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我需要使用Gmail的SMTP和javax.mail API發送郵件。 我使用的代碼，在Android中成功運行，如果我將它帶到Java應用程序或嘗試在Java Web應用程序中使用它，它會開始製造麻煩。 我花時間試圖瞭解有什麼區別，但沒辦法！ 我的代碼如下：Java發送郵件，需要激活時間
public class GMailSender extends Authenticator
{
private final String mailhost;
private final String password;
private final Session session;
private final String user;
public GMailSender(String username, String password)
{
this.mailhost = "smtp.gmail.com";
this.user = username;
this.password = password;
Properties properties = new Properties();
properties.setProperty("mail.transport.protocol", "smtp");
properties.setProperty("mail.host", mailhost);
properties.put("mail.smtp.auth", "true");
properties.put("mail.smtp.socketFactory.port", "465");
properties.put("mail.smtp.socketFactory.class", "javax.net.ssl.SSLSocketFactory");
properties.put("mail.smtp.debug", "true");
properties.setProperty("mail.smtp.quitwait", "false");
System.out.println("Creating session ...");
session = Session.getInstance(properties, this);
System.out.println("Session createed ...");
}
@Override
protected PasswordAuthentication getPasswordAuthentication()
{
System.out.println("Authintecation ...");
return new PasswordAuthentication(user, password);
}
public synchronized void sendMail(String subject, String dataHandler, String senderAddress, String recepeintAddress)
throws Exception
{
MimeMessage mimemessage;
mimemessage = new MimeMessage(session);
DataHandler datahandler = new DataHandler(new ByteArrayDataSource(dataHandler.getBytes(), "text/plain"));
mimemessage.setSender(new InternetAddress(senderAddress));
mimemessage.setSubject(subject);
mimemessage.setDataHandler(datahandler);
mimemessage.setRecipient(javax.mail.Message.RecipientType.TO, new InternetAddress(recepeintAddress));
System.out.println("Sending ...");
Transport transport = session.getTransport("smtp");
transport.send(mimemessage);
System.out.println("Sent!");
}
static {
Security.addProvider(new JSSEProvider());
}
public static void main(String[] args){
System.out.println("Starting email ...");
GMailSender sender = new GMailSender("[email protected]", "my password");
try {
sender.sendMail("Test", "alot of data", "[email protected]", "[email protected]");
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
public final class JSSEProvider extends Provider {
private static final long serialVersionUID = 1L;
public JSSEProvider() {
super("HarmonyJSSE", 1.0, "Harmony JSSE Provider");
AccessController
.doPrivileged(new java.security.PrivilegedAction<Void>() {
@Override
public Void run() {
put("SSLContext.TLS",
"org.apache.harmony.xnet.provider.jsse.SSLContextImpl");
put("Alg.Alias.SSLContext.TLSv1", "TLS");
put("KeyManagerFactory.X509",
"org.apache.harmony.xnet.provider.jsse.KeyManagerFactoryImpl");
put("TrustManagerFactory.X509",
"org.apache.harmony.xnet.provider.jsse.TrustManagerFactoryImpl");
return null;
}
});
}
}
當我運行我的代碼，我得到了以下內容：
> Starting email ...
> Creating session ...
> Session createed ...
> Sending ...
> Authintecation ...
然後，它需要大約10分鐘，用下面的返回：
> javax.mail.MessagingException: Could not connect to SMTP host:
> smtp.gmail.com, port: 465, response: -1
> at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:1379)
> at com.sun.mail.smtp.SMTPTransport.protocolConnect(SMTPTransport.java:412)
> at javax.mail.Service.connect(Service.java:310)
> at javax.mail.Service.connect(Service.java:169)
> at javax.mail.Service.connect(Service.java:118)
> at javax.mail.Transport.send0(Transport.java:188)
> at javax.mail.Transport.send(Transport.java:118)
> at com.srycrm.mail.GMailSender.sendMail(GMailSender.java:66)
> at org.apache.jsp.send_jsp._jspService(send_jsp.java:85)
> at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
> at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:432)
> at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390)
> at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
> at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
> at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
> at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
任何人都可以幫助我！ 謝謝。
看看：http：//stackoverflow.com/questions/11029444/javax-mail-messagingexception-could-not-connect-to-smtp-host，看看它是否有幫助 – user3487063 2014-09-18 22:24:03
我已經看到了，這是一個不同的情況。正如你所看到的，返回的錯誤代碼是不同的，也是在創建會話之後。 – 2014-09-18 22:26:27