使用JavaMail简单的发送邮件

使用JavaMail简单的发送邮件

一、JavaMail简介

JavaMail，顾名思义，提供给开发者处理电子邮件相关的编程接口。它是Sun发布的用来处理email的API。它可以方便地执行一些常用的邮件传输。

二、简单使用

  import java.io.File;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.util.Date;
import java.util.List;
import java.util.Map;
import java.util.Properties;

import javax.activation.DataHandler;
  import javax.activation.DataSource;
  import javax.activation.FileDataSource;
  import javax.mail.Address;
  import javax.mail.Authenticator;
  import javax.mail.BodyPart;
  import javax.mail.Message;
  import javax.mail.MessagingException;
  import javax.mail.Multipart;
  import javax.mail.PasswordAuthentication;
  import javax.mail.Session;
  import javax.mail.Transport;
  import javax.mail.internet.AddressException;
  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;

  public class SendEmail {
    private String username = null;
      private String password = null;
      private Authenticator auth = null;
      private MimeMessage mimeMessage =null;
      private Properties pros = null;
      private Multipart multipart = null;
    private BodyPart bodypart= null;
    /**
      * 初始化账号密码并验证
      * 创建MimeMessage对象
    * 发送邮件必须的步骤:1
    * @param username
    * @param password
    */
    public SendEmail(String username,String password){
    this.username = username;
      this.password = password;
    }
    /**
    * 初始化MimeMessage对象
    * 发送邮件必须的步骤:3
      */
      public void initMessage(){
      this.auth = new Email_Autherticator();
    Session session = Session.getDefaultInstance(pros,auth);
    session.setDebug(true); //设置获取 debug 信息
    mimeMessage = new MimeMessage(session);
      }
      /**
      * 设置email系统参数
      * 接收一个map集合key为string类型，值为String
        * 发送邮件必须的步骤:2
   * @param map
   */
      public void setPros(Map<String,String> map){
    pros = new Properties();
    for(Map.Entry<String,String> entry:map.entrySet()){
    pros.setProperty(entry.getKey(), entry.getValue());
      }
    }
      /**
      * 验证账号密码
      * 发送邮件必须的步骤
      * @author Administrator
    *
      */
public class Email_Autherticator extends Authenticator
{
public PasswordAuthentication getPasswordAuthentication()
{
return new PasswordAuthentication(username, password);
}
}
/**
* 设置发送邮件的基本参数(去除繁琐的邮件设置)
* @param sub 设置邮件主题
* @param text 设置邮件文本内容
* @param rec 设置邮件接收人
* @throws MessagingException
* @throws UnsupportedEncodingException
*/
public void setDefaultMessagePros(String sub,String text,String rec) throws MessagingException, UnsupportedEncodingException{
mimeMessage.setSubject(sub);
mimeMessage.setText(text);
mimeMessage.setRecipient(Message.RecipientType.TO, new InternetAddress(rec));
mimeMessage.setSentDate(new Date());
mimeMessage.setFrom(new InternetAddress(username,username));
}
/**
* 设置主题
* @param subject
* @throws MessagingException
*/
public void setSubject(String subject) throws MessagingException{
mimeMessage.setSubject(subject);
}
/**
* 设置日期
* @param date
* @throws MessagingException
*/
public void setDate(Date date) throws MessagingException{
mimeMessage.setSentDate(new Date());
}
/**
* 设置邮件文本内容
* @param text
* @throws MessagingException
*/
public void setText(String text) throws MessagingException{
mimeMessage.setText(text);
}
/**
* 设置邮件头部
* @param arg0
* @param arg1
* @throws MessagingException
*/
public void setHeader(String arg0,String arg1) throws MessagingException{
mimeMessage.setHeader(arg0, arg1);
}
/**
* 设置邮件接收人地址 <单人发送>
* @param recipient
* @throws MessagingException
*/
public void setRecipient(String recipient) throws MessagingException{
mimeMessage.setRecipient(Message.RecipientType.TO, new InternetAddress(recipient));
}
/**
* 设置邮件接收人地址 <多人发送>
* @param list
* @throws MessagingException
* @throws AddressException
*/
public String setRecipients(List<String> recs) throws AddressException, MessagingException{
if(recs.isEmpty()){
return "接收人地址为空!";
}
for(String str:recs){
mimeMessage.addRecipient(Message.RecipientType.TO, new InternetAddress(str));
}
return "加入接收人地址成功!";
}
/**
* 设置邮件接收人地址 <多人发送>
* @param StringBuffer<parms,parms2,parms.....>
* @throws MessagingException
* @throws AddressException
*/
@SuppressWarnings("static-access")
public String setRecipients(StringBuffer sb) throws AddressException, MessagingException{
if(sb==null||"".equals(sb)){
return "字符串数据为空!";
}
Address []address = new InternetAddress().parse(sb.toString());
mimeMessage.addRecipients(Message.RecipientType.TO, address);
return "收件人加入成功";
}
/**
* 设置邮件发送人的名字
* @param from
* @throws UnsupportedEncodingException
* @throws MessagingException
*/
public void setFrom(String from) throws UnsupportedEncodingException, MessagingException{
mimeMessage.setFrom(new InternetAddress(username,from));
}
/**
* 发送邮件<单人发送>
* return 是否发送成功
* @throws MessagingException
*/
public String sendMessage() throws MessagingException{
Transport.send(mimeMessage);
return "success";
}
/**
* 设置附件
* @param file 发送文件的路径
*/
public void setMultipart(String file) throws MessagingException, IOException{
if(multipart==null){
multipart = new MimeMultipart();
}
multipart.addBodyPart(writeFiles(file));
mimeMessage.setContent(multipart);
}
/**
* 设置附件<添加多附件>
* @param fileList<接收List集合>
* @throws MessagingException
* @throws IOException
*/
public void setMultiparts(List<String> fileList) throws MessagingException, IOException{
if(multipart==null){
multipart = new MimeMultipart();
}
for(String s:fileList){
multipart.addBodyPart(writeFiles(s));
}
mimeMessage.setContent(multipart);
}
/**
* 发送文本内容，设置编码方式
* <方法与发送附件配套使用>
* <发送普通的文本内容请使用setText()方法>
* @param s
* @param type
* @throws MessagingException
*/
public void setContent(String s,String type) throws MessagingException{
if(multipart==null){
multipart = new MimeMultipart();
}
bodypart = new MimeBodyPart();
bodypart.setContent(s, type);
multipart.addBodyPart(bodypart);
mimeMessage.setContent(multipart);
mimeMessage.saveChanges();
}
/**
* 读取附件
* @param filePath
* @return
* @throws IOException
* @throws MessagingException
*/
public BodyPart writeFiles(String filePath)throws IOException, MessagingException{
File file = new File(filePath);
if(!file.exists()){
throw new IOException("文件不存在!请确定文件路径是否正确");
}
bodypart = new MimeBodyPart();
DataSource dataSource = new FileDataSource(file);
bodypart.setDataHandler(new DataHandler(dataSource));
//文件名要加入编码，不然出现乱码
bodypart.setFileName(MimeUtility.encodeText(file.getName()));
return bodypart;
}
}

三、测试

public class TestSend
{
public TestSend(List<String> list,Map<String,String> message) throws MessagingException, IOException
{

Map<String,String> map= new HashMap<String,String>();
SendEmail mail = new SendEmail("[email protected]","pnvxllwznrnubbaf");
map.put("mail.smtp.host", "smtp.qq.com");

/*
* 添加收件人有三种方法：
* 1,单人添加(单人发送)调用setRecipient(str);发送String类型
* 2,多人添加(群发)调用setRecipients(list);发送list集合类型
* 3,多人添加(群发)调用setRecipients(sb);发送StringBuffer类型
*/
//list.add("***[email protected]");
mail.setRecipients(list);

mail.setSubject(message.get("title"));
mail.setDate(new Date());
mail.setFrom("***有限公司");
mail.setContent(message.get("content"), "text/html; charset=UTF-8");
System.out.println(mail.sendMessage());
}
}

成功

使用JavaMail简单的发送邮件

猜你喜欢