java使用javax.mail包发送电子邮件:设置账号、密码、主题、文本、附件

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全栈工程师开发手册 (作者:栾鹏)

java教程全解

java使用javax.mail包发送电子邮件。这个实例可发送多附件。

这里使用163邮箱进行测试。可以设置账号、密码、主题、文本内容、附件

测试代码

public static void main(String[] args){      Mail sendmail = new Mail();      sendmail.setHost("smtp.163.com");      sendmail.setUserName("aaaaaaaaa@163.com");      sendmail.setPassWord("aaaaaaaaa");      sendmail.setTo("aaaaaaaaa@163.com");      sendmail.setFrom("aaaaaaaaa@163.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("aaaaaaaaa@163.com","aaaaaaaaa@163.com","smtp.163.com","aaaaaaaaa","aaaaaaaaa","你好","胃,你好吗?");      sendmail.attachfile("D:\\test.jpg");      sendmail.attachfile("D:\\test.mp4");      sendmail.sendMail();     }

邮件发送类的实现

package com.lp.app.net;import java.util.*;import java.io.*;import javax.mail.*;import javax.mail.internet.*;import javax.activation.*;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public Mail(){}//构造器,提供直接的参数传入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;}//设置邮件服务器地址public void setHost(String host){  this.host = host;}//设置登录服务器校验密码public void setPassWord(String pwd){  this.password = pwd;}//设置登录服务器校验用户public void setUserName(String usn){  this.username = usn;}//设置邮件发送目的邮箱public void setTo(String to){  this.to = to;}//设置邮件发送源邮箱public void setFrom(String from){  this.from = from;}//设置邮件主题public void setSubject(String subject){  this.subject = subject;}//设置邮件内容public void setContent(String content){  this.content = content;}//把主题转换为中文public String transferChinese(String strText){  try{    strText = MimeUtility.encodeText(new String(strText.getBytes(), "GB2312"), "GB2312", "B");  }catch(Exception e){    e.printStackTrace();  }  return strText;}//往附件组合中添加附件public void attachfile(String fname){  file.addElement(fname);}//发送邮件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; }}

本文只试验了163邮件,读者可以按下面的主机地址,试验其他邮箱。但并不是每种邮箱都能成功。

gmail(google.com)
POP3服务器地址:pop.gmail.com(SSL启用 端口:995)
SMTP服务器地址:smtp.gmail.com(SSL启用 端口:587)

21cn.com:
POP3服务器地址:pop.21cn.com(端口:110)
SMTP服务器地址:smtp.21cn.com(端口:25)

sina.com:
POP3服务器地址:pop3.sina.com.cn(端口:110)
SMTP服务器地址:smtp.sina.com.cn(端口:25)

tom.com:
POP3服务器地址:pop.tom.com(端口:110)
SMTP服务器地址:smtp.tom.com(端口:25)

163.com:
POP3服务器地址:pop.163.com(端口:110)
SMTP服务器地址:smtp.163.com(端口:25)

263.net:
POP3服务器地址:pop3.263.net(端口:110)
SMTP服务器地址:smtp.263.net(端口:25)

yahoo.com:
POP3服务器地址:pop.mail.yahoo.com
SMTP服务器地址:smtp.mail.yahoo.com

263.net.cn:
POP3服务器地址:pop.263.net.cn(端口:110)
SMTP服务器地址:smtp.263.net.cn(端口:25)

Foxmail:
POP3服务器地址:POP.foxmail.com(端口:110)
SMTP服务器地址:SMTP.foxmail.com(端口:25)

sinaVIP
POP3服务器:pop3.vip.sina.com (端口:110)
SMTP服务器:smtp.vip.sina.com (端口:25)

sohu.com:
POP3服务器地址:pop3.sohu.com(端口:110)
SMTP服务器地址:smtp.sohu.com(端口:25)

etang.com:
POP3服务器地址:pop.etang.com
SMTP服务器地址:smtp.etang.com

x263.net:
POP3服务器地址:pop.x263.net(端口:110)
SMTP服务器地址:smtp.x263.net(端口:25)

yahoo.com.cn:
POP3服务器地址:pop.mail.yahoo.com.cn(端口:995)
SMTP服务器地址:smtp.mail.yahoo.com.cn(端口:587)
雅虎邮箱POP3的SSL不启用端口为110,POP3的SSL启用端口995;SMTP的SSL不启用端口为25,SMTP的SSL启用端口为465

QQ邮箱 QQ企业邮箱
POP3服务器地址:pop.qq.com(端口:110) POP3服务器地址:pop.exmail.qq.com (SSL启用 端口:995)
SMTP服务器地址:smtp.qq.com (端口:25) SMTP服务器地址:smtp.exmail.qq.com(SSL启用 端口:587/465)
SMTP服务器需要身份验证

126邮箱 HotMail
POP3服务器地址:pop.126.com(端口:110) POP3服务器地址:pop.live.com (端口:995)
SMTP服务器地址:smtp.126.com(端口:25) SMTP服务器地址:smtp.live.com (端口:587)

china.com: 139邮箱
POP3服务器地址:pop.china.com(端口:110) POP3服务器地址:POP.139.com(端口:110)
SMTP服务器地址:smtp.china.com(端口:25) SMTP服务器地址:SMTP.139.com(端口:25)

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