收邮件、更改邮件标志 javamai +imap

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package?com.yourcompany.mail;

import?java.io.*;

import?java.security.Security;
import?java.text.*;

import?java.util.*;

import?javax.mail.*;

import?javax.mail.internet.*;

public?class?gmailRead?{

????private?MimeMessage?mimeMessage?=?null;

????private?String?saveAttachPath?=?"";?//?附件下载后的存放目录

????private?StringBuffer?bodytext?=?new?StringBuffer();//?存放邮件内容的StringBuffer对象

????private?String?dateformat?=?"yy-MM-dd?HH:mm";?//?默认的日前显示格式

????/**
?????*?*?構造函数,初始化一个MimeMessage對象
?????*?
?????*/

????public?gmailRead()?{

????}

????public?gmailRead(MimeMessage?mimeMessage)?{

????????this.mimeMessage?=?mimeMessage;

????????System.out.println("create　a　PraseMimeMessage　object........");

????}

????/**
?????*?*?獲取一个MimeMessage對象
?????*?
?????*/

????public?void?setMimeMessage(MimeMessage?mimeMessage)?{

????????this.mimeMessage?=?mimeMessage;

????}

????/**
?????*?*?獲得發件人的地址和姓名
?????*?
?????*/

????public?String?getFrom()?throws?Exception?{

????????InternetAddress?address[]?=?(InternetAddress[])?mimeMessage.getFrom();

????????String?from?=?address[0].getAddress();

????????if?(from?==?null)

????????????from?=?"";

????????String?personal?=?address[0].getPersonal();

????????if?(personal?==?null)

????????????personal?=?"";

????????String?fromaddr?=?personal?+?"<"?+?from?+?">";

????????return?fromaddr;

????}

????/**
?????*?
?????*?獲得郵件的收件人，抄送，和密送的地址和姓名，根據所传递的参数的不同如
?????*?
?????*?to?獲得邮件的收件人?cc?獲得邮件的抄送人地址?bcc?獲得邮件的密送人地址
?????*?
?????*/

????public?String?getMailAddress(String?type)?throws?Exception?{

????????String?mailaddr?=?"";

????????String?addtype?=?type.toUpperCase();

????????InternetAddress[]?address?=?null;

????????if?(addtype.equals("TO")?||?addtype.equals("CC")

????????||?addtype.equals("BCC"))?{

????????????if?(addtype.equals("TO"))?{

????????????????address?=?(InternetAddress[])?mimeMessage

????????????????.getRecipients(Message.RecipientType.TO);

????????????}?else?if?(addtype.equals("CC"))?{

????????????????address?=?(InternetAddress[])?mimeMessage

????????????????.getRecipients(Message.RecipientType.CC);

????????????}?else?{

????????????????address?=?(InternetAddress[])?mimeMessage

????????????????.getRecipients(Message.RecipientType.BCC);

????????????}

????????????if?(address?!=?null)?{

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

????????????????????String?email?=?address[i].getAddress();

????????????????????if?(email?==?null)

????????????????????????email?=?"";

????????????????????else?{

????????????????????????email?=?MimeUtility.decodeText(email);

????????????????????}

????????????????????String?personal?=?address[i].getPersonal();

????????????????????if?(personal?==?null)

????????????????????????personal?=?"";

????????????????????else?{

????????????????????????personal?=?MimeUtility.decodeText(personal);

????????????????????}

????????????????????String?compositeto?=?personal?+?"<"?+?email?+?">";

????????????????????mailaddr?+=?","?+?compositeto;

????????????????}

????????????????mailaddr?=?mailaddr.substring(1);

????????????}

????????}?else?{

????????????throw?new?Exception("Error?emailaddr?type!");

????????}

????????return?mailaddr;

????}

????/**
?????*?*?獲得郵件主题
?????*?
?????*/

????public?String?getSubject()?throws?MessagingException?{

????????String?subject?=?"";

????????try?{

????????????subject?=?MimeUtility.decodeText(mimeMessage.getSubject());

????????????if?(subject?==?null)

????????????????subject?=?"";

????????}?catch?(Exception?exce)?{

????????}

????????return?subject;

????}

????/**
?????*?*?獲得郵件的發送日期
?????*?
?????*/

????public?String?getSentDate()?throws?Exception?{

????????Date?sentdate?=?mimeMessage.getSentDate();

????????SimpleDateFormat?format?=?new?SimpleDateFormat(dateformat);

????????return?format.format(sentdate);

????}

????/**
?????*?*?獲得郵件的正文内容
?????*?
?????*/

????public?String?getBodyText()?{

????????return?bodytext.toString();

????}

????/**
?????*?
?????*?解析郵件，把得到的郵件内容保存到一个StringBuffer对象中，解析邮件?*
?????*?
?????*?主要是根据MimeType类型的不同执行不同的操作，一步一步的解析
?????*?
?????*/

????public?void?getMailContent(Part?part)?throws?Exception?{

????????String?contenttype?=?part.getContentType();

????????int?nameindex?=?contenttype.indexOf("name");

????????boolean?conname?=?false;

????????if?(nameindex?!=?-1)

????????????conname?=?true;

????????System.out.println("CONTENTTYPE:　"?+?contenttype);

????????if?(part.isMimeType("text/plain")?&&?!conname)?{

????????????bodytext.append((String)?part.getContent());

????????}?else?if?(part.isMimeType("text/html")?&&?!conname)?{

????????????bodytext.append((String)?part.getContent());

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

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

????????????int?counts?=?multipart.getCount();

????????????for?(int?i?=?0;?i?<?counts;?i++)?{

????????????????getMailContent(multipart.getBodyPart(i));

????????????}

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

????????????getMailContent((Part)?part.getContent());

????????}?else?{

????????}

????}

????/**
?????*?*?判断此邮件是否需要回执，如果需要回执返回"true",否则返回"false"
?????*?
?????*/

????public?boolean?getReplySign()?throws?MessagingException?{

????????boolean?replysign?=?false;

????????String?needreply[]?=?mimeMessage

????????.getHeader("Disposition-Notification-To");

????????if?(needreply?!=?null)?{

????????????replysign?=?true;

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