使用String.split（）在双管（||）上拆分字符串

I'm trying to split the string with double pipe(||) being the delimiter.String looks something like this:

我试图用双管（||）拆分字符串作为delimiter.String看起来像这样：

String str ="[e-mail]||[e-mail]||[e-mail]";

i'm able to split it using the StringTokeniser.The javadoc says the use of this class is discouraged and instead look at String.split as option.

我可以使用StringTokeniser将其拆分.javadoc表示不鼓励使用此类，而是将String.split视为选项。

StringTokenizer token = new StringTokenizer(str, "||");

The above code works fine.But not able to figure out why below string.split function not giving me expected result..

上面的代码工作正常。但是无法弄清楚为什么在string.split函数下面没有给出我预期的结果..

String[] strArry = str.split("\\||");

Where am i going wrong..?

我哪里错了..？

4 个解决方案

#1

String.split() uses regular expressions. You need to escape the string that you want to use as divider.

String.split（）使用正则表达式。您需要转义要用作分隔符的字符串。

Pattern has a method to do this for you, namely Pattern.quote(String s).

Pattern有一个为你做这个的方法，即Pattern.quote（String s）。

String[] split = str.split(Pattern.quote("||"));

#2

You must escape every single | like this str.split("\\|\\|")

你必须逃避每一个|喜欢这个str.split（“\\ | \\ |”）

#3

try this bellow :

试试这个：

String[] strArry = str.split("\\|\\|");

#4

You can try this too...

你也可以尝试一下......

String[] splits = str.split("[\\|]+");

Please note that you have to escape the pipe since it has a special meaning in regular expression and the String.split() method expects a regular expression argument.

请注意，您必须转义管道，因为它在正则表达式中具有特殊含义，而String.split（）方法需要正则表达式参数。