求java发邮件代码，要能用哦

Question

求java发邮件代码，要能用哦谢过啦

Answer 1

网上好多例子呀。比如http://www.tutorialspoint.com/java/java_sending_email.htm

Answer 2

邮件系统很简单哦，只有下面两个类： 
MailBean 和 SendMailOnTime 
需要jar组件： 
activation.jar 
mail.jar 
log4j.jar 代码如下： /*   * Created on 2005-9-7   *   * TODO To change the template for this generated file go to   * Window - Preferences - Java - Code Style - Code Templates   *   * Update on 2008-8-14   */ package javaMail;   import javax.mail.MessagingException; import javax.mail.Session; import javax.mail.Transport; import javax.mail.internet.InternetAddress; import javax.mail.internet.MimeMessage;   import org.apache.log4j.Logger;       /**   * @author panshengti 类功能 : 处理意见反馈邮件发送 调用 jar:activation.jar 、 mail.jar   */   public class MailBean {         public static Logger log = null ;     static {        log = Logger.getLogger (MailBean. class );     }         // smtpHost 发件人所用到的 smtp 服务器     String smtpHost = "smtp.163.com" ;     // from 发件人邮箱     String from = "[email protected]" ;     // to 收件人邮箱     String to = "[email protected]" ;     // subject 邮件标题     String subject = "receive a mail from [email protected]" ;     // theMessage 邮件内容     StringBuffer theMessage = new StringBuffer();       /**       * 固定的给 [email protected] ,[email protected] 发送邮件       * create date:2008- 8- 15       * author:Administrator       *       * @param smtpHost       * @param from       * @param subject       * @param messageText       * @throws MessagingException       */     public void sendMessage(String smtpHost, String from,            String subject, String messageText) throws MessagingException {        SmtpAuth sa = new SmtpAuth();        sa.getuserinfo( "d-ear" , "123abc" );        java.util.Properties props = new java.util.Properties();        props.put( "mail.smtp.auth" , "true" );        props.put( "mail.smtp.host" , smtpHost);        System. out .println( "Constructing message- from=" + from + " to=" + to );        InternetAddress fromAddress = new InternetAddress(from);        InternetAddress[] toAddresss = new InternetAddress[2];        toAddresss[0] = new InternetAddress( "[email protected]" );        toAddresss[1] = new InternetAddress( "[email protected]" );        int i = 0;        while (i < toAddresss. length ) {            Session mailSession = Session.getDefaultInstance (props, sa);            MimeMessage testMessage = new MimeMessage(mailSession);            testMessage.setFrom(fromAddress);            testMessage.addRecipient(javax.mail.Message.RecipientType. TO ,                   toAddresss[i]);            testMessage.setSentDate( new java.util.Date());            testMessage.setSubject(subject);            testMessage.setText(messageText);              Transport.send (testMessage);            System. out .println( "A mail have been sent!" );            i++;        }     }       /*       * 由 163 服务器向目的邮箱发送邮件       * 邮件发送处理 @param stmHost,from,to,subject,messageText       */       public void sendMessage(String smtpHost, String from, String to,            String subject, String messageText) throws MessagingException {        SmtpAuth sa = new SmtpAuth();        sa.getuserinfo( "d-ear" , "123abc" );        java.util.Properties props = new java.util.Properties();        props.put( "mail.smtp.auth" , "true" );        props.put( "mail.smtp.host" , smtpHost);        System. out .println( "Constructing message- from=" + from + " to=" + to);        InternetAddress fromAddress = new InternetAddress(from);        InternetAddress toAddresss = new InternetAddress(to);                          Session mailSession = Session.getDefaultInstance (props, sa);            MimeMessage testMessage = new MimeMessage(mailSession);            testMessage.setFrom(fromAddress);            testMessage.addRecipient(javax.mail.Message.RecipientType. TO ,                   toAddresss);            testMessage.setSentDate( new java.util.Date());            testMessage.setSubject(subject);            testMessage.setText(messageText);              Transport.send (testMessage);            System. out .println( "A mail have been sent to " + to);                }       /**       * 功能：群发功能 , 把所有的目的邮箱作为一个数组参数传入       * create date:2008- 8- 15       * author:Administrator       *       * @param smtpHost       * @param from       * @param to 目的邮箱数组       * @param subject       * @param messageText       * @throws MessagingException       */     public void sendMessage(String smtpHost, String from, String[] to,            String subject, String messageText) throws MessagingException {        SmtpAuth sa = new SmtpAuth();        sa.getuserinfo( "d-ear" , "123abc" );        java.util.Properties props = new java.util.Properties();        props.put( "mail.smtp.auth" , "true" );        props.put( "mail.smtp.host" , smtpHost);        System. out .println( "Constructing message- from=" + from + " to=" + to);        InternetAddress fromAddress = new InternetAddress(from);               InternetAddress[] toAddresss = new InternetAddress[to. length ];        for ( int len=0;len<to. length ;len++){            toAddresss[0] = new InternetAddress(to[len]);        }               int i = 0;        while (i < toAddresss. length ) {            Session mailSession = Session.getDefaultInstance (props, sa);            MimeMessage testMessage = new MimeMessage(mailSession);            testMessage.setFrom(fromAddress);            testMessage.addRecipient(javax.mail.Message.RecipientType. TO ,                   toAddresss[i]);            testMessage.setSentDate( new java.util.Date());            testMessage.setSubject(subject);            testMessage.setText(messageText);              Transport.send (testMessage);            System. out .println( "A mail have been sent to " +to[i]);            i++;        }     }     /*       * 邮件用户名和密码认证       */     static class SmtpAuth extends javax.mail.Authenticator {        private String user , password ;          public void getuserinfo(String getuser, String getpassword) {            user = getuser;            password = getpassword;        }          protected javax.mail.PasswordAuthentication getPasswordAuthentication() {            return new javax.mail.PasswordAuthentication( user , password );        }     }   }     package javaMail;   import javax.mail.MessagingException;   import org.apache.log4j.Logger;   public class SendMailOnTime {       public static Logger log = null ;     static {        log = Logger.getLogger (SendMailOnTime. class );     }       /**       * @param args       */     public static void sendMail(String str) {          MailBean mail = new MailBean();        try {            mail.sendMessage( "smtp.163.com" , "[email protected]" ,                   "rent information" , str);        } catch (MessagingException e) {            System. out .println( "mail send error !" );            log .debug( "mail send error !" + e.getMessage());            e.printStackTrace();        }        System. out .println( "Mail have been sended ." );     }       /**       * 给一个指定邮箱发送指定的邮件内容 create date:2008- 8- 15 author:Administrator       *       * @param str       */     public static void sendMail(String toMail, String content) {          MailBean mail = new MailBean();        try {            mail.sendMessage( "smtp.163.com" , "[email protected]" , toMail,                   "spider information" , content);        } catch (MessagingException e) {            System. out .println( "mail send error !" );            log .debug( "mail send error !" + e.getMessage());            e.printStackTrace();        }        System. out .println( "Mail have been sended ." );     }       /**       * 指定目的邮箱数组进行群发 create date:2008- 8- 15 author:Administrator       *       * @param toMail       * @param content       */     public static void sendMail(String[] toMail, String content) {          MailBean mail = new MailBean();        try {            mail.sendMessage( "smtp.163.com" , "[email protected]" , toMail,                   "spider information" , content);        } catch (MessagingException e) {            System. out .println( "mail send error !" );            log .debug( "mail send error !" + e.getMessage());            e.printStackTrace();        }        System. out .println( "Mail have been sended ." );     }   } 

Answer 3

还有一个 注释的 学习有帮助import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import java.util.Date;
import javax.mail.Message.RecipientType;
import javax.mail.internet.MimeMessage;
import javax.mail.Message;
import javax.mail.Session;
import java.util.Properties;
import javax.mail.MessagingException;
import javax.mail.internet.MimeBodyPart;
import javax.mail.Multipart;
import javax.mail.internet.MimeMultipart;
import org.apache.log4j.Logger;
/** *//** *//** *//**
 * 发送Email类
 */public class SendEmail {
  Logger logger=Logger.getLogger(this.getClass());
  /** *//** *//** *//**
   * Email发送方法
   * @param toemails 需要一个字符串参数，用来设置收件人地址，如果收件人为多个，则用","隔开
   * @param content 邮件内容
   * @param subject 邮件主题
   * @return 邮件成功发送则返回true,否则返回false
   */
  public boolean sendSimpleEmail(String toemails,String content,String subject){
    boolean result=false;
    logger.info("进入发送Email类");
      try {
        //创建属性对象
        Properties props = new Properties();
        //设置邮件传输协议为：smtp
        props.put("mail.transpost.protocol","smtp");
        //设置邮件服务器地址
        props.put("mail.smtp.host", "smtp.163.com");
        //设置邮件验证为真
        props.put("mail.smtp.auth", "true");
        //设置邮件服务器端口
        props.put("mail.smtp.port","25");        //调用验证类进行验证,需要参数发件人用户名和密码
        logger.info("验证类实例化==============");
        CheckSendEmail auth=new CheckSendEmail("lip009","lip009");        logger.info("验证通过");
        //创建session对象
        Session sendMailSession;
        sendMailSession = Session.getInstance(props, auth);
        //设置输出调试信息
        sendMailSession.setDebug(true);        logger.info("开始创建消息对象");
        //创建信息对象
        Message newMessage = new MimeMessage(sendMailSession);        //输入发送信息
        //设置发信人地址
        logger.info("设置发信人地址");
        newMessage.setFrom(new InternetAddress("[email protected]"));        //设置收信人地址，只支持单用户发送
//        newMessage.setRecipient(Message.RecipientType.TO,new InternetAddress([email protected]));        //设置收信人地址，可以支持多用户发送
        logger.info("设置收信人地址");
        newMessage.setRecipients(Message.RecipientType.TO,
                                InternetAddress.parse(toemails));
       //附件
//==============================================================================
       //msgText是信件的正文，共有两行
//       String msgText = content;       //msgAttachment是一段字符串作为附件内容
//       String msgAttachment = "This is an attachment string!";//       MimeBodyPart mbp1 = new MimeBodyPart();//       mbp1.setText(msgText); //把前面定义的msgText中的文字设定为邮件正文的内容       //创建附件部分
//       MimeBodyPart mbp2 = new MimeBodyPart();       //使用setText(text, charset)来加入附件
//       mbp2.setText(msgAttachment, "gb2312");       //创建Multipart
//       Multipart mp = new MimeMultipart();//       mp.addBodyPart(mbp1);
//       mp.addBodyPart(mbp2);       // 添加 Multipart到Message中
//       newMessage.setContent(mp);
//==============================================================================
        //设置信件文本格式（当设置了附件，这里就不能有）
        logger.info("设置格式");
        newMessage.setContent("SendMail", "text/html");        //设置信件主题
        logger.info("设置主题");
        newMessage.setSubject(subject);        //设置信件发送日期
        logger.info("设置发送日期");
        newMessage.setSentDate(new Date());        //设置信件正文（当设置了附件，这里就不能有）
        newMessage.setText(content);
        logger.info("设置完消息");
        //创建对象
        Transport transport;
        transport = sendMailSession.getTransport("smtp");
        logger.info("将要发送");        //发送
        result=true;
        transport.send(newMessage);//此处总是抛出异常，让人很是郁闷，但是邮件却发送成功！
        logger.info("恭喜你！您的邮件已经成功发送！");
      }
      catch (MessagingException ex) {
//        ex.printStackTrace();
      }
      return result;
  }
}

Answer 4

http://blog.csdn.net/peihexian/archive/2006/12/25/1460473.aspx

Answer 5

import java.util.Properties;   
import javax.activation.DataHandler;   
import javax.activation.DataSource;   
import javax.activation.FileDataSource;   
import javax.mail.Message;   
import javax.mail.MessagingException;   
import javax.mail.Session;   
import javax.mail.Transport;   
import javax.mail.URLName;   
import javax.mail.internet.AddressException;   
import javax.mail.internet.InternetAddress;   
import javax.mail.internet.MimeBodyPart;   
import javax.mail.internet.MimeMessage;   
import javax.mail.internet.MimeMultipart;   
  
public class SendMail {   
    public SendMail() {   
    }   
    public static void main(String[] args) {   
        // 初始化信息   
        String sender = "[email protected]"; //发件人
        String password = "xxxxxx";              
        String smtpServer = "smtp.163.com";   
        String recipient = "[email protected]"; //收件人  
        String subject = "测试邮件主题";   
        String content = "测试邮件内容";   
        String fileAttachment = "";   //附件   
        
        // 配置服务器属性   
        Properties proper = new Properties();   
        proper.put("mail.smtp.host", smtpServer); // smtp服务器   
        proper.put("mail.smtp.auth", "true"); // 是否smtp认证   
        proper.put("mail.smtp.port", "25"); // 设置smtp端口   
        proper.put("mail.transport.protocol", "smtp"); // 发邮件协议   
        proper.put("mail.store.protocol", "pop3"); // 收邮件协议   
        // 配置邮件接收地址   
        InternetAddress[] receiveAddress = new InternetAddress[1];   
        try {   
            receiveAddress[0] = new InternetAddress(recipient);   
        } catch (AddressException e) {   
            e.printStackTrace();   
        }   
        // smtp认证，获取Session   
        SmtpAuth sa = new SmtpAuth();   
        sa.setUserinfo(sender, password);   
        Session session = Session.getInstance(proper, sa);   
        session.setPasswordAuthentication(new URLName(smtpServer), sa.getPasswordAuthentication());   
        // 构建邮件体   
        MimeMessage sendMess = new MimeMessage(session);   
        MimeBodyPart mbp = new MimeBodyPart();   
        MimeMultipart mmp = new MimeMultipart();   
        try {   
            // 邮件文本内容   
            mbp.setContent(content, "text/plain; charset=GBK");   
            mmp.addBodyPart(mbp);   
            // 附件处理   
            if(fileAttachment!=null&&fileAttachment!=""){   
                DataSource source = new FileDataSource(fileAttachment);   
                String name = source.getName();   
                mbp = new MimeBodyPart();   
                mbp.setDataHandler(new DataHandler(source));   
                mbp.setFileName(name);   
                mmp.addBodyPart(mbp);   
            }   
            // 邮件整体   
            sendMess.setSubject(subject);   
            sendMess.setContent(mmp);   
            // 发送邮件   
            sendMess.setFrom(new InternetAddress(sender));   
            sendMess.setRecipients(Message.RecipientType.TO, receiveAddress);   
            Transport.send(sendMess);   
            System.out.println("发送成功");   
        } catch (MessagingException ex) {   
            ex.printStackTrace();   
        }   
    }   
}  javax.mail.AuthenticationFailedException: failed to connect
at javax.mail.Service.connect(Service.java:322)
at javax.mail.Service.connect(Service.java:172)
at javax.mail.Service.connect(Service.java:121)
at javax.mail.Transport.send0(Transport.java:190)
at javax.mail.Transport.send(Transport.java:120)
at mail7.SendMail.main(SendMail.java:79)
用户名和密码都对

Answer 6

你的邮箱是否打开了POP/SMTP!!! 

Answer 7

有用 spring 里面的mail包做的例子，在内网里面可以发。外网没有试过。