请高手解决ant部署tomcat问题


题 因为需要持续的构建struts2，采用ANT部署WAR到TOMCAT 5.5.23
但每次UNDEPLOY后，app.WAR没有了，app文件夹依然存在于tomcat的webapps下提示
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CODE:
undeploy:
[undeploy] OK - Undeployed application at context path /struts
deploy:
   [deploy] FAIL - Application already exists at path /strutsbuild.xm
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CODE:
<?xml version="1.0"?><project name="struts" default="init" basedir=".">        <!-- Configure the custom Ant tasks for the Manager application -->
        <taskdef name="deploy" classname="org.apache.catalina.ant.DeployTask" />
        <taskdef name="reload" classname="org.apache.catalina.ant.ReloadTask" />
        <taskdef name="undeploy" classname="org.apache.catalina.ant.UndeployTask" />        <!-- Configure properties to access the Manager application -->
        <property name="url" value="http://127.0.0.1:8888/manager" />
        <property name="username" value="admin" />
        <property name="password" value="88888888" />
        <property name="tomcat_webapps" value="D:\apache-tomcat-5.5.23\webapps" />
        
        <property name="project" value="struts" />        <target name="init">
                <record name="verbose.log" action="start" loglevel="verbose" />
                <record name="debug.log" action="start" loglevel="debug" />
                <path id="path.lib">
                        <fileset dir="lib" includes="**/*.jar" />
                        <fileset dir="libdev" includes="**/*.jar" />
                </path>
        </target>        <target name="war" depends="init">
                <delete dir="build" />                
                <mkdir dir="build/classes" />
                <javac destdir="build/classes" srcdir="src" classpathref="path.lib" />
                <copy todir="build/classes">
                        <fileset dir="src">
                                <include name="**/*.xml" />
                        </fileset>
                </copy>                <war destfile="build/struts.war" webxml="etc/web.xml">
                        <fileset dir="page" />
                        <webinf dir="etc" />
                        <lib dir="lib" />
                        <classes dir="build/classes" />
                </war>                <!--
                <copy 
                        todir="D:\apache-tomcat-5.5.23\webapps" 
                        file="build/struts.war"
                        overwrite="true"
                />
                -->
        </target>        <target name="undeploy">
                <undeploy url="${url}" username="${username}" password="${password}" path="/${project}" />
        </target>        <target name="deploy" depends="war,undeploy">
                <deploy url="${url}" username="${username}" password="${password}" path="/${project}" war="./build/${project}.war" />
        </target>        <target name="reload">
                <reload url="${url}" username="${username}" password="${password}" path="/${project}" />
        </target>
</project>