java - Struts2 Annotations validate String using RegexFieldValidator -

i trying use struts2 annotations validate fields of bean. in case, validate phone number string regex.

i found @regexfieldvalidator annotation, included in class , made tests:

  @requiredstringvalidator(message="phone required.")    @regexfieldvalidator( message="invalid phone",     expression="\\([\\d][\\d][\\d]\\) [\\d][\\d][\\d]-[\\d][\\d][\\d][\\d]")   public void setphone(string phone) {     this.phone = phone;   } 

however, regex expression doesn´t work. tried "\d{9}" , "[0-9]{9}". type=validatortype.simple.

the required stringvalidator works properly...what´s going on here? possible use validator properly?

thanks in advance

try with

@regexfieldvalidator(type=validatortype.field, message="invalid phone",     expression="\\([0-9][0-9][0-9]\\)\\s[0-9][0-9][0-9]-[0-9][0-9][0-9][0-9]")