public class EmailTask
{
// Session used by the javamail classes
private Session session;
// List of messages郵件傳送資訊物件列表
private List<Message> messages = null;
/**構造方法
* Creates a new EmailTask.
*/
public EmailTask()
{
//郵件傳送入參Properties，用來設定引數
Properties mailProps = new Properties();
//郵件伺服器地址：域名或ip
String host = "smtpscn.test.com";
//郵件伺服器埠，預設25
String port = "25";
//是否開啟TLS方式傳送,1 是，0 否.預設否
String startTLS = "0";
//是否驗證證照，1 是，0 否.預設是
String cert = "0";
//是否鑑權true false
String isAuth = "true";
//鑑權賬號
final String account = "zWX161496";
//鑑權密碼
final String pwd = "Asd123";
if (host != null && !"".equals(host))
{
mailProps.setProperty("mail.smtp.host", host);
}
if (port != null && !"".equals(port))
{
mailProps.setProperty("mail.smtp.port", port);
}
//如果開始TLS方式
if ("1".equals(startTLS))
{
mailProps.setProperty("mail.smtp.starttls.enable", "true");
//是否驗證證照
if ("0".equals(cert))
{
mailProps.setProperty("mail.smtp.ssl.trust", "*");
}
}
//是否鑑權：true false
mailProps.setProperty("mail.smtp.auth", isAuth);
// Create the mail session, check authenticator
session = Session.getInstance(mailProps, new Authenticator()
{
protected PasswordAuthentication getPasswordAuthentication()
{
return new PasswordAuthentication(account, pwd);
}
});
messages = new LinkedList();
}
/**傳送一批郵件
* 如果呼叫該方法，將不會通過單獨起一個執行緒的方式來傳送郵件
* 好處是如果傳送失敗可以立即返回結果
* 缺點是不適合頻率較高的操作
*/
public void sendMessage()
{
try
{
Iterator<Message> messageIterator = messages.iterator();
while (messageIterator.hasNext())
{
Message message = messageIterator.next();
Transport.send(message);
}
}
catch (MessagingException me)
{
//
}
catch (Exception e)
{
//
}
}
/**
* 構造Message
* @param toName the name of the recipient of this email.
* @param toEmail the email address of the recipient of this email.
* @param fromName the name of the sender of this email.
* @param fromEmail the email address of the sender of this email.
* @param subject the subject of the email.
* @param body the body of the email.
*/
public void addMessage(String toName, String toEmail, String fromName,
String fromEmail, String subject, String body)
{
if (toEmail == null || fromEmail == null || subject == null
|| body == null)
{
DebugLogFactory.debug(MailTmplTool.class,
"Error sending email in EmailTask.java: Invalid fields.");
}
else
{
try
{
Message message = createMessage();
Address to = null;
Address from = null;
if (toName != null)
{
to = new InternetAddress(toEmail, toName);
}
else
{
to = new InternetAddress(toEmail);
}
if (fromName != null)
{
from = new InternetAddress(fromEmail, fromName);
}
else
{
from = new InternetAddress(fromEmail);
}
message.setRecipient(Message.RecipientType.TO, to);
message.setFrom(from);
message.setSubject(subject);
message.setSentDate(new Date());
message.setHeader("Content-Transfer-Encoding", "BASE64");
message.setContent(body, "text/html;charset=UTF-8");
messages.add(message);
}
catch (Exception e)
{
//
}
}
}
/**
*
* @return A new JavaMail message.
*/
public Message createMessage()
{
return new MimeMessage(session);
}
}
補充：可以使用多執行緒傳送傳送，好處是不影響主執行緒，可以立即返回。
建立一個連結串列LinkedList（可包裝為郵件傳送工廠），用來存放每個郵件任務物件，啟用幾個執行緒如6個，每次發郵件時，將發郵件任務物件新增到LinkedList，注意枷鎖，並通知所有執行緒啟用notifyall；
當LinkedList有元素時，這些執行緒被啟用，同時從LinkedList取出任務，注意加鎖，本別傳送；
當列表為空時，就掛起wait。