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美好的一天，人们！

我正在尝试使用 gmail smtp 服务器通过 java 代码发送电子邮件已有一段时间了，但我仍然不走运获得成功。我尝试执行本教程中的代码

我得到了一个例外。以下是日志跟踪：

javax.mail.MessagingException: Could not connect to SMTP host: smtp.gmail.com, port: 465;
  nested exception is:
    java.net.ConnectException: Connection refused: connect
    at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:1961)
    at com.sun.mail.smtp.SMTPTransport.protocolConnect(SMTPTransport.java:654)
    at javax.mail.Service.connect(Service.java:317)
    at javax.mail.Service.connect(Service.java:176)
    at javax.mail.Service.connect(Service.java:125)
    at javax.mail.Transport.send0(Transport.java:194)
    at javax.mail.Transport.send(Transport.java:124)
    at ph.net.poolbeta.emailer.EmailDriver.sendEmailSSL(EmailDriver.java:108)
    at ph.net.poolbeta.emailer.EmailDriver.main(EmailDriver.java:27)
Caused by: java.net.ConnectException: Connection refused: connect
    at java.net.PlainSocketImpl.socketConnect(Native Method)
    at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:351)
    at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:213)
    at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:200)
    at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366)
    at java.net.Socket.connect(Socket.java:529)
    at java.net.Socket.connect(Socket.java:478)
    at com.sun.mail.util.SocketFetcher.createSocket(SocketFetcher.java:321)
    at com.sun.mail.util.SocketFetcher.getSocket(SocketFetcher.java:237)
    at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:1927)
    ... 8 more

我用谷歌搜索了连接异常错误，并尝试了一些建议：

  1. ping smtp.gmail.com --> 成功。
  2. telnet smtp.gmail.com 'port' --> 不成功。我试过 465 和 587

关于网络还有什么需要做的吗？请帮我解决这个问题。提前致谢。

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