我有一个电子邮件处理器java应用程序，它连接outlook并列出文件夹消息，然后决定它是否下载电子邮件。我的一些电子邮件有以下问题。
列出以下代码：
Session session = Session.getInstance(props, new myAuthenticator());
store = session.getStore(PROTOCOL);
store.connect(HOST, USERNAME, PASSWORD);
inbox_unknown = store.getDefaultFolder().getFolder("INBOX_UNKNOWN");
inbox_unknown.open(Folder.READ_ONLY);
messages = inbox_unknown.getMessages();
for(Message m : messages){
Enumeration headers = m.getAllHeaders();
while(headers.hasMoreElements()){
Header element = (Header)headers.nextElement();
if ("Message-ID".equals(element.getName()))
System.err.println(element.getValue());
}
}
结果是：
<CAFSBYLHvG9d=MkE2Gf+q_EgoaAN8yRVHHsg5emO0w92GV6-7LA@mail.gmail.com>
<CAFSBYLGs-w4=JrgrYh_6kpiEc9NhjCsc76gXVvLWyW-=QN+kMw@mail.gmail.com>
但是当我使用以下代码搜索这些消息ID时：
messages = inbox_unknown.search(new MessageIDTerm("<CAFSBYLGs-w4=JrgrYh_6kpiEc9NhjCsc76gXVvLWyW-=QN+kMw@mail.gmail.com>"));//not found
messages = inbox_unknown.search(new MessageIDTerm("<CAFSBYLHvG9d=MkE2Gf+q_EgoaAN8yRVHHsg5emO0w92GV6-7LA@mail.gmail.com>"));//found
虽然列出了标识为<CAFSBYLHvG9d=MkE2Gf+q_EgoaAN8yRVHHsg5emO0w92GV6-7LA@mail.gmail.com>的邮件，但当我搜索此单个项目时，我会得到空的返回数组。对于其他消息ID，它按预期返回消息对象。你知道这可能是什么问题吗？
PS：这封邮件来自同一个人，这只是例如，虽然可以列出，但仍有许多类似的邮件未找到。
注意：使用java7，java.mail-1.4 api，ms outlook服务器，IMAP4作为协议。 注2：添加了java调试输出
DEBUG: setDebug: JavaMail version 1.5.5
DEBUG: getProvider() returning javax.mail.Provider[STORE,imap,com.sun.mail.imap.IMAPStore,Oracle]
DEBUG IMAP: mail.imap.fetchsize: 16384
DEBUG IMAP: mail.imap.ignorebodystructuresize: false
DEBUG IMAP: mail.imap.statuscachetimeout: 1000
DEBUG IMAP: mail.imap.appendbuffersize: -1
DEBUG IMAP: mail.imap.minidletime: 10
DEBUG IMAP: closeFoldersOnStoreFailure
DEBUG IMAP: trying to connect to host "outlook.abck.com.tr", port 143, isSSL false
* OK The Microsoft Exchange IMAP4 service is ready.
A0 CAPABILITY
* CAPABILITY IMAP4 IMAP4rev1 AUTH=NTLM AUTH=GSSAPI AUTH=PLAIN UIDPLUS CHILDREN IDLE NAMESPACE LITERAL+
A0 OK CAPABILITY completed.
DEBUG IMAP: AUTH: NTLM
DEBUG IMAP: AUTH: GSSAPI
DEBUG IMAP: AUTH: PLAIN
DEBUG IMAP: protocolConnect login, host=outlook.abck.com.tr, user=usera, password=<non-null>
DEBUG IMAP: AUTHENTICATE PLAIN command trace suppressed
DEBUG IMAP: AUTHENTICATE PLAIN command result: A1 OK AUTHENTICATE completed.
A2 CAPABILITY
* CAPABILITY IMAP4 IMAP4rev1 AUTH=NTLM AUTH=GSSAPI AUTH=PLAIN UIDPLUS CHILDREN IDLE NAMESPACE LITERAL+
A2 OK CAPABILITY completed.
DEBUG IMAP: AUTH: NTLM
DEBUG IMAP: AUTH: GSSAPI
DEBUG IMAP: AUTH: PLAIN
DEBUG IMAP: connection available -- size: 1
A3 EXAMINE Test
* 2 EXISTS
* 2 RECENT
* FLAGS (\Seen \Answered \Flagged \Deleted \Draft $MDNSent)
* OK [PERMANENTFLAGS ()] Permanent flags
* OK [UIDVALIDITY 268114] UIDVALIDITY value
* OK [UIDNEXT 4] The next unique identifier value
A3 OK [READ-ONLY] EXAMINE completed.
A4 SEARCH HEADER Message-ID <CAFSBYLGs-w4=JrgrYh_6kpiEc9NhjCsc76gXVvLWyW-=QN+kMw@mail.gmail.com> ALL
* SEARCH
A4 OK SEARCH completed.
A5 SEARCH HEADER Message-ID <CAFSBYLHvG9d=MkE2Gf+q_EgoaAN8yRVHHsg5emO0w92GV6-7LA@mail.gmail.com> ALL
* SEARCH 2
A5 OK SEARCH completed.
A6 FETCH 1 (BODY.PEEK[HEADER])
* 1 FETCH (BODY[HEADER] {1403}
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A7 OK FETCH completed.
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DEBUG IMAP: added an Authenticated connection -- size: 1
A9 LOGOUT
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DEBUG IMAP: IMAPStore connection dead
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