如何用多个分隔符拆分字符串？

Question

假设我有一个包含以下内容的字符串：

string mystr = "*myid*-myemail-:mypwd:*myid2*-myemail2-:mypwd2:*myid3*-myemail3-:mypwd3:";

并且我想获取每个具有“*”的子字符串，然后将它们添加到一个新字符串中，然后获取每个具有“:”的值与具有“-”的值相同, 所以我尝试使用 split 方法，但它不起作用。

string mystr = "*myid*-myemail-:mypwd:*myid2*-myemail2-:mypwd2:*myid3*-myemail3-:mypwd3:";

string[] myid = mystr.Split('*');
string[] myemail = mystr.Split('-');
string[] mypwd = mystr.Split(':');
string ids = "";
string emails = "";
string pwds = "";

 foreach (string k in myid)
{
    Console.WriteLine("THESE ARE THE IDS");
    Console.WriteLine(k);
}
foreach (string k in myemail)
{
    Console.WriteLine("THESE ARE THE EMAILS");
    Console.WriteLine(k);
}
foreach (string k in mypwd)
{
    Console.WriteLine("THESE ARE THE PASSWORDS");
    Console.WriteLine(k);
}

控制台输出如下：

THESE ARE THE IDS

THESE ARE THE IDS
myid
THESE ARE THE IDS
-myemail-:mypwd:
THESE ARE THE IDS
myid2
THESE ARE THE IDS
-myemail2-:mypwd2:
THESE ARE THE IDS
myid3
THESE ARE THE IDS
-myemail3-:mypwd3:
THESE ARE THE EMAILS
*myid*
THESE ARE THE EMAILS
myemail
THESE ARE THE EMAILS
:mypwd:*myid2*
THESE ARE THE EMAILS
myemail2
THESE ARE THE EMAILS
:mypwd2:*myid3*
THESE ARE THE EMAILS
myemail3
THESE ARE THE EMAILS
:mypwd3:
THESE ARE THE PASSWORDS
*myid*-myemail-
THESE ARE THE PASSWORDS
mypwd
THESE ARE THE PASSWORDS
*myid2*-myemail2-
THESE ARE THE PASSWORDS
mypwd2
THESE ARE THE PASSWORDS
*myid3*-myemail3-
THESE ARE THE PASSWORDS
mypwd3
THESE ARE THE PASSWORDS

这就是我想要的样子：

THESE ARE THE PASSWORDS
mypwd
mypwd2
mypwd3

 THESE ARE THE EMAILs
myemail
myemail2
myemail3

THESE ARE THE IDS
myid
myid2
myid3

Answer 1

您可以为此使用 Regular Expressions：

string mystr = "*myid*-myemail-:mypwd:*myid2*-myemail2-:mypwd2:*myid3*-myemail3-:mypwd3:";
var matches = Regex.Matches(mystr, @"\*(?<Id>[^*]+)\*-(?<Email>[^-]+)-:(?<Password>[^:]+):");

然后，您可以按以下方式访问匹配项：

foreach (Match match in matches)
{
    Console.WriteLine("Id=" + match.Groups["Id"].Value);
    Console.WriteLine("Email=" + match.Groups["Email"].Value);
    Console.WriteLine("Password=" + match.Groups["Password"].Value);
}

或者，如果您想将 ID、电子邮件和密码组合在一起，请使用：

var ids = matches.OfType<Match>().Select(m => m.Groups["Id"].Value);
var emails = matches.OfType<Match>().Select(m => m.Groups["Email"].Value);
var passwords = matches.OfType<Match>().Select(m => m.Groups["Password"].Value);

foreach (string id in ids)
    Console.WriteLine(id);

foreach (string email in emails)
    Console.WriteLine(email);

foreach (string password in passwords)
    Console.WriteLine(password);

Try it online.

但是请注意，这可能会中断，因为电子邮件地址可能包含连字符，而密码可能包含冒号。在这种情况下，您需要为输入文本想出更稳健的格式。

如何用多个分隔符拆分字符串？

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