javaMail实现邮件发送

平常我们在做登陆注册的时候需要需要对邮箱进行验证，向邮箱发送验证信息。下面是我在做注册的时候向邮箱发送验证码代码。

邮箱校验正则

邮箱匹配规则：boolean mflag = mail.matches("^\\s*\\w+(?:\\.{0,1}[\\w-]+)*@[a-zA-Z0-9]+(?:[-.][a-zA-Z0-9]+)*\\.[a-zA-Z]+\\s*$");

邮箱发送入口

if(!mflag){result.setCode("-1");result.setMessage("邮箱格式验证不正确");}else {//获取随机的六位数字 用于发送验证码String identifyingCode = SendEmailUtils.generatePassword();//拼装邮件内容   发送邮件的具体内容String emailContent = getEmailContent4RegEmail(identifyingCode);        //将验证码放入缓存服务器中memcache MemcacheUtil.set(mail, 30, identifyingCode);//邮件服务器地址  从配置文件中读取邮件服务器地址String mailHost = SendEmailUtils.getPropValue("mail.smtp.host");//发送人邮箱     <span style="font-family: Arial, Helvetica, sans-serif;">从配置文件中读取发送人邮箱</span>String mailEmail = SendEmailUtils.getPropValue("mail.smtp.email");//邮箱用户名     从配置文件中读取发送人邮箱用户名String mailUser = SendEmailUtils.getPropValue("mail.smtp.user");//邮箱密码      从配置文件中读取发送人邮箱密码String mailPassword = SendEmailUtils.getPropValue("mail.smtp.password");//邮件主题String title = "****邮箱注册";//发送邮箱  参数包括  发送目的地邮箱    发送人邮箱   邮件主题  邮件内容  邮件服务器  发送人邮箱用户名  发送人邮箱密码  是否是html格式new SendEmailUtils().send(mail, mailEmail, title, emailContent,mailHost, mailUser, mailPassword, true);Map<String, String> reMap = new HashMap<String, String>();reMap.put("sendCode", identifyingCode);result.setData(reMap);result.setCode("1");result.setMessage("发送成功");}

拼装邮件内容（html格式的）

private String getEmailContent4RegEmail(String identifyingCode) {StringBuilder emailContent = new StringBuilder().append("您在***进行邮箱注册操作的验证码为：<span style=\"color: #F3750F;font-weight: bold;font-size: larger;font-family: cursive;\">").append(identifyingCode).append("</span><br/>").append("此验证码只能使用一次，验证成功自动失效；<br/>").append("<div style=\"font-size: small;color: gray;\">").append("(请在10分钟内完成验证，10分钟后验证码失效，您需要重新进行验证。感谢您对***的支持。)<br/>").append("如果您错误的收到了本电子邮件，请您忽略上述内容<br/>").append("</div>");return emailContent.toString();}

发送邮件工具类

import java.io.InputStream;import java.util.Date;import java.util.Properties;import java.util.Random;import javax.mail.Authenticator;import javax.mail.Message;import javax.mail.MessagingException;import javax.mail.PasswordAuthentication;import javax.mail.Session;import javax.mail.Transport;import javax.mail.internet.AddressException;import javax.mail.internet.InternetAddress;import javax.mail.internet.MimeMessage;import org.apache.log4j.Logger;public class SendEmailUtils {/** 邮件随机数 */public static Random random = new Random();//邮箱服务器public static String MAILHOST="";public static String MAILEMAIL="";public static String MAILUSER="";public static String MAILPASSWORD="";public static String MAILADDRESS="";private static Properties prop = null;static{String path = "/com/conf/mail.properties";InputStream in = SendEmailUtils.class.getResourceAsStream(path);if ( in != null ){prop = new Properties();try{prop.load(in);MAILHOST = (String) prop.get("mail.smtp.host");MAILEMAIL = (String) prop.get("mail.smtp.email");MAILUSER=(String)prop.get("mail.smtp.user");MAILPASSWORD=(String)prop.get("mail.smtp.password");} catch (Exception e){throw new RuntimeException(e);}}}public static String getPropValue(String key){String path = "/com/conf/mail.properties";String val = null;InputStream in = SendEmailUtils.class.getResourceAsStream(path);if ( in != null ){prop = new Properties();try{prop.load(in);val = prop.getProperty(key);} catch (Exception e){e.printStackTrace();System.out.println("=====================get property file error!");}}return val;}private static Logger logger = Logger.getLogger(SendEmailUtils.class);//发送邮件相关/** * 生成密码（6位随机数字） * @return String * @author HuKaiXuan 2014-5-17 上午11:16:18 */public static String generatePassword(){String number = "";for(int i = 0; i < 6; i ++) {number += random.nextInt(10); }return number;}public static void main(String[] args) {String propValue = new SendEmailUtils().getPropValue("mail.smtp.host");System.out.println(propValue);/*Random random = new Random();String password = random.nextInt() + "";StringBuffer content = new StringBuffer();content.append("您好！用户 Mr.Men ***** 在radio的密码为：" + password + "<br/>(该邮件为系统邮件，请勿回复，登录后请及时修改您的密码。)");String mailHost = "smtp.163.com";// pu.getValue("mail.send.host");String mailEmail = "***[e-mail]";// pu.getValue("mail.send.email");String mailUser = "***2010";// pu.getValue("mail.send.user");String mailPassword = "***";// pu.getValue("mail.send.password");try {new SendEmailUtils().send("****@qq.com", mailEmail, "密码重置", content.toString(), mailHost, mailUser, mailPassword, false);System.out.println("Mail Send Success");} catch (AddressException e) {System.out.println("AddressException-------" + e.getMessage());e.printStackTrace();} catch (MessagingException e) {System.out.println("MessagingException-------" + e.getMessage());e.printStackTrace();}*/}/*************************************************************************** * 邮件发送，带用户名和密码验证，测试通过 *  * @param to       发送目的地邮箱 * @param from     发送来源地邮箱    * @param title    邮箱主题 * @param content  邮箱内容 * @param smtpServer 邮箱服务器 * @param user       邮箱有户名  * @param password   邮箱密码 * @param isHTML     是否是Html * @throws AddressException * @throws MessagingException */public void send(String to, String from, String title, String content,String smtpServer, String user, String password, boolean isHTML)throws AddressException, MessagingException {Properties props = new Properties();Authenticator auth = new MailAuthenticator(user, password);Session sendMailSession;Transport transport;props.put("mail.smtp.host", smtpServer);props.put("mail.smtp.auth", "true");sendMailSession = Session.getInstance(props, auth);Message newMessage = new MimeMessage(sendMailSession);newMessage.setFrom(new InternetAddress(from));newMessage.setRecipient(Message.RecipientType.TO, new InternetAddress(to));newMessage.setSubject(title);newMessage.setSentDate(new Date());if (isHTML) {newMessage.setContent(content, "text/html;charset=UTF-8");} else {newMessage.setText(content);}transport = sendMailSession.getTransport("smtp");Transport.send(newMessage);transport.close();if (logger.isDebugEnabled()) {logger.debug("---------- Mail Send Success ----------");}}}class MailAuthenticator extends Authenticator {private String user;private String password;public MailAuthenticator() {}public MailAuthenticator(String user, String password) {this.user = user;this.password = password;}protected PasswordAuthentication getPasswordAuthentication() {return new PasswordAuthentication(user, password);}public String getMailServer(String email) {String mailUrl = "/";if (null != email) {mailUrl = email.toLowerCase();String email_array = email.substring(email.indexOf("@"));if ("163.com".equals(email_array)) {// 163邮箱mailUrl = "mail.163.com";} else if ("vip.163.com".equals(email_array)) {// 163vip邮箱mailUrl = "vip.163.com";} else if ("sina.com".equals(email_array)) {// 新浪邮箱mailUrl = "mail.sina.com.cn";} else if ("sina.cn".equals(email_array)) {// 新浪邮箱mailUrl = "mail.sina.com.cn";} else if ("vip.sina.com".equals(email_array)) {// 新浪vip邮箱mailUrl = "vip.sina.com.cn";} else if ("2008.sina.com".equals(email_array)) {// 新浪2008邮箱mailUrl = "mail.2008.sina.com.cn";} else if ("sohu.com".equals(email_array)) {// 搜狐邮箱mailUrl = "mail.sohu.com";} else if ("vip.sohu.com".equals(email_array)) {// 搜狐vip邮箱mailUrl = "vip.sohu.com";} else if ("tom.com".equals(email_array)) {// Tom邮箱mailUrl = "mail.tom.com";} else if ("vip.sina.com".equals(email_array)) {// Tom vip 邮箱mailUrl = "vip.tom.com";} else if ("sogou.com".equals(email_array)) {// 搜狗邮箱mailUrl = "mail.sogou.com";} else if ("126.com".equals(email_array)) {// 126邮箱mailUrl = "www.126.com";} else if ("vip.126.com".equals(email_array)) {// 126 vip 邮箱mailUrl = "vip.126.com";} else if ("139.com".equals(email_array)) {// 139邮箱mailUrl = "mail.10086.cn";} else if ("gmail.com".equals(email_array)) {// gmail邮箱mailUrl = "www.gmail.com";} else if ("hotmail.com".equals(email_array)) {// 139邮箱mailUrl = "login.live.com";} else if ("189.cn".equals(email_array)) {// 电信邮箱mailUrl = "webmail2.189.cn/webmail/";} else if ("qq.com".equals(email_array)) {// qq邮箱mailUrl = "mail.qq.com";} else if ("yahoo.com".equals(email_array)) {// 雅虎邮箱mailUrl = "mail.cn.yahoo.com";} else if ("yahoo.cn".equals(email_array)) {// 雅虎邮箱mailUrl = "mail.cn.yahoo.com";} else if ("yahoo.com.cn".equals(email_array)) {// 雅虎邮箱mailUrl = "mail.cn.yahoo.com";} else if ("21cn.com".equals(email_array)) {// 21cn邮箱mailUrl = "mail.21cn.com";} else if ("eyou.com".equals(email_array)) {// eyou邮箱mailUrl = "www.eyou.com";} else if ("188.com".equals(email_array)) {// 188邮箱mailUrl = "www.188.com";} else if ("yeah.net".equals(email_array)) {// yeah邮箱mailUrl = "www.yeah.net";} else if ("foxmail.com".equals(email_array)) {// foxmail邮箱mailUrl = "foxmail.com";} else if ("wo.com.cn".equals(email_array)) {// 联通手机邮箱mailUrl = "mail.wo.com.cn";} else if ("263.net".equals(email_array)) {// 263邮箱mailUrl = "www.263.net";} else if ("x263.net".equals(email_array)) {// 263邮箱mailUrl = "www.263.net";} else if ("263.net.cn".equals(email_array)) {// 263邮箱mailUrl = "www.263.net";} else {mailUrl = "mail." + (email.substring(email.indexOf("@") + 1));}}return mailUrl;}}