package test;import javax.mail.internet.InternetAddress;import javax.mail.internet.MimeMessage;import javax.mail.internet.MimeUtility;import javax.mail.Session;import javax.mail.MessagingException;import javax.mail.Transport;public class SendHtmlMail {  public static void sendMessage(String smtpHost, String from, String to,String subject, String messageText) throws MessagingException,      java.io.UnsupportedEncodingException {    // Step 1: Configure the mail session    System.out.println("Configuring mail session for: " + smtpHost);    java.util.Properties props = new java.util.Properties();    props.setProperty("mail.smtp.auth", "true");// 指定是否需要SMTP驗證    props.setProperty("mail.smtp.host", smtpHost);// 指定SMTP服務器    props.put("mail.transport.protocol", "smtp");    Session mailSession = Session.getDefaultInstance(props);    mailSession.setDebug(false);// 是否在控制臺顯示debug信息    // Step 2: Construct the message    System.out.println("Constructing message - from=" + from + " to=" + to);    InternetAddress fromAddress = new InternetAddress(from);    InternetAddress toAddress = new InternetAddress(to);    MimeMessage testMessage = new MimeMessage(mailSession);    testMessage.setFrom(fromAddress);    testMessage.addRecipient(javax.mail.Message.RecipientType.TO, toAddress);    testMessage.setSentDate(new java.util.Date());    testMessage.setSubject(MimeUtility.encodeText(subject, "gb2312", "B"));    testMessage.setContent(messageText, "text/html;charset=gb2312");    System.out.println("Message constructed");    // Step 3: Now send the message    Transport transport = mailSession.getTransport("smtp");    transport.connect(smtpHost, "riteng_mes", "ri-teng1234");    transport.sendMessage(testMessage, testMessage.getAllRecipients());    transport.close();    System.out.println("Message sent!");  }  public static void main(String[] args) {    String smtpHost = "10.131.119.36";    String from = "Riteng_Mes@casetekcorp.com";    String to = "Qiang1_Zhang@intra.casetekcorp.com";    String subject = "html郵件測試"; // subject javamail自動轉碼    StringBuffer theMessage = new StringBuffer();    theMessage.append("<h2><font color=red>這倒霉孩子</font></h2>");    theMessage.append("<hr>");    theMessage.append("<i>年年失望年年望</i>");    theMessage.append("<table border='1'><tr><td>aaa</td><td>bbb</td></tr><tr><td>ccc</td><td>ddd</td></tr></table>");    try {      SendHtmlMail.sendMessage(smtpHost, from, to, subject,theMessage.toString());    } catch (javax.mail.MessagingException exc) {      exc.printStackTrace();    } catch (java.io.UnsupportedEncodingException exc) {      exc.printStackTrace();    }  }}