3
我正在開發一個應用程序，需要通過JavaMail發送一封具有特定消息ID的電子郵件。Java MimeMessage.saveChanges not calling updateMessageID
我已經擴展了Java MimeMessage類來覆蓋updateMessageID方法，以便我可以自己設置消息ID。問題是，當我調用Transport.send（msg）方法時，它不調用updateMessageID方法。我想也許我需要在調用Transport.send（msg）之前調用saveChanges（）方法。即使當我顯式調用msg.saveChanges（）時，也不會觸發updateMessageID方法被調用。
是什麼讓這更古怪是因爲，當我將測試應用程序轉換爲JSP並運行它時，Transport.send（msg）方法會調用updateMessageID方法。
我測試的服務器和web服務器都運行jdk1.7.0_71。
擴展的MimeMessage類
package com.my.framework;
import javax.mail.MessagingException;
import javax.mail.Session;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
public class MYMimeMessage extends MimeMessage {
Session session;
private static int id = 0;
private static String messageID = null;
public MyMimeMessage(Session session) {
super(session);
this.session=session;
}
protected void updateMessageID() throws MessagingException {
System.out.println("Calling updateMessageID()");
setHeader("Message-ID", "<" + getUniqueMessageIDValue(session) + ">");
}
/* Added to pass message id in */
public static void setMessageID(String cid)
{
messageID = cid;
}
public static String getUniqueMessageIDValue(Session ssn) {
String suffix = null;
InternetAddress addr = InternetAddress.getLocalAddress(ssn);
if (addr != null)
suffix = addr.getAddress();
else {
suffix = "[email protected]"; // worst-case default
}
\t
if(messageID == null)
{
messageID = "987654321";
}
StringBuffer s = new StringBuffer();
\t
// Unique string is <messageID>.<id>.<currentTime>.FDDMail.<suffix>
s.append(messageID).append('.').append(getUniqueId()).append('.').
append(System.currentTimeMillis()).append('.').
append("FDDMail.").
append(suffix);
System.out.println("RETURNING THE new ID: " + s.toString()");
return s.toString();
}
private static synchronized int getUniqueId() {
\t return id++;
}
}我打電話從名爲SimpleEmail郵件包裝這個MimeMessageClass。它主要是一堆get/set函數。所有的肉是在sendEmail方法...
public String sendEmail()
{
String msgText1 = this.getBody();
// Create some properties and get the default Session
Properties props = System.getProperties();
props.put("mail.smtp.host", this.getSmtpClient());
props.put("mail.from", "");
Session session = Session.getDefaultInstance(props, null);
try
{
// Create a message
MyMimeMessage msg = new MyMimeMessage(session);
if (null != sender && sender.length() > 0)
{
msg.setSender(new InternetAddress(sender));
}
if((this.getReply_to() != null) && (this.getReply_to().length() > 0))
{
Address emailReplyTo[] = new Address[1];
emailReplyTo[0] = new InternetAddress(this.getReply_to());
msg.setReplyTo(emailReplyTo);
}
msg.setFrom(new InternetAddress(this.getFrom()));
if(this.to == null || this.to.size() <= 0)
{
return "Error: No To to send";
}
int toIndex = 0;
InternetAddress [] address = new InternetAddress [this.to.size()];
while(this.HasNextTo())
{
address[toIndex] = new InternetAddress(this.nextTo());
toIndex++;
}
msg.setRecipients(Message.RecipientType.TO, address);
if(this.subject == null)
{
this.subject = "<no subject>";
}
msg.setSubject(this.subject);
if(!useTextHeader)
{
//Create and fill the first message part
MimeBodyPart mbp1 = new MimeBodyPart();
mbp1.setDataHandler(new DataHandler(new HTMLDataSource(msgText1)));
Multipart mp = new MimeMultipart();
mp.addBodyPart(mbp1);
// Create the second message part
MimeBodyPart mbp2;
FileDataSource fds;
String filename;
if(this.attachments != null) {
Set attachmentPathAndNames = this.attachments.keySet();
Iterator attachmentIterator = attachmentPathAndNames.iterator();
while(attachmentIterator.hasNext()) {
String attachmentPathAndName = (String)attachmentIterator.next();
filename = (String)this.attachments.get(attachmentPathAndName);
if(filename == null) {
String[] dirs = attachmentPathAndName.split("\\/");
filename = dirs[dirs.length - 1];
}
mbp2 = new MimeBodyPart();
fds = new FileDataSource(attachmentPathAndName);
mbp2.setDataHandler(new DataHandler(fds));
mbp2.setFileName(filename);
//Create the Multipart and its parts to it
mp.addBodyPart(mbp2);
}
}
//add the Multipart to the message
msg.setContent(mp);
}
else
{
msg.setText(msgText1);
}
//set the Date: header
msg.setSentDate(new Date());
//set the MessageID Header
msg.setMessageID(this.messageID);
//send the message
try
{
Transport.send(msg);
}
catch(Exception e)
{
System.out.println("STOP WE THREW AN ERROR!!!!!!!!!!!!!!!");
}
}
catch (MessagingException mex)
{
mex.printStackTrace();
System.out.println("Error: SimpleEmail.SendEmail() = Caught MessagingException: " + mex.toString());
return "Error: SimpleEmail.SendEmail() = Caught MessagingException: " + mex.toString();
}
return this.SUCESS_MESSAGE;
}所以，當我從一個JSP叫我可以看到從MyMimeMessage類兩個打印語句
<%@ page import="com.ifx.framework.SimpleEmail" %>
<%
String toAddr = request.getParameter("emailAddr");
String mid = request.getParameter("customID");
String SMTP_CLIENT = "myserver.mydomain.com";
String body = "Hi " + toAddr + "!<br>Today we are testing to see if the setting messageID to " + mid + " works!";
String sendResult = "No Email Sent";
if(toAddr != null)
{
SimpleEmail se = new SimpleEmail();
se.addTo(toAddr);
se.setSubject("Testing Headers");
se.setSmtpClient(SMTP_CLIENT);
se.setFrom("[email protected]");
se.setBody(body);
se.setMessageID(mid);
sendResult = se.sendEmail();
}
%>
<!DOCTYPE html>
<html>
<head>
<title>
Test Page
</title>
<style>
label {
width: 200px;
display: inline-block;
margin-bottom: 5px;
}
</style>
</head>
<body>
<p style="background-color: #ADD8E6; border: solid 2px #000080;">
<%=sendResult%>
</p>
<form action="#" method="post">
<label for=emailAddr>Email Address:</label><input id="emailAddr" name="emailAddr" type="email"/> <br>
<label for=customValue>Custom Message ID:</label><input id="customID" name="customID" type="text"/> <br>
<input type="submit" value="Submit"/>
</form>
</body>
</html>在我的日誌中我看到：
Calling updateMessage()
RETURNING THE new ID: [email protected]
當我檢查生成的電子郵件時，標題中的Message-ID與設置的內容匹配。
這裏是我的問題所在，當我運行獨立版本時，它仍然發送電子郵件，但不調用updateMessageID方法，並且不打印出調試語句。
import com.ifx.framework.SimpleEmail;
public class headerTest
{
public static void main(String args[])
{
String toAddr = args[0];
String mid = args[1];
String SMTP_CLIENT = "myserver.mydomain.com";
String body = "Hi " + toAddr + "!<br>Today we are testing to see if the header message id is retained";
String sendResult = "No Email Sent";
if(toAddr != null)
{
SimpleEmail se = new SimpleEmail();
se.addTo(toAddr);
se.setSubject("Testing Headers");
se.setSmtpClient(SMTP_CLIENT);
se.setFrom("[email protected]");
se.setBody(body);
se.setMessageID(mid);
sendResult = se.sendEmail();
}
System.out.println("Done!");
}
}，我得到的唯一的輸出，當我運行是這樣的：
Done!
，而我期待
Calling updateMessage()
RETURNING THE new ID: [email protected]
Done!
我有我的整個團隊（包括系統管理員）難住這個問題。任何和所有的建議將不勝感激！