Java + 腾讯企业邮箱 + javamail + SSL 发送邮件（转载：http://www.cnblogs.com/LUA123/p/5575134.html）

1 e.account=你的邮箱用户名
2 e.pass=你的邮箱登录密码
3 e.from=你的邮箱用户名
4 e.host=smtp.exmail.qq.com
5 e.port=465
6 e.protocol=smtp

  1 import java.io.IOException;
  2 import java.io.InputStream;
  3 import java.io.UnsupportedEncodingException;
  4 import java.security.GeneralSecurityException;
  5 import java.util.Date;
  6 import java.util.Properties;
  7 
  8 import javax.mail.Authenticator;
  9 import javax.mail.Message;
 10 import javax.mail.MessagingException;
 11 import javax.mail.PasswordAuthentication;
 12 import javax.mail.Session;
 13 import javax.mail.Transport;
 14 import javax.mail.internet.InternetAddress;
 15 import javax.mail.internet.MimeMessage;
 16 
 17 import com.sun.mail.util.MailSSLSocketFactory;
 18 
 19 public class SendEmailUtils {
 20 
 21     private static String account;//登录用户名
 22     private static String pass;        //登录密码
 23     private static String from;        //发件地址
 24     private static String host;        //服务器地址
 25     private static String port;        //端口
 26     private static String protocol; //协议
 27     
 28     static{
 29         Properties prop = new Properties();
 30         InputStream instream = ClassLoader.getSystemResourceAsStream("email.properties");
 31         try {
 32             prop.load(instream);
 33         } catch (IOException e) {
 34             System.out.println("加载属性文件失败");
 35         }
 36         account = prop.getProperty("e.account");
 37         pass = prop.getProperty("e.pass");
 38         from = prop.getProperty("e.from");
 39         host = prop.getProperty("e.host");
 40         port = prop.getProperty("e.port");
 41         protocol = prop.getProperty("e.protocol");
 42     }
 43     //用户名密码验证，需要实现抽象类Authenticator的抽象方法PasswordAuthentication
 44     static class MyAuthenricator extends Authenticator{  
 45         String u = null;  
 46         String p = null;  
 47         public MyAuthenricator(String u,String p){  
 48             this.u=u;  
 49             this.p=p;  
 50         }  
 51         @Override  
 52         protected PasswordAuthentication getPasswordAuthentication() {  
 53             return new PasswordAuthentication(u,p);  
 54         }  
 55     }
 56     
 57     private String to;    //收件人
 58     private String id;    //重置密码地址标识(这句话是我的业务需要，你们可以不要)
 59     
 60     public SendEmailUtils(String to, String id) {
 61         this.to = to;
 62         this.id = id;
 63     }
 64 
 65     public void send(){
 66         Properties prop = new Properties();
 67         //协议
 68         prop.setProperty("mail.transport.protocol", protocol);
 69         //服务器
 70         prop.setProperty("mail.smtp.host", host);
 71         //端口
 72         prop.setProperty("mail.smtp.port", port);
 73         //使用smtp身份验证
 74         prop.setProperty("mail.smtp.auth", "true");
 75         //使用SSL，企业邮箱必需！
 76         //开启安全协议
 77         MailSSLSocketFactory sf = null;
 78         try {
 79             sf = new MailSSLSocketFactory();
 80             sf.setTrustAllHosts(true);
 81         } catch (GeneralSecurityException e1) {
 82             e1.printStackTrace();
 83         }
 84         prop.put("mail.smtp.ssl.enable", "true");
 85         prop.put("mail.smtp.ssl.socketFactory", sf);
 86         //
 87         Session session = Session.getDefaultInstance(prop, new MyAuthenricator(account, pass));
 88         session.setDebug(true);
 89         MimeMessage mimeMessage = new MimeMessage(session);
 90         try {
 91             mimeMessage.setFrom(new InternetAddress(from,"XXX"));
 92             mimeMessage.addRecipient(Message.RecipientType.TO, new InternetAddress(to));
 93             mimeMessage.setSubject("XXX账户密码重置");
 94             mimeMessage.setSentDate(new Date());
 95             mimeMessage.setText("您在XXX使用了密码重置功能，请点击下面链接重置密码:\n"
 96                     + "http://localhost:8080/XXX/ResetPassword?id="
 97                     + id);
 98             mimeMessage.saveChanges();
 99             Transport.send(mimeMessage);
100         } catch (MessagingException e) {
101             e.printStackTrace();
102         } catch (UnsupportedEncodingException e) {
103             e.printStackTrace();
104         }
105     }
106 
107 }

@Test
    public void test4(){
        SendEmailUtils s = new SendEmailUtils("收件邮箱",
                “标识码”);
        s.send();
    }