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  • Java发送邮件

    /**  
     * <p>Title: 使用javamail发送邮件</p>  
     * <p>Description: 演示如何使用javamail包发送电子邮件。这个实例可发送多附件</p>  
     * <p>Copyright: Copyright (c) 2003</p>  
     * <p>Filename: Mail.java</p>  
     * @author 杜江  
     * @version 1.0  
     */ 
    public class Mail {  
     
    String to = "";//收件人  
    String from = "";//发件人  
    String host = "";//smtp主机  
    String username = "" ;  
    String password = "" ;  
    String filename = "";//附件文件名  
    String subject = "";//邮件主题  
    String content = "";//邮件正文  
    Vector file = new Vector();//附件文件集合  
    /**  
     *<br>方法说明:默认构造器  
     *<br>输入参数:  
     *<br>返回类型:  
     */ 
    public Mail(){  
    }  
    /**  
     *<br>方法说明:构造器,提供直接的参数传入  
     *<br>输入参数:  
     *<br>返回类型:  
     */ 
    public Mail(String to,String from,String smtpServer,String username,String password,String subject,String content){  
      this.to = to;  
      this.from = from;  
      this.host = smtpServer;  
      this.username = username;  
      this.password = password;  
      this.subject = subject;  
      this.content = content;  
    }  
    /**  
     *<br>方法说明:设置邮件服务器地址  
     *<br>输入参数:String host 邮件服务器地址名称  
     *<br>返回类型:  
     */ 
    public void setHost(String host){  
      this.host = host;  
    }  
    /**  
     *<br>方法说明:设置登录服务器校验密码  
     *<br>输入参数:  
     *<br>返回类型:  
     */ 
    public void setPassWord(String pwd){  
      this.password = pwd;  
    }  
    /**  
     *<br>方法说明:设置登录服务器校验用户  
     *<br>输入参数:  
     *<br>返回类型:  
     */ 
    public void setUserName(String usn){  
      this.username = usn;  
    }  
    /**  
     *<br>方法说明:设置邮件发送目的邮箱  
     *<br>输入参数:  
     *<br>返回类型:  
     */ 
    public void setTo(String to){  
      this.to = to;  
    }  
    /**  
     *<br>方法说明:设置邮件发送源邮箱  
     *<br>输入参数:  
     *<br>返回类型:  
     */ 
    public void setFrom(String from){  
      this.from = from;  
    }  
    /**  
     *<br>方法说明:设置邮件主题  
     *<br>输入参数:  
     *<br>返回类型:  
     */ 
    public void setSubject(String subject){  
      this.subject = subject;  
    }  
    /**  
     *<br>方法说明:设置邮件内容  
     *<br>输入参数:  
     *<br>返回类型:  
     */ 
    public void setContent(String content){  
      this.content = content;  
    }  
    /**  
     *<br>方法说明:把主题转换为中文  
     *<br>输入参数:String strText   
     *<br>返回类型:  
     */ 
    public String transferChinese(String strText){  
      try{  
        strText = MimeUtility.encodeText(new String(strText.getBytes(), "GB2312"), "GB2312", "B");  
      }catch(Exception e){  
        e.printStackTrace();  
      }  
      return strText;  
    }  
    /**  
     *<br>方法说明:往附件组合中添加附件  
     *<br>输入参数:  
     *<br>返回类型:  
     */ 
    public void attachfile(String fname){  
      file.addElement(fname);  
    }  
    /**  
     *<br>方法说明:发送邮件  
     *<br>输入参数:  
     *<br>返回类型:boolean 成功为true,反之为false  
     */ 
    public boolean sendMail(){  
     
      //构造mail session  
      Properties props = System.getProperties();  
      props.put("mail.smtp.host",host);  
      props.put("mail.smtp.auth","true");  
      Session session=Session.getDefaultInstance(props, new Authenticator(){  
       public PasswordAuthentication getPasswordAuthentication(){  
        return new PasswordAuthentication(username,password);   
       }  
      });  
        
      try {  
        //构造MimeMessage 并设定基本的值  
        MimeMessage msg = new MimeMessage(session);  
        msg.setFrom(new InternetAddress(from));  
        InternetAddress[] address={new InternetAddress(to)};  
        msg.setRecipients(Message.RecipientType.TO,address);  
        subject = transferChinese(subject);  
        msg.setSubject(subject);  
          
        //构造Multipart  
        Multipart mp = new MimeMultipart();  
          
        //向Multipart添加正文  
        MimeBodyPart mbpContent = new MimeBodyPart();  
        mbpContent.setText(content);  
        //向MimeMessage添加(Multipart代表正文)  
        mp.addBodyPart(mbpContent);  
          
        //向Multipart添加附件  
        Enumeration 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(fds.getName());  
          //向MimeMessage添加(Multipart代表附件)  
          mp.addBodyPart(mbpFile);  
     
        }  
          
        file.removeAllElements();  
        //向Multipart添加MimeMessage  
        msg.setContent(mp);  
        msg.setSentDate(new Date());  
        //发送邮件  
        Transport.send(msg);  
        
      } catch (MessagingException mex) {  
        mex.printStackTrace();  
        Exception ex = null;  
        if ((ex=mex.getNextException())!=null){  
          ex.printStackTrace();  
        }  
        return false;  
      }  
      return true;  
     }  
    /**  
     *<br>方法说明:主方法,用于测试  
     *<br>输入参数:  
     *<br>返回类型:  
     */ 
     public static void main(String[] args){  
      Mail sendmail = new Mail();  
      sendmail.setHost("smtp.126.com");  
      sendmail.setUserName("umgsai");  
      sendmail.setPassWord("********");//*代表你的密码  
      sendmail.setTo("445013022@qq.com");  
      sendmail.setFrom("umgsai@126.com");  
      sendmail.setSubject("你好,这是测试!");  
      sendmail.setContent("你好这是一个带多附件的测试!");      
      //Mail sendmail = new Mail("dujiang@sricnet.com","du_jiang@sohu.com","smtp.sohu.com","du_jiang","31415926","你好","胃,你好吗?");  
      sendmail.attachfile("c:\test.txt");  
      //sendmail.attachfile("DND.jar");  
      sendmail.sendMail();  
     
     }  
    }//end  
     
    //需要加入两个Jar文件,并且保证你所在的网络的25号端口没有被封锁。
    
    //本文出自 “阿凡达” 博客,请务必保留此出处http://shamrock.blog.51cto.com/2079212/832235
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  • 原文地址:https://www.cnblogs.com/umgsai/p/3908148.html
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