android pop3与imap方式接收邮件（javamail）

需要下载3个jar包：mail.jar/    activation.jar/    additionnal.jar

1.pop3

/**  * 以pop3方式读取邮件，此方法不能读取邮件是否为已读，已经通过测试  * */  
private void getEmail() {  List<Map<String, Object>> list = new ArrayList<Map<String, Object>>();  try {  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,  "邮箱名（没有@163.com）", "密码");  // 邮件协议为pop3，邮件服务器是pop3.163.com，端口为110，用户名/密码为abcw111222/123456w  Store store = session.getStore(urln);  store.connect();  Folder folder = store.getFolder("INBOX");  folder.open(Folder.READ_WRITE);  Message message[] = folder.getMessages();  if (message.length > 0) {  Map<String, Object> map;  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());  boolean isRead = pmm.isNew();// 判断邮件是否为已读  System.out.println("Message " + i + " hasRead: " + isRead);  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());  String file_path = File.separator + "mnt" + File.separator  + "sdcard" + File.separator;  System.out.println(file_path);  pmm.setAttachPath(file_path);  pmm.saveAttachMent((Part) message[i]);  map = new HashMap<String, Object>();  map.put("from", pmm.getFrom());  map.put("title", pmm.getSubject());  map.put("time", pmm.getSentDate());  map.put("read", isRead);  list.add(map);  }  SimpleAdapter adapter = new SimpleAdapter(MainActivity.this,  list, R.layout.item_receiveemail, new String[] {  "from", "title", "time", "read" }, new int[] {  R.id.item_receive_sendname,  R.id.item_receive_title,  R.id.item_receive_sendtime,  R.id.item_receive_read });  lv.setAdapter(adapter);  } else {  Toast.makeText(MainActivity.this, "没有邮件", Toast.LENGTH_SHORT)  .show();  }  } catch (NoSuchProviderException e) {  // TODO Auto-generated catch block  
        e.printStackTrace();  } catch (MessagingException e) {  // TODO Auto-generated catch block  
        e.printStackTrace();  } catch (Exception e) {  // TODO Auto-generated catch block  
        e.printStackTrace();  }  
}  

2.imap方式

/**  * 以imap方式读取邮件，可以判定读取邮件是否为已读  * */  
private void getImapEmail() {  String user = "abcw111222@163.com";// 邮箱的用户名  String password = "123456w"; // 邮箱的密码  
  Properties prop = System.getProperties();  prop.put("mail.store.protocol", "imap");  prop.put("mail.imap.host", "imap.163.com");  Session session = Session.getInstance(prop);  int total = 0;  IMAPStore store;  try {  store = (IMAPStore) session.getStore("imap"); // 使用imap会话机制，连接服务器  
  store.connect(user, password);  IMAPFolder folder = (IMAPFolder) store.getFolder("INBOX"); // 收件箱  
        folder.open(Folder.READ_WRITE);  // 获取总邮件数  total = folder.getMessageCount();  System.out.println("---共有邮件：" + total + " 封---");  // 得到收件箱文件夹信息，获取邮件列表  List<Map<String, Object>> list = new ArrayList<Map<String, Object>>();  System.out.println("未读邮件数：" + folder.getUnreadMessageCount());  Message[] messages = folder.getMessages();  if (messages.length > 0) {  Map<String, Object> map;  System.out.println("Messages's length: " + messages.length);  ReciveOneMail pmm = null;  for (int i = 0; i < messages.length; i++) {  System.out.println("======================");  pmm = new ReciveOneMail((MimeMessage) messages[i]);  System.out.println("Message " + i + " subject: "  + pmm.getSubject());  try {  System.out.println("Message " + i + " sentdate: "  + pmm.getSentDate());  System.out.println("Message " + i + " replysign: "  + pmm.getReplySign());  boolean isRead;// 用来判断该邮件是否为已读  
                    String read;  Flags flags = messages[i].getFlags();  if (flags.contains(Flags.Flag.SEEN)) {  System.out.println("这是一封已读邮件");  isRead = true;  read = "已读";  } else {  System.out.println("未读邮件");  isRead = false;  read = "未读";  }  System.out.println("Message " + i + " hasRead: "  + isRead);  System.out.println("Message " + i  + "  containAttachment: "  + pmm.isContainAttach((Part) messages[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) messages[i]);  System.out.println("Message " + i  + " bodycontent: \r\n" + pmm.getBodyText());  String file_path = File.separator + "mnt"  + File.separator + "sdcard" + File.separator;  System.out.println(file_path);  pmm.setAttachPath(file_path);  pmm.saveAttachMent((Part) messages[i]);  map = new HashMap<String, Object>();  map.put("from", pmm.getFrom());  map.put("title", pmm.getSubject());  map.put("time", pmm.getSentDate());  map.put("read", read);  list.add(map);  } catch (Exception e) {  // TODO Auto-generated catch block  
                    e.printStackTrace();  }  }  SimpleAdapter adapter = new SimpleAdapter(MainActivity.this,  list, R.layout.item_receiveemail, new String[] {  "from", "title", "time", "read" }, new int[] {  R.id.item_receive_sendname,  R.id.item_receive_title,  R.id.item_receive_sendtime,  R.id.item_receive_read });  lv.setAdapter(adapter);  }  } catch (javax.mail.NoSuchProviderException e) {  // TODO Auto-generated catch block  
        e.printStackTrace();  } catch (MessagingException e) {  // TODO Auto-generated catch block  
        e.printStackTrace();  }  }  

下面为用到的一个类，用来读取除了判断是否已读的信息之外的内容

/**  * 接收邮箱中的邮件，可以接收带附件的  * （目前接收的邮件中含有中文内容，会出现乱码，但是标题不会乱码）  * 邮件中的内容如果用专门的阅读器也不会出现乱码现象，图片等都可以下载  * */  
@SuppressLint("DefaultLocale")  
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  */  @SuppressLint("DefaultLocale")  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  */  @SuppressLint("SimpleDateFormat")  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】pop3协议使用时不能判断。  */  public boolean isNew() throws MessagingException {  boolean isnew = false;//由于isnew设为false所以每次显示的都为未读  Flags flags = ((Message) mimeMessage).getFlags();  System.out.println("--------flags-------" + flags);  Flags.Flag[] flag = flags.getSystemFlags();  System.out.println("----flag----" + flag);  System.out.println("flags's length: " + flag.length);  for (int i = 0; i < flag.length; i++) {  System.out.println("flag=======" + flag[i]);  System.out.println("-=-=-=Flags.Flag.SEEN=-=-=-="+Flags.Flag.SEEN);  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  */  @SuppressLint("DefaultLocale")  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】  */  @SuppressLint("DefaultLocale")  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);//主体部分得到处理  String disposition = mpart.getDisposition();  if ((disposition != null)  && ((disposition.equals(Part.ATTACHMENT)) || (disposition  .equals(Part.INLINE)))) {//ATTACHMENT附件，INLINE嵌入  fileName = mpart.getFileName();  if (fileName.toLowerCase().indexOf("gb18030") != -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("GB18030") != -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】  */  @SuppressLint("DefaultLocale")  private void saveFile(String fileName, InputStream in) throws Exception {  String osName = System.getProperty("os.name");  System.out.println("----fileName----" + fileName);  // String storedir = getAttachPath();  
//      String separator = "";  if (osName == null)  osName = "";  File storefile = new File(File.separator + "mnt" + File.separator  + "sdcard" + File.separator + fileName);  storefile.createNewFile();  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();  }  }  
}