Java程序发送邮件演示代码

首先要将activation.jar   mail.jar 两个jar包引入

如有不明之处或异常欢迎留言!

 

import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.UnsupportedEncodingException;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;

import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;

public class SendMail implements Runnable {
 
 private String to;   //接收方
   
 private String subject;  //标题
   
 private String content;  //邮件内容

 private Thread thread;  //定义线程
 
 private String sname;  //邮件署名

 private List attach;
 
 private String type = "text/html"; //or text/plain 发送邮件的格式
 
 private String smtpHost; //邮件服务器 smtp.163.com等
 private String emailFrom; //发送方邮箱
 private String fromPwd;  //密码

 

 //带模板的邮件
 public SendMail(String to, String subject, String content,String fileName) {
  try{
   if(to!=null && !"".equals(to)){
    thread = new Thread(this);
    this.to = to;
    this.subject = subject;
  
    attach = new ArrayList();
   
       //读取文件模板
   
    File file=new File(fileName);
    BufferedReader br = new BufferedReader(new FileReader(file));
    
    StringBuffer sb=new StringBuffer();
    while (br.ready()) {
     sb.append(br.readLine());
     sb.append("\r\n");
    } 
    //?换模块中的##content变量内容为content
    this.cOntent=sb.toString().replaceAll("##content",content);
   }
  }catch(Exception e){
   e.printStackTrace();
  }
  
  
 } 
 

 //带上署名和模块的邮件
 public SendMail(String sname,String to, String subject, String content,String fileName) {
  try{
   thread = new Thread(this);
   this.to = to;
   this.subject = subject;
   this.sname=sname;
   attach = new ArrayList();
   
   //读取文件模板
  
   File file=new File(fileName);
   BufferedReader br = new BufferedReader(new FileReader(file));
   StringBuffer sb=new StringBuffer();
   while (br.ready()) {
    sb.append(br.readLine());
   } 
   this.cOntent=sb.toString().replaceAll("##caicainet_content",content);
   
  }catch(Exception e){
   e.printStackTrace();
  }
  
  
 } 
 
 
 public SendMail(String sname,String to, String subject, String content,int typeId) {

  thread = new Thread(this);
  this.to = to;
  this.subject = subject;
  this.sname=sname;
  attach = new ArrayList();
  this.cOntent=content;
  this.type = "text/plain";
 } 
 
 
 public void run() {
  try {
   send();
  } catch (Exception e) {
   e.printStackTrace();
  }
 }

 
 public void start() {
  thread.start();
 }

 public boolean send() throws Exception {
  return send(to, subject, content);
 }

 private boolean send(String to, String subject, String content){
  boolean blnResult = false;
  InternetAddress[] address = null;
  //mailserver邮件服务器  Form 发送邮件的邮箱  pwd密码
  //此处三个参数可能通过数据库或.properties等方式来获取，方便后期的管理与设置
  String mailserver = "smtp.sina.com";
  String From = "";//发送方的邮箱
  String pwd = "";//密码
  
  if(smtpHost!=null && !"".equals(smtpHost))
   mailserver=smtpHost;
  if(emailFrom!=null && !"".equals(emailFrom))
   From=emailFrom;
  if(fromPwd!=null && !"".equals(fromPwd))
   pwd=fromPwd;
  
  if(smtpHost!=null && "nopass".equals(smtpHost))
  {
   smtpHost="";
   System.out.println("发送给"+to+"失败！原因是smtp地址不正确");
   return false;
  }
  
  
  
  String messageText = content;

  boolean sessiOnDebug= false;
  Date d1=new Date();
  try {
   // 设定所要用的Mail 服务器和所使用的传输协议
   java.util.Properties props = System.getProperties();
   props.put("mail.host", mailserver);
   props.put("mail.transport.protocol", "smtp");
   props.put("mail.smtp.auth", "true");//指定是否需要SMTP验证

   // 产生新的Session 服务
   javax.mail.Session mailSession = javax.mail.Session.getDefaultInstance(props, null);
   mailSession.setDebug(sessionDebug);
   Message msg = new MimeMessage(mailSession);
   if(sname!=null && !"".equals(sname))
   {
    // 设定发邮件的人
    msg.setFrom(new InternetAddress(From,sname));
   }
   else
   {
    //带署名的邮件
    msg.setFrom(new InternetAddress(From,"刘海洋"));
   }
   
   if(sname!=null && "mail".equals(sname))
   {
    msg.setFrom(new InternetAddress(From,""));
   }
   
   // 设定收信人的信箱
   address = InternetAddress.parse(to, false);
   msg.setRecipients(Message.RecipientType.TO, address);

   // 设定信中的主题 
   msg.setSubject(subject);

   // 设定送信的时间
   msg.setSentDate(new Date());

   if("text/html".equals(this.type))
   {
        msg.setContent(messageText, type + ";charset=GB2312");
   }
   else
   {
    msg.setText(messageText);
   }
   
   Transport transport = mailSession.getTransport("smtp");

   transport.connect(mailserver, From, pwd);
   transport.sendMessage(msg, msg.getAllRecipients());
   transport.close();
   Date d2=new Date();
   System.out.println("发送给"+to+"成功！耗时"+(d2.getTime()-d1.getTime())+"毫秒,发送方："+From);
   blnResult=true;
   
  } catch (MessagingException mex) {
   mex.printStackTrace();
   blnResult=false;
  } catch (UnsupportedEncodingException e) {
   e.printStackTrace();
  }
  
  return blnResult;
 }
  public void setTo(String to) {
  this.to = to;
 }

 public String getTo() {
  return this.to;
 }

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

 public String getSubject() {
  return this.subject;
 }

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

 public String getContent() {
  return this.content;
 }

 public void addAttach(String file) {
  attach.add(file);
 }

 public boolean isAttach() {
  return attach != null && attach.size() > 0;
 }
 
 public static void main(String[] args) {
  try {
   //普通的文字邮件
  SendMail sendMail=new SendMail("王大河","**@163.com", "试试", "没时间那",1);
  sendMail.start();
   
   
   //带模版的邮件
   String path = "D:/project/tongji/WebRoot/template/email.html"; //获取存放路径 
   
   String chtml="";
   SendMail sendMail=new SendMail("**@163.com,"上哪去？！",chtml,path);
   sendMail.start();
  } catch (Exception e) {
   e.printStackTrace();
  }
 }

}