google apps 企业邮箱 发送 代码

注意需要最新的mail.jar

package xueyuan.commons;

/**
* Created by IntelliJ IDEA.
* User: Administrator
* Date: 2009-2-15
* Time: 14:02:18
* To change this template use File | Settings | File Templates.
*/
import java.io.PrintStream;
import java.util.Properties;
import javax.activation.DataHandler;
import javax.activation.FileDataSource;
import javax.mail.internet.*;
import javax.mail.*;

public class SendMail
{
private MimeMessage mimeMsg;
  private Session session;
  private Properties props;
  private boolean needAuth;
  private String username;
  private String password;
  private Multipart mp;
    
public SendMail(String smtp)
{
     needAuth = false;
     username = "";
     password = "";
     setSmtpHost(smtp);
     createMimeMessage();
}

public void setSmtpHost(String hostName)
{
     System.out.println("设置系统属性：mail.smtp.host = " + hostName);
     if(props == null)
         props = System.getProperties();
     props.put("mail.smtp.host", hostName);
//     System.out.println(props.get("mail.smtp.host"));
     //gmail需要的协议
     props.put("mail.smtp.socketFactory.class",  "javax.net.ssl.SSLSocketFactory");
//     System.out.println(props.get("mail.smtp.socketFactory.class"));
     //gmail特殊端口
     props.put("mail.smtp.port","465");
}

public boolean createMimeMessage()
{
     try
     {
         System.out.println("准备获取邮件会话对象！");
         PopupAuthenticator popAuthenticator = new PopupAuthenticator();
         PasswordAuthentication   pop  =  popAuthenticator.performCheck(username,password);
         session = Session.getDefaultInstance(props, popAuthenticator);
     }
     catch(Exception e)
     {
         System.err.println("获取邮件会话对象时发生错误！" + e);
//         e.printStackTrace();
         return false;
     }
     System.out.println("准备创建MIME邮件对象！");
     try
     {
         mimeMsg = new MimeMessage(session);
         mp = new MimeMultipart();
     }
     catch(Exception e)
     {
         System.err.println("创建MIME邮件对象失败！" + e);
         //         e.printStackTrace();
         return false;
     }
     return true;
}

public void setNeedAuth(boolean need)
{
     System.out.println("设置smtp身份认证：mail.smtp.auth = " + need);
     if(props == null)
         props = System.getProperties();
     if(need)
     //设置需要协议支持
         props.put("mail.smtp.auth", "true");
     else
         props.put("mail.smtp.auth", "false");
}

public void setNamePass(String name, String pass)
{
//     System.out.println("程序得到用户名与密码");
     username = name;
     password = pass;
}

public boolean setSubject(String mailSubject)
{
//     System.out.println("设置邮件主题！");
     try
     {
         mimeMsg.setSubject(mailSubject);
     }
     catch(Exception e)
     {
//         System.err.println("设置邮件主题发生错误！");
         return false;
     }
     return true;
}

public boolean setBody(String mailBody)
{
     try
     {
//         "设置邮件体格式"
         BodyPart bp = new MimeBodyPart();
         bp.setContent("<meta http-equiv=Content-Type content=text/html; charset=gb2312>" + mailBody, "text/html;charset=GB2312");
         mp.addBodyPart(bp);
     }
     catch(Exception e)
     {
         System.err.println("设置邮件正文时发生错误！" + e);
         return false;
     }
     return true;
}

public boolean addFileAffix(String filename)
{
     System.out.println("增加邮件附件：" + filename);
     try
     {
         BodyPart bp = new MimeBodyPart();
         FileDataSource fileds = new FileDataSource(filename);
         bp.setDataHandler(new DataHandler(fileds));
         bp.setFileName(fileds.getName());
         mp.addBodyPart(bp);
     }
     catch(Exception e)
     {
         System.err.println("增加邮件附件：" + filename + "发生错误！" + e);
         return false;
     }
     return true;
}

public boolean setFrom(String from)
{
     System.out.println("设置发信人！");
     try
     {
         mimeMsg.setFrom(new InternetAddress(from));
     }
     catch(Exception e)
     {
         return false;
     }
     return true;
}

public boolean setTo(String to)
{
     System.out.println("设置收信人");
     if(to == null)
         return false;
     try
     {
         mimeMsg.setRecipients(javax.mail.Message.RecipientType.TO, InternetAddress.parse(to));
     }
     catch(Exception e)
     {
         return false;
     }
     return true;
}

public boolean setCopyTo(String copyto)
{
     System.out.println("发送附件到");
     if(copyto == null)
         return false;
     try
     {
         mimeMsg.setRecipients(javax.mail.Message.RecipientType.CC, InternetAddress.parse(copyto));
     }
     catch(Exception e)
     {
         return false;
     }
     return true;
}

public boolean sendout()
{
     try
     {
         mimeMsg.setContent(mp);
         mimeMsg.saveChanges();
         System.out.println("正在发送邮件....");
         PopupAuthenticator popAuthenticator = new PopupAuthenticator();
         PasswordAuthentication   pop  =  popAuthenticator.performCheck(username,password);
         Session mailSession = Session.getInstance(props,popAuthenticator);
         //协议种类
         Transport transport = mailSession.getTransport("smtp");
         transport.connect((String)props.get("mail.smtp.host"), username, password);
         transport.sendMessage(mimeMsg, mimeMsg.getRecipients(javax.mail.Message.RecipientType.TO));
         System.out.println("发送邮件成功！");
         transport.close();
     }
     catch(Exception e)
     {
         System.err.println("邮件发送失败！" + e.getMessage());
//         e.printStackTrace();
         return false;
     }
     return true;
}

    public static void main(String[] args) {
    // TODO 自动生成方法存根
     SendMail themail = new SendMail("smtp.gmail.com");
        String mailbody = "尊敬的" ;
            themail.setNeedAuth(true);
//邮件的title
            themail.setSubject("找回密码");
//邮件的内容
            themail.setBody(mailbody);
//发给谁
            themail.setTo("[e-mail]");
//从哪个邮件发与下面的setNamepass的需要一致
            themail.setFrom("[e-mail]");
            themail.setNamePass("[e-mail]","***");
            themail.sendout();
}
}

调用的方法(也就是邮件的验证)

package xueyuan.commons;

/**
* Created by IntelliJ IDEA.
* User: Administrator
* Date: 2009-2-15
* Time: 15:23:08
* To change this template use File | Settings | File Templates.
*/
import javax.mail.*;
import javax.mail.internet.*;

public class PopupAuthenticator extends Authenticator{
         String    username=null;
         String    password=null;

         public PopupAuthenticator(){}

         public PasswordAuthentication performCheck(String user,String pass){
                username = user;
                password = pass;
                return getPasswordAuthentication();
         }

         protected PasswordAuthentication getPasswordAuthentication() {
                return new PasswordAuthentication(username, password);
         }

}