java - 输入数据时出现问题

Question

我编写了一个程序，应该以某种方式打印输入。现在我使用逗号来分割输入。但是，输入列表以这种形式提供给我:

10.10.4.0-24
10.100.0.0-16
10.102.0.0-16
10.106.0.0-20
10.117.0.0-16
10.118.0.0-16
10.15.128.0-24

而且这个列表也更长。我只是在它们之间插入逗号并将它们放在同一行，但这非常乏味。我尝试使用 String rawdata[]=raw.split(""); 而不是 String rawdata[]=raw.split(","); 但它没有按照我的意思工作。它不是为每个输入打印所需的输出，而是像这样打印:

 Enter ip addresses separated by commas, no spaces(e.g. 10.105.128.0-19,10.120.192.0-22).
10.10.4.0-24
10.100.0.0-16
10.102.0.0-16
10.106.0.0-20
10.117.0.0-16
10.118.0.0-16

set network virtual-router VR-TZ7 routing-table ip static-route 10.118.0.0-16-TSA_TZ nexthop ip-address 10.22.238.99
set network virtual-router VR-TZ7 routing-table ip static-route 10.118.0.0-16-TSA_TZ interface ethernet1/7
set network virtual-router VR-TZ7 routing-table ip static-route 10.118.0.0-16-TSA_TZ metric 10
set network virtual-router VR-TZ7 routing-table ip static-route 10.118.0.0-16-TSA_TZ admin-dist 10
set network virtual-router VR-TZ7 routing-table ip static-route 10.118.0.0-16-TSA_TZ destination 10.118.0.0/16

我的程序中是否可以使用一个分隔符来处理这种格式的数字？

我的程序如下:

import java.util.Scanner;
public class POPprogTSA
{  
public static void main(String[] args)
{

Scanner s = new Scanner(System.in);
System.out.println("Enter ip addresses separated by commas, no spaces(e.g. 10.105.128.0-19,10.120.192.0-22).");
String raw= s.nextLine();
String rawdata[]=raw.split(",");
/*set network virtual-router VR-TZ7 routing-table ip static-route 10.10.4.0-24-TSA_TZ nexthop ip-address 10.22.238.99
set network virtual-router VR-TZ7 routing-table ip static-route 10.10.4.0-24-TSA_TZ interface ethernet1/7
set network virtual-router VR-TZ7 routing-table ip static-route 10.10.4.0-24-TSA_TZ metric 10
set network virtual-router VR-TZ7 routing-table ip static-route 10.10.4.0-24-TSA_TZ admin-dist 10
set network virtual-router VR-TZ7 routing-table ip static-route 10.10.4.0-24-TSA_TZ destination 10.10.4.0/24
*/  
//TSA
for (int i = 0; i<= rawdata.length-1; i++)
{ 

 System.out.println("set network virtual-router VR-TZ7 routing-table ip static-route " + rawdata[i] + "-TSA_TZ nexthop ip-address 10.22.238.99");
 System.out.println("set network virtual-router VR-TZ7 routing-table ip static-route " + rawdata[i] + "-TSA_TZ interface ethernet1/7");
 System.out.println("set network virtual-router VR-TZ7 routing-table ip static-route " + rawdata[i] + "-TSA_TZ metric 10");
 System.out.println("set network virtual-router VR-TZ7 routing-table ip static-route " + rawdata[i] + "-TSA_TZ admin-dist 10");
 System.out.println("set network virtual-router VR-TZ7 routing-table ip static-route " + rawdata[i] + "-TSA_TZ destination " +(rawdata[i].replace("-","/")));
 System.out.println(" ");





}     
}


}

每个数字的结果应该采用以下形式:

set network virtual-router VR-TZ7 routing-table ip static-route 10.10.4.0-24-TSA_TZ nexthop ip-address 10.22.238.99
set network virtual-router VR-TZ7 routing-table ip static-route 10.10.4.0-24-TSA_TZ interface ethernet1/7
set network virtual-router VR-TZ7 routing-table ip static-route 10.10.4.0-24-TSA_TZ metric 10
set network virtual-router VR-TZ7 routing-table ip static-route 10.10.4.0-24-TSA_TZ admin-dist 10
set network virtual-router VR-TZ7 routing-table ip static-route 10.10.4.0-24-TSA_TZ destination 10.10.4.0/24

如有任何建议，我们将不胜感激!

Answer 1

一种选择是让用户一次输入一个输入，但不断提示他们(使用 nextLine() 进行阅读)，直到输入“end”一词。然后，您可以复制行分隔列表并将其粘贴到控制台中；在末尾输入“end”。

或者，如果您希望用户能够将一堆内容复制并粘贴到一行中，您可以使用 .split("[\\s]+") 来允许 条目之间任意数量的空格(包括换行符；尽管 nextLine() 无论如何都会吃掉换行符)。

另一个选项是将列表存储在文本文件中。然后您可以提示用户输入要导入的文件的名称。然后您可以打开该文件并逐行读取它。