使用JavaMail发送邮件

package com.hafiz.zhang.mail;

import java.util.Properties;

import javax.activation.DataHandler;
import javax.activation.FileDataSource;
import javax.mail.Address;
import javax.mail.BodyPart;
import javax.mail.Message;
import javax.mail.Multipart;
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;

public class Mail {

private MimeMessage mimeMsg; //MIME邮件对象
private Session session; //邮件会话对象
private Properties props; //系统属性
private boolean needAuth = false; //smtp是否需要认证
//smtp认证用户名和密码
private String username;
private String password;
private Multipart mp; //Multipart对象,邮件内容,标题,附件等内容均添加到其中后再生成MimeMessage对象

/**
* Constructor
* @param smtp 邮件发送服务器
*/
public Mail(String smtp){
setSmtpHost(smtp);
createMimeMessage();
}

/**
* 设置邮件发送服务器
* @param hostName String
*/
public void setSmtpHost(String hostName) {
System.out.println("设置系统属性：mail.smtp.host = "+hostName);
if(props == null)
props = System.getProperties(); //获得系统属性对象
props.put("mail.smtp.host",hostName); //设置SMTP主机
}

/**
* 创建MIME邮件对象
* @return
*/
public boolean createMimeMessage()
{
try {
System.out.println("准备获取邮件会话对象！");
session = Session.getDefaultInstance(props,null); //获得邮件会话对象
}
catch(Exception e){
System.err.println("获取邮件会话对象时发生错误！"+e);
return false;
}

System.out.println("准备创建MIME邮件对象！");
try {
mimeMsg = new MimeMessage(session); //创建MIME邮件对象
mp = new MimeMultipart();

return true;
} catch(Exception e){
System.err.println("创建MIME邮件对象失败！"+e);
return false;
}
}

/**
* 设置SMTP是否需要验证
* @param need
*/
public void setNeedAuth(boolean need) {
System.out.println("设置smtp身份认证：mail.smtp.auth = "+need);
if(props == null) props = System.getProperties();
if(need){
props.put("mail.smtp.auth","true");
}else{
props.put("mail.smtp.auth","false");
}
}

/**
* 设置用户名和密码
* @param name
* @param pass
*/
public void setNamePass(String name,String pass) {
username = name;
password = pass;
}

/**
* 设置邮件主题
* @param mailSubject
* @return
*/
public boolean setSubject(String mailSubject) {
System.out.println("设置邮件主题！");
try{
mimeMsg.setSubject(mailSubject);
return true;
}
catch(Exception e) {
System.err.println("设置邮件主题发生错误！");
return false;
}
}

/**
* 设置邮件正文
* @param mailBody String
*/
public boolean setBody(String mailBody) {
try{
BodyPart bp = new MimeBodyPart();
bp.setContent(""+mailBody,"text/html;charset=GBK");
mp.addBodyPart(bp);

return true;
} catch(Exception e){
System.err.println("设置邮件正文时发生错误！"+e);
return false;
}
}
/**
* 添加附件
* @param filename String
*/
public boolean addFileAffix(String filename) {

System.out.println("增加邮件附件："+filename);
try{
BodyPart bp = new MimeBodyPart();
FileDataSource fileds = new FileDataSource(filename);
bp.setDataHandler(new DataHandler(fileds));
bp.setFileName(fileds.getName());

mp.addBodyPart(bp);

return true;
} catch(Exception e){
System.err.println("增加邮件附件："+filename+"发生错误！"+e);
return false;
}
}

/**
* 设置发信人
* @param from String
*/
public boolean setFrom(String from) {
System.out.println("设置发信人！");
try{
mimeMsg.setFrom(new InternetAddress(from)); //设置发信人
return true;
} catch(Exception e) {
return false;
}
}
/**
* 设置收信人
* @param to String
*/
public boolean setTo(String to){
if(to == null)return false;
try{
mimeMsg.setRecipients(Message.RecipientType.TO,InternetAddress.parse(to));
return true;
} catch(Exception e) {
return false;
}
}

/**
* 设置抄送人
* @param copyto String
*/
public boolean setCopyTo(String copyto)
{
if(copyto == null)return false;
try{
mimeMsg.setRecipients(Message.RecipientType.CC,(Address[])InternetAddress.parse(copyto));
return true;
}
catch(Exception e)
{ return false; }
}

/**
* 发送邮件
*/
public boolean sendOut()
{
try{
mimeMsg.setContent(mp);
mimeMsg.saveChanges();
System.out.println("正在发送邮件....");

Session mailSession = Session.getInstance(props,null);
Transport transport = mailSession.getTransport("smtp");
transport.connect((String)props.get("mail.smtp.host"),username,password);
transport.sendMessage(mimeMsg,mimeMsg.getRecipients(Message.RecipientType.TO));
transport.sendMessage(mimeMsg,mimeMsg.getRecipients(Message.RecipientType.CC));
//transport.send(mimeMsg);

System.out.println("发送邮件成功！");
transport.close();

return true;
} catch(Exception e) {
System.err.println("邮件发送失败！"+e);
return false;
}
}

/**
* 调用sendOut方法完成邮件发送
* @param smtp
* @param from
* @param to
* @param subject
* @param content
* @param username
* @param password
* @return boolean
*/
public static boolean send(String smtp,String from,String to,String subject,String content,String username,String password) {
Mail theMail = new Mail(smtp);
theMail.setNeedAuth(true); //需要验证

if(!theMail.setSubject(subject)) return false;
if(!theMail.setBody(content)) return false;
if(!theMail.setTo(to)) return false;
if(!theMail.setFrom(from)) return false;
theMail.setNamePass(username,password);

if(!theMail.sendOut()) return false;
return true;
}

/**
* 调用sendOut方法完成邮件发送,带抄送
* @param smtp
* @param from
* @param to
* @param copyto
* @param subject
* @param content
* @param username
* @param password
* @return boolean
*/
public static boolean sendAndCc(String smtp,String from,String to,String copyto,String subject,String content,String username,String password) {
Mail theMail = new Mail(smtp);
theMail.setNeedAuth(true); //需要验证

if(!theMail.setSubject(subject)) return false;
if(!theMail.setBody(content)) return false;
if(!theMail.setTo(to)) return false;
if(!theMail.setCopyTo(copyto)) return false;
if(!theMail.setFrom(from)) return false;
theMail.setNamePass(username,password);

if(!theMail.sendOut()) return false;
return true;
}

/**
* 调用sendOut方法完成邮件发送,带附件
* @param smtp
* @param from
* @param to
* @param subject
* @param content
* @param username
* @param password
* @param filename 附件路径
* @return
*/
public static boolean send(String smtp,String from,String to,String subject,String content,String username,String password,String filename) {
Mail theMail = new Mail(smtp);
theMail.setNeedAuth(true); //需要验证

if(!theMail.setSubject(subject)) return false;
if(!theMail.setBody(content)) return false;
if(!theMail.addFileAffix(filename)) return false;
if(!theMail.setTo(to)) return false;
if(!theMail.setFrom(from)) return false;
theMail.setNamePass(username,password);

if(!theMail.sendOut()) return false;
return true;
}

/**
* 调用sendOut方法完成邮件发送,带附件和抄送
* @param smtp
* @param from
* @param to
* @param copyto
* @param subject
* @param content
* @param username
* @param password
* @param filename
* @return
*/
public static boolean sendAndCc(String smtp,String from,String to,String copyto,String subject,String content,String username,String password,String filename) {
Mail theMail = new Mail(smtp);
theMail.setNeedAuth(true); //需要验证

if(!theMail.setSubject(subject)) return false;
if(!theMail.setBody(content)) return false;
if(!theMail.addFileAffix(filename)) return false;
if(!theMail.setTo(to)) return false;
if(!theMail.setCopyTo(copyto)) return false;
if(!theMail.setFrom(from)) return false;
theMail.setNamePass(username,password);

if(!theMail.sendOut()) return false;
return true;
}

}

public static void main(String[] args){
String smtp = "SMTP服务器";
String from = "发信人";
String to = "收信人";
String copyto = "抄送人";
String subject = "邮件主题";
String content = "邮件内容";
String username="用户名";
String password="密码";
String filename = "附件路径，如：F:\\笔记<a>\\struts2</a>与mvc.txt";
Mail.sendAndCc(smtp, from, to, copyto, subject, content, username, password, filename);
}