javamail接收邮件(较全)

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]);

}

}

}