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JavaMail接收邮件篇

 
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JavaMail接收邮件

main class 贴代码:
收邮件是最复杂最难的。
public class CmsMailRecieve {
	 private  MimeMessage mimeMessage = null;   
	    private static String saveAttachPath = ""; //附件下载后的存放目录   
	    private static StringBuffer bodytext = new StringBuffer();//存放邮件内容   
	    private static String dateformat = "yy-MM-dd HH:mm"; //默认的日前显示格式   
	  
	    public CmsMailRecieve(MimeMessage mimeMessage) {   
	        this.mimeMessage = mimeMessage;   
	    }   
	  
	    public void setMimeMessage(MimeMessage mimeMessage) {   
	        this.mimeMessage = mimeMessage;   
	    }   
	  
	    /**  
	     * 获得发件人的地址和姓名  
	     */  
	    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;   
	    }   
	  
	    /**  
	     * 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  
	     */  
	    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;   
	    }   
	  
	    /**  
	     * 获得邮件主题  
	     */  
	    public String getSubject() throws MessagingException {   
	    	String subject =null;
	    	try {   
	            subject = MimeUtility.decodeText(mimeMessage.getSubject());   
	        } catch (Exception exce) {}   
	        return subject;   
	    }   
	  
	    /**  
	     * 获得邮件发送日期  
	     */  
	    public Date getSentDate() throws Exception {   
	        Date sentdate = mimeMessage.getSentDate();   
	        SimpleDateFormat format = new SimpleDateFormat(dateformat);   
	        return sentdate;   
	    }   
	  
	    /**  
	     * 获得邮件正文内容  
	     */  
	    public String getBodyText() {   
	        return bodytext.toString();   
	    }   
	  
	    /**  
	     * 解析邮件,把得到的邮件内容保存到一个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;   
	        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;   
	        }   
	        return replysign;   
	    }   
	  
	    /**  
	     * 获得此邮件的Message-ID  
	     */  
	    public String getMessageId() throws MessagingException {   
	        return 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】  
	     */  
	    public boolean isNew() throws MessagingException {   
	        boolean isnew = false;   
	        Flags flags = ((Message) 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  
	     */  
	    public  boolean isContainAttach(Part part) throws Exception {   
	        boolean attachflag = false;   
	        String contentType = part.getContentType();   
	        if (part.isMimeType("multipart/*")) {   
	            Multipart mp = (Multipart) part.getContent();   
	            for (int i = 0; i < mp.getCount(); i++) {   
	                BodyPart mpart = mp.getBodyPart(i);   
	                String disposition = mpart.getDisposition();   
	                if ((disposition != null)   
	                        && ((disposition.equals(Part.ATTACHMENT)) || (disposition   
	                                .equals(Part.INLINE))))   
	                    attachflag = true;   
	                else if (mpart.isMimeType("multipart/*")) {   
	                    attachflag = isContainAttach((Part) mpart);   
	                } else {   
	                    String contype = mpart.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;   
	    }   
	  
	    /**   
	     * 【保存附件】   
	     */   
	    public  void saveAttachMent(Part part) throws Exception {   
	        String fileName = "";   
	        if (part.isMimeType("multipart/*")) {   
	            Multipart mp = (Multipart) part.getContent();   
	            for (int i = 0; i < mp.getCount(); i++) {   
	                BodyPart mpart = mp.getBodyPart(i);   
	                String disposition = mpart.getDisposition();   
	                if ((disposition != null)   
	                        && ((disposition.equals(Part.ATTACHMENT)) || (disposition   
	                                .equals(Part.INLINE)))) {   
	                    fileName = mpart.getFileName();   
	                    if (fileName.toLowerCase().indexOf("gb2312") != -1) {   
	                        fileName = MimeUtility.decodeText(fileName);   
	                    }   
	                    saveFile(fileName, mpart.getInputStream());   
	                } else if (mpart.isMimeType("multipart/*")) {   
	                    saveAttachMent(mpart);   
	                } else {   
	                    fileName = mpart.getFileName();   
	                    if ((fileName != null)   
	                            && (fileName.toLowerCase().indexOf("GB2312") != -1)) {   
	                        fileName = MimeUtility.decodeText(fileName);   
	                        saveFile(fileName, mpart.getInputStream());   
	                    }   
	                }   
	            }   
	        } else if (part.isMimeType("message/rfc822")) {   
	            saveAttachMent((Part) part.getContent());   
	        }   
	    }   
	  
	    /**   
	     * 【设置附件存放路径】   
	     */   
	  
	    public   void setAttachPath(String attachpath) {   
	       saveAttachPath = attachpath;   
	    }   
	  
	    /**  
	     * 【设置日期显示格式】  
	     */  
	    public void setDateFormat(String format) throws Exception {   
	         dateformat = format;   
	    }   
	  
	    /**  
	     * 【获得附件存放路径】  
	     */  
	    public  String getAttachPath() {   
	        return saveAttachPath;   
	    }   
	  
	    /**  
	     * 【真正的保存附件到指定目录里】  
	     */  
	    private  void saveFile(String fileName, InputStream in) throws Exception {   
	        String osName = System.getProperty("os.name");   
	        String storedir = getAttachPath();   
	        String separator = "";   
//	        if (osName == null)   
//	            osName = "";   
//	        if (osName.toLowerCase().indexOf("win") != -1) {   
//	            separator = "\\";  
//	            if (storedir == null || storedir.equals(""))  
//	                storedir = "c:\\tmp";  
//	        } else {  
//	            separator = "/";  
//	            storedir = "/tmp";  
//	        }  
	        
	        File storefile = new File(storedir + separator + fileName);  
	         for(int i=0;storefile.exists();i++){  
	         storefile = new File(storedir+separator+fileName+i);  
	         }  
	        BufferedOutputStream bos = null;  
	        BufferedInputStream bis = null;  
	        try {  
	            bos = new BufferedOutputStream(new FileOutputStream(storefile));  
	            bis = new BufferedInputStream(in);  
	            int c;  
	            while ((c = bis.read()) != -1) {  
	                bos.write(c);  
	                bos.flush();  
	            }  
	        } catch (Exception exception) {  
	            exception.printStackTrace();  
	            throw new Exception("文件保存失败!");  
	        } finally {  
	            bos.close();  
	            bis.close();  
	        }  
	    }  
	 
	    /**  
	     * PraseMimeMessage类测试  
	     */  
	    public static void main(String args[]) throws Exception {  
	        Properties props = System.getProperties();  
//	        props.put("mail.smtp.host", "192.168.0.212");   
	        props.put("mail.smtp.host", "smtp.163.com");   
	        props.put("mail.smtp.auth", "true");   
	        Session session = Session.getDefaultInstance(props, null);   
 
	        URLName urln = new URLName("pop3", "pop.163.com", 110, null,"xx@163.com", "123456");   
//	        URLName urln = new URLName("pop3", "192.168.0.212", 110, null,"vincent@jeecms.com", "password");   
	        Store store = session.getStore(urln);  
	        store.connect();  
	        Folder folder = store.getFolder("INBOX");  
	        folder.open(Folder.READ_ONLY);  
	        Message message[] = folder.getMessages();  
	        System.out.println("Messages's length: " + message.length);  
	        CmsMailRecieve pmm = null;  
	        for (int i = 0; i < message.length; i++) {  
	            System.out.println("======================");  
	            pmm = new CmsMailRecieve((MimeMessage) message[i]);  
	            System.out.println("Message " + i + " subject: " + pmm.getSubject());  
	            System.out.println("Message " + i + " sentdate: "+ pmm.getSentDate());  
	            System.out.println("Message " + i + " replysign: "+ pmm.getReplySign());  
	            System.out.println("Message " + i + " hasRead: " + pmm.isNew());  
	            System.out.println("Message " + i + "  containAttachment: "+ pmm.isContainAttach((Part) message[i]));  
	            System.out.println("Message " + i + " form: " + pmm.getFrom());  
	            System.out.println("Message " + i + " to: "+ pmm.getMailAddress("to"));  
	            System.out.println("Message " + i + " cc: "+ pmm.getMailAddress("cc"));  
	            System.out.println("Message " + i + " bcc: "+ pmm.getMailAddress("bcc"));  
	            System.out.println("Message " + i + " size: "+ message[i].getSize());  
	            pmm.setDateFormat("yy年MM月dd日 HH:mm");  
	            System.out.println("Message " + i + " sentdate: "+ pmm.getSentDate());  
	            System.out.println("Message " + i + " Message-ID: "+ pmm.getMessageId());  
	            // 获得邮件内容===============  
	            pmm.getMailContent((Part) message[i]);  
	            System.out.println("Message " + i + " bodycontent: \r\n" + pmm.getBodyText()+"----");  
	            pmm.setAttachPath("c:\\");   
	            pmm.saveAttachMent((Part) message[i]);   
	        }   
	    }   
	}  





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