javax.mail.MessagingException：AppEngine 应用程序中的连接错误
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【中文标题】javax.mail.MessagingException：AppEngine 应用程序中的连接错误【英文标题】：javax.mail.MessagingException: Connection error in AppEngine app 【发布时间】：2012-11-10 09:22:16 【问题描述】：在我的 GAE 应用程序中，我无法使用 Java 邮件 API 发送邮件。 我收到以下错误。
javax.mail.MessagingException: Connection error (java.net.SocketException: Permission denied: Not allowed to issue a socket bind: permission denied.)
at org.apache.geronimo.javamail.transport.smtp.SMTPTransport.protocolConnect(SMTPTransport.java:408)
at javax.mail.Service.connect(Service.java:248)
at com.soa.util.SendMailSSL.sendMail(SendMailSSL.java:54)
at com.soa.managers.MailManager.mailApproved(MailManager.java:87)
at com.soa.managers.WidgetManager.approveRequest(WidgetManager.java:216)
at com.soa.servlets.WidgetServlet.doPost(WidgetServlet.java:71)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1166)
at com.google.appengine.api.socket.dev.DevSocketFilter.doFilter(DevSocketFilter.java:74)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at com.google.appengine.tools.development.ResponseRewriterFilter.doFilter(ResponseRewriterFilter.java:123)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at com.google.appengine.tools.development.HeaderVerificationFilter.doFilter(HeaderVerificationFilter.java:34)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at com.google.appengine.api.blobstore.dev.ServeBlobFilter.doFilter(ServeBlobFilter.java:61)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter(TransactionCleanupFilter.java:43)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at com.google.appengine.tools.development.StaticFileFilter.doFilter(StaticFileFilter.java:125)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at com.google.appengine.tools.development.BackendServersFilter.doFilter(BackendServersFilter.java:97)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:388)
at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182)
at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:765)
at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:418)
at com.google.appengine.tools.development.DevAppEngineWebAppContext.handle(DevAppEngineWebAppContext.java:94)
at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
at com.google.appengine.tools.development.JettyContainerService$ApiProxyHandler.handle(JettyContainerService.java:383)
at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
at org.mortbay.jetty.Server.handle(Server.java:326)
at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)
at org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:938)
at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:755)
at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:218)
at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:409)
at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582)
Caused by: java.net.SocketException: Permission denied: Not allowed to issue a socket bind: permission denied.
at com.google.appengine.api.socket.SocketApiHelper.translateError(SocketApiHelper.java:94)
at com.google.appengine.api.socket.SocketApiHelper.translateError(SocketApiHelper.java:105)
at com.google.appengine.api.socket.SocketApiHelper.makeSyncCall(SocketApiHelper.java:71)
at com.google.appengine.api.socket.AppEngineSocketImpl.createSocket(AppEngineSocketImpl.java:502)
at com.google.appengine.api.socket.AppEngineSocketImpl.bind(AppEngineSocketImpl.java:518)
at java.net.Socket.bind(Socket.java:577)
at java.net.Socket.<init>(Socket.java:373)
at java.net.Socket.<init>(Socket.java:249)
at org.apache.geronimo.javamail.transport.smtp.SMTPTransport.getConnectedSocket(SMTPTransport.java:1096)
at org.apache.geronimo.javamail.transport.smtp.SMTPTransport.getConnection(SMTPTransport.java:856)
at org.apache.geronimo.javamail.transport.smtp.SMTPTransport.protocolConnect(SMTPTransport.java:385)
... 40 more
我的代码是
package com.soa.util;
import java.util.*;
import javax.mail.Address;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.PasswordAuthentication;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.AddressException;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
public class SendMailSSL
public static boolean sendMail(String msg, String subject,
List<String> recipients)
Address[] emails = new InternetAddress[recipients.size()];
for (int i = 0; i < recipients.size(); i++)
try
//System.out.println(recipients.get(i));
emails[i] = new InternetAddress(recipients.get(i));
catch (AddressException e)
e.printStackTrace();
Properties props = new Properties();
props.put("mail.smtp.host", "smtp.gmail.com");
props.put("mail.smtp.auth", "true");
props.setProperty("mail.smtp.port", "587");
props.put("mail.smtp.starttls.enable", "true");
Session session = Session.getDefaultInstance(props,
new javax.mail.Authenticator()
protected PasswordAuthentication getPasswordAuthentication()
return new PasswordAuthentication(
"my_mail_id@gmail.com", "password");
);
try
MimeMessage message = new MimeMessage(session);
message.setFrom(new InternetAddress("my_mail_id@gmail.com"));// Sender
// Id.
message.addRecipients(Message.RecipientType.TO, emails);
message.setSubject(subject);
message.setText(msg);
// send message.
//Transport.send(message);
Transport transport = session.getTransport("smtp");
transport.connect("smtp.gmail.com", 587, "my_mail_id@gmail.com", "password");
transport.sendMessage(message, message.getAllRecipients());
transport.close();
System.out.println("message sent successfully");
return true;
catch (MessagingException e)
e.printStackTrace();
System.out.println("failed");
catch (Exception e)
e.printStackTrace();
System.out.println("failed :(");
return false;
我怎样才能让我的应用程序正常工作？
另外，如果我使用 Transport.send(message); 而不是创建 Transport 实例，我不会收到任何错误消息，但不会发送电子邮件。
我该如何解决。有人请帮助我。
【问题讨论】：
【参考方案1】：我终于找到了答案…… 问题是，Google 不允许您使用外部邮件 ID（非 gmail 或非 google 邮件 ID），因此您无法配置传输对象的连接属性。
您可以在 message.setFrom() 中指定您的应用引擎管理员邮件 ID，然后简单地使用 Transport.send() 发送它；
在我的例子中，Transport.send() 什么也没做，只是因为我试图从我的本地 Eclipse 项目中发送它。 Google 将仅从已部署的应用程序发送邮件。
因此对您的应用程序进行编码，如果没有错误，请将其部署到应用程序引擎。然后应用程序将开始发送邮件。
请参阅This google developers page 了解更多信息。
此外，删除所有 Oracle javax.mail jar。默认情况下，您的应用引擎 jar 具有特定于应用引擎的 javax.mail 类
【讨论】：
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