java mail send

publicclassJavaMailSendingHandlerimplementsILocalEmailSendingHandler {

　　publicvoidsend(String to, String from, String subject, String content, String contentType)throwsException {

　　Properties props=newProperties();

　　props.put("mail.smtp.localhost", getHost(from));

　　String server=getSMTPServerByJNDI(getHost(to));

　　props.setProperty("mail.smtp.host", server);

　　Session session=Session.getInstance(props,null);

　　MimeMessage message=newMimeMessage(session);

　　message.setContent(content, contentType);

　　message.setSender(newInternetAddress(from));

　　message.setFrom(newInternetAddress(from));

　　message.setRecipient(RecipientType.TO,newInternetAddress(to));

　　message.setSubject(subject);

　　message.setHeader("Content-Type", contentType);

　　message.setHeader("Content-Transfer-Encoding","7bit");

　　SimpleDateFormat format=newSimpleDateFormat("EEE, d MMM yyyy HH:mm:ss Z");

　　message.setHeader("Date", format.format(newDate()));

　　Transport.send(message,newAddress[] {newInternetAddress(to) });

　　}

　　privateString getHost(String address) {

　　returnaddress.substringaddress.indexOf('@')+1);

　　}

　　//通过JNDI 查找给定域的邮件服务器。

　　privateString getSMTPServerByJNDI(String host)throwsException {

　　Properties jndiEnvironmentProperties=newProperties();

　　jndiEnvironmentProperties.put("java.naming.factory.initial","com.sun.jndi.dns.DnsContextFactory");

　　DirContext initialDirContext=newInitialDirContext(jndiEnvironmentProperties);

　　Attributes attributes=initialDirContext.getAttributes(host,newString[] {"MX"});

　　Attribute attribute=attributes.get("MX");

　　String[] servers=newString[attribute.size()];

　　for(inti=0; i<attribute.size(); i++) {

　　servers[i]=attribute.get(i).toString();

　　}

　　String server=servers[0];

　　server=server.substring(server.indexOf("")+1, servers[0].length()-1);

　　returnserver;

　　}

　　}