我正在用Java开发游戏插件,无法解决。我想收集args[1]
之后的所有内容。这是一些代码,以便您可以更好地理解。
public boolean onCommand(CommandSender sender, Command command, String label, String[] args) {
if(sender instanceof Player) {
Player player = (Player) sender;
if(player.hasPermission("essentials.allow.kick")) {
if(args.length == 0) {
player.sendMessage(ChatColor.RED + "Please specify player name.");
}
if(args.length == 1) {
Player target = Bukkit.getPlayer(args[0]);
if(!target.isValid()) {
player.sendMessage(ChatColor.RED + "That player is not on server!");
}else {
target.kickPlayer(ChatColor.RED + "The kick reason has been told!");
}
}
if(args.length > 1) {
Player target = Bukkit.getPlayer(args[0]);
if(!target.isValid()) {
player.sendMessage(ChatColor.RED + "That player is not on server!");
}
else {
String message = Stream.of(args).skip(2).collect(Collectors.toList()).toString();
target.kickPlayer(ChatColor.RED + message);
}
}
}
}
return true;
}
它仅输出[]
。
答案 0 :(得分:0)
为了收集第n个元素之后的数组的所有元素,可以使用subList(int fromIndex, int toIndex)
类的ArrayList
函数。该文档说:
返回此列表中指定的fromIndex(包括)和toIndex(不包括)之间的视图。
因此,您需要将数组转换为List
,然后在其上调用函数subList
。
List<String> list = Arrays.asList(args).sublist(1, args.length);
// Replace number 1 with the start index where you want to trim. (Inclusive)
现在,如果要将列表转换为字符串,可以使用以下功能:
public String buildMessage(List<String> list, String separator) {
StringBuilder sb = new StringBuilder();
for (String s: list) {
sb.append(s).append(separator);
}
return sb.toString();
}
然后通过以下操作调用它:
String message = buildMessage(list, " "); // It will separate the arguments with spaces.
完整演示
String[] args = new String[]{"Hi!", "I", "am", "a", "demo"};
List<String> list = Arrays.asList(args).sublist(1, args.length);
String message = buildMessage(list, " ");
System.out.println("Message: " + message);
产生的输出:
Message: I am a demo
让我知道这是否适合您!
编辑
如@Holger的评论中所述,您可以将完整的演示简化为:
完整演示
String[] args = new String[]{"Hi!", "I", "am", "a", "demo"};
List<String> list = Arrays.asList(args).sublist(1, args.length);
String message = String.join(" ", list);
System.out.println("Message: " + message);
然后,您将不需要buildMessage
方法。