Email Validation - Regular Expression

Hi,
I want to validate the form of an email address using a regular expression. I have come across one, but I get an error.
Pattern p = Pattern.compile("^([a-zA-Z0-9_\-])+(\.([a-zA-Z0-9_\-])+)*@((\[(((([0-1])?([0-9])?[0-9])|(2[0-4][0-9])|(2[0-5][0-5])))\.(((([0-1])?([0-9])?[0-9])|(2[0-4][0-9])|(2[0-5][0-5])))\.(((([0-1])?([0-9])?[0-9])|(2[0-4][0-9])|(2[0-5][0-5])))\.(((([0-1])?([0-9])?[0-9])|(2[0-4][0-9])|(2[0-5][0-5]))\]))|((([a-zA-Z0-9])+(([\-])+([a-zA-Z0-9])+)*\.)+([a-zA-Z])+(([\-])+([a-zA-Z0-9])+)*))$");the error is: Invalid escape sequence.
It underlines the first set of characters in the expression... from ^([a-zA-Z0-9_\-
any ideas? or does anyone have a good regular expression for validatin emails in java??
Thanks
Craig

This email address is also valid by RFC 2822
this!strange%[email protected]
Your RE does not consider such addresses...
Some validations also check if the domain ends with a
2-letter country code, or
'com'/'org'/'biz'/'info'/'museum' etc.
Not to mention that email addresses can have comments in them as well.

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Field validation regular expression to accept only numbers

Hello.
I would like to have a field validation regular expression to accept only numbers - no characters. The list of pre-packaged regular expressions that are included with ApEx does not contain this and I am not a very good regular expression writer. Can anyone help?
Thanks!
Boris

Under the Regular Expression validation all you need to have is:
^[[:digit:]]$For the email address it just depends how detailed you want it:
^((?>[a-zA-Z\d!#$%&'*+\-/=?^_`{|}~]+\x20*|"((?=[\x01-\x7f])[^"\\]|\\[\x01-\x7f])*"\x20*)*(?<angle><))?((?!\.)(?>\.?[a-zA-Z\d!#$%&'*+\-/=?^_`{|}~]+)+|"((?=[\x01-\x7f])[^"\\]|\\[\x01-\x7f])*")@(((?!-)[a-zA-Z\d\-]+(?<!-)\.)+[a-zA-Z]{2,}|\[(((?(?<!\[)\.)(25[0-5]|2[0-4]\d|[01]?\d?\d)){4}|[a-zA-Z\d\-]*[a-zA-Z\d]:((?=[\x01-\x7f])[^\\\[\]]|\\[\x01-\x7f])+)\])(?(angle)>)$or...
[\w-]+@([\w-]+\.)+[\w-]+Hope these help
Edited by: MikesHotRod on Sep 3, 2008 12:40 PM

Validate Email by regular Expression... Need Help

Dear All,
Requirement:
validate the email ID entered & throw error message, if it is invalid.
DATA c_mailpattern TYPE c LENGTH 60 VALUE
'[a-zA-Z0-9._%-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,4} '.
** If @ is present, more than once. Error out
    find ALL OCCURRENCES OF '@' in P_email
    MATCH COUNT v_count.
    if v_count > 1.
      v_badpattern = 1.
    endif.
** If , is present, once, Error out
    find ALL OCCURRENCES OF ',' in P_Email
    MATCH COUNT v_count.
    if v_count > 0.
      v_badpattern = v_badpattern + 1.
    endif.
    FIND REGEX c_mailpattern IN P_Email IGNORING CASE .
    IF sy-subrc <> 0 OR v_badpattern > 0.
Write:/ p_EMAIL, 'has invalid Email format'.
ENDIF.
though this works fine, tester needs me to catch, if domain name has "app.com.com" as invalid email id.
above regex fails in such case.
I searched & found
{messageID=3706355}
messageID=1657369}{
https://wiki.sdn.sap.com/wiki/display/Snippets/E-MAIL+Validation
doesn't help.
I found this regex in a perl program.
[a-z0-9!#$%&'{size:14}*+{size:14}/=?^_`{|}~-]+(?:\.[a-z0-9!#$%&'*+/=?^_`{|}~-]+)*@(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\.)+[a-z0-9](?:[a-z0-9-]*[a-z0-9])?
Can I get help to modify this into ABAP String?
1) I can't bypass the boldened text using Escape characters like #* or '' Can some one help me assign this regex-string into a string variable?
2) This regex is longer than allowed length for a literal.
It can be split into 2 strings, then concatenated & checked.
Edited by: Mallikarjuna J on May 16, 2011 8:23 PM
Edited by: Mallikarjuna J on May 16, 2011 8:26 PM

Thanks Sebastian, Pratik & Keshav for the replies.
SX_INTERNET_ADDRESS_TO_NORMAL doesn't validate a wrong email ID. It only splits the internet address into mail & domain.
Prathik,
just .com.com is not the point, Bad input could be .net.ent or .net.com or so....
Amol, Thanks, but I keep receiving Error, not found in the 41 line response I get
I think we need to check not line 2 but line 28.
Taking cue from Prathik, I'm planning to put this
*** ls_inputmail-mail is the email-id entered by user.
************ Check for Valid Regular Expression
*****   DOT(.) is allowed more than once,
*****   @ is allowed only once,
*****   , is not allowed.
** If @ is present, more than once. Error out
    find ALL OCCURRENCES OF '@' in ls_input_mail-mail
    MATCH COUNT v_count.
    if v_count > 1.
      v_badpattern = 1.
    endif.
** If , is present, once, Error out
    find ALL OCCURRENCES OF ',' in ls_input_mail-mail
    MATCH COUNT v_count.
    if v_count > 0.
      v_badpattern = v_badpattern + 1.
    endif.
**   Find if domain part i.e., after @ has errors.
    SPLIT ls_input_mail-mail at '@' into v_mailpart v_domain.
*    there's a dot in the domain.
    if v_domain Co '.' .
*     last 2 char can only be country name, not anything else.
      SPLIT v_domain at '@' into v_domain1 v_domain2.
*      v_domain2 can only be a country name, else error out
select single landx from t005 into v_country
    where landx = v_domain2.
    if sy-subrc <> 0.
      v_badpattern = v_badpattern + 1.
    endif.
    ENDIF.
    FIND REGEX c_mailpattern IN ls_input_mail-mail IGNORING CASE .
    IF sy-subrc <> 0 OR v_badpattern > 0.
Write:/ ls_inputmail-mail, 'has invalid email format'.
ENDIF.
However, I was wondering, if there was a way to use escapae characters & make the beow string as a valid regex variable to check email id.
[a-z0-9!#$%&'*+/=?^_`{|}~-]+(?:\.[a-z0-9!#$%&'*+/=?^_`{|}~-]+)*@(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\.)+[a-z0-9](?:[a-z0-9-]*[a-z0-9])?
Nevertheless, Thanks Friends for all your inputs.
Edited by: Mallikarjuna J on May 17, 2011 2:23 PM

Validation Regular expression

Hi guys,
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NUMBER(6,4)
Thanks
Siere

Hi Siere
1.) Create a validation on the field, make it a regular expression, and enter in ^\d{6}.\d{4}$2.) Also create a computation at the page level on that field. Make the computation a PL/SQL expression and enter in replace(to_char(:p3_name_of_your_item), ',');3.) If dollars signs might also appear in the number, Make another PL/SQL expression and enter in replace(to_char(:p3_name_of_your_item), '$');This will validate that the numbers must be entered in as 123456.1234 and if they are entered in like $123,456.1234 or 123,456.1234, the commas and dollar signs will be taken out during the computations and changed to 123456.1234
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Hi,
I have to validate the input of a field that I
defined as in a JSP page:
<html:text property="aField" maxlength="8" />
I would like that the input is a digital number which
has at most 8 digits.
I would not allow any space.
To this end, I put in validation configuration
something as
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<arg0 key="label.file.search.aField" />
<var>
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s works for most cases, but still accpet s " "
(only spaces) as valid input. How can I forbid the
spaces?
Thanks.
Pengyouuse can use the required to disallow spaces.....
example
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Note: here name is defined as global constant......if u want to use same mask at different places

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while (m.find())
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Thank you all for the help.
My main goal was to provide verification that a user has logged in and has the proper authority to access a directory/resource. What I believe I now have is a check to verify that the user has a required cookie and that the value in the cookie matches the parameter in $query.
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The Client security checks are down to make sure the user uses HTTPS when entering their user ID/Password.

Regular Expressions - Email Validation

According to RFC-2822 and RFC-2821 specifications the local part of email addresses are allowed to contain a whitespace character as long as it is within quotations. The rest of my regular expression works fine I am battling to find out how to match the above mentioned pattern. Here is the first part of my expression...
([\"(\\w|\\s|\\p{Punct}){1,}\"])
If there is a whitespace character I need to make sure it is surrounded with quotations
Any help will be much appreciated!

AmitChalwade123456 wrote:
it's client side validation ( java script regex) must be used ! Since when are client side validations recommended above server side validations?
What would happen if the client disabled Javascript or hacked the Javascript code?
i think
/\S+@\S+\.\S+/;this might help uThis makes no sense. It just checks on availability of the '@' and '.' in that order in the email address. It doesn't check it if contains valid characters nor checks if it is surrounded by quotes if the actual address contains spaces.

ADF Email Validation using Regular Expression

Hi,
Wanted to add Email Validation VO search.
It is working if i put
<af:validateRegExp pattern="[A-Z0-9._%+-]+@[A-Z0-9.-]+\.[A-Z]{2,4}"
                                         messageDetailNoMatch="The value {1} is not a valid email address:"/>However this requires email id to be entered in Capital Letters.
Tried with below option is not working.
               <af:inputText value="#{bindings.xxEmail.inputValue}" label="Email"
                                      required="#{bindings.xxEmail.hints.mandatory}"
                                      columns="#{bindings.xxEmail.hints.displayWidth}"
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                                      shortDesc="#{bindings.xxEmail.hints.tooltip}" id="it5">
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                            <f:validateLength minimum="6"/>
                            <af:validateRegExp pattern="[A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\.[A-Za-z]{2,4}"
                                         messageDetailNoMatch="The value {1} is not a valid email address:"/>
                        </af:inputText>I got above info from
ADF Email Validation using Regular Expression
User don't enter email id Without @ .
Kindly suggest pattern to achive this.
Thanks,
jit
Edited by: appsjit on Jan 25, 2013 7:08 PM

The RegEx to check EMail after RFC2822
[a-z0-9!#$%&'*+/=?^_`{|}~-]+(?:\.[a-z0-9!#$%&'*+/=?^_`{|}~-]+)*@(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\.)+[a-z0-9](?:[a-z0-9-]*[a-z0-9])?There are still some missing parts in the check as not all suffix combinations are allowed, but this is pretty good.
Timo

EMAIL VALIDATION USING REGULAR EXPRESSIONS

Hi All,
I am new to regular expressions and am trying to learn about them.
As practice I am trying to develop a query to filter out invalid e-mail id's eg:-
<some-name>.<some-name1>@gmail.com - VALID
<some-name>_<some-name1>@gmail.com - VALID
<some-name>@<some-name1>@gmail.com - INVALID
Lets say the column name is EMAIL_ID
So I have the expression to validate the email end as follows
select email from <table-name> where REGEXP_LIKE (EMAIL,'.com$') However i have no idea (wheter it is even possible) to filter out the third email id
on the condition that it has *2 @*
Any help regarding this would be welcome

I would recomend you to look at
http://psoug.org/reference/regexp.html
And will you find answers of your questions...
Shortly my comment to your questions...
1. [A-Za-z0-9._%+-]Here why is %+- included in the pattern?
Are they parts of a valid email-id?[char] Indicates a character list; most metacharacters inside a character list are understood as literals, with the exception of character classes, and the ^ and - metacharacters. Yes they are a part of valid email.
2 +@What is this part doing?
Is + some kind of concatenate operator to help you combine various expressions?+ is means that Character before Match 1 or more times. Your statement before "[A-Za-z0-9._%+-]" must be exist.
3 \.Is this used to validate the . as in .com ? Point (.) by himself means One character (whenever which one). By typing \. you want to see exactly point.. \ "takes" from point "command power" and point(.) become simple character.
4 {2,4}
Emails end in .com then what is the use of putting this range {2,4}?{m, n} Match at least m times but no more than n times.
You want characters after pount in range 2 and 4. i.e. ru, com, az, net and so on...
Hope this was helpfull for you...

Regular Expression to validation email address

I want to validate an Email address and I need a regular expression for validating the email address.
Email address requirement:
1) It should not start with numbers, say like [email protected]
2) It should be limited to 65 characters long including domain name.
3) It should not have numeric domain names like [email protected]
ANy inputs will be great.
Thanks

AccountUser1 wrote:
Oh ok. If domain names can begin with numbers and its valid, then I'do like to incorporate it. Thanks for the info.
In that case let me rephrase my requirement:
Email address requirement:
1) It should not start with numbers, say like [email protected]
2) It should be limited to 65 characters long including domain name.So, you just arbitrarily refuse to deal with entire classes of email addresses? Why?

Regular Expression item validation for email address

Hi,
Does anyone know of a regular expression I can use to validate an email address field? I am using Apex 3.2.
Your help would be much appreciated.
Thanks,
ca84

^((\s*[a-zA-Z0-9\._%-]+@[a-zA-Z0-9\.-]+\.[a-zA-Z]{2,4}\s*[,;:]){1,100}?)?(\s*[a-zA-Z0-9\._%-]+@[a-zA-Z0-9\.-]+\.[a-zA-Z]{2,4})*$

Email validation using Regular Expression.

Hi,
I am in need of using a regular expression for email valiatino. ^[a-z0-9!#$%&'*+/=?^_`{|}~-]+(?:\.[a-z0-9!#$%&'*+/=?^_`{|}~-]+)*@(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\.)+(?:[A-Z]{2}|com|org|net|edu|gov|mil|biz|info|mobi|name|aero|asia|jobs|museum)$ which is gotten from http://www.regular-expressions.info/email.html .
This works fine in a regular expression test tool http://regexpal.com/ , but when I use in Oracle, it does not.
DECLARE
v_exp VARCHAR2(4000);
BEGIN
   --v_exp := '^[a-z0-9!#$%&''*+/=?^_`{|}~-]+(?:\.[a-z0-9!#$%&''*+/=?^_`{|}~-]+)*@(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\.)+(?:[A-Z]{2}|com|org|net|edu|gov|mil|biz|info|mobi|name|aero|asia|jobs|museum)$';
   v_exp := '^[a-z0-9!#\$%&''*+/=?\^_`{|}~-]+(?:\.[a-z0-9!#\$%&''*+/=?\^_`{|}~-]+)*@(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\.)+(?:[A-Z]{2}|com|org|net|edu|gov|mil|biz|info|mobi|name|aero|asia|jobs|museum)$';
   dbms_output.put_line(v_exp);
   FOR v_rec IN (
      with test_data as
( select '[email protected]'     as val from dual union all
select '[email protected]'       as val from dual union all
select 'ad{[email protected]' as val from dual union ALL
select '[email protected]' as val from dual union all
select '[email protected]' as val from dual union all
select '[email protected]'      as val from dual union all
select 'no#good'                  as val from dual
select
val ,
case
    when
      regexp_like
      (val, v_exp,'i') then 'Y'
    else 'N'
    end
    as good
from test_data ) LOOP
   dbms_output.put_line(v_rec.val||', '||v_rec.good);
END LOOP;
END;   and the results are
[email protected], N
[email protected], N
ad{[email protected], N
[email protected], N
[email protected], N
[email protected], N
no#good, N
The expected result should be Y for all but for the last two.
I am not sure why it is not working in Oracle.
Can any body please help me to find the mistake and to have it correctly?
Advance Thanks,
Natarajan
Edited by: Nattu on Dec 4, 2012 1:31 AM

Try this regular expression:
>> ^[_a-z0-9-]+(\.[_a-z0-9-]+)*@[a-z0-9-]+(\.[a-z0-9-]+)*(\.[a-z]{2,4})$
>> [email protected], *Y*
>> [email protected], *Y*
>> ad{[email protected], N
>> [email protected], *Y*
>> [email protected], *Y*
>> [email protected], N
>> no#good, N
[Using a regular expression to validate an email address|http://stackoverflow.com/questions/201323/using-a-regular-expression-to-validate-an-email-address]
Edited by: stefan nebesnak on 4.12.2012 2:25

Email Validation - Regular Expression

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