邮件的发送

/*
* 发邮件
* 准备配置文件！
*/
// 获取配置文件内容
Properties props = new Properties();
props.load(this.getClass().getClassLoader()
.getResourceAsStream("email_template.properties"));
String host = props.getProperty("host");//获取服务器主机
String uname = props.getProperty("uname");//获取用户名
String pwd = props.getProperty("pwd");//获取密码
String from = props.getProperty("from");//获取发件人
String to = form.getEmail();//获取收件人
String subject = props.getProperty("subject");//获取主题
String content = props.getProperty("content");//获取邮件内容

content = MessageFormat.format(content, form.getCode());//替换{0}

Session session = MailUtils.createSession(host, uname, pwd);//得到session
Mail mail = new Mail(from, to, subject, content);//创建邮件对象
try {
MailUtils.send(session, mail);//发邮件！
} catch (MessagingException e) {
}

package cn.itcast.mail;

import java.io.IOException;
import java.util.List;
import java.util.Properties;

import javax.mail.Authenticator;
import javax.mail.Message.RecipientType;
import javax.mail.MessagingException;
import javax.mail.PasswordAuthentication;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeBodyPart;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeMultipart;
import javax.mail.internet.MimeUtility;

/**
*
* @author itcast 本类只有这么一个方法，用来发邮件！
*/
public class MailUtils {
public static Session createSession(String host, final String username, final String password) {
Properties prop = new Properties();
prop.setProperty("mail.host", host);// 指定主机
prop.setProperty("mail.smtp.auth", "true");// 指定验证为true

// 创建验证器
Authenticator auth = new Authenticator() {
public PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication(username, password);
}
};

// 获取session对象
return Session.getInstance(prop, auth);
}

/**
* 发送指定的邮件
*
* @param mail
*/
public static void send(Session session, final Mail mail) throws MessagingException,
IOException {

MimeMessage msg = new MimeMessage(session);// 创建邮件对象
msg.setFrom(new InternetAddress(mail.getFrom()));// 设置发件人
msg.addRecipients(RecipientType.TO, mail.getToAddress());// 设置收件人

// 设置抄送
String cc = mail.getCcAddress();
if (!cc.isEmpty()) {
msg.addRecipients(RecipientType.CC, cc);
}

// 设置暗送
String bcc = mail.getBccAddress();
if (!bcc.isEmpty()) {
msg.addRecipients(RecipientType.BCC, bcc);
}

msg.setSubject(mail.getSubject());// 设置主题

MimeMultipart parts = new MimeMultipart();// 创建部件集对象

MimeBodyPart part = new MimeBodyPart();// 创建一个部件
part.setContent(mail.getContent(), "text/html;charset=utf-8");// 设置邮件文本内容
parts.addBodyPart(part);// 把部件添加到部件集中

///////////////////////////////////////////

// 添加附件
List<AttachBean> attachBeanList = mail.getAttachs();// 获取所有附件
if (attachBeanList != null) {
for (AttachBean attach : attachBeanList) {
MimeBodyPart attachPart = new MimeBodyPart();// 创建一个部件
attachPart.attachFile(attach.getFile());// 设置附件文件
attachPart.setFileName(MimeUtility.encodeText(attach
.getFileName()));// 设置附件文件名
String cid = attach.getCid();
if(cid != null) {
attachPart.setContentID(cid);
}
parts.addBodyPart(attachPart);
}
}

msg.setContent(parts);// 给邮件设置内容
Transport.send(msg);// 发邮件
}
}