java实现简单发送邮件功能

<!--发送邮件API-->

    <!-- https://mvnrepository.com/artifact/javax.mail/javax.mail-api -->

    < dependency >

      < groupId >javax.mail</ groupId >

      < artifactId >javax.mail-api</ artifactId >

      < version >1.6.2</ version >

    </ dependency >

    <!-- https://mvnrepository.com/artifact/com.sun.mail/javax.mail -->

    < dependency >

      < groupId >com.sun.mail</ groupId >

      < artifactId >javax.mail</ artifactId >

      < version >1.6.2</ version >

</ dependency >

public class EmailException extends Exception {

     public EmailException(String message) {

         super (message);

     }

     public EmailException() {

             super ();

     }

     /**

     * 

     */

     private static final long serialVersionUID = 115631651651651651L;

}

import java.io.BufferedInputStream;

import java.io.BufferedOutputStream;

import java.io.File;

import java.io.FileNotFoundException;

import java.io.FileOutputStream;

import java.io.IOException;

import java.io.InputStream;

import java.io.UnsupportedEncodingException;

import java.text.SimpleDateFormat;

import java.util.Date;

import java.util.Properties;

import javax.mail.Address;

import javax.mail.BodyPart;

import javax.mail.Flags;

import javax.mail.Folder;

import javax.mail.Message;

import javax.mail.MessagingException;

import javax.mail.Multipart;

import javax.mail.Part;

import javax.mail.Session;

import javax.mail.Store;

import javax.mail.internet.InternetAddress;

import javax.mail.internet.MimeMessage;

import javax.mail.internet.MimeMultipart;

import javax.mail.internet.MimeUtility;

import com.sun.mail.util.MailSSLSocketFactory;

public class IMAPReceiveMail {

     private String user = "" ; //账号

     private String password = "" ; //密码

     private   String HOST = "" ; // smtp服务器

//    private Properties props = null;

     private Folder folder = null ; //收件箱

     private Store store  = null ; //实例对象

//    final String pop3 = "IMAP";

     final String imap = "imap" ;

     public IMAPReceiveMail(String user,String password) {

         this .password = password; //密码

         this .user = user; //账户

     }

     /**

     * @param message 邮件对象

     * @param to 收件人

     * @throws MessagingException

     * @throws IOException

     */

//    public void forwardMail(Message message,String to) throws MessagingException, IOException {

//            Message forward = new MimeMessage(session);

//            forward.setSubject(message.getSubject());

//            forward.setFrom(new InternetAddress(to));

//            forward.setRecipient(Message.RecipientType.TO, new InternetAddress(to));

//            forward.setSentDate(new Date());

//            forward.setContent(message.getContent(), message.getContentType());

//

//            Transport smtp = session.getTransport("smtp");

//            smtp.connect(HOST, user, password);//连接服务器的邮箱

//            smtp.sendMessage(forward, forward.getAllRecipients());

//            smtp.close();

//     }

     /**

     * 接收邮件

     */

     public   Folder resceive() throws Exception {

         /**

         * 因为现在使用的是163邮箱 而163的 pop地址是 pop3.163.com 端口是 110 比如使用好未来企业邮箱 就需要换成 好未来邮箱的

         * pop服务器地址 pop.263.net 和 端口 110

         */

         String duankou = "" ; // 端口号

         String servicePath = "" ; // 服务器地址

         if (user== null ||user.length()== 0 ) throw new EmailException( "账户不能为空！！！！" );

         if (password== null ||password.length()== 0 ) throw new EmailException( "密码不能为空！！！！" );

         if (user.contains( "@163" )) {

             duankou = "143" ; // 端口号

             servicePath = "imap.163.com" ; // 服务器地址

         } else if (user.contains( "@qq" )) {

             duankou = "993" ; // 端口号

             servicePath = "imap.qq.com" ; // 服务器地址

         } else {

             throw new EmailException( "不支持该协议" );

         }

         // 准备连接服务器的会话信息

         Properties props = new Properties();

         props.setProperty( "mail.store.protocol" , imap); // 使用pop3协议

         props.setProperty( "mail.imap.socketFactory.fallback" , "false" );

         props.setProperty( "mail.imap.port" , duankou); // 端口

         props.setProperty( "mail.imap.socketFactory.port" , duankou); // 端口

         props.setProperty( "mail.transport.protocol" , "smtp" ); // 发送邮件协议名称

         props.setProperty( "mail.smtp.auth" , "true" );   //需要经过授权，也就是有户名和密码的校验，这样才能通过验证（一定要有这一条

         props.setProperty( "mail.host" , HOST);

         //关闭读取附件时分批获取 BASE64 输入流的配置

         props.setProperty( "mail.imap.partialfetch" , "false" );

         props.setProperty( "mail.imaps.partialfetch" , "false" );

//        props.setProperty("mail.pop3.host", servicePath); // pop3服务器

//        final String SSL_FACTORY = "javax.net.ssl.SSLSocketFactory"; 

//        Security.addProvider(new com.sun.net.ssl.internal.ssl.Provider());

//        props.setProperty("mail.imap.socketFactory.class", SSL_FACTORY);

         MailSSLSocketFactory sf = new MailSSLSocketFactory(); //ssl加密

        sf.setTrustAllHosts( true );

        props.put( "mail.imap.ssl.enable" , "true" );

        props.put( "mail.imap.ssl.socketFactory" , sf);

         // 创建Session实例对象

        Session session = Session.getInstance(props);

         session.setDebug( false );

         store = session.getStore(imap);

         store.connect(servicePath,user,password); // 163邮箱程序登录属于第三方登录所以这里的密码是163给的授权密码而并非普通的登录密码

         // 获得收件箱

         folder = store.getFolder( "INBOX" );

         /*

         * Folder.READ_ONLY：只读权限 Folder.READ_WRITE：可读可写（可以修改邮件的状态）

         */

         folder.open(Folder.READ_WRITE); // 打开收件箱

         // 由于POP3协议无法获知邮件的状态,所以getUnreadMessageCount得到的是收件箱的邮件总数

//        System.out.println("未读邮件数: " + folder.getUnreadMessageCount());

         // 由于POP3协议无法获知邮件的状态,所以下面得到的结果始终都是为0

//        System.out.println("删除邮件数: " + folder.getDeletedMessageCount());

//        System.out.println("新邮件: " + folder.getNewMessageCount());

         // 获得收件箱中的邮件总数

//        System.out.println("邮件总数: " + folder.getMessageCount());

         // 得到收件箱中的所有邮件,并解析

//        Message[] messages = folder.getMessages();

//        parseMessage(messages);

         // 得到收件箱中的所有邮件并且删除邮件

//        deleteMessage(messages);

         // 释放资源

//        folder.close(true);

//        store.close();

         return folder;

     }

     public void Colsefolder() throws MessagingException { //关闭资源

         if (folder!= null ) {

             folder.close();

         }

         if (store!= null ) {

             store.close();

         }

     }

     /**

     * 解析邮件

     * 

     * @param messages 要解析的邮件列表

     */

     public   void parseMessage(Message... messages) throws MessagingException, IOException {

         if (messages == null || messages.length < 1 )

             throw new MessagingException( "未找到要解析的邮件!" );

         // 解析所有邮件

         for ( int i = 0 , count = messages.length; i < count; i++) {

             MimeMessage msg = (MimeMessage) messages[i];

             System.out.println( "------------------解析第" + msg.getMessageNumber() + "封邮件-------------------- " );

             System.out.println( "主题: " + getSubject(msg));

             System.out.println( "发件人: " + getFrom(msg));

             System.out.println( "收件人：" + getReceiveAddress(msg, null ));

             System.out.println( "发送时间：" + getSentDate(msg, null ));

             System.out.println( "是否已读：" + isSeen(msg));

             System.out.println( "邮件优先级：" + getPriority(msg));

             System.out.println( "是否需要回执：" + isReplySign(msg));

             System.out.println( "邮件大小：" + msg.getSize() * 1024 + "kb" );

             boolean isContainerAttachment = isContainAttachment(msg);

             System.out.println( "是否包含附件：" + isContainerAttachment);

             if (isContainerAttachment) {

                 saveAttachment(msg, "f:\\mailTest\\" + msg.getSubject() + "_" + i + "_" ); // 保存附件

             }

             StringBuffer content = new StringBuffer( 30 );

             getMailTextContent(msg, content);

             System.out.println( "邮件正文：" + (content.length() > 100 ? content.substring( 0 , 100 ) + "..." : content));

             System.out.println( "------------------第" + msg.getMessageNumber() + "封邮件解析结束-------------------- " );

             System.out.println();

         }

     }

     /**

     * 解析邮件

     * 

     * @param messages 要解析的邮件列表

     */

     public   void deleteMessage(Message... messages) throws MessagingException, IOException {

         if (messages == null || messages.length < 1 )

             throw new MessagingException( "未找到要解析的邮件!" );

         // 解析所有邮件

         for ( int i = 0 , count = messages.length; i < count; i++) {

             /**

             * 邮件删除

             */

             Message message = messages[i];

             String subject = message.getSubject();

             // set the DELETE flag to true

             message.setFlag(Flags.Flag.DELETED, true );

             System.out.println( "Marked DELETE for message: " + subject);

         }

     }

     /**

     * 获得邮件主题

     * 

     * @param msg 邮件内容

     * @return 解码后的邮件主题

     */

     public   String getSubject(MimeMessage msg) throws UnsupportedEncodingException, MessagingException {

         return MimeUtility.decodeText(msg.getSubject());

     }

     /**

     * 获得邮件发件人

     * 

     * @param msg 邮件内容

     * @return 姓名 <Email地址>

     * @throws MessagingException

     * @throws UnsupportedEncodingException

     */

     public   String getFrom(MimeMessage msg) throws MessagingException, UnsupportedEncodingException {

         String from = "" ;

         Address[] froms = msg.getFrom();

         if (froms.length < 1 )

             throw new MessagingException( "没有发件人!" );

         InternetAddress address = (InternetAddress) froms[ 0 ];

         String person = address.getPersonal();

         if (person != null ) {

             person = MimeUtility.decodeText(person) + " " ;

         } else {

             person = "" ;

         }

         from = person + "<" + address.getAddress() + ">" ;

         return from;

     }

     public   String getFromAddress(MimeMessage msg) throws MessagingException, UnsupportedEncodingException {

         String from = "" ;

         Address[] froms = msg.getFrom();

         if (froms.length < 1 )

             throw new MessagingException( "没有发件人!" );

         InternetAddress address = (InternetAddress) froms[ 0 ];

         from = address.getAddress();

         return from;

     }

     /**

     * 根据收件人类型，获取邮件收件人、抄送和密送地址。如果收件人类型为空，则获得所有的收件人

     * <p>

     * Message.RecipientType.TO 收件人

     * </p>

     * <p>

     * Message.RecipientType.CC 抄送

     * </p>

     * <p>

     * Message.RecipientType.BCC 密送

     * </p>

     * 

     * @param msg  邮件内容

     * @param type 收件人类型

     * @return 收件人1 <邮件地址1>, 收件人2 <邮件地址2>, ...

     * @throws MessagingException

     */

     public   String getReceiveAddress(MimeMessage msg, Message.RecipientType type) throws MessagingException {

         StringBuffer receiveAddress = new StringBuffer();

         Address[] addresss = null ;

         if (type == null ) {

             addresss = msg.getAllRecipients();

         } else {

             addresss = msg.getRecipients(type);

         }

         if (addresss == null || addresss.length < 1 )

             throw new MessagingException( "没有收件人!" );

         for (Address address : addresss) {

             InternetAddress internetAddress = (InternetAddress) address;

             receiveAddress.append(internetAddress.toUnicodeString()).append( "," );

         }

         receiveAddress.deleteCharAt(receiveAddress.length() - 1 ); // 删除最后一个逗号

         return receiveAddress.toString();

     }

     /**

     * 获得邮件发送时间

     * 

     * @param msg 邮件内容

     * @return yyyy年mm月dd日 星期X HH:mm

     * @throws MessagingException

     */

     public   String getSentDate(MimeMessage msg, String pattern) throws MessagingException {

         Date receivedDate = msg.getSentDate();

         if (receivedDate == null )

             return "" ;

         if (pattern == null || "" .equals(pattern))

             pattern = "yyyy年MM月dd日 E HH:mm " ;

         return new SimpleDateFormat(pattern).format(receivedDate);

     }

     /**

     * 判断邮件中是否包含附件

     * 

     * @param msg 邮件内容

     * @return 邮件中存在附件返回true，不存在返回false

     * @throws MessagingException

     * @throws IOException

     */

     public   boolean isContainAttachment(Part part) throws MessagingException, IOException {

         boolean flag = false ;

         if (part.isMimeType( "multipart/*" )) {

             MimeMultipart multipart = (MimeMultipart) part.getContent();

             int partCount = multipart.getCount();

             for ( int i = 0 ; i < partCount; i++) {

                 BodyPart bodyPart = multipart.getBodyPart(i);

                 String disp = bodyPart.getDisposition();

                 if (disp != null && (disp.equalsIgnoreCase(Part.ATTACHMENT) || disp.equalsIgnoreCase(Part.INLINE))) {

                     flag = true ;

                 } else if (bodyPart.isMimeType( "multipart/*" )) {

                     flag = isContainAttachment(bodyPart);

                 } else {

                     String contentType = bodyPart.getContentType();

                     if (contentType.indexOf( "application" ) != - 1 ) {

                         flag = true ;

                     }

                     if (contentType.indexOf( "name" ) != - 1 ) {

                         flag = true ;

                     }

                 }

                 if (flag)

                     break ;

             }

         } else if (part.isMimeType( "message/rfc822" )) {

             flag = isContainAttachment((Part) part.getContent());

         }

         return flag;

     }

     /**

     * 判断邮件是否已读

     * 

     * @param msg 邮件内容

     * @return 如果邮件已读返回true,否则返回false

     * @throws MessagingException

     */

     public   boolean isSeen(MimeMessage msg) throws MessagingException {

         return msg.getFlags().contains(Flags.Flag.SEEN);

     }

     /**

     * 判断邮件是否需要阅读回执

     * 

     * @param msg 邮件内容

     * @return 需要回执返回true,否则返回false

     * @throws MessagingException

     */

     public   boolean isReplySign(MimeMessage msg) throws MessagingException {

         boolean replySign = false ;

         String[] headers = msg.getHeader( "Disposition-Notification-To" );

         if (headers != null )

             replySign = true ;

         return replySign;

     }

     /**

     * 获得邮件的优先级

     * 

     * @param msg 邮件内容

     * @return 1(High):紧急 3:普通(Normal) 5:低(Low)

     * @throws MessagingException

     */

     public   String getPriority(MimeMessage msg) throws MessagingException {

         String priority = "普通" ;

         String[] headers = msg.getHeader( "X-Priority" );

         if (headers != null ) {

             String headerPriority = headers[ 0 ];

             if (headerPriority.indexOf( "1" ) != - 1 || headerPriority.indexOf( "High" ) != - 1 )

                 priority = "紧急" ;

             else if (headerPriority.indexOf( "5" ) != - 1 || headerPriority.indexOf( "Low" ) != - 1 )

                 priority = "低" ;

             else

                 priority = "普通" ;

         }

         return priority;

     }

     /**

     * 获得邮件文本内容

     * 

     * @param part    邮件体

     * @param content 存储邮件文本内容的字符串

     * @throws MessagingException

     * @throws IOException

     */

     public   void getMailTextContent(Part part, StringBuffer content) throws MessagingException, IOException {

         // 如果是文本类型的附件，通过getContent方法可以取到文本内容，但这不是我们需要的结果，所以在这里要做判断

         boolean isContainTextAttach = part.getContentType().indexOf( "name" ) > 0 ;

         if (part.isMimeType( "text/*" ) && !isContainTextAttach) {

             content.append(part.getContent().toString());

         } else if (part.isMimeType( "message/rfc822" )) {

             getMailTextContent((Part) part.getContent(), content);

         } else if (part.isMimeType( "multipart/*" )) {

             Multipart multipart = (Multipart) part.getContent();

             int partCount = multipart.getCount();

             for ( int i = 0 ; i < partCount; i++) {

                 BodyPart bodyPart = multipart.getBodyPart(i);

                 getMailTextContent(bodyPart, content);

             }

         }

     }

     /**

     * 保存附件

     * 

     * @param part    邮件中多个组合体中的其中一个组合体

     * @param destDir 附件保存目录

     * @throws UnsupportedEncodingException

     * @throws MessagingException

     * @throws FileNotFoundException

     * @throws IOException

     */

     public   void saveAttachment(Part part, String destDir)

             throws UnsupportedEncodingException, MessagingException, FileNotFoundException, IOException {

         if (part.isMimeType( "multipart/*" )) {

             Multipart multipart = (Multipart) part.getContent(); // 复杂体邮件

             // 复杂体邮件包含多个邮件体

             int partCount = multipart.getCount();

             for ( int i = 0 ; i < partCount; i++) {

                 // 获得复杂体邮件中其中一个邮件体

                 BodyPart bodyPart = multipart.getBodyPart(i);

                 // 某一个邮件体也有可能是由多个邮件体组成的复杂体

                 String disp = bodyPart.getDisposition();

                 if (disp != null && (disp.equalsIgnoreCase(Part.ATTACHMENT) || disp.equalsIgnoreCase(Part.INLINE))) {

                     InputStream is = bodyPart.getInputStream();

                     saveFile(is, destDir, decodeText(bodyPart.getFileName()));

                 } else if (bodyPart.isMimeType( "multipart/*" )) {

                     saveAttachment(bodyPart, destDir);

                 } else {

                     String contentType = bodyPart.getContentType();

                     if (contentType.indexOf( "name" ) != - 1 || contentType.indexOf( "application" ) != - 1 ) {

                         saveFile(bodyPart.getInputStream(), destDir, decodeText(bodyPart.getFileName()));

                     }

                 }

             }

         } else if (part.isMimeType( "message/rfc822" )) {

             saveAttachment((Part) part.getContent(), destDir);

         }

     }

     /**

     * 读取输入流中的数据保存至指定目录

     * 

     * @param is       输入流

     * @param fileName 文件名

     * @param destDir  文件存储目录

     * @throws FileNotFoundException

     * @throws IOException

     */

     private   void saveFile(InputStream is, String destDir, String fileName)

             throws FileNotFoundException, IOException {

         BufferedInputStream bis = new BufferedInputStream(is);

         BufferedOutputStream bos = new BufferedOutputStream( new FileOutputStream( new File(destDir + fileName)));

         int len = - 1 ;

         while ((len = bis.read()) != - 1 ) {

             bos.write(len);

             bos.flush();

         }

         bos.close();

         bis.close();

     }

     public void SetSEEN(MimeMessage message) throws MessagingException { //设置文件已读

         message.setFlag(Flags.Flag.SEEN, true );

     }

     /**

     * 文本解码

     * 

     * @param encodeText 解码MimeUtility.encodeText(String text)方法编码后的文本

     * @return 解码后的文本

     * @throws UnsupportedEncodingException

     */

     public   String decodeText(String encodeText) throws UnsupportedEncodingException {

         if (encodeText == null || "" .equals(encodeText)) {

             return "" ;

         } else {

             return MimeUtility.decodeText(encodeText);

         }

     }

}

import java.io.BufferedInputStream;

import java.io.BufferedOutputStream;

import java.io.File;

import java.io.FileNotFoundException;

import java.io.FileOutputStream;

import java.io.IOException;

import java.io.InputStream;

import java.io.UnsupportedEncodingException;

import java.text.SimpleDateFormat;

import java.util.Date;

import java.util.Properties;

import javax.mail.Address;

import javax.mail.BodyPart;

import javax.mail.Flags;

import javax.mail.Folder;

import javax.mail.Message;

import javax.mail.MessagingException;

import javax.mail.Multipart;

import javax.mail.Part;

import javax.mail.Session;

import javax.mail.Store;

import javax.mail.internet.InternetAddress;

import javax.mail.internet.MimeMessage;

import javax.mail.internet.MimeMultipart;

import javax.mail.internet.MimeUtility;

import com.sun.mail.util.MailSSLSocketFactory;

/**

  * 使用POP3协议接收邮件

  */

public class POP3ReceiveMail {

     private String user = "" ; //账号

     private String password = "" ; //密码

//    private Properties props = null;

     private Folder folder = null ; //收件箱

     private Store store  = null ; //实例对象

     final String pop3 = "pop3" ;

//    final String imap = "imap";

     public POP3ReceiveMail(String user,String password) {

         this .password = password; //密码

         this .user = user; //账户

     }

     /**

     * 接收邮件

     */

     public   Folder resceive() throws Exception {

         /**

         * 因为现在使用的是163邮箱 而163的 pop地址是 pop3.163.com 端口是 110 比如使用好未来企业邮箱 就需要换成 好未来邮箱的

         * pop服务器地址 pop.263.net 和 端口 110

         */

         String duankou = "" ; // 端口号

         String servicePath = "" ; // 服务器地址

         if (user== null ||user.length()== 0 ) throw new EmailException( "账户不能为空！！！！" );

         if (password== null ||password.length()== 0 ) throw new EmailException( "密码不能为空！！！！" );

         if (user.contains( "@163" )) {

             duankou = "110" ; // 端口号

             servicePath = "pop3.163.com" ; // 服务器地址

         } else if (user.contains( "@qq" )) {

             duankou = "995" ; // 端口号

             servicePath = "pop.qq.com" ; // 服务器地址

         } else {

             throw new EmailException( "不支持该协议" );

         }

         // 准备连接服务器的会话信息

         Properties props = new Properties();

         props.setProperty( "mail.store.protocol" , pop3); // 使用pop3协议

//        props.setProperty("mail.transport.protocol", pop3); // 使用pop3协议

         props.setProperty( "mail.pop3.port" , duankou); // 端口

         props.setProperty( "mail.pop3.host" , servicePath); // pop3服务器

         props.setProperty( "mail.pop3.socketFactory.fallback" , "true" );

         MailSSLSocketFactory sf = new MailSSLSocketFactory(); //ssl加密

        sf.setTrustAllHosts( true );

        props.put( "mail.pop3.ssl.enable" , "true" );

        props.put( "mail.pop3.ssl.socketFactory" , sf);

//        final String SSL_FACTORY = "javax.net.ssl.SSLSocketFactory"; 

//      Security.addProvider(new com.sun.net.ssl.internal.ssl.Provider());

//        props.setProperty("mail.pop3.socketFactory.class", SSL_FACTORY);

         // 创建Session实例对象

         Session session = Session.getInstance(props);

         store = session.getStore(pop3);

         store.connect(servicePath,user,password); // 163邮箱程序登录属于第三方登录所以这里的密码是163给的授权密码而并非普通的登录密码

         // 获得收件箱

         folder = store.getFolder( "INBOX" );

         /*

         * Folder.READ_ONLY：只读权限 Folder.READ_WRITE：可读可写（可以修改邮件的状态）

         */

//        folder.open(Folder.READ_WRITE); // 打开收件箱

         folder.open(Folder.READ_WRITE); // 打开收件箱

         // 由于POP3协议无法获知邮件的状态,所以getUnreadMessageCount得到的是收件箱的邮件总数

//        System.out.println("未读邮件数: " + folder.getUnreadMessageCount());

         // 由于POP3协议无法获知邮件的状态,所以下面得到的结果始终都是为0

//        System.out.println("删除邮件数: " + folder.getDeletedMessageCount());

//        System.out.println("新邮件: " + folder.getNewMessageCount());

         // 获得收件箱中的邮件总数

//        System.out.println("邮件总数: " + folder.getMessageCount());

         // 得到收件箱中的所有邮件,并解析

//        Message[] messages = folder.getMessages();

//        parseMessage(messages);

         // 得到收件箱中的所有邮件并且删除邮件

//        deleteMessage(messages);

         // 释放资源

//        folder.close(true);

//        store.close();

         return folder;

     }

     public void Colsefolder() throws MessagingException { //关闭资源

         if (folder!= null ) {

             folder.close();

         }

         if (store!= null ) {

             store.close();

         }

     }

     /**

     * 解析邮件

     * 

     * @param messages 要解析的邮件列表

     */

     public   void parseMessage(Message... messages) throws MessagingException, IOException {

         if (messages == null || messages.length < 1 )

             throw new MessagingException( "未找到要解析的邮件!" );

         // 解析所有邮件

         for ( int i = 0 , count = messages.length; i < count; i++) {

             MimeMessage msg = (MimeMessage) messages[i];

             System.out.println( "------------------解析第" + msg.getMessageNumber() + "封邮件-------------------- " );

             System.out.println( "主题: " + getSubject(msg));

             System.out.println( "发件人: " + getFrom(msg));

             System.out.println( "收件人：" + getReceiveAddress(msg, null ));

             System.out.println( "发送时间：" + getSentDate(msg, null ));

             System.out.println( "是否已读：" + isSeen(msg));

             System.out.println( "邮件优先级：" + getPriority(msg));

             System.out.println( "是否需要回执：" + isReplySign(msg));

             System.out.println( "邮件大小：" + msg.getSize() * 1024 + "kb" );

             boolean isContainerAttachment = isContainAttachment(msg);

             System.out.println( "是否包含附件：" + isContainerAttachment);

             if (isContainerAttachment) {

                 saveAttachment(msg, "f:\\mailTest\\" + msg.getSubject() + "_" + i + "_" ); // 保存附件

             }

             StringBuffer content = new StringBuffer( 30 );

             getMailTextContent(msg, content);

             System.out.println( "邮件正文：" + (content.length() > 100 ? content.substring( 0 , 100 ) + "..." : content));

             System.out.println( "------------------第" + msg.getMessageNumber() + "封邮件解析结束-------------------- " );

             System.out.println();

         }

     }

     /**

     * 解析邮件

     * 

     * @param messages 要解析的邮件列表

     */

     public   void deleteMessage(Message... messages) throws MessagingException, IOException {

         if (messages == null || messages.length < 1 )

             throw new MessagingException( "未找到要解析的邮件!" );

         // 解析所有邮件

         for ( int i = 0 , count = messages.length; i < count; i++) {

             /**

             * 邮件删除

             */

             Message message = messages[i];

             String subject = message.getSubject();

             // set the DELETE flag to true

             message.setFlag(Flags.Flag.DELETED, true );

             System.out.println( "Marked DELETE for message: " + subject);

         }

     }

     /**

     * 获得邮件主题

     * 

     * @param msg 邮件内容

     * @return 解码后的邮件主题

     */

     public   String getSubject(MimeMessage msg) throws UnsupportedEncodingException, MessagingException {

         return MimeUtility.decodeText(msg.getSubject());

     }

     /**

     * 获得邮件发件人

     * 

     * @param msg 邮件内容

     * @return 姓名 <Email地址>

     * @throws MessagingException

     * @throws UnsupportedEncodingException

     */

     public   String getFrom(MimeMessage msg) throws MessagingException, UnsupportedEncodingException {

         String from = "" ;

         Address[] froms = msg.getFrom();

         if (froms.length < 1 )

             throw new MessagingException( "没有发件人!" );

         InternetAddress address = (InternetAddress) froms[ 0 ];

         String person = address.getPersonal();

         if (person != null ) {

             person = MimeUtility.decodeText(person) + " " ;

         } else {

             person = "" ;

         }

         from = person + "<" + address.getAddress() + ">" ;

         return from;

     }

     public   String getFromAddress(MimeMessage msg) throws MessagingException, UnsupportedEncodingException {

         String from = "" ;

         Address[] froms = msg.getFrom();

         if (froms.length < 1 )

             throw new MessagingException( "没有发件人!" );

         InternetAddress address = (InternetAddress) froms[ 0 ];

         from = address.getAddress();

         return from;

     }

     /**

     * 根据收件人类型，获取邮件收件人、抄送和密送地址。如果收件人类型为空，则获得所有的收件人

     * <p>

     * Message.RecipientType.TO 收件人

     * </p>

     * <p>

     * Message.RecipientType.CC 抄送

     * </p>

     * <p>

     * Message.RecipientType.BCC 密送

     * </p>

     * 

     * @param msg  邮件内容

     * @param type 收件人类型

     * @return 收件人1 <邮件地址1>, 收件人2 <邮件地址2>, ...

     * @throws MessagingException

     */

     public   String getReceiveAddress(MimeMessage msg, Message.RecipientType type) throws MessagingException {

         StringBuffer receiveAddress = new StringBuffer();

         Address[] addresss = null ;

         if (type == null ) {

             addresss = msg.getAllRecipients();

         } else {

             addresss = msg.getRecipients(type);

         }

         if (addresss == null || addresss.length < 1 )

             throw new MessagingException( "没有收件人!" );

         for (Address address : addresss) {

             InternetAddress internetAddress = (InternetAddress) address;

             receiveAddress.append(internetAddress.toUnicodeString()).append( "," );

         }

         receiveAddress.deleteCharAt(receiveAddress.length() - 1 ); // 删除最后一个逗号

         return receiveAddress.toString();

     }

     /**

     * 获得邮件发送时间

     * 

     * @param msg 邮件内容

     * @return yyyy年mm月dd日 星期X HH:mm

     * @throws MessagingException

     */

     public   String getSentDate(MimeMessage msg, String pattern) throws MessagingException {

         Date receivedDate = msg.getSentDate();

         if (receivedDate == null )

             return "" ;

         if (pattern == null || "" .equals(pattern))

             pattern = "yyyy年MM月dd日 E HH:mm " ;

         return new SimpleDateFormat(pattern).format(receivedDate);

     }

     /**

     * 判断邮件中是否包含附件

     * 

     * @param msg 邮件内容

     * @return 邮件中存在附件返回true，不存在返回false

     * @throws MessagingException

     * @throws IOException

     */

     public   boolean isContainAttachment(Part part) throws MessagingException, IOException {

         boolean flag = false ;

         if (part.isMimeType( "multipart/*" )) {

             MimeMultipart multipart = (MimeMultipart) part.getContent();

             int partCount = multipart.getCount();

             for ( int i = 0 ; i < partCount; i++) {

                 BodyPart bodyPart = multipart.getBodyPart(i);

                 String disp = bodyPart.getDisposition();

                 if (disp != null && (disp.equalsIgnoreCase(Part.ATTACHMENT) || disp.equalsIgnoreCase(Part.INLINE))) {

                     flag = true ;

                 } else if (bodyPart.isMimeType( "multipart/*" )) {

                     flag = isContainAttachment(bodyPart);

                 } else {

                     String contentType = bodyPart.getContentType();

                     if (contentType.indexOf( "application" ) != - 1 ) {

                         flag = true ;

                     }

                     if (contentType.indexOf( "name" ) != - 1 ) {

                         flag = true ;

                     }

                 }

                 if (flag)

                     break ;

             }

         } else if (part.isMimeType( "message/rfc822" )) {

             flag = isContainAttachment((Part) part.getContent());

         }

         return flag;

     }

     /**

     * 判断邮件是否已读

     * 

     * @param msg 邮件内容

     * @return 如果邮件已读返回true,否则返回false

     * @throws MessagingException

     */

     public   boolean isSeen(MimeMessage msg) throws MessagingException {

         return msg.getFlags().contains(Flags.Flag.SEEN);

     }

     /**

     * 判断邮件是否需要阅读回执

     * 

     * @param msg 邮件内容

     * @return 需要回执返回true,否则返回false

     * @throws MessagingException

     */

     public   boolean isReplySign(MimeMessage msg) throws MessagingException {

         boolean replySign = false ;

         String[] headers = msg.getHeader( "Disposition-Notification-To" );

         if (headers != null )

             replySign = true ;

         return replySign;

     }

     /**

     * 获得邮件的优先级

     * 

     * @param msg 邮件内容

     * @return 1(High):紧急 3:普通(Normal) 5:低(Low)

     * @throws MessagingException

     */

     public   String getPriority(MimeMessage msg) throws MessagingException {

         String priority = "普通" ;

         String[] headers = msg.getHeader( "X-Priority" );

         if (headers != null ) {

             String headerPriority = headers[ 0 ];

             if (headerPriority.indexOf( "1" ) != - 1 || headerPriority.indexOf( "High" ) != - 1 )

                 priority = "紧急" ;

             else if (headerPriority.indexOf( "5" ) != - 1 || headerPriority.indexOf( "Low" ) != - 1 )

                 priority = "低" ;

             else

                 priority = "普通" ;

         }

         return priority;

     }

     /**

     * 获得邮件文本内容

     * 

     * @param part    邮件体

     * @param content 存储邮件文本内容的字符串

     * @throws MessagingException

     * @throws IOException

     */

     public   void getMailTextContent(Part part, StringBuffer content) throws MessagingException, IOException {

         // 如果是文本类型的附件，通过getContent方法可以取到文本内容，但这不是我们需要的结果，所以在这里要做判断

         boolean isContainTextAttach = part.getContentType().indexOf( "name" ) > 0 ;

         if (part.isMimeType( "text/*" ) && !isContainTextAttach) {

             content.append(part.getContent().toString());

         } else if (part.isMimeType( "message/rfc822" )) {

             getMailTextContent((Part) part.getContent(), content);

         } else if (part.isMimeType( "multipart/*" )) {

             Multipart multipart = (Multipart) part.getContent();

             int partCount = multipart.getCount();

             for ( int i = 0 ; i < partCount; i++) {

                 BodyPart bodyPart = multipart.getBodyPart(i);

                 getMailTextContent(bodyPart, content);

             }

         }

     }

     /**

     * 保存附件

     * 

     * @param part    邮件中多个组合体中的其中一个组合体

     * @param destDir 附件保存目录

     * @throws UnsupportedEncodingException

     * @throws MessagingException

     * @throws FileNotFoundException

     * @throws IOException

     */

     public   void saveAttachment(Part part, String destDir)

             throws UnsupportedEncodingException, MessagingException, FileNotFoundException, IOException {

         if (part.isMimeType( "multipart/*" )) {

             Multipart multipart = (Multipart) part.getContent(); // 复杂体邮件

             // 复杂体邮件包含多个邮件体

             int partCount = multipart.getCount();

             for ( int i = 0 ; i < partCount; i++) {

                 // 获得复杂体邮件中其中一个邮件体

                 BodyPart bodyPart = multipart.getBodyPart(i);

                 // 某一个邮件体也有可能是由多个邮件体组成的复杂体

                 String disp = bodyPart.getDisposition();

                 if (disp != null && (disp.equalsIgnoreCase(Part.ATTACHMENT) || disp.equalsIgnoreCase(Part.INLINE))) {

                     InputStream is = bodyPart.getInputStream();

                     saveFile(is, destDir, decodeText(bodyPart.getFileName()));

                 } else if (bodyPart.isMimeType( "multipart/*" )) {

                     saveAttachment(bodyPart, destDir);

                 } else {

                     String contentType = bodyPart.getContentType();

                     if (contentType.indexOf( "name" ) != - 1 || contentType.indexOf( "application" ) != - 1 ) {

                         saveFile(bodyPart.getInputStream(), destDir, decodeText(bodyPart.getFileName()));

                     }

                 }

             }

         } else if (part.isMimeType( "message/rfc822" )) {

             saveAttachment((Part) part.getContent(), destDir);

         }

     }

     /**

     * 读取输入流中的数据保存至指定目录

     * 

     * @param is       输入流

     * @param fileName 文件名

     * @param destDir  文件存储目录

     * @throws FileNotFoundException

     * @throws IOException

     */

     private   void saveFile(InputStream is, String destDir, String fileName)

             throws FileNotFoundException, IOException {

         BufferedInputStream bis = new BufferedInputStream(is);

         BufferedOutputStream bos = new BufferedOutputStream( new FileOutputStream( new File(destDir + fileName)));

         int len = - 1 ;

         while ((len = bis.read()) != - 1 ) {

             bos.write(len);

             bos.flush();

         }

         bos.close();

         bis.close();

     }

     /**

     * 文本解码

     * 

     * @param encodeText 解码MimeUtility.encodeText(String text)方法编码后的文本

     * @return 解码后的文本

     * @throws UnsupportedEncodingException

     */

     public   String decodeText(String encodeText) throws UnsupportedEncodingException {

         if (encodeText == null || "" .equals(encodeText)) {

             return "" ;

         } else {

             return MimeUtility.decodeText(encodeText);

         }

     }

}

import java.io.File;

import java.io.IOException;

import java.io.UnsupportedEncodingException;

import java.security.GeneralSecurityException;

import java.util.Date;

import java.util.Properties;

import java.util.UUID;

import java.util.regex.Matcher;

import java.util.regex.Pattern;

import javax.activation.DataHandler;

import javax.activation.FileDataSource;

import javax.mail.BodyPart;

import javax.mail.Message;

import javax.mail.MessagingException;

import javax.mail.Multipart;

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;

import com.sun.mail.util.MailSSLSocketFactory;

/*

  * 发送邮件

  */

public class SendMailUtil {

     private   String HOST = "" ; // smtp服务器

     private String FROM = "" ; // 发件人地址

//    private String TO = ""; // 收件人地址

     private String[] AFFIX = null ; // 附件地址

//    private String AFFIXNAME = ""; // 附件名称

    private String USER = "" ; // 用户名

    private String PWD = "" ; // 163的授权码

//    private String SUBJECT = ""; // 邮件标题

    private String[] TOS = null ;

    private   Properties props = null ; //

    /**

      * @param USER 账户名

      * @param PWD    密码

      * @param FROM 发件人地址

      * @throws EmailException 

      * @throws GeneralSecurityException 

      */

    public SendMailUtil(String USER,String PWD,String FROM) throws EmailException, GeneralSecurityException {

         this .USER = USER; //账户

         this .PWD = PWD; //密码

         this .FROM = FROM; //发件人地址

         stratProperties();

    }

    private void stratProperties() throws EmailException, GeneralSecurityException {

         props = new Properties();

          if (USER== null ||USER.length()== 0 ) {

              throw new EmailException( "邮箱账号不能为空" );    

          } else {

              if (USER.contains( "@qq" )) {

                  HOST = "smtp.qq.com" ;

              } else if (USER.contains( "@163" )) {

                  HOST = "smtp.163.com" ;

              } else if (USER.contains( "@sina" )) {

                  HOST = "smtp.sina.com.cn" ;

              } else {

                  throw new EmailException( "不支持该协议" );

              }

//             props.setProperty("mail.smtp.host", HOST);//设置发送邮件的邮件服务器的属性（这里使用网易的smtp服务器）

              // 设置邮件服务器主机名

              props.setProperty( "mail.host" , HOST);

          }

          if (PWD== null ||PWD.length()== 0 ) throw new EmailException( "邮箱密码不能为空" );

          props.setProperty( "mail.transport.protocol" , "smtp" ); // 发送邮件协议名称

          props.setProperty( "mail.smtp.auth" , "true" );   //需要经过授权，也就是有户名和密码的校验，这样才能通过验证（一定要有这一条）

//         props.put("mail.debug", "true");//设置debug模式 后台输出邮件发送的过程

          MailSSLSocketFactory sf = new MailSSLSocketFactory(); //ssl加密

          sf.setTrustAllHosts( true );

          props.put( "mail.smtp.ssl.enable" , "true" );

          props.put( "mail.smtp.ssl.socketFactory" , sf);

    }

    public void forwardMail(Message message) throws AddressException, MessagingException, EmailException, IOException {

         if (TOS.length== 0 ) throw new EmailException( "收件人不能为空" );

         Session session = Session.getInstance(props); //用props对象构建一个session

//         session.setDebug(true);//关闭控制台输出

          MimeMessage newmessage = new MimeMessage(session); //用session为参数定义消息对象

          newmessage.setSubject(message.getSubject());

             newmessage.setFrom( new InternetAddress(FROM));

           newmessage.setSentDate( new Date());

          newmessage.setContent(message.getContent(), message.getContentType());

          InternetAddress[] sendTo = new InternetAddress[TOS.length]; // 加载收件人地址

          for ( int i = 0 ; i < TOS.length; i++) {  

              sendTo[i] = new InternetAddress(TOS[i]);  

          }

        newmessage.addRecipients(Message.RecipientType.TO,sendTo);

        newmessage.addRecipients(MimeMessage.RecipientType.CC, InternetAddress.parse(FROM)); //设置在发送给收信人之前给自己（发送方）抄送一份，不然会被当成垃圾邮件，报554错

        Transport smtp = session.getTransport( "smtp" );

        smtp.connect(HOST, USER, PWD);

        smtp.sendMessage(newmessage, newmessage.getAllRecipients());

        smtp.close();

    }

    /**

      * @param path 需要添加附件的文件路径

      * @throws EmailException 

      */

    public void addFile(String...path) throws EmailException {

         if (path== null ||path.length== 0 ) throw new EmailException( "附件路径不能为空" );    

         this .AFFIX = path;

    }

    public void setTo(String...to) throws EmailException {

         if (toString().length()> 0 ) {

             for (String t : to) {

                 boolean emailFormat = emailFormat(t);

                 if (!emailFormat) {

                     throw new EmailException(t+ "邮箱格式不正确" );    

                 }

             }

             TOS = to;

         } else {

             throw new EmailException( "收件人不能为空" );    

         }

    }

    /**

      ** 验证输入的邮箱格式是否符合

      * @param email

      * @return 是否合法

      */

    private   boolean emailFormat(String email)

    {

        boolean tag = true ;

        final String pattern1 = "^([a-z0-9A-Z]+[-|\\.]?)+[a-z0-9A-Z]@([a-z0-9A-Z]+(-[a-z0-9A-Z]+)?\\.)+[a-zA-Z]{2,}$" ;

        final Pattern pattern = Pattern.compile(pattern1);

        final Matcher mat = pattern.matcher(email);

        if (!mat.find()) {

            tag = false ;

        }

        return tag;

    }

    /**

      * @param SUBJECT 标题

      * @param context 文本信息

      * @throws EmailException

      * @throws MessagingException 

      * @throws AddressException 

      * @throws GeneralSecurityException 

      * @throws UnsupportedEncodingException 

      */

    public   void send(String SUBJECT,String context) throws EmailException, AddressException, MessagingException, GeneralSecurityException, UnsupportedEncodingException {

         if (SUBJECT== null ||SUBJECT.length()== 0 )SUBJECT=UUID.randomUUID().toString();

//        this.SUBJECT = SUBJECT;//标题

         if (TOS.length== 0 ) throw new EmailException( "收件人不能为空" );

         Session session = Session.getInstance(props); //用props对象构建一个session

//        session.setDebug(true);//关闭控制台输出

         MimeMessage message = new MimeMessage(session); //用session为参数定义消息对象

         message.setFrom( new InternetAddress(FROM)); // 加载发件人地址

         InternetAddress[] sendTo = new InternetAddress[TOS.length]; // 加载收件人地址

         for ( int i = 0 ; i < TOS.length; i++) {  

            sendTo[i] = new InternetAddress(TOS[i]);  

        }

         message.addRecipients(Message.RecipientType.TO,sendTo);

         message.addRecipients(MimeMessage.RecipientType.CC, InternetAddress.parse(FROM)); //设置在发送给收信人之前给自己（发送方）抄送一份，不然会被当成垃圾邮件，报554错

         message.setSubject(SUBJECT); //加载标题

         Multipart multipart = new MimeMultipart(); //向multipart对象中添加邮件的各个部分内容，包括文本内容和附件

         BodyPart contentPart = new MimeBodyPart(); //设置邮件的文本内容

        contentPart.setText(context);

        multipart.addBodyPart(contentPart);

        if (AFFIX!= null &&AFFIX.length> 0 ){ //添加附件

             for ( int i = 0 ; i <AFFIX.length ; i++) {

                 File file = new File(AFFIX[i]);

                 if (file.exists()) {

                     BodyPart messageBodyPart = new MimeBodyPart();

                     FileDataSource source = new FileDataSource(file);

//                     String AFFIXNAME = file.getName();

//                     System.out.println(AFFIXNAME);

                      messageBodyPart.setDataHandler( new DataHandler(source)); //添加附件的内容

                      messageBodyPart.setFileName(MimeUtility.encodeWord(file.getName(), "GBK" , null ));

                      multipart.addBodyPart(messageBodyPart);

                 } else {

                     throw new EmailException( "文件" +AFFIX[i]+ "不存在" );

                 }

             }

        }

        message.setContent(multipart); //将multipart对象放到message中

        message.saveChanges(); //保存邮件

        Transport transport = session.getTransport(); //发送邮件

        transport.connect(HOST, USER, PWD); //连接服务器的邮箱

        transport.sendMessage(message, message.getAllRecipients()); //把邮件发送出去

        transport.close(); //关闭连接

    }

}