我正在尝试从收件箱文件夹中复制邮件:
messages = folder.getMessages();
Message[] source = messages;
我这样做是因为,当我查看收件箱中的邮件时,所有最近的邮件都会变成“已查看邮件”。原因就是getContent()
方法。我想弄清楚如何将消息复制到另一个数组,并在源消息数组中处理它们。
但是当我尝试像上面这样的复制过程时,我对源数组所做的任何更改也会在消息数组中更改。我的意思是,如果我调用getContent()
源消息数组,消息数组也会受到影响。
如何复制所有邮件并将它们从文件夹中完全破坏?
public Message[] ConnectionToServer(String email, String password)
throws Exception
{
Properties props = System.getProperties();
props.setProperty("mail.imaps.partialfetch", "false");
URLName server = new URLName("imaps://" + email + ":" + password + "@imap.gmail.com/INBOX");
Session session = Session.getDefaultInstance(props, null);
folder = session.getFolder(server);
if (folder == null)
{
System.exit(0);
}
folder.open(Folder.READ_WRITE);
messages = folder.getMessages();
for (int i = messages.length - 1; i >= 23; i--)
{
Part p = messages[i];
subject = messages[i].getSubject();
if (messages[i].isSet(Flags.Flag.RECENT)) {
isSet = true;
System.out.println("Recent");
isSetlist.add(String.valueOf(isSet));
}
if (messages[i].isSet(Flags.Flag.SEEN))
{
isSet = false;
System.out.println("Read");
isSetlist.add(String.valueOf(isSet));
}
else
{
isSet = true;
System.out.println("Recent");
isSetlist.add(String.valueOf(isSet));
}
body = getText(p);
list.add(body);
}
return (Message[]) messages;
}
getContent 方法在我的 getText() 方法中:
public String getText(Part p) throws MessagingException, IOException {
if (p.isMimeType("text/*")) {
boolean textIsHtml = false;
String s = (String) p.getContent();
textIsHtml = p.isMimeType("text/html");
return String.valueOf(s);
}
if (p.isMimeType("multipart/alternative")) {
// prefer html text over plain text
Multipart mp = (Multipart) p.getContent();
String text = null;
for (int i = 0; i < mp.getCount(); i++) {
Part bp = mp.getBodyPart(i);
if (bp.isMimeType("text/plain")) {
if (text == null)
text = getText(bp);
continue;
} else if (bp.isMimeType("text/html")) {
String s = getText(bp);
if (s != null)
return String.valueOf(s);
} else {
return getText(bp);
}
}
return text;
} else if (p.isMimeType("multipart/*")) {
Multipart mp = (Multipart) p.getContent();
for (int i = 0; i < mp.getCount(); i++) {
String s = getText(mp.getBodyPart(i));
if (s != null)
return String.valueOf(s);
}
}
return null;
}