Java Runtime exec无法用于Redis删除查询

Question

我正在尝试从Java运行时运行Redis脚本，但这不起作用。有人可以帮忙吗？

String pattern  =   "a*";
String command  =   "redis-cli --scan --pattern "+pattern+" | xargs redis-cli del";
Runtime rt  =   Runtime.getRuntime();
Process pr  =   rt.exec(command.split(" "));