java program for email validation

Turn http://blog.csdn.net/marila4720/article/details/8728840Package URL;Import Java.util.regex.Pattern;Import Java.util.regex.Matcher;public class test1{public static void Main (String[]args) {String regex = "\ \[email protected]\\w+\\. (com\\.cn) |\\[email protected]\\w+\\. (COM|CN) ";/*\w representative [a-za-z0-9_], the reason is written \\w because \ has escaped meaning, so to output \ must be written \

";//Mailbox server SMTP host, which uses its own QQ mailbox as the mail server private static String smtphost= "smtp.qq.com"; Sender's mailbox (must be the login user name for the mailbox server) private static string Fromemail= "[emailprotected]";//Sender name private static string Fromusername= "xxx Company";//message content encoding, prevent garbled private static String charset= "UTF-8";/** *java Send mail-commons-

default, which is done in the following way:1, Control Panel –> program –> turn Windows features on or off, select the "Telnet Server" and "Telnet Client" box, click OK.2. Control Panel –> system security –> management tool –> Service –>telnet–> right-click on "Properties" –> Change "Disable" to "manual", apply, and select "Start"Note that the first step must be taken before you can find Telnet in the second step of the service.Telnet server no longe

In the new project, the function of automatically sending data collection results to the specified mailbox is required. Because Java is not very familiar with it, a simple email sending function is provided after some online searches and references, take it as a java entry-level study. For preliminary verification, emails can be sent normally.After the code is ad

! System.out.println (Ip2[i]); } /** Check the email address! */String Mail= "[Email protected]"; BooleanBF = Mail.matches ("\\[email protected]\\w+ (\\.\\w+) +"); System.out.println (Mail+ ":" +BF); String SR= "fsdfs.12345"; Pattern P= Pattern.compile ("\\w+"); Matcher m=P.matcher (SR); while(M.find ()) {System.out.println (M.group ()); } /** Regu

The previous article simply wrote a regular expression of theoretical knowledge, this is the actual combat verificationFirst we write a URL validation class, of course, it can be another environment, here we have the Java environmentPackage Com.zyt.regex;Import Java.util.regex.Matcher;Import Java.util.regex.Pattern;URL validationpublic class Urlreg {public String str = NULL;Public String RegEX =null;Ublic B

(); Mp1.addbodypart (text); //Mp1.addbodypart (image);Mp1.setsubtype ("related"); //describe relationships: body and attachmentsMimemultipart MP2 =NewMimemultipart (); for(intI=0; I) {mp2.addbodypart (mimebodyparts.Get(i)); } //Mp2.addbodypart (attach2); //BodyPart representing the bodyMimeBodyPart content =NewMimeBodyPart (); Content.setcontent (mp1); Mp2.addbodypart (content); Mp2.setsubtype ("Mixed"); Message.setcontent (mp2);

Password Verification requirements:1) Password control can only enter letters, numbers, special symbols ([email protected]#$%^* () _+[]{}|\;: ' ",./2) length 6-16 digits, must include 2 kinds of letters, numbers, special symbols3) password cannot contain user name informationDetermine if the password contains a number: contains return 1, does not contain return 0int i = newpwd.matches (". *\\d+.*")? 1:0;Determine if the password contains letters: cont

(String value) {Return match (V_unpositive_float,value);} /*** Verify URL* @param value to validate the string* @return If it is a string that conforms to the format, return */public static Boolean URL (String value) {Return match (V_url,value);} /*** Verify user registration. Matches a string consisting of a number, 26 letters, or underscores* @param value to validate the string* @return If it is a string that conforms to the format, return */public static Boolean UserName (String value) {Retu

= In.getchannel (). Map (FileChannel.MapMode.READ_ONLY, 0, File.length ()); MessageDigest MD5 = messagedigest.getinstance ("MD5"); Md5.update (bytebuffer); BigInteger bi = new BigInteger (1, Md5.digest ()); Value = bi.tostring (+); } catch (Exception e) { e.printstacktrace (); } finally { if (null! = in) { try { in.close (); } catch (IOException e) {

The use of KeytoolThe Keytool program is provided by the JDK to generate and view certificates and keys. The KeyStore is a key container that can hold multiple key and related information.Each key is referenced by an alias aliases. You can export the key in KeyStore to a certificate file. cer. Obviously, the. cer generated with Keytoolis a certificate that is not signed by the CA. Add a key Keytool-genkey-alias acosta-keyalg rsa-keysize 1024-keystore

This article is to write a Jsp+javabean completed user registration program, the main logic is: User input form Content-sent to JavaBean for verification-verification successfully jump to the details page-validation failure indicates an error.The main pages are:index.jsp, check.jsp, success.jsp, Register.javaRegister.javaPackage Com.zzh.test;import Java.util.hashmap;import Java.util.map;public class Registe

) { Pattern p = pattern.compile ("^[0-9]{11}$"); Matcher m = p.matcher (value); Boolean IsOK = M.find (); return IsOK; }4. Create a random numberpublic static int Buildrandom (int length) {int num = 1;double random = Math.random (); if (Random 5. Get the model, browser type public static String Gettypeas (httpservletrequest request) { string typeas= request.getheader ("User-agent" ); if (Typeas.equals ("") | | Typeas==null) {typeas= "nothing";} return typeas; }5. Get the IP

successfully, returns aUserobjects →Regservlet (judging the returnedUseris empty, not emptyStartunder the Tools classSendemailthreadThread Class)→ Mail sent successfully to email click on the link →ActiveservletThe link now takes a parameterActive→Registerservice (Interface)Business Layer(Pass the activation code as a parameter to determine if the activation code exists.)→Registerserviceimp (Implementation Class)calledDAOmethod of layer interface →Re

client. Set clientauth= "False" for two-way authentication, which is to verify only the server-side certificate. 8. Start the server program Tomcat service, open IE input access address: Https://localhost:8443/ServerDemo, my test program, the program is very simple inside on an external development of the servlet program