我有一个包含用户登录数据的纯文本文件:dtrapaniHCPD-EPD-3687Mon05/13/20139:47:01.72dlibbyHCPD-COS-4611Mon05/13/20139:49:34.55lmurdochHCPD-SDDEB-3736Mon05/13/20139:50:38.48lpatrickHCPD-WIN7-015Mon05/13/20139:57:44.57mlayHCPD-WAR-3744Mon05/13/201310:00:07.94eyoungHCPD-NLCC-0645Mon05/13/201310:03:01.83我正在尝试打印左对齐和右对齐列中