需要正则表达式来验证字符串

Question

Could you please help in creating a regular expression which can validate the following string of below format in Java?

The string contains key and value separated by a colon(:). These key and value pairs are further separated by either an & or | symbol.

"key:value"|"key:value"&"key:value"|"key:value"

Here key is string which can have only alphabets. Here value is alphanumeric.

Answer 1

("\w+:\w+"[\|\&]?)+

This will match in order:

"
1 or more word characters [a-zA-Z0-9]
:
1 or more word characters [a-zA-Z0-9]
"
0 or 1  | or & character

and this, 1 or more times

And I agree with J. Chomel, this is not higher level regex so with a little bit of research, you should have been able to figure it out yourself.

Have a look at these websites for more info on regex:

http://regexone.com/

http://regex101.com/