我想用java程序發送電子郵件。 我得到如下的豁免權

Question

我得到了這個例外：

javax.mail.MessagingException: Unknown SMTP host: server.gmail.com;
  nested exception is:
    java.net.UnknownHostException: server.gmail.com
    at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:1280)
    at com.sun.mail.smtp.SMTPTransport.protocolConnect(SMTPTransport.java:370)
    at javax.mail.Service.connect(Service.java:275)
    at javax.mail.Service.connect(Service.java:156)
    at javax.mail.Service.connect(Service.java:105)
    at javax.mail.Transport.send0(Transport.java:168)
    at javax.mail.Transport.send(Transport.java:98)
    at com.SimpleSendEmail.main(SimpleSendEmail.java:33)
Caused by: java.net.UnknownHostException: server.gmail.com
    at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:177)
    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:232)
    at com.sun.mail.util.SocketFetcher.getSocket(SocketFetcher.java:189)
    at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:1250)
    ... 7 more

我也包含了所需的jar文件。 請幫我解決這個例外。

Answer 1

嘗試使用smtp.gmail.com作為您的主機。

Answer 2

你的smtp主機顯然是錯的

嘗試只有smtp.gmail.com