java无法使用javamail api建立连接

Question

我正在尝试使用JavaMail api，使用用户loginId密码和主机名连接到邮件服务器。但是，如果其中任何一个id无法建立连接，那么即使以下id具有正确的凭据，它们也无法授权

我是否必须在循环后关闭存储值

      sessions = Session.getDefaultInstance(properties);
      store = sessions.getStore(emailAccType);
      store.connect(emailHost,emailId, emailPwd);

我需要在try/catch的最后一块中完成的内容

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)

这是它第一次执行，但是如果一个失败了，那么这个问题就会出现。 提前谢谢

Answer 1

Refer the answer to this question

请确保您已经完整阅读了java mail API常见问题解答