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java邮件发送的实现

2019-11-26 13:43:13
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邮件是在日常生活中,这篇文章主要介绍了java实现基于SMTP发送邮件的方法,实例分析了java基于SMTP服务发送邮件的相关技巧,具有一定参考借鉴价值,需要的朋友可以参考下.

1.写一个 MailSendProper 类封装需要的属性

import java.util.Properties;public class MailSendProper {    private String Host ;          //发送邮件服务器的ip    private String Port ;          //发送邮件服务器的端口号    private String SendAddress ;      //邮件发送者的地址    private String ReceiveAddress ;     //邮件接受者的地址    private String username ;        //登录发送邮箱的用户名    private String password ;        //登录发送邮箱的密码    private boolean isvalidate = true ;   //是否需要身份验证    private String subject ;        //邮件标题    private String content ;       //邮件内容    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 getHost() {      return Host;    }    public void setHost(String host) {      Host = host;    }    public String getPort() {      return Port;    }    public void setPort(String port) {      Port = port;    }    public String getSendAddress() {      return SendAddress;    }    public void setSendAddress(String sendAddress) {      SendAddress = sendAddress;    }    public String getReceiveAddress() {      return ReceiveAddress;    }    public void setReceiveAddress(String receiveAddress) {      ReceiveAddress = receiveAddress;    }    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 boolean isIsvalidate() {      return isvalidate;    }    public void setIsvalidate(boolean isvalidate) {      this.isvalidate = isvalidate;    }    public Properties getProperties(){      Properties properties = new Properties() ;      properties.put("mail.smtp.host", this.Host) ;      properties.put("mail.smtp.port", this.Port) ;      properties.put("mail.smtp.auth", isvalidate?"true":"false") ;      return properties ;    }}

2、写一个  EmailMessage 封装 发送信息

public class EmailMessage {    private String title ;    private String context ;    private String toEmail ;    public EmailMessage() {      super();    }    public EmailMessage(String title, String context, String toEmail) {      super();      this.title = title;      this.context = context;      this.toEmail = toEmail;    }    public String getTitle() {      return title;    }    public void setTitle(String title) {      this.title = title;    }    public String getContext() {      return context;    }    public void setContext(String context) {      this.context = context;    }    public String getToEmail() {      return toEmail;    }    public void setToEmail(String toEmail) {      this.toEmail = toEmail;    }}

3、写一个 MailAttorney  邮箱密码验证器 类

import javax.mail.Authenticator;import javax.mail.PasswordAuthentication;public class MailAttorney extends Authenticator {  private String username ;  private String password ;  public MailAttorney(String username,String password) {    this.username = username ;    this.password = password ;  }  //覆盖父类方法,获取密码认证器  @Override  protected PasswordAuthentication getPasswordAuthentication() {    return new PasswordAuthentication(username,password) ;  }}

4 、 写一个 MailSend  邮件工具类

import java.util.Date;import javax.mail.Address;import javax.mail.Message;import javax.mail.Session;import javax.mail.Transport;import javax.mail.internet.InternetAddress;import javax.mail.internet.MimeMessage;import com.VTBBS.entity.EmailMessage;public class MailSend {    public static boolean mailTest(MailSendProper mailsender){        MailAttorney attorney = null ;        if(mailsender.isIsvalidate()){//判断是否需要身份认证          attorney = new MailAttorney(mailsender.getUsername(),mailsender.getPassword()) ;        }        //根据邮箱会话属性和密码验证器构造一个发送邮箱的seesion        Session session = Session.getInstance(mailsender.getProperties(),attorney) ;        //根据session创建一个邮件消息        Message mailMessage = new MimeMessage(session) ;        try {          //创建邮件发送者的地址          Address from = new InternetAddress(mailsender.getSendAddress()) ;          //设置邮箱消息的发送者          mailMessage.setFrom(from);          //创建邮件接收这的地址,并设置到邮件消息中          Address to = new InternetAddress(mailsender.getReceiveAddress()) ;          mailMessage.setRecipient(Message.RecipientType.TO, to);          mailMessage.setSubject(mailsender.getSubject()); //设置邮件标题          mailMessage.setSentDate(new Date()); //设置发送邮件时间          mailMessage.setText(mailsender.getContent()); //设置邮件内容          Transport.send(mailMessage);          return true ;        } catch (Exception e) {          e.printStackTrace();          return false ;        }    }    public static boolean sendEmail(EmailMessage message){        MailSendProper mail = new MailSendProper() ;        mail.setHost("smtp.126.com");          //smtp简单的邮件传输协议,默认端口号是25,        mail.setPort("25");        mail.setIsvalidate(true);              //需呀身份验证        mail.setUsername("");               //设置登录用户名         mail.setPassword("");               //设置发送者的密码        mail.setSendAddress("");             //设置发送这的地址 发送者地址和登录用户名是同一个        mail.setReceiveAddress(message.getToEmail());  //设置接收者的地址        mail.setSubject(message.getTitle());        //设置邮箱标题        mail.setContent(message.getContext());      //设置邮箱的内容        return mailTest(mail) ;    }}

注意:使用的邮箱必须开启POP3/SMTP服务 才能发送成功,不同的邮箱,邮箱的传输协议不一样如:

QQ邮箱:SMTP传输协议是 smtp.qq.com 端口 25

POP3传输协议是 pop3.qq.com  端口 110

5、使用方法测试

public static void main(String[] args) {  EmailMessage message = new EmailMessage() ;  String code = String.valueOf(Math.random()).substring(3, 9) ; //生成验证码  message.setTitle("邮箱验证");                  //邮件标题  message.setContext("尊敬的用户你好,你的验证码为"+code+"。"); //邮件内容  message.setToEmail("940202884@qq.com"); //要发送给谁  System.out.println(MailSend.sendEmail(message)?"发送成功":"发送失败") ;}

希望本文所述对大家学习java程序设计有所帮助。

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