JAVAMAIL发送邮件实例

1.定义一个发送邮件的BEAN类

package com.service;

import java.util.Vector;

public class MailBean {
 private String to;                                // 收件人
    private String from;                            // 发件人
    private String host;                            // SMTP主机
    private String username;                        // 发件人的用户名
    private String password;                        // 发件人的密码
    private String subject;                            // 邮件主题
    private String content;                            // 邮件正文
    Vector<String> file;                            // 多个附件
    private String filename;                        // 附件的文件名
   
    public String getTo() {
        return to;
    }

    public void setTo(String to) {
        this.to = to;
    }

    public String getFrom() {
        return from;
    }

    public void setFrom(String from) {
        this.from = from;
    }

    public String getHost() {
        return host;
    }

    public void setHost(String host) {
        this.host = host;
    }

    public String getUsername() {
        return username;
    }

    public void setUsername(String username) {
        this.username = username;
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }

    public String getSubject() {
        return subject;
    }

    public void setSubject(String subject) {
        this.subject = subject;
    }

    public String getContent() {
        return content;
    }

    public void setContent(String content) {
        this.content = content;
    }

    public String getFilename() {
        return filename;
    }

    public void setFilename(String filename) {
        this.filename = filename;
    }

    public Vector<String> getFile(){
        return file;
    }
    //该方法是用于上传附件用
    public void attachFile(String fileName) {
        if(file == null)
            file = new Vector<String>();
        file.addElement(fileName);
    }

 

}

2.定义发送邮件的服务类
package com.service;

import java.util.Date;
import java.util.Enumeration;
import java.util.Properties;
import java.util.Vector;

import javax.activation.DataHandler;
import javax.activation.FileDataSource;
import javax.mail.Authenticator;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Multipart;
import javax.mail.PasswordAuthentication;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeBodyPart;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeMultipart;
import javax.mail.internet.MimeUtility;

public class SendMail {

  public String toChinese(String text) {
         try {
             text = MimeUtility.encodeText(new String(text.getBytes(), "GB2312"), "GB2312", "B");
         } catch (Exception e) {
             e.printStackTrace();
         }
         return text;
     }

     public boolean sendMail(MailBean mb) {
         String host = mb.getHost();
         final String username = mb.getUsername();
         final String password = mb.getPassword();
         String from = mb.getFrom();
         String to = mb.getTo();
         String subject = mb.getSubject();
         String content = mb.getContent();
         String fileName = mb.getFilename();
         Vector<String> file = mb.getFile();
        
        
         Properties props = System.getProperties();
         props.put("mail.smtp.host", host);                // 设置SMTP的主机
         props.put("mail.smtp.auth", "true");            // 需要经过验证
        
         Session session = Session.getInstance(props, new Authenticator() {
             public PasswordAuthentication getPasswordAuthentication() {
                 return new PasswordAuthentication(username, password);
             }
         });

         try {
             MimeMessage msg = new MimeMessage(session);
             msg.setFrom(new InternetAddress(from));
             InternetAddress[] address = {new InternetAddress(to)};
             msg.setRecipients(Message.RecipientType.TO, address);
             msg.setSubject(toChinese(subject));

             Multipart mp = new MimeMultipart();
             MimeBodyPart mbpContent = new MimeBodyPart();
             mbpContent.setText(content);
             mp.addBodyPart(mbpContent);

             /**//*    往邮件中添加附件    */
             Enumeration<String> efile = file.elements();
             while (efile.hasMoreElements()) {
                 MimeBodyPart mbpFile = new MimeBodyPart();
                 fileName = efile.nextElement().toString();
                 FileDataSource fds = new FileDataSource(fileName);
                 mbpFile.setDataHandler(new DataHandler(fds));
                 mbpFile.setFileName(toChinese(fds.getName()));
                 mp.addBodyPart(mbpFile);
             }

             msg.setContent(mp);
             msg.setSentDate(new Date());
             Transport.send(msg);
            
         } catch (MessagingException me) {
             me.printStackTrace();
             return false;
         }
         return true;
     }

 
}
3、测试类

package com.service;

import java.util.Properties;

public class Test
{
    // 邮箱服务器
   
    public Test()
    {
    }

    /** *//**
     * 此段代码用来发送普通电子邮件
     */
  

    public static void main(String[] args)
    {
     try {
       MailBean mb = new MailBean();
             mb.setHost("smtp.163.com");                        // 设置SMTP主机(163)，若用126，则设为：smtp.126.com
             mb.setUsername("usertest");                // 设置发件人邮箱的用户名
             mb.setPassword("passwordtest");                        // 设置发件人邮箱的密码，需将*号改成正确的密码
             mb.setFrom("[email protected]");            // 设置发件人的邮箱
             mb.setTo("[email protected]");                // 设置收件人的邮箱
             mb.setSubject("测试_JavaMail");                    // 设置邮件的主题
             mb.setContent("本邮件中包含1个附件，请检查！");        // 设置邮件的正文

          // 往邮件中添加附件
             mb.attachFile("E://test.txt");
                      
             SendMail sm = new SendMail();
             System.out.println("正在发送邮件...");
            
             if(sm.sendMail(mb))                                // 发送邮件
                 System.out.println("发送成功!");
             else
                 System.out.println("发送失败!");
        

     
  } catch (Exception e) {
   e.printStackTrace();
  }
     
    }

}