java 发送邮件 E_mail

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要引用的jar包：

mail.jar

========================================

配置文件：

mail.properties:

#
# General Email Configuration
#
apm.mail.smtp.host=smtp.163.com
apm.mail.smtp.port=25
# username
apm.mail.username=testusername
#userpass
apm.mail.logpass=123456

=======================================

采用多线程的方式，进行发送邮件：

SendMail.java：

import java.io.UnsupportedEncodingException;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.Properties;

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

import com.test.util.PropertiesUtil;

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;//附件

   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

   public SendMail(String to, String subject, String content) {

       this.to = to;
       this.subject = subject;
       //attach = new ArrayList();
       this.content = content;
       this.type = "text/plain";

       thread = new Thread(this);
       thread.start();
   }

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

   @SuppressWarnings("static-access")
   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

       //读取配置文件
       PropertiesUtil mPropertiesUnit = new PropertiesUtil();
       Properties mProperties = mPropertiesUnit
               .getProperties("mail.properties");

       String mailserver = mProperties.getProperty("apm.mail.smtp.host");
       String From = mProperties.getProperty("apm.mail.username");;// 发送方的邮箱
       String pwd = mProperties.getProperty("apm.mail.logpass");;// 密码

       From = From + "@"+ mailserver.substring(5);

       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, "测试邮件发送"));
           }

           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("test@qq.com", "测试主题",
                   "这是邮件内容哦~~~");
           //sendMail.start();
           System.out.println("testing>>>>>>.........");


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

   @Override
   public void run() {
       try {
           send();
       } catch (Exception e) {
           e.printStackTrace();
       }
   }

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

}