我正在使用Java11.0.11
我已经在linux桌面上安装了ant。然后，为了安装可选的依赖项，我运行文档中的以下命令。 ant -f fetch.xml -Ddest=system 运行后，我收到以下错误。

-setup-temp-cache:

-fetch-netrexx:
      [ftp] getting files
      [ftp] 0 files retrieved

-fetch-netrexx-no-commons-net:

netrexx:
 [checksum] Could not find file /root/.ant/tempcache/NetRexx.zip to generate checksum for.

BUILD FAILED
/usr/local/apache-ant/fetch.xml:368: Could not find file /root/.ant/tempcache/NetRexx.zip to generate checksum for.

Total time: 22 seconds