Ant 删除任务出错

Question

我只想删除目录，如果存在。

 <target name="clean">
        <delete dir="${COMP_BUILD}" />
    </target>

这得到错误

clean:
   [delete] Deleting directory U:\id824275_03_2011_06_JUN_ESW\CCS_WSC_ECM\ecm_esw\app\ENT_APP\ESW\bgc-esw-services\build

BUILD FAILED
U:\id824275_03_2011_06_JUN_ESW\CCS_WSC_ECM\ecm_esw\app\BUILD\ESW\ESWBUILD\build.xml:451: The following error occurred while executing this line:
U:\id824275_03_2011_06_JUN_ESW\CCS_WSC_ECM\ecm_esw\app\ENT_APP\ESW\bgc-esw-web\build.xml:207: The following error occurred while executing this line:
U:\id824275_03_2011_06_JUN_ESW\CCS_WSC_ECM\ecm_esw\app\ENT_APP\ESW\bgc-esw-web\build.xml:84: The following error occurred while executing this line:
U:\id824275_03_2011_06_JUN_ESW\CCS_WSC_ECM\ecm_esw\app\ENT_APP\ESW\bgc-esw-services\build.xml:64: Unable to delete directory U:\id824275_03_2011_06_JUN_ESW\CCS_WSC_ECM\ecm_esw\app\ENT_APP\ESW\bgc-esw-services\build\lib

Answer 1

您可以指定 failonerror :

<delete dir="${COMP_BUILD}" failonerror="false"/>

如果目录不存在，这将继续执行。

这样做的问题是，如果目录确实存在，但由于其他原因无法删除，那么它也会继续存在。