APK 打包问题

<project name="ant" default="release">  
    <!-- ANT环境变量 -->  
    <property environment="env" />  
    <!-- 应用名称 -->  
    <property name="appName" value="${ant.project.name}"/>  
    <!-- SDK目录(获取操作系统环境变量ANDROID_SDK_HOME的值) -->  
    <property name="sdk-folder" value="${env.ANDROID_SDK_HOME}" />  
    <!-- SDK指定平台目录 -->  
    <property name="sdk-platform-folder" value="${sdk-folder}/platforms/android-21"/>  
    <!-- SDK中tools目录 -->  
    <property name="sdk-tools" value="${sdk-folder}/tools" />  
    <!-- SDK指定平台中tools目录 -->  
    <property name="sdk-platform-tools" value="${sdk-platform-folder}/tools" />  

    <!-- 使用到的命令(当前系统为windows,如果系统为linux,可将.bat文件替换成相对应的命令) -->  
    <property name="aapt" value="${sdk-platform-tools}/aapt" />  
    <property name="aidl" value="${sdk-platform-tools}/aidl" />  
    <property name="dx" value="${sdk-platform-tools}/dx.bat" />  
    <property name="apkbuilder" value="${sdk-tools}/apkbuilder.bat" />  
    <property name="jarsigner" value="${env.JAVA_HOME}/bin/jarsigner" />  

    <!-- 编译需要的jar; 如果项目使用到地图服务则需要maps.jar -->  
    <property name="android-jar" value="${sdk-platform-folder}/android.jar" />  
    <property name="android-maps-jar" value="${sdk-folder}/add-ons/addon_google_apis_google_inc_8/libs/maps.jar"/>  

    <!-- 编译aidl文件所需的预处理框架文件framework.aidl -->  
    <property name="framework-aidl" value="${sdk-platform-folder}/framework.aidl" />  

    <!-- 生成R文件的相对目录 -->  
    <property name="outdir-gen" value="gen" />  
    <!-- 编译后的文件放置目录 -->  
    <property name="outdir-bin" value="bin" />  

    <!-- 清单文件 -->  
    <property name="manifest-xml" value="AndroidManifest.xml" />  
    <!-- 源文件目录 -->  
    <property name="resource-dir" value="res" />  
    <property name="asset-dir" value="assets" />  
    <!-- java源文件目录 -->  
    <property name="srcdir" value="src" />  
    <property name="srcdir-ospath" value="${basedir}/${srcdir}" />  
    <!-- 外部类库所在目录 -->  
    <property name="external-lib" value="libs" />  
    <property name="external-lib-ospath" value="${basedir}/${external-lib}" />  

    <!-- 生成class目录 -->  
    <property name="outdir-classes" value="${outdir-bin}" />  
    <property name="outdir-classes-ospath" value="${basedir}/${outdir-classes}" />  

    <!-- classes.dex相关变量 -->  
    <property name="dex-file" value="classes.dex" />  
    <property name="dex-path" value="${outdir-bin}/${dex-file}" />  
    <property name="dex-ospath" value="${basedir}/${dex-path}" />  

    <!-- 经过aapt生成的资源包文件 -->  
    <property name="resources-package" value="${outdir-bin}/resources.ap_" />  
    <property name="resources-package-ospath" value="${basedir}/${resources-package}" />  

    <!-- 未认证apk包 -->  
    <property name="out-unsigned-package" value="${outdir-bin}/${appName}-unsigned.apk" />  
    <property name="out-unsigned-package-ospath" value="${basedir}/${out-unsigned-package}" />  

    <!-- 证书文件 -->  
    <property name="keystore-file" value="${basedir}/re.keystore" />  

    <!-- 已认证apk包 -->  
    <property name="out-signed-package" value="${outdir-bin}/${appName}.apk" />  
    <property name="out-signed-package-ospath" value="${basedir}/${out-signed-package}" />  

    <!-- 初始化工作 -->  
    <target name="init">  
        <echo>Initializing all output directories...</echo>  
        <delete dir="${outdir-bin}" />  
        <mkdir dir="${outdir-bin}" />  
        <mkdir dir="${outdir-classes}" />  
    </target>  

    <!-- 根据工程中的资源文件生成R.java文件  -->  
    <target name="gen-R" depends="init">  
        <echo>Generating R.java from the resources...</echo>  
        <exec executable="${aapt}" failonerror="true">  
            <arg value="package" />  
            <arg value="-f" />  
            <arg value="-m" />  
            <arg value="-J" />  
            <arg value="${outdir-gen}" />  
            <arg value="-S" />  
            <arg value="${resource-dir}" />  
            <arg value="-M" />  
            <arg value="${manifest-xml}" />  
            <arg value="-I" />  
            <arg value="${android-jar}" />  
        </exec>  
    </target>  

    <!-- 编译aidl文件 -->  
    <target name="aidl" depends="gen-R">  
        <echo>Compiling .aidl into java files...</echo>  
        <apply executable="${aidl}" failonerror="true">  
            <!-- 指定预处理文件 -->  
            <arg value="-p${framework-aidl}"/>  
            <!-- aidl声明的目录 -->  
            <arg value="-I${srcdir}"/>  
            <!-- 目标文件目录 -->  
            <arg value="-o${outdir-gen}"/>  
            <!-- 指定哪些文件需要编译 -->  
            <fileset dir="${srcdir}">  
                <include name="**/*.aidl"/>  
            </fileset>  
        </apply>  
    </target>  
    <!-- 将工程中的java源文件编译成class文件 -->  
    <target name="compile" depends="aidl">  
        <echo>Compiling java source code...</echo>  
        <javac encoding="utf-8" target="1.8" srcdir="." destdir="${outdir-classes}" bootclasspath="${android-jar}">  
            <classpath>  
                <fileset dir="${external-lib}" includes="*.jar"/>  
                <filelist>  
                    <file name="${android-maps-jar}"/>  
                </filelist>  
            </classpath>  
        </javac>  
    </target>  
    <!-- 将.class文件转化成.dex文件 -->  
    <target name="dex" depends="compile">  
        <echo>Converting compiled files and external libraries into a .dex file...</echo>  
        <exec executable="${dx}" failonerror="true">  
            <arg value="--dex" />  
            <!-- 输出文件 -->  
            <arg value="--output=${dex-ospath}" />  
            <!-- 要生成.dex文件的源classes和libraries -->  
            <arg value="${outdir-classes-ospath}" />  
            <arg value="${external-lib-ospath}"/>  
        </exec>  
    </target>  
    <!-- 将资源文件放进输出目录 -->  
    <target name="package-res-and-assets">  
        <echo>Packaging resources and assets...</echo>  
        <exec executable="${aapt}" failonerror="true">  
            <arg value="package" />  
            <arg value="-f" />  
            <arg value="-M" />  
            <arg value="${manifest-xml}" />  
            <arg value="-S" />  
            <arg value="${resource-dir}" />  
            <arg value="-A" />  
            <arg value="${asset-dir}" />  
            <arg value="-I" />  
            <arg value="${android-jar}" />  
            <arg value="-F" />  
            <arg value="${resources-package}" />  
        </exec>  
    </target>  
    <!-- 打包成未签证的apk -->  
    <target name="package" depends="dex, package-res-and-assets">  
        <echo>Packaging unsigned apk for release...</echo>  
        <exec executable="${apkbuilder}" failonerror="true">  
            <arg value="${out-unsigned-package-ospath}" />  
            <arg value="-u" />  
            <arg value="-z" />  
            <arg value="${resources-package-ospath}" />  
            <arg value="-f" />  
            <arg value="${dex-ospath}" />  
            <arg value="-rf" />  
            <arg value="${srcdir-ospath}" />  
        </exec>  
        <echo>It will need to be signed with jarsigner before being published.</echo>  
    </target>  
    <!-- 对apk进行签证 -->  
    <target name="jarsigner" depends="package">  
        <echo>Packaging signed apk for release...</echo>  
        <exec executable="${jarsigner}" failonerror="true">  
            <arg value="-keystore" />  
            <arg value="${keystore-file}" />  
            <arg value="-storepass" />  
            <arg value="123456" />  
            <arg value="-keypass" />  
            <arg value="123456" />  
            <arg value="-signedjar" />  
            <arg value="${out-signed-package-ospath}" />  
            <arg value="${out-unsigned-package-ospath}"/>  
            <!-- 不要忘了证书的别名 -->  
            <arg value="re"/>  
        </exec>  
    </target>  
    <!-- 发布 -->  
    <target name="release" depends="jarsigner">  
        <!-- 删除未签证apk -->  
        <delete file="${out-unsigned-package-ospath}"/>  
        <echo>APK is released. path:${out-signed-package-ospath}</echo>  
    </target>  
</project>

上面的打包的XML，但是执行到
[echo] Packaging unsigned apk for release...
[exec] THIS TOOL IS DEPRECATED. See --help for more information.
[exec] java.io.FileNotFoundException: G:\android\svn\HBuilder-Hello\bin\classes.dex does not exist
这里就出错了，求解