java原生的郵箱發送工具類

這是個人項目中使用的郵箱發送的，基於ssm使用，關於springboot繼承的請自行百度。 

package com.o2o.common.mail;

import java.io.FileOutputStream;
import java.util.Date;
import java.util.Properties;
import java.util.UUID;

import javax.activation.DataHandler;
import javax.activation.FileDataSource;
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;
import javax.mail.internet.MimeUtility;
/**
 * 郵箱推送工具類
 * @author Administrator
 *
 */
public class MailUtil {
	private static final MailUtil instance = new MailUtil(); /// 直接初始化一個實例對象

	private MailUtil() {

	}
	public static MailUtil getInstance() {
		return instance;
	}
	//域名服務器
	private static final String host = "";
	//用戶名
	private static final String account = "";
	//授權碼
	private static final String authorizationCode = "";
	//收件人郵箱
	private static final String from = "";
	
	/**
	 * 郵件發送靜態方法
	 * @param host smtp服務器地址，，示例 smtp.163.com
	 * @param account   郵箱用戶名 
	 * @param authorizationCode  授權碼
	 */
	public  void Sendmail(String to,String subject,String content) throws Exception  {
		Properties prop = new Properties();
		prop.setProperty("mail.host", host);
		prop.setProperty("mail.transport.protocol", "smtp");
		prop.setProperty("mail.smtp.auth", "true");
		// 使用JavaMail發送郵件的5個步驟
		// 1、創建session
		Session session = Session.getInstance(prop);
		// 開啓Session的debug模式，這樣就可以查看到程序發送Email的運行狀態
		session.setDebug(true);
		// 2、通過session得到transport對象
		Transport ts = session.getTransport();
		// 3、連上郵件服務器，需要發件人提供郵箱的用戶名和密碼進行驗證
		ts.connect(host, account, authorizationCode);
		// 4、創建郵件
		//Message message = createSimpleMail(session, to, subject, content);
		Message message = sendHtmlMail(session, to, subject, content);
		// 5、發送郵件
		ts.sendMessage(message, message.getAllRecipients());
		ts.close();
	}
	
    
	/**
	 * @Method: createSimpleMail
	 * @Description: 創建一封只包含文本的郵件
	 * @Anthor:劉偉剛
	 * @param session
	 * @param from   發件人郵箱地址
	 * @param to    收件人郵箱地址
	 * @param subject   郵件主題
	 * @param content    郵件文檔內容，
	 * @return
	 * @throws Exception
	 */
	private MimeMessage createSimpleMail(Session session,String to,String subject,String content) throws Exception {
		// 創建郵件對象
		MimeMessage message = new MimeMessage(session);
		// 指明郵件的發件人
		message.setFrom(new InternetAddress(from));
		// 指明郵件的收件人，現在發件人和收件人是一樣的，那就是自己給自己發
		message.setRecipient(Message.RecipientType.TO, new InternetAddress(to));
		// 郵件的標題
		message.setSubject(subject);
		// 郵件的文本內容
		message.setContent(content, "text/html;charset=UTF-8");
		// 返回創建好的郵件對象
		return message;
	}                                                                                         
    
	private MimeMessage sendHtmlMail(Session session,String to,String subject,String content)throws Exception{
		// 創建郵件對象
		MimeMessage message = new MimeMessage(session);
		// 指明郵件的發件人
		message.setFrom(new InternetAddress(from));
		// 指明郵件的收件人，現在發件人和收件人是一樣的，那就是自己給自己發
		message.setRecipient(Message.RecipientType.TO, new InternetAddress(to));
		// 消息發送的時間
        message.setSentDate(new Date());
		// 郵件的標題
		message.setSubject(subject);
        // MiniMultipart類是一個容器類，包含MimeBodyPart類型的對象
        Multipart mainPart = new MimeMultipart();
        // 創建一個包含HTML內容的MimeBodyPart
        BodyPart html = new MimeBodyPart();
        // 設置HTML內容
        html.setContent(content, "text/html; charset=utf-8");
        mainPart.addBodyPart(html);
        // 將MiniMultipart對象設置爲郵件內容
        message.setContent(mainPart);
        return message;
    }

	
	
	/**
	 * @Method: createImageMail
	 * @Description: 生成一封郵件正文帶圖片的郵件
	 * @Anthor:劉偉剛
	 * @param session
	 * @return
	 * @throws Exception
	 */
	private MimeMessage createImageMail(Session session,String from,String to,String subject,String content,String imgpath) throws Exception {
		   //創建郵件                                                                                         
		   MimeMessage message = new MimeMessage(session);                                                
		   // 設置郵件的基本信息                                                                                   
		   //發件人                                                                                          
		   message.setFrom(new InternetAddress(from));                                         
		   //收件人                                                                                          
		   message.setRecipient(Message.RecipientType.TO, new InternetAddress(to));       
		   //郵件標題                                                                                         
		   message.setSubject(subject);                                                                  
		   // 準備郵件數據                                                                                      
		   // 準備郵件正文數據                                                                                    
		   MimeBodyPart text = new MimeBodyPart();                                                        
		   text.setContent(content, "text/html;charset=UTF-8"); //"這是一封郵件正文帶圖片<img src='cid:xxx.jpg'>的郵件"          
		   // 準備圖片數據                                                                                      
		   MimeBodyPart image = new MimeBodyPart();                                                       
		   DataHandler dh = new DataHandler(new FileDataSource(imgpath));  //"src\\1.jpg"                          
		   image.setDataHandler(dh);                                                                      
		   image.setContentID(UUID.randomUUID()+".jpg");                                                                 
		   // 描述數據關係                                                                                      
		   MimeMultipart mm = new MimeMultipart();                                                        
		   mm.addBodyPart(text);                                                                          
		   mm.addBodyPart(image);                                                                         
		   mm.setSubType("related");                                                                      
		                                                                                                  
		   message.setContent(mm);                                                                        
		   message.saveChanges();                                                                         
		   //將創建好的郵件寫入到E盤以文件的形式進行保存                                                                       
		   message.writeTo(new FileOutputStream("E:\\ImageMail.eml"));                                    
		   //返回創建好的郵件                                                                                     
		   return message;                                                                                
		}
	
	
     
	/**
	 * @Method: createAttachMail
	 * @Description: 創建一封帶附件的郵件
	 * @Anthor:劉偉剛
	 * 
	 * @param session
	 * @return
	 * @throws Exception
	 */
	private MimeMessage createAttachMail(Session session) throws Exception {
		MimeMessage message = new MimeMessage(session);

		// 設置郵件的基本信息
		// 發件人
		message.setFrom(new InternetAddress("[email protected]"));
		// 收件人
		message.setRecipient(Message.RecipientType.TO, new InternetAddress("[email protected]"));
		// 郵件標題
		message.setSubject("JavaMail郵件發送測試");

		// 創建郵件正文，爲了避免郵件正文中文亂碼問題，需要使用charset=UTF-8指明字符編碼
		MimeBodyPart text = new MimeBodyPart();
		text.setContent("使用JavaMail創建的帶附件的郵件", "text/html;charset=UTF-8");

		// 創建郵件附件
		MimeBodyPart attach = new MimeBodyPart();
		DataHandler dh = new DataHandler(new FileDataSource("src\\2.jpg"));
		attach.setDataHandler(dh);
		attach.setFileName(dh.getName()); //

		// 創建容器描述數據關係
		MimeMultipart mp = new MimeMultipart();
		mp.addBodyPart(text);
		mp.addBodyPart(attach);
		mp.setSubType("mixed");

		message.setContent(mp);
		message.saveChanges();
		// 將創建的Email寫入到E盤存儲
		message.writeTo(new FileOutputStream("E:\\attachMail.eml"));
		// 返回生成的郵件
		return message;
	}                                                                                                   
    
	/**
	 * @Method: createMixedMail
	 * @Description: 生成一封帶附件和帶圖片的郵件
	 * @Anthor:劉偉剛
	 * @param session
	 * @return
	 * @throws Exception
	 */
	private  MimeMessage createMixedMail(Session session) throws Exception {
		// 創建郵件
		MimeMessage message = new MimeMessage(session);

		// 設置郵件的基本信息
		message.setFrom(new InternetAddress("[email protected]"));
		message.setRecipient(Message.RecipientType.TO, new InternetAddress("[email protected]"));
		message.setSubject("帶附件和帶圖片的的郵件");

		// 正文
		MimeBodyPart text = new MimeBodyPart();
		text.setContent("xxx這是女的xxxx<br/><img src='cid:aaa.jpg'>", "text/html;charset=UTF-8");

		// 圖片
		MimeBodyPart image = new MimeBodyPart();
		image.setDataHandler(new DataHandler(new FileDataSource("src\\3.jpg")));
		image.setContentID("aaa.jpg");

		// 附件1
		MimeBodyPart attach = new MimeBodyPart();
		DataHandler dh = new DataHandler(new FileDataSource("src\\4.zip"));
		attach.setDataHandler(dh);
		attach.setFileName(dh.getName());

		// 附件2
		MimeBodyPart attach2 = new MimeBodyPart();
		DataHandler dh2 = new DataHandler(new FileDataSource("src\\波子.zip"));
		attach2.setDataHandler(dh2);
		attach2.setFileName(MimeUtility.encodeText(dh2.getName()));

		// 描述關係:正文和圖片
		MimeMultipart mp1 = new MimeMultipart();
		mp1.addBodyPart(text);
		mp1.addBodyPart(image);
		mp1.setSubType("related");

		// 描述關係:正文和附件
		MimeMultipart mp2 = new MimeMultipart();
		mp2.addBodyPart(attach);
		mp2.addBodyPart(attach2);

		// 代表正文的bodypart
		MimeBodyPart content = new MimeBodyPart();
		content.setContent(mp1);
		mp2.addBodyPart(content);
		mp2.setSubType("mixed");

		message.setContent(mp2);
		message.saveChanges();

		message.writeTo(new FileOutputStream("E:\\MixedMail.eml"));
		// 返回創建好的的郵件
		return message;
	}
	
	
	
}