我正在尝试使用 java 邮件 api 连接到邮件服务器，其中包含用户 loginId 密码和主机名。但是，如果任何一个 id 无法建立连接，那么即使它们具有正确的凭据，以下 id 也无法授权。
我必须在循环后关闭存储值吗？
sessions = Session.getDefaultInstance(properties);
store = sessions.getStore(emailAccType);
store.connect(emailHost,emailId, emailPwd);
我需要在 try/catch 的 finally block 中关闭。
对于以下错误。
javax.mail.MessagingException: Connect failed;
nested exception is:
javax.net.ssl.SSLException: Unrecognized SSL message, plaintext connection?
at com.sun.mail.pop3.POP3Store.protocolConnect(POP3Store.java:161)
at javax.mail.Service.connect(Service.java:288)
at javax.mail.Service.connect(Service.java:169)
at com.scheduler.utils.QuartzImplementation.<init>(QuartzImplementation.java:77)
at com.scheduler.utils.SchedulerRedirect.execute(SchedulerRedirect.java:31)
at org.quartz.core.JobRunShell.run(JobRunShell.java:202)
at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:529)
Caused by: javax.net.ssl.SSLException: Unrecognized SSL message, plaintext connection?
at com.sun.net.ssl.internal.ssl.InputRecord.handleUnknownRecord(Unknown Source)
at com.sun.net.ssl.internal.ssl.InputRecord.read(Unknown Source)
at com.sun.net.ssl.internal.ssl.SSLSocketImpl.readRecord(Unknown Source)
at com.sun.net.ssl.internal.ssl.SSLSocketImpl.performInitialHandshake(Unknown Source)
at com.sun.net.ssl.internal.ssl.SSLSocketImpl.readDataRecord(Unknown Source)
at com.sun.net.ssl.internal.ssl.AppInputStream.read(Unknown Source)
at java.io.BufferedInputStream.fill(Unknown Source)
at java.io.BufferedInputStream.read(Unknown Source)
at java.io.DataInputStream.readLine(Unknown Source)
at com.sun.mail.pop3.Protocol.simpleCommand(Protocol.java:360)
at com.sun.mail.pop3.Protocol.<init>(Protocol.java:104)
at com.sun.mail.pop3.POP3Store.getPort(POP3Store.java:214)
at com.sun.mail.pop3.POP3Store.protocolConnect(POP3Store.java:157)
这是第一次执行，但如果执行失败，就会出现此问题。 提前致谢
最佳答案
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请确保您已完整阅读 java 邮件 API 常见问题解答。
关于java - 无法使用 javamail api 建立连接，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/23075140/