public static voidmain(String args[]) {

Properties props= new Properties(); //参数配置

props.setProperty("mail.transport.protocol", "smtp"); //使用的协议(JavaMail规范要求)

props.setProperty("mail.smtp.host", "smtp.exmail.qq.com"); //发件人的邮箱的SMTP服务器地址

props.setProperty("mail.smtp.auth", "true"); //需要请求认证//PS:某些邮箱服务器要求SMTP连接需要使用SSL安全认证(为了提高安全性,邮箱支持SSL连接,也可以自己开启),//如果无法连接邮件服务器,仔细查看控制台打印的 log,如果有有类似"连接失败,要求 SSL安全连接"等错误,//开启 SSL安全连接//SMTP服务器的端口(非 SSL连接的端口一般默认为 25,可以不添加,如果开启了SSL连接,//需要改为对应邮箱的SMTP服务器的端口,具体可查看对应邮箱服务的帮助,//QQ邮箱的SMTP(SLL)端口为465或587

final String smtpPort = "465";

props.setProperty("mail.smtp.port", smtpPort);

props.setProperty("mail.smtp.socketFactory.class", "javax.net.ssl.SSLSocketFactory");

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

props.setProperty("mail.smtp.socketFactory.port", smtpPort);

Session session=Session.getDefaultInstance(props);

session.setDebug(false);try{

Store store= session.getStore("imap");

store.connect("imap.exmail.qq.com", "it01@tofba.com", "*****");//change the user and password accordingly

Folder folder = store.getFolder("inbox");if (!folder.exists()) {

System.out.println("inbox not found");

System.exit(0);

}

folder.open(Folder.READ_ONLY);

Message[] messages=folder.getMessages();if (messages == null || messages.length <= 0) {

System.out.println("this inbox no messages");

System.exit(0);

}for(Message message : messages) {

String subject=message.getSubject();if(StringUtils.isNotBlank(subject)) {

System.out.println("subject:" +subject);

}/** 解析邮件内容*/Object content=message.getContent();if (null !=content) {if (content instanceofMimeMultipart) {

MimeMultipart multipart=(MimeMultipart)content;

parseMultipart(multipart);

}

}

}

}catch(Exception e) {

e.printStackTrace();

}

}/*** 对复杂邮件的解析

*

*@parammultipart

*@throwsMessagingException

*@throwsIOException*/

public static void parseMultipart(Multipart multipart) throwsMessagingException, IOException {int count =multipart.getCount();for (int idx = 0; idx < count; idx++) {

BodyPart bodyPart=multipart.getBodyPart(idx);

System.out.println(bodyPart.getContentType());if (bodyPart.isMimeType("text/plain")) {

System.out.println(bodyPart.getContent());

}else if (bodyPart.isMimeType("text/html")) {

System.out.println(bodyPart.getContent());

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

Multipart mpart=(Multipart)bodyPart.getContent();

parseMultipart(mpart);

}else if (bodyPart.isMimeType("application/octet-stream")) {

String disposition=bodyPart.getDisposition();

System.out.println(disposition);if (StringUtils.isNotBlank(disposition) &&disposition.equalsIgnoreCase(BodyPart.ATTACHMENT)) {

String fileName=bodyPart.getFileName();

InputStream is=bodyPart.getInputStream();

copy(is,new FileOutputStream("D:\\tofba\\email\\" +fileName));

}

}

}

}/*** 文件拷贝,在用户进行附件下载的时候,可以把附件的InputStream传给用户进行下载

*

*@paramis

*@paramos

*@throwsIOException*/

public static voidcopy(InputStream is, OutputStream os)throwsIOException {byte[] bytes = new byte[1024];int len = 0;while ((len = is.read(bytes)) != -1) {

os.write(bytes,0, len);

}if (os != null)

os.close();if (is != null)

is.close();

}