email-address

问题 i need to validate that an inserted email address contains "@" and "." without a regular expression. Can somebody to give me "java code" and "structure chart" examples please? 回答1: I suspect you're after something like: if (!address.contains("@") || !address.contains(".")) { // Handle bad address } EDIT: This is far from a complete validation, of course. It's barely even the start of validation - but hopefully this will get you going with the particular case you wanted to handle. 回答2: You can

问题 I'm trying to write a regular expression that checks if an email form field contains a free email address, with no luck. Essentially I need to check if the email contains: hotmail , yahoo , gmail etc in the email field. 回答1: regex would be sth like: [a-zA-Z0-9_\.+]+@(gmail|yahoo|hotmail)(\.[a-z]{2,3}){1,2} you can add all the other domains you want... does it help you? 回答2: /\@(hotmail|yahoo|gmail)\.com/ 回答3: Have you tried a big ol' disjunction? i.e. yahoo\.com|googlemail\.com|blah\.net Pros

问题 I am using SmtpClient to send an email to multiple recipients. As employees leave the company, their email addresses become invalid. Since their email addresses remain in our database until deleted manually, trying to send an email to them causes our application to throw an exception during SmtpClient.Send(MailMessage) . However, in spite of the exception being thrown, it still sends the email. This is a problem because we want to handle this error by blocking the user's attempt to save the

问题 I'm looking for an efficient way of sorting an array of email addresses to avoid items with the same domain to be consecutive, in C#. Email addresses inside the array are already distinct and all of them are lower case. Example: Given an array with the following entries: john.doe@domain1.com jane_doe@domain1.com patricksmith@domain2.com erick.brown@domain3.com I would like to obtain something similar to the following: john.doe@domain1.com patricksmith@domain2.com jane_doe@domain1.com erick

问题 I am working on a wpf app, and I have a Customer Information section where I can record my customer information. In this section, I use a textbox recording customer's email address. But now I want to make the email address hyperlink and link the email address via Outlook email, say, if I click the email address, it opens the outlook email automatically so that I can send email via outlook. Thanks. What I want is a Label or Textblock whose text is Email on the left (do not need to bind to the

问题 How many subdomains are possible for an Email address? For Example: something@something.co.uk.uk like that.... 回答1: There isn't any constraints based on subdomain count. There is limitation of lengths parts of e-mail address in RFC821 user The maximum total length of a user name is 64 characters. domain The maximum total length of a domain name or number is 64 characters. path The maximum total length of a reverse-path or forward-path is 256 characters (including the punctuation and element

问题 Many users and forum programs in attempt to make automatic e-mail address harversting harder conseal them via obfuscation - @ is replaced with "at" and . is replaced with "dot", so team@stackoverflow.com now becomes team at stackoverflow dot com I'm not an expert in regular expressions and I'm really curious - does such obfuscation really make automatic harvesting harder? Is it really much harder to automatically identify such obfuscated addresses? 回答1: Definitely! I read this article a while

问题 Does anyone know a regex that validates email addresses according to RFC5321/RFC5322? Since (nestable) comments make the grammar irregular, only addresses without comments should be regarded. Of course, if you're interested in validating an address that is actually owned by someone then the only real validation is to send an email to the address and check if the owner received it. I am however purely interested in the RFC standards. For a practical approach this question is more relevant. On

问题 I'm having the this text below: sdabhikagathara@rediffmail.com, "assdsdf" <dsfassdfhsdfarkal@gmail.com>, "rodnsdfald ferdfnson" <rfernsdfson@gmail.com>, "Affdmdol Gondfgale" <gyfanamosl@gmail.com>, "truform techno" <pidfpinfg@truformdftechnoproducts.com>, "NiTsdfeSh ThIdfsKaRe" <nthfsskare@ysahoo.in>, "akasdfsh kasdfstla" <akashkatsdfsa@yahsdfsfoo.in>, "Bisdsdfamal Prakaasdsh" <bimsdaalprakash@live.com>,; "milisdfsfnd ansdfasdfnsftwar" <dfdmilifsd.ensfdfcogndfdfatia@gmail.com> Here emails are

问题 I am using coldfusion 9 to add data into a MySQL database from a form. I would like to create a username from the email address inputed into the form. for example, <cfset store_user_email = EMAILADDRESS> <cfset store_username = trim EMAILADDRESS before the @> I'm not sure how to trim down the email address? Any help would be much appreciated. 回答1: <cfset store_username = trim(listFirst(EMAILADDRESS,"@"))> 来源： https://stackoverflow.com/questions/6775360/how-do-i-trim-an-email-input-address-so