JavaMail解析邮件内容详解编程语言

    import java.io.*;       
import java.text.*;       
import java.util.*;       
import javax.mail.*;       
import javax.mail.internet.*;       
/**     
* 有一封邮件就需要建立一个ReciveMail对象     
*/      
public class ReciveOneMail {       
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       
private String dateformat = "yy-MM-dd HH:mm"; //默认的日前显示格式       
public ReciveOneMail(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 = "";       
try {       
subject = MimeUtility.decodeText(mimeMessage.getSubject());       
if (subject == null)       
subject = "";       
} catch (Exception exce) {}       
return subject;       
}       
/**     
* 获得邮件发送日期     
*/      
public String getSentDate() throws Exception {       
Date sentdate = mimeMessage.getSentDate();       
SimpleDateFormat format = new SimpleDateFormat(dateformat);       
return format.format(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;       
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;       
}       
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();       
System.out.println("flags's length: " + flag.length);       
for (int i = 0; i < flag.length; i++) {       
if (flag[i] == Flags.Flag.SEEN) {       
isnew = true;       
System.out.println("seen Message.......");       
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) {       
this.saveAttachPath = attachpath;       
}       
/**     
* 【设置日期显示格式】     
*/      
public void setDateFormat(String format) throws Exception {       
this.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);      
System.out.println("storefile's path: " + storefile.toString());      
// 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", "smtp.163.com");      
props.put("mail.smtp.auth", "true");      
Session session = Session.getDefaultInstance(props, null);      
URLName urln = new URLName("pop3", "pop3.163.com", 110, null,      
"xiangzhengyan", "pass");      
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);      
ReciveOneMail pmm = null;      
for (int i = 0; i < message.length; i++) {      
System.out.println("======================");      
pmm = new ReciveOneMail((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"));      
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]);       
}       
}       
}