt>

...

This is the error

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-antrun-plugin:1.6:
run (validate) on project cxf-testutils: An Ant BuildException has occured: java
.lang.NoClassDefFoundError: org/apache/xml/serializer/ExtendedContentHandler: or
g.apache.xml.serializer.ExtendedContentHandler -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal o
rg.apache.maven.plugins:maven-antrun-plugi开发者_如何学运维n:1.6:run (validate) on project cxf-te
stutils: An Ant BuildException has occured: java.lang.NoClassDefFoundError: org/
apache/xml/serializer/ExtendedContentHandler
        at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor
.java:217)
        at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor
.java:153)
        at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor
.java:145)

I tried add classpath="C://saxonhe9-3-0-5j/saxon9he.jar" in the xslt tag. But it still throws this exception. I tried Maven 2.2.0 and Maven 3.0.3.JDK 1.6.0 All failed.This pom is actually from apache cxf source code. Anyone can fix it?

UPDATE

I tried many workaround. But this one finally works. Don't change anything in the xslt tag. Just put your xalan jar files into %JAVA-HOME%\jre\lib\endorsed. I download xalan-j_2_7_0. And run cmd
java org.apache.xalan.xslt.EnvironmentCheck to ensure it can find it. It finally works. Huh! It costs me hours to resolve it.

Use the XML Maven Plugin. This supports Saxon virtually out of the box.

Just ran into this issue,and this is what I did to resolve it.

Add dependency for saxon:

<dependency>
    <groupId>net.sf.saxon</groupId>
    <artifactId>Saxon-HE</artifactId>
    <version>9.4</version>
</dependency>

Add the classpath for saxon:

<xslt in="in.xml" out="out.html" style="style.xsl">
  <classpath location="${net.sf.saxon:Saxon-HE:jar}" />
  <factory name="net.sf.saxon.TransformerFactoryImpl"/>
</xslt>