javamail收邮件 ,转自http://www.blogjava.net/kissyan4916/articles/279130.html

javamail收邮件 ,转自http://www.blogjava.net/kissyan4916/articles/279130.html
关键技术:
  • javax.mail.Store:该类实现特定邮件协议(如POP3)上的读、写、监视、查找等操作。通过它的getFolder方法打开一个javax.mail.Folder。
  • javax.mail.Folder:该类用于描述邮件的分级组织,如收件箱、草稿箱。它的open方法打开分级组织,close方法关闭分级组织,getMessages方法获得分级组织中的邮件,getNewMessageCount方法获得分级组织中新邮件的数量,getUnreadMessageCount方法获得分级组织中未读邮件的数量
  • 根据MimeMessage的getFrom和getRecipients方法获得邮件的发件人和收件人地址列表,得到的是InternetAddress数组,根据InternetAddress的getAddress方法获得邮件地址,根据InternetAddress的getPersonal方法获得邮件地址的个人信息。
  • MimeMessage的getSubject、getSentDate、getMessageID方法获得邮件的主题、发送日期和邮件的ID(表示邮件)。
  • 通过MimeMessage的getContent方法获得邮件的内容,如果邮件是MIME邮件,那么得到的是一个Multipart的对象,如果是一共普通的文本邮件,那么得到的是BodyPart对象。Multipart可以包含多个BodyPart,而BodyPart本身又可以是Multipart。BodyPart的MimeType类型为“multipart/*”时,表示它是一个Mutipart。
  • 但一个BodyPart的disposition属性等于Part.ATTACHMENT或者Part.INLINE常量时,表示它带有附件。通过BodyPart的getInputStream方法可以获得附件的输入流。

package  book.email;

import  java.io.File;
import  java.util.Properties;
/**
 * 收邮件的基本信息
 
*/
public   class  MailReceiverInfo {
    
//  邮件服务器的IP、端口和协议
     private  String mailServerHost;
    
private  String mailServerPort  =   " 110 " ;
    
private  String protocal  =   " pop3 " ;
    
//  登陆邮件服务器的用户名和密码
     private  String userName;
    
private  String password;
    
//  保存邮件的路径
     private  String attachmentDir  =   " C:/temp/ " ;
    
private  String emailDir  =   " C:/temp/ " ;
    
private  String emailFileSuffix  =   " .eml " ;
    
//  是否需要身份验证
     private   boolean  validate  =   true ;

    
/**
     * 获得邮件会话属性
     
*/
    
public  Properties getProperties(){
        Properties p 
=   new  Properties();
        p.put(
" mail.pop3.host " this .mailServerHost);
        p.put(
" mail.pop3.port " this .mailServerPort);
        p.put(
" mail.pop3.auth " , validate  ?   " true "  :  " false " );
        
return  p;
    }
    
    
public  String getProtocal() {
        
return  protocal;
    }

    
public   void  setProtocal(String protocal) {
        
this .protocal  =  protocal;
    }

    
public  String getAttachmentDir() {
        
return  attachmentDir;
    }

    
public   void  setAttachmentDir(String attachmentDir) {
        
if  ( ! attachmentDir.endsWith(File.separator)){
            attachmentDir 
=  attachmentDir  +  File.separator;
        }
        
this .attachmentDir  =  attachmentDir;
    }

    
public  String getEmailDir() {
        
return  emailDir;
    }

    
public   void  setEmailDir(String emailDir) {
        
if  ( ! emailDir.endsWith(File.separator)){
            emailDir 
=  emailDir  +  File.separator;
        }
        
this .emailDir  =  emailDir;
    }

    
public  String getEmailFileSuffix() {
        
return  emailFileSuffix;
    }

    
public   void  setEmailFileSuffix(String emailFileSuffix) {
        
if  ( ! emailFileSuffix.startsWith( " . " )){
            emailFileSuffix 
=   " . "   +  emailFileSuffix;
        }
        
this .emailFileSuffix  =  emailFileSuffix;
    }

    
public  String getMailServerHost() {
        
return  mailServerHost;
    }

    
public   void  setMailServerHost(String mailServerHost) {
        
this .mailServerHost  =  mailServerHost;
    }

    
public  String getMailServerPort() {
        
return  mailServerPort;
    }

    
public   void  setMailServerPort(String mailServerPort) {
        
this .mailServerPort  =  mailServerPort;
    }

    
public  String getPassword() {
        
return  password;
    }

    
public   void  setPassword(String password) {
        
this .password  =  password;
    }

    
public  String getUserName() {
        
return  userName;
    }

    
public   void  setUserName(String userName) {
        
this .userName  =  userName;
    }

    
public   boolean  isValidate() {
        
return  validate;
    }

    
public   void  setValidate( boolean  validate) {
        
this .validate  =  validate;
    }
    
}







package  book.email;

import  java.io.BufferedReader;
import  java.io.BufferedWriter;
import  java.io.ByteArrayOutputStream;
import  java.io.File;
import  java.io.FileWriter;
import  java.io.IOException;
import  java.io.InputStreamReader;
import  java.io.Reader;
import  java.io.StringReader;
import  java.io.UnsupportedEncodingException;
import  java.util.Date;

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.NoSuchProviderException;
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.MimeUtility;

/**
 * 邮件接收器,目前支持pop3协议。
 * 能够接收文本、HTML和带有附件的邮件
 
*/
public   class  MailReceiver {
    
//  收邮件的参数配置
     private  MailReceiverInfo receiverInfo;
    
//  与邮件服务器连接后得到的邮箱
     private  Store store;
    
//  收件箱
     private  Folder folder;
    
//  收件箱中的邮件消息
     private  Message[] messages;
    
//  当前正在处理的邮件消息
     private  Message currentMessage;

    
private  String currentEmailFileName;

    
public  MailReceiver(MailReceiverInfo receiverInfo) {
        
this .receiverInfo  =  receiverInfo;
    }
    
/**
     * 收邮件
     
*/
    
public   void  receiveAllMail()  throws  Exception{
        
if  ( this .receiverInfo  ==   null ){
            
throw   new  Exception( " 必须提供接收邮件的参数! " );
        }
        
//  连接到服务器
         if  ( this .connectToServer()) {
            
//  打开收件箱
             if  ( this .openInBoxFolder()) {
                
//  获取所有邮件
                 this .getAllMail();
                
this .closeConnection();
            } 
else  {
                
throw   new  Exception( " 打开收件箱失败! " );
            }
        } 
else  {
            
throw   new  Exception( " 连接邮件服务器失败! " );
        }
    }
    
    
/**
     * 登陆邮件服务器
     
*/
    
private   boolean  connectToServer() {
        
//  判断是否需要身份认证
        MyAuthenticator authenticator  =   null ;
        
if  ( this .receiverInfo.isValidate()) {
            
//  如果需要身份认证,则创建一个密码验证器
            authenticator  =   new  MyAuthenticator( this .receiverInfo.getUserName(),
                    
this .receiverInfo.getPassword());
        }
        
// 创建session
        Session session  =  Session.getInstance( this .receiverInfo
                .getProperties(), authenticator);

        
// 创建store,建立连接
         try  {
            
this .store  =  session.getStore( this .receiverInfo.getProtocal());
        } 
catch  (NoSuchProviderException e) {
            System.out.println(
" 连接服务器失败! " );
            
return   false ;
        }

        System.out.println(
" connecting " );
        
try  {
            
this .store.connect();
        } 
catch  (MessagingException e) {
            System.out.println(
" 连接服务器失败! " );
            
return   false ;
        }
        System.out.println(
" 连接服务器成功 " );
        
return   true ;
    }
    
/**
     * 打开收件箱
     
*/
    
private   boolean  openInBoxFolder() {
        
try  {
            
this .folder  =  store.getFolder( " INBOX " );
            
//  只读
            folder.open(Folder.READ_ONLY);
            
return   true ;
        } 
catch  (MessagingException e) {
            System.err.println(
" 打开收件箱失败! " );
        }
        
return   false ;
    }
    
/**
     * 断开与邮件服务器的连接
     
*/
    
private   boolean  closeConnection() {
        
try  {
            
if  ( this .folder.isOpen()) {
                
this .folder.close( true );
            }
            
this .store.close();
            System.out.println(
" 成功关闭与邮件服务器的连接! " );
            
return   true ;
        } 
catch  (Exception e) {
            System.out.println(
" 关闭和邮件服务器之间连接时出错! " );
        }
        
return   false ;
    }
    
    
/**
     * 获取messages中的所有邮件
     * 
@throws  MessagingException 
     
*/
    
private   void  getAllMail()  throws  MessagingException {
        
// 从邮件文件夹获取邮件信息
         this .messages  =   this .folder.getMessages();
        System.out.println(
" 总的邮件数目: "   +  messages.length);
        System.out.println(
" 新邮件数目: "   +   this .getNewMessageCount());
        System.out.println(
" 未读邮件数目: "   +   this .getUnreadMessageCount());
        
// 将要下载的邮件的数量。
         int  mailArrayLength  =   this .getMessageCount();
        System.out.println(
" 一共有邮件 "   +  mailArrayLength  +   " " );
        
int  errorCounter  =   0 // 邮件下载出错计数器
         int  successCounter  =   0 ;
        
for  ( int  index  =   0 ; index  <  mailArrayLength; index ++ ) {
            
try  {
                
this .currentMessage  =  (messages[index]);  // 设置当前message
                System.out.println( " 正在获取第 "   +  index  +   " 封邮件 " );
                
this .showMailBasicInfo();
                getMail(); 
// 获取当前message
                System.out.println( " 成功获取第 "   +  index  +   " 封邮件 " );
                successCounter
++ ;
            } 
catch  (Throwable e) {
                errorCounter
++ ;
                System.err.println(
" 下载第 "   +  index  +   " 封邮件时出错 " );
            }
        }
        System.out.println(
" ------------------ " );
        System.out.println(
" 成功下载了 "   +  successCounter  +   " 封邮件 " );
        System.out.println(
" 失败下载了 "   +  errorCounter  +   " 封邮件 " );
        System.out.println(
" ------------------ " );
    }

    
/**
     * 显示邮件的基本信息
     
*/
    
private   void  showMailBasicInfo()  throws  Exception{
        showMailBasicInfo(
this .currentMessage);
    }
    
private   void  showMailBasicInfo(Message message)  throws  Exception {
        System.out.println(
" -------- 邮件ID: "   +   this .getMessageId()
                
+   "  --------- " );
        System.out.println(
" From: "   +   this .getFrom());
        System.out.println(
" To: "   +   this .getTOAddress());
        System.out.println(
" CC: "   +   this .getCCAddress());
        System.out.println(
" BCC: "   +   this .getBCCAddress());
        System.out.println(
" Subject: "   +   this .getSubject());
        System.out.println(
" 发送时间:: "   +   this .getSentDate());
        System.out.println(
" 是新邮件? "   +   this .isNew());
        System.out.println(
" 要求回执? "   +   this .getReplySign());
        System.out.println(
" 包含附件? "   +   this .isContainAttach());
        System.out.println(
" ------------------------------ " );
    }

    
/**
     * 获得邮件的收件人,抄送,和密送的地址和姓名,根据所传递的参数的不同 
     * "to"----收件人 "cc"---抄送人地址 "bcc"---密送人地址
     
*/
    
private  String getTOAddress()  throws  Exception {
        
return  getMailAddress( " TO " this .currentMessage);
    }

    
private  String getCCAddress()  throws  Exception {
        
return  getMailAddress( " CC " this .currentMessage);
    }

    
private  String getBCCAddress()  throws  Exception {
        
return  getMailAddress( " BCC " this .currentMessage);
    }

    
/**
     * 获得邮件地址
     * 
@param  type        类型,如收件人、抄送人、密送人
     * 
@param  mimeMessage    邮件消息
     * 
@return
     * 
@throws  Exception
     
*/
    
private  String getMailAddress(String type, Message mimeMessage)
            
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 ++ ) {
                    
//  先获取邮件地址
                    String email  =  address[i].getAddress();
                    
if  (email  ==   null ){
                        email 
=   "" ;
                    }
else  {
                        email 
=  MimeUtility.decodeText(email);
                    }
                    
//  再取得个人描述信息
                    String personal  =  address[i].getPersonal();
                    
if  (personal  ==   null ){
                        personal 
=   "" ;
                    } 
else  {
                        personal 
=  MimeUtility.decodeText(personal);
                    }
                    
//  将个人描述信息与邮件地址连起来
                    String compositeto  =  personal  +   " < "   +  email  +   " > " ;
                    
//  多个地址时,用逗号分开
                    mailaddr  +=   " , "   +  compositeto;
                }
                mailaddr 
=  mailaddr.substring( 1 );
            }
        } 
else  {
            
throw   new  Exception( " 错误的地址类型!! " );
        }
        
return  mailaddr;
    }

    
/**
     * 获得发件人的地址和姓名
     * 
@throws  Exception
     
*/
    
private  String getFrom()  throws  Exception {
        
return  getFrom( this .currentMessage);
    }

    
private  String getFrom(Message mimeMessage)  throws  Exception {
        InternetAddress[] address 
=  (InternetAddress[]) mimeMessage.getFrom();
        
//  获得发件人的邮箱
        String from  =  address[ 0 ].getAddress();
        
if  (from  ==   null ){
            from 
=   "" ;
        }
        
//  获得发件人的描述信息
        String personal  =  address[ 0 ].getPersonal();
        
if  (personal  ==   null ){
            personal 
=   "" ;
        }
        
//  拼成发件人完整信息
        String fromaddr  =  personal  +   " < "   +  from  +   " > " ;
        
return  fromaddr;
    }

    
/**
     * 获取messages中message的数量
     * 
@return
     
*/
    
private   int  getMessageCount() {
        
return   this .messages.length;
    }

    
/**
     * 获得收件箱中新邮件的数量
     * 
@return
     * 
@throws  MessagingException
     
*/
    
private   int  getNewMessageCount()  throws  MessagingException {
        
return   this .folder.getNewMessageCount();
    }

    
/**
     * 获得收件箱中未读邮件的数量
     * 
@return
     * 
@throws  MessagingException
     
*/
    
private   int  getUnreadMessageCount()  throws  MessagingException {
        
return   this .folder.getUnreadMessageCount();
    }

    
/**
     * 获得邮件主题
     
*/
    
private  String getSubject()  throws  MessagingException {
        
return  getSubject( this .currentMessage);
    }

    
private  String getSubject(Message mimeMessage)  throws  MessagingException {
        String subject 
=   "" ;
        
try  {
            
//  将邮件主题解码
            subject  =  MimeUtility.decodeText(mimeMessage.getSubject());
            
if  (subject  ==   null ){
                subject 
=   "" ;
            }
        } 
catch  (Exception exce) {
        }
        
return  subject;
    }

    
/**
     * 获得邮件发送日期
     
*/
    
private  Date getSentDate()  throws  Exception {
        
return  getSentDate( this .currentMessage);
    }

    
private  Date getSentDate(Message mimeMessage)  throws  Exception {
        
return  mimeMessage.getSentDate();
    }

    
/**
     * 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"
     
*/
    
private   boolean  getReplySign()  throws  MessagingException {
        
return  getReplySign( this .currentMessage);
    }

    
private   boolean  getReplySign(Message mimeMessage)  throws  MessagingException {
        
boolean  replysign  =   false ;
        String needreply[] 
=  mimeMessage
                .getHeader(
" Disposition-Notification-To " );
        
if  (needreply  !=   null ) {
            replysign 
=   true ;
        }
        
return  replysign;
    }

    
/**
     * 获得此邮件的Message-ID
     
*/
    
private  String getMessageId()  throws  MessagingException {
        
return  getMessageId( this .currentMessage);
    }

    
private  String getMessageId(Message mimeMessage)  throws  MessagingException {
        
return  ((MimeMessage) mimeMessage).getMessageID();
    }

    
/**
     * 判断此邮件是否已读,如果未读返回返回false,反之返回true
     
*/
    
private   boolean  isNew()  throws  MessagingException {
        
return  isNew( this .currentMessage);
    }
    
private   boolean  isNew(Message mimeMessage)  throws  MessagingException {
        
boolean  isnew  =   false ;
        Flags flags 
=  mimeMessage.getFlags();
        Flags.Flag[] flag 
=  flags.getSystemFlags();
        
for  ( int  i  =   0 ; i  <  flag.length; i ++ ) {
            
if  (flag[i]  ==  Flags.Flag.SEEN) {
                isnew 
=   true ;
                
break ;
            }
        }
        
return  isnew;
    }

    
/**
     * 判断此邮件是否包含附件
     
*/
    
private   boolean  isContainAttach()  throws  Exception {
        
return  isContainAttach( this .currentMessage);
    }
    
private   boolean  isContainAttach(Part part)  throws  Exception {
        
boolean  attachflag  =   false ;
        
if  (part.isMimeType( " multipart/* " )) {
            
//  如果邮件体包含多部分
            Multipart mp  =  (Multipart) part.getContent();
            
//  遍历每部分
             for  ( int  i  =   0 ; i  <  mp.getCount(); i ++ ) {
                
//  获得每部分的主体
                BodyPart bodyPart  =  mp.getBodyPart(i);
                String disposition 
=  bodyPart.getDisposition();
                
if  ((disposition  !=   null )
                        
&&  ((disposition.equals(Part.ATTACHMENT))  ||  (disposition
                                .equals(Part.INLINE)))){
                    attachflag 
=   true ;
                } 
else   if  (bodyPart.isMimeType( " multipart/* " )) {
                    attachflag 
=  isContainAttach((Part) bodyPart);
                } 
else  {
                    String contype 
=  bodyPart.getContentType();
                    
if  (contype.toLowerCase().indexOf( " application " !=   - 1 ){
                        attachflag 
=   true ;
                    }
                    
if  (contype.toLowerCase().indexOf( " name " !=   - 1 ){
                        attachflag 
=   true ;
                    }
                }
            }
        } 
else   if  (part.isMimeType( " message/rfc822 " )) {
            attachflag 
=  isContainAttach((Part) part.getContent());
        }
        
return  attachflag;
    }

    
    
/**
     * 获得当前邮件
     
*/
    
private   void  getMail()  throws  Exception {
        
try  {
            
this .saveMessageAsFile(currentMessage);
            
this .parseMessage(currentMessage);
        } 
catch  (IOException e) {
            
throw   new  IOException( " 保存邮件出错,检查保存路径 " );
        } 
catch  (MessagingException e) {
            
throw   new  MessagingException( " 邮件转换出错 " );
        } 
catch  (Exception e) {
            e.printStackTrace();
            
throw   new  Exception( " 未知错误 " );
        }
    }
    
    
/**
     * 保存邮件源文件
     
*/
    
private   void  saveMessageAsFile(Message message) {
        
try  {
            
//  将邮件的ID中尖括号中的部分做为邮件的文件名
            String oriFileName  =  getInfoBetweenBrackets( this .getMessageId(message)
                    .toString());
            
// 设置文件后缀名。若是附件则设法取得其文件后缀名作为将要保存文件的后缀名,
            
// 若是正文部分则用.htm做后缀名
            String emlName  =  oriFileName;
            String fileNameWidthExtension 
=   this .receiverInfo.getEmailDir()
                    
+  oriFileName  +   this .receiverInfo.getEmailFileSuffix();
            File storeFile 
=   new  File(fileNameWidthExtension);
            
for  ( int  i  =   0 ; storeFile.exists(); i ++ ) {
                emlName 
=  oriFileName  +  i;
                fileNameWidthExtension 
=   this .receiverInfo.getEmailDir()
                        
+  emlName  +   this .receiverInfo.getEmailFileSuffix();
                storeFile 
=   new  File(fileNameWidthExtension);
            }
            
this .currentEmailFileName  =  emlName;
            System.out.println(
" 邮件消息的存储路径:  "   +  fileNameWidthExtension);
            
//  将邮件消息的内容写入ByteArrayOutputStream流中
            ByteArrayOutputStream baos  =   new  ByteArrayOutputStream();
            message.writeTo(baos);
            
//  读取邮件消息流中的数据
            StringReader in  =   new  StringReader(baos.toString());
            
//  存储到文件
            saveFile(fileNameWidthExtension, in);
        } 
catch  (MessagingException e) {
            e.printStackTrace();
        } 
catch  (Exception e) {
            e.printStackTrace();
        }
    }

    
/*
     * 解析邮件
     
*/
    
private   void  parseMessage(Message message)  throws  IOException,
            MessagingException {
        Object content 
=  message.getContent();
        
//  处理多部分邮件
         if  (content  instanceof  Multipart) {
            handleMultipart((Multipart) content);
        } 
else  {
            handlePart(message);
        }
    }

    
/*
     * 解析Multipart
     
*/
    
private   void  handleMultipart(Multipart multipart)  throws  MessagingException,
            IOException {
        
for  ( int  i  =   0 , n  =  multipart.getCount(); i  <  n; i ++ ) {
            handlePart(multipart.getBodyPart(i));
        }
    }
    
/*
     * 解析指定part,从中提取文件
     
*/
    
private   void  handlePart(Part part)  throws  MessagingException, IOException {
        String disposition 
=  part.getDisposition();
        String contentType 
=  part.getContentType();
        String fileNameWidthExtension 
=   "" ;
        
//  获得邮件的内容输入流
        InputStreamReader sbis  =   new  InputStreamReader(part.getInputStream());
        
//  没有附件的情况
         if  (disposition  ==   null ) {
            
if  ((contentType.length()  >=   10 )
                    
&&  (contentType.toLowerCase().substring( 0 10 )
                            .equals(
" text/plain " ))) {
                fileNameWidthExtension 
=   this .receiverInfo.getAttachmentDir()
                        
+   this .currentEmailFileName  +   " .txt " ;
            } 
else   if  ((contentType.length()  >=   9 //  Check if html
                     &&  (contentType.toLowerCase().substring( 0 9 )
                            .equals(
" text/html " ))) {
                fileNameWidthExtension 
=   this .receiverInfo.getAttachmentDir()
                        
+   this .currentEmailFileName  +   " .html " ;
            } 
else   if  ((contentType.length()  >=   9 //  Check if html
                     &&  (contentType.toLowerCase().substring( 0 9 )
                            .equals(
" image/gif " ))) {
                fileNameWidthExtension 
=   this .receiverInfo.getAttachmentDir()
                        
+   this .currentEmailFileName  +   " .gif " ;
            } 
else   if  ((contentType.length()  >=   11 )
                    
&&  contentType.toLowerCase().substring( 0 11 ).equals(
                            
" multipart/* " )) {
//                 System.out.println("multipart body: " + contentType);
                handleMultipart((Multipart) part.getContent());
            } 
else  {  //  Unknown type
//                 System.out.println("Other body: " + contentType);
                fileNameWidthExtension  =   this .receiverInfo.getAttachmentDir()
                        
+   this .currentEmailFileName  +   " .txt " ;
            }
            
//  存储内容文件
            System.out.println( " 保存邮件内容到: "   +  fileNameWidthExtension);
            saveFile(fileNameWidthExtension, sbis);

            
return ;
        }

        
//  各种有附件的情况
        String name  =   "" ;
        
if  (disposition.equalsIgnoreCase(Part.ATTACHMENT)) {
            name 
=  getFileName(part);
//             System.out.println("Attachment: " + name + " : "
//                     + contentType);
            fileNameWidthExtension  =   this .receiverInfo.getAttachmentDir()  +  name;
        } 
else   if  (disposition.equalsIgnoreCase(Part.INLINE)) {
            name 
=  getFileName(part);
//             System.out.println("Inline: " + name + " : "
//                     + contentType);
            fileNameWidthExtension  =   this .receiverInfo.getAttachmentDir()  +  name;
        } 
else  {
//             System.out.println("Other: " + disposition);
        }
        
//  存储各类附件
         if  ( ! fileNameWidthExtension.equals( "" )) {
            System.out.println(
" 保存邮件附件到: "   +  fileNameWidthExtension);
            saveFile(fileNameWidthExtension, sbis);
        }
    }
    
private  String getFileName(Part part)  throws  MessagingException,
            UnsupportedEncodingException {
        String fileName 
=  part.getFileName();
        fileName 
=  MimeUtility.decodeText(fileName);
        String name 
=  fileName;
        
if  (fileName  !=   null ) {
            
int  index  =  fileName.lastIndexOf( " / " );
            
if  (index  !=   - 1 ) {
                name 
=  fileName.substring(index  +   1 );
            }
        }
        
return  name;
    }
    
/**
     * 保存文件内容
     * 
@param  fileName    文件名
     * 
@param  input        输入流
     * 
@throws  IOException
     
*/
    
private   void  saveFile(String fileName, Reader input)  throws  IOException {

        
//  为了放置文件名重名,在重名的文件名后面天上数字
        File file  =   new  File(fileName);
        
//  先取得文件名的后缀
         int  lastDot  =  fileName.lastIndexOf( " . " );
        String extension 
=  fileName.substring(lastDot);
        fileName 
=  fileName.substring( 0 , lastDot);
        
for  ( int  i  =   0 ; file.exists(); i ++ ) {
            
//  如果文件重名,则添加i
            file  =   new  File(fileName  +  i  +  extension);
        }
        
//  从输入流中读取数据,写入文件输出流
        FileWriter fos  =   new  FileWriter(file);
        BufferedWriter bos 
=   new  BufferedWriter(fos);
        BufferedReader bis 
=   new  BufferedReader(input);
        
int  aByte;
        
while  ((aByte  =  bis.read())  !=   - 1 ) {
            bos.write(aByte);
        }
        
//  关闭流
        bos.flush();
        bos.close();
        bis.close();
    }

    
/**
     * 获得尖括号之间的字符
     * 
@param  str
     * 
@return
     * 
@throws  Exception
     
*/
    
private  String getInfoBetweenBrackets(String str)  throws  Exception {
        
int  i, j;  // 用于标识字符串中的"<"和">"的位置
         if  (str  ==   null ) {
            str 
=   " error " ;
            
return  str;
        }
        i 
=  str.lastIndexOf( " < " );
        j 
=  str.lastIndexOf( " > " );
        
if  (i  !=   - 1   &&  j  !=   - 1 ){
            str 
=  str.substring(i  +   1 , j);
        }
        
return  str;
    }

    
public   static   void  main(String[] args)  throws  Exception {
        MailReceiverInfo receiverInfo 
=   new  MailReceiverInfo();
        receiverInfo.setMailServerHost(
" pop.163.com " );
        receiverInfo.setMailServerPort(
" 110 " );
        receiverInfo.setValidate(
true );
        receiverInfo.setUserName(
" *** " );
        receiverInfo.setPassword(
" *** " );
        receiverInfo.setAttachmentDir(
" C:/temp/mail/ " );
        receiverInfo.setEmailDir(
" C:/temp/mail/ " );

        MailReceiver receiver 
=   new  MailReceiver(receiverInfo);
        receiver.receiveAllMail();
    }
}


</script>

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