大家好,我刚刚尝试获取一些Java代码,以通过gmail向Java用户发送电子邮件,这就是我所拥有的：
@ManagedBean
@ViewScoped
public class email {
// Set up the SMTP server.
java.util.Properties props = new java.util.Properties();
public void mail() {
System.out.println("Called mail");
props.put(
"mail.smtp.gmail", "");
props.put("mail.smtp.port", "587");
Session session = Session.getDefaultInstance(props, null);
// Construct the message
String to = "cam01342@myport.ac.uk";
String from = "richard.dennis@port.ac.uk";
String subject = "Hello";
Message msg = new MimeMessage(session);
try {
System.out.println("Setting up the email");
msg.setFrom(new InternetAddress(from));
msg.setRecipient(Message.RecipientType.TO, new InternetAddress(to));
System.out.println("here");
msg.setSubject("Print Job");
msg.setText("Hi,
How are you?");
Transport.send(msg);
System.out.println("Sending message"); //does not get to this part
} catch (MessagingException e) {
// Error.
}
}
}
它在运行等时没有错误,我在控制台中没有收到发送消息,而只是Transport.send(msg)阻塞了我做错了什么？ gmail的设置都可以吗？
编辑：
@ManagedBean
@ViewScoped
public class email {
// Set up the SMTP server.
java.util.Properties props = new java.util.Properties();
public void mail() {
System.out.println("Called mail");
String host = "";
String from = "------------";
String pass = "----";
props.put("mail.smtp.starttls.enable", "true"); // added this line
props.put("mail.smtp.host", host);
props.put("mail.smtp.user", from);
props.put("mail.smtp.password", pass);
props.put("mail.smtp.port", "587");
props.put("mail.smtp.auth", "true");
Session session = Session.getDefaultInstance(props, null);
// Construct the message
String to = "--------";
String subject = "Hello";
Message msg = new MimeMessage(session);
try {
System.out.println("Setting up the email");
msg.setFrom(new InternetAddress(from));
msg.setRecipient(Message.RecipientType.TO, new InternetAddress(to));
System.out.println("here");
msg.setSubject("Print Job");
msg.setText("Hi,
How are you?");
Transport.send(msg);
System.out.println("Sending message"); //does not get to this part
} catch (MessagingException e) {
// Error.
}
}
}
编辑：
在提供给我的链接之一中尝试示例：
@ManagedBean
@ViewScoped
public class email {
// Set up the SMTP server.
public void mail() throws MessagingException {
String host = "";
String from = "------------";
String pass = "------";
Properties props = System.getProperties();
props.put("mail.smtp.starttls.enable", "true"); // added this line
props.put("mail.smtp.host", host);
props.put("mail.smtp.user", from);
props.put("mail.smtp.password", pass);
props.put("mail.smtp.port", "587");
props.put("mail.smtp.auth", "true");
String[] to = {"-----------"}; // added this line
Session session = Session.getDefaultInstance(props, null);
MimeMessage message = new MimeMessage(session);
message.setFrom(new InternetAddress(from));
InternetAddress[] toAddress = new InternetAddress[to.length];
// To get the array of addresses
for (int i = 0; i < to.length; i++) { // changed from a while loop
toAddress[i] = new InternetAddress(to[i]);
}
System.out.println(Message.RecipientType.TO);
for (int i = 0; i < toAddress.length; i++) { // changed from a while loop
message.addRecipient(Message.RecipientType.TO, toAddress[i]);
}
message.setSubject("sending in a group");
message.setText("Welcome to JavaMail");
Transport transport = session.getTransport("smtp");
transport.connect(host, from, pass);
transport.sendMessage(message, message.getAllRecipients());
transport.close();
}
}
这抛出了这个错误：
INFO: To
WARNING: #{email.mail()}: javax.mail.MessagingException: Could not connect to SMTP host: , port: 25;
nested exception is:
.ConnectException: Connection timed out: connect
javax.faces.FacesException: #{email.mail()}: javax.mail.MessagingException: Could not connect to SMTP host: , port: 25;
nested exception is:
.ConnectException: Connection timed out: connect
at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:118)
at ponent.UICommand.broadcast(UICommand.java:315)
at ponent.UIViewRoot.broadcastEvents(UIViewRoot.java:794)
at ponent.UIViewRoot.processApplication(UIViewRoot.java:1259)
at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:81)
at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)
at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:593)
at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1550)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:343)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:217)
at org.primefaces.webapp.filter.FileUploadFilter.doFilter(FileUploadFilter.java:79)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:256)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:217)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:279)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:655)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:595)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:161)
at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:331)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:231)
at com.sun.enterprise.v3.services.impl.ContainerMapper$AdapterCallable.call(ContainerMapper.java:317)
at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:195)
at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:860)
at com.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:757)
at com.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:1056)
at com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:229)
at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:137)
at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:104)
at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:90)
at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:79)
at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:54)
at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:59)
at com.sun.grizzly.ContextTask.run(ContextTask.java:71)
at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:532)
at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:513)
at java.lang.Thread.run(Thread.java:722)
Caused by: javax.faces.el.EvaluationException: javax.mail.MessagingException: Could not connect to SMTP host: , port: 25;
nested exception is:
.ConnectException: Connection timed out: connect
at ponent.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:102)
at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:102)
... 36 more
Caused by: javax.mail.MessagingException: Could not connect to SMTP host: , port: 25;
nested exception is:
.ConnectException: Connection timed out: connect
at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:1934)
at com.sun.mail.smtp.SMTPTransport.protocolConnect(SMTPTransport.java:638)
at javax.mail.Service.connect(Service.java:295)
at javax.mail.Service.connect(Service.java:176)
at richard.fileupload.email.mail(email.java:101)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at javax.el.BeanELResolver.invokeMethod(BeanELResolver.java:779)
at javax.el.BeanELResolver.invoke(BeanELResolver.java:528)
at positeELResolver.invoke(CompositeELResolver.java:257)
at com.sun.el.parser.AstValue.invoke(AstValue.java:248)
at com.sun.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:302)
at org.jboss.weld.util.el.ForwardingMethodExpression.invoke(ForwardingMethodExpression.java:39)
at org.jboss.weld.el.WeldMethodExpression.invoke(WeldMethodExpression.java:50)
at com.sun.faces.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:105)
at ponent.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:88)
... 37 more
Caused by: .ConnectException: Connection timed out: connect
at .DualStackPlainSocketImpl.connect0(Native Method)
at .DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:69)
at .AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:339)
at .AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:200)
at .AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:182)
at .PlainSocketImpl.connect(PlainSocketImpl.java:157)
at .SocksSocketImpl.connect(SocksSocketImpl.java:391)
at .Socket.connect(Socket.java:579)
at .Socket.connect(Socket.java:528)
at com.sun.mail.util.SocketFetcher.createSocket(SocketFetcher.java:288)
at com.sun.mail.util.SocketFetcher.getSocket(SocketFetcher.java:231)
at com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:1900)
... 54 more
