通过HtmlEmail类发送邮件报错，请高手解答。给20分。

Question

我的程序：
package until;
import org.apache.commons.mail.EmailException;
import org.apache.commons.mail.HtmlEmail;
public class Mail {
  public static void main(String arg[]){
   HtmlEmail email = new HtmlEmail();
   email.setHostName("smtp.163.com");//设置发信的smtp服务器
   try {
   email.addTo("[email protected]");
          //设置收件人帐号和收件人
   email.setFrom("[email protected]", "zhang_rzh");//设置发信的邮件帐号和发信人
   email.setSubject("HHHHH");//设置邮件主题
   email.setAuthentication("zhang_rzh","815241");//如果smtp服务器需要认证的话，在这里设置帐号、密码
   email.setHtmlMsg("ddddddddddd");//设置邮件正文和字符编码
   email.send();
} catch (EmailException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
  }
}
--------------------------
结果：
org.apache.commons.mail.EmailException: Sending the email to the following server failed : smtp.163.com:25
at org.apache.commons.mail.Email.sendMimeMessage(Email.java:1138)
at org.apache.commons.mail.Email.send(Email.java:1163)
at until.Mail.main(Mail.java:15)
Caused by: javax.mail.SendFailedException: Sending failed;
  nested exception is:
class javax.mail.MessagingException: Unknown SMTP host: smtp.163.com;
  nested exception is:
java.net.UnknownHostException: smtp.163.com
at javax.mail.Transport.send0(Transport.java:218)
at javax.mail.Transport.send(Transport.java:80)
at org.apache.commons.mail.Email.sendMimeMessage(Email.java:1128)
... 2 more请高手解答，非常感谢！！！！！！！！！

Answer 1

异常堆栈都提示你了，不认识的SMTP主机：smtp.163.com

Answer 2

到[email protected]邮箱设置里把服务器smtp.163.com启动

Answer 3

刚使用gmail测试了一下。发现好像是163服务器本身也有问题。建议楼主使用其他服务器测试一下程序。

Answer 4

我的GMAIL已經連不到163了 

Answer 5

package com.zznode.gixpert.util;import java.util.Properties;import javax.mail.Message;
import javax.mail.PasswordAuthentication;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
/***邮件发送器***/
public class EmailSender {
 
private  String subject;
/***定义邮件正文**/
private  String checkinreport;
 
/**邮件目的地**/
private  String destination ;
/**发送邮件的邮箱地址**/
private  String fountainhead;
/***发送邮件邮箱密码***/
private  String password; 
private  String smtphost;
private  String smtpcom;

public void setPramater(String subject,String checkinreport,String destination,String fountainhead,String password,String smtphost,String smtpcom){
this.subject=subject;
this.checkinreport=checkinreport;
this.destination=destination;
this.fountainhead=fountainhead;
this.password=password;
this.smtphost=smtpcom;
this.smtpcom=smtpcom;
} public static void main(String[] args) {
System.out.println("test mail send");

 String subject="1111111111";
/***定义邮件正文**/
  String checkinreport = "正文";
// static String emailadd = "[email protected],[email protected]";: static String emailadd = 
/**邮件目的地**/
  String destination = "[email protected],[email protected],[email protected]";;
/**发送邮件的邮箱地址**/
  String fountainhead="[email protected]";
/***发送邮件邮箱密码***/
  String password="111"; 
  String smtphost="mail.smtp.host";
  String smtpcom="smtp.163.com";
EmailSender es=new EmailSender();
//es.setPramater(subject, checkinreport, destination, fountainhead, password, smtphost, smtpcom);
es.setSubject(subject);
es.setCheckinreport(checkinreport);
es.setDestination(destination);
es.setFountainhead(fountainhead);
es.setPassword(password);
es.setSmtphost(smtphost);
es.setSmtpcom(smtpcom);
boolean f =es.send();
System.out.println(" mail send success");
} public  boolean send() {
System.out.println("-----"+subject+ checkinreport+ destination+ fountainhead+password+smtphost+smtpcom);
Properties props = System.getProperties(); try {
props.put(smtphost, smtpcom);
} catch (Exception ex) {
return false;
}
// Session session = Session.getDefaultInstance(props, null);
props.put("mail.smtp.auth", "true");
MyAuthenticator myauth = new MyAuthenticator(fountainhead, password);
Session session = Session.getDefaultInstance(props, myauth);
Message msg = new MimeMessage(session);
InternetAddress[] toAddrs = null, ccAddrs = null; try {
/**建立邮箱地址**/
toAddrs = InternetAddress.parse(destination, false);
msg.setRecipients(Message.RecipientType.TO, toAddrs); msg.setFrom(new InternetAddress(fountainhead));
/***邮件标题**/
msg.setSubject(subject);
/***邮件正文***/
msg.setText(checkinreport);
msg.saveChanges();
Transport.send(msg);
return true; } catch (Exception ex) {
ex.printStackTrace();
System.out.println(ex);
return false;
}
} public String getSubject() {
return subject;
} public void setSubject(String subject) {
this.subject = subject;
} public String getCheckinreport() {
return checkinreport;
} public void setCheckinreport(String checkinreport) {
this.checkinreport = checkinreport;
} public String getDestination() {
return destination;
} public void setDestination(String destination) {
this.destination = destination;
} public String getFountainhead() {
return fountainhead;
} public void setFountainhead(String fountainhead) {
this.fountainhead = fountainhead;
} public String getPassword() {
return password;
} public void setPassword(String password) {
this.password = password;
} public String getSmtphost() {
return smtphost;
} public void setSmtphost(String smtphost) {
this.smtphost = smtphost;
} public String getSmtpcom() {
return smtpcom;
} public void setSmtpcom(String smtpcom) {
this.smtpcom = smtpcom;
}}
 
class MyAuthenticator extends javax.mail.Authenticator {
private String strUser;
private String strPwd; public MyAuthenticator(String user, String password) {
this.strUser = user;
this.strPwd = password;
} protected PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication(strUser, strPwd);
}
}

Answer 6

我用上面的程序测试，怎么出现下面报错：  是包找不到，还是冲突？Exception in thread "main" java.lang.NoClassDefFoundError: com/sun/activation/registries/LogSupport
at javax.activation.MailcapCommandMap.<init>(MailcapCommandMap.java:140)
at javax.activation.CommandMap.getDefaultCommandMap(CommandMap.java:61)
at javax.activation.DataHandler.getCommandMap(DataHandler.java:153)
at javax.activation.DataHandler.getDataContentHandler(DataHandler.java:611)
at javax.activation.DataHandler.writeTo(DataHandler.java:315)
at javax.mail.internet.MimeUtility.getEncoding(MimeUtility.java:248)
at javax.mail.internet.MimeBodyPart.updateHeaders(MimeBodyPart.java:1268)
at javax.mail.internet.MimeMessage.updateHeaders(MimeMessage.java:2012)
at javax.mail.internet.MimeMessage.saveChanges(MimeMessage.java:1980)
at EmailSender.send(EmailSender.java:93)
at EmailSender.main(EmailSender.java:63)