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<td width="90%"><font size="4" face="Verdana, Arial, Helvetica"><b>發送消息</b></font></td><td width="200" align="right"><font size="1" face="Verdana, Arial, Helvetica"><nobr>   第 2 頁（共9 頁）</nobr></font></td>
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<p>發送電子郵件消息這一過程包括獲取一個會話，創建并填充一則消息，然后發送。
得到 <code>Session</code> 時，經由設置傳遞的 <code>Properties</code> 對象中的 <code>mail.smtp.host</code> 屬性，可以指定您的 SMTP 服務器：</p>
<pre>
<code style="font-family: Courier New, Courier, monospace; font-size: 12">
String host = ...;
String from = ...;
String to = ...;

// Get system properties
Properties props = System.getProperties();

// Setup mail server
props.put("mail.smtp.host", host);

// Get session
Session session = Session.getDefaultInstance(props, null);

// Define message
MimeMessage message = new MimeMessage(session);
message.setFrom(new InternetAddress(from));
message.addRecipient(Message.RecipientType.TO,
  new InternetAddress(to));
  message.setSubject("Hello JavaMail");
  message.setText("Welcome to JavaMail");

  // Send message
  Transport.send(message);
  </code>
</pre>
<p>您應該將代碼放在一個 try-catch 程序塊中，這樣創建和發送消息時就能夠拋出異常。</p>
<p>
<b>練習：</b>
<br>

<a href="j-javamail-8-4.html">練習 2. 如何發送第一條消息</a>
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