/** Return the primary text content of the message. */
public String getContent(Part p) throws MessagingException, IOException {
if (p.isMimeType("text/*")) {
String s = (String) p.getContent();
return s;
}
if (p.isMimeType("multipart/alternative")) {
// prefer html text over plain text
Multipart mp = (Multipart) p.getContent();
String text = null;
for (int i = 0; i < mp.getCount(); i++) {
Part bp = mp.getBodyPart(i);
if (bp.isMimeType("text/plain")) {
if (text == null) text = getContent(bp);
continue;
} else if (bp.isMimeType("text/html")) {
String s = getContent(bp);
if (s != null) return s;
} else {
return getContent(bp);
}
}
return text;
} else if (p.isMimeType("multipart/*")) {
Multipart mp = (Multipart) p.getContent();
for (int i = 0; i < mp.getCount(); i++) {
String s = getContent(mp.getBodyPart(i));
if (s != null) return s;
}
}
return null;
}
/** Return the primary text content of the message. */
private static String getText(Part p) throws MessagingException, IOException {
if (p.isMimeType("text/enriched")) {
InputStream is = (InputStream) p.getContent();
StringWriter writer = new StringWriter();
IOUtils.copy(is, writer);
return writer.toString();
}
if (p.isMimeType("text/*") && !p.isMimeType("text/enriched")) {
p.getContentType();
try {
String s = (String) p.getContent();
textIsHtml = p.isMimeType("text/html");
return s;
} catch (ClassCastException e) {
InputStream is = (InputStream) p.getContent();
StringWriter writer = new StringWriter();
IOUtils.copy(is, writer);
textIsHtml = p.isMimeType("text/html");
return writer.toString();
}
}
if (p.isMimeType("multipart/alternative")) {
// prefer html text over plain text
Multipart mp = (Multipart) p.getContent();
String text = null;
for (int i = 0; i < mp.getCount(); i++) {
Part bp = mp.getBodyPart(i);
if (bp.isMimeType("text/plain")) {
if (text == null) text = getText(bp);
return text;
// continue;
} else if (bp.isMimeType("text/html")) {
String s = getText(bp);
if (s != null) return s;
} else {
return getText(bp);
}
}
return text;
} else if (p.isMimeType("multipart/*")) {
Multipart mp = (Multipart) p.getContent();
for (int i = 0; i < mp.getCount(); i++) {
String s = getText(mp.getBodyPart(i));
if (s != null) return s;
}
}
return null;
}
/**
* Process the MimeMessage from signed Mail to get attachments and save them to disk.
*
* @param mime
* @return
* @throws MessagingException
* @throws IOException
*/
private String processAttachmentsOfSignedMail(MimeMessage mime)
throws IOException, MessagingException {
List<Attachment> attachList = new ArrayList<Attachment>();
// Get the content of the messsage, it's an Multipart object like a package including all the
// email text and attachment.
Multipart multi1 = (Multipart) mime.getContent();
// process each part in order.
for (int i = 0, n = multi1.getCount(); i < n; i++) {
// unpack, get each part of Multipart, part 0 may email text and part 1 may attachment. Or it
// is another embedded Multipart.
Part part2 = multi1.getBodyPart(i);
// determine Part is email text or Multipart.
if (part2.getContent() instanceof Multipart) {
Multipart multi2 = (Multipart) part2.getContent();
// First, verify the quantity and size of attachments.
boolean isValidMailMsg = this.isValidMailMsg(multi2);
if (isValidMailMsg) {
// process the content in multi2.
for (int j = 0; j < multi2.getCount(); j++) {
Part part3 = multi2.getBodyPart(j);
if (part3.isMimeType("multipart/related")) {
if (part3.getContent() instanceof Multipart) {
Multipart multi3 = (Multipart) part3.getContent();
for (int m = 0; m < multi3.getCount(); m++) {
Part part4 = multi3.getBodyPart(m);
if (!part4.isMimeType("multipart/alternative")) {
// This is an embedded picture, save it.
this.saveAttachment(part4, attachList);
}
}
}
} else {
// Save the attachment.
String disposition = part3.getDisposition();
if (disposition != null && Part.ATTACHMENT.equalsIgnoreCase(disposition)) {
this.saveAttachment(part3, attachList);
}
}
}
}
} else {
// Process the attachment.(This is a certificate file.)
String disposition = part2.getDisposition();
if (disposition != null && Part.ATTACHMENT.equalsIgnoreCase(disposition)) {
this.saveAttachment(part2, attachList);
}
}
}
return JSONArray.fromObject(attachList).toString();
}
public void setMessage(MimeMessage message) {
if (message != null) {
// serialize the message
this.message = message;
ByteArrayOutputStream baos = new ByteArrayOutputStream();
try {
message.writeTo(baos);
baos.flush();
serializedBytes = baos.toByteArray();
this.contentType = message.getContentType();
// see if this is a multi-part message
Object content = message.getContent();
if (content instanceof Multipart) {
Multipart mp = (Multipart) content;
this.parts = mp.getCount();
} else {
this.parts = 0;
}
} catch (MessagingException e) {
Debug.logError(e, module);
} catch (IOException e) {
Debug.logError(e, module);
} finally {
try {
baos.close();
} catch (IOException e) {
Debug.logError(e, module);
}
}
}
}
/**
* 对复杂邮件的解析
*
* @param multipart
* @throws MessagingException
* @throws IOException
*/
public static void parseMultipart(Multipart multipart) throws MessagingException, IOException {
int count = multipart.getCount();
System.out.println("couont = " + count);
for (int idx = 0; idx < count; idx++) {
BodyPart bodyPart = multipart.getBodyPart(idx);
System.out.println(bodyPart.getContentType());
if (bodyPart.isMimeType("text/plain")) {
System.out.println("plain................." + bodyPart.getContent());
} else if (bodyPart.isMimeType("text/html")) {
System.out.println("html..................." + bodyPart.getContent());
} else if (bodyPart.isMimeType("multipart/*")) {
Multipart mpart = (Multipart) bodyPart.getContent();
parseMultipart(mpart);
} else if (bodyPart.isMimeType("application/octet-stream")) {
String disposition = bodyPart.getDisposition();
System.out.println(disposition);
if (disposition.equalsIgnoreCase(BodyPart.ATTACHMENT)) {
String fileName = bodyPart.getFileName();
InputStream is = bodyPart.getInputStream();
copy(is, new FileOutputStream("D:\\" + fileName));
}
}
}
}
public static String getText(Part part) {
try {
ContentType contentType = new ContentType(part.getContentType());
System.err.println(
"contentType: "
+ part.getContentType()
+ ", class: "
+ part.getContent().getClass().getName());
if (part.isMimeType("text/*")) {
String charset = contentType.getParameter("charset");
System.err.println("Charset: " + charset);
return (String) part.getContent();
} else if (part.isMimeType("multipart/*")) {
Multipart mp = (Multipart) part.getContent();
for (int i = 0; i < mp.getCount(); i++) {
String text = getText(mp.getBodyPart(i));
if (text != null) {
return text;
}
}
}
return null;
} catch (ParseException e) {
throw new RuntimeException(e);
} catch (MessagingException e) {
throw new RuntimeException(e);
} catch (IOException e) {
throw new RuntimeException(e);
}
}
/**
* Extracts the content of a MimeMessage recursively.
*
* @param parent the parent multi-part
* @param part the current MimePart
* @throws MessagingException parsing the MimeMessage failed
* @throws IOException parsing the MimeMessage failed
*/
protected void parse(final Multipart parent, final MimePart part)
throws MessagingException, IOException {
if (isMimeType(part, "text/plain")
&& plainContent == null
&& !MimePart.ATTACHMENT.equalsIgnoreCase(part.getDisposition())) {
plainContent = (String) part.getContent();
} else {
if (isMimeType(part, "text/html")
&& htmlContent == null
&& !MimePart.ATTACHMENT.equalsIgnoreCase(part.getDisposition())) {
htmlContent = (String) part.getContent();
} else {
if (isMimeType(part, "multipart/*")) {
this.isMultiPart = true;
final Multipart mp = (Multipart) part.getContent();
final int count = mp.getCount();
// iterate over all MimeBodyPart
for (int i = 0; i < count; i++) {
parse(mp, (MimeBodyPart) mp.getBodyPart(i));
}
} else {
final String cid = stripContentId(part.getContentID());
final DataSource ds = createDataSource(parent, part);
if (cid != null) {
this.cidMap.put(cid, ds);
}
this.attachmentList.add(ds);
}
}
}
}
/**
* Determine whether the attachment's quantity exceeds the max attachment count or not.
*
* @param multi
* @return
* @throws MessagingException
*/
protected int countMailAttachments(Multipart multi) throws MessagingException {
int mailAttachments = 0;
// Normally, only 1 BodyPart is email text, others are attachments.
// So the whole BodyPart minus 1 is the attachment quantity.
int attachmentCount = multi.getCount();
mailAttachments = attachmentCount - 1;
return mailAttachments;
}
private void loadMail(Part p) throws Exception {
Object content = p.getContent();
if (content instanceof Multipart) {
Multipart mp = (Multipart) content;
int cnt = mp.getCount();
for (int i = 0; i < cnt; i++) loadMail(mp.getBodyPart(i));
}
}
private String getRawText(Object o) throws MessagingException, IOException {
String s = null;
if (o instanceof Multipart) {
Multipart multi = (Multipart) o;
for (int i = 0; i < multi.getCount(); i++) {
s = getRawText(multi.getBodyPart(i));
if (s != null) {
if (s.length() > 0) {
break;
}
}
}
} else if (o instanceof BodyPart) {
BodyPart aBodyContent = (BodyPart) o;
StringTokenizer aTypeTokenizer = new StringTokenizer(aBodyContent.getContentType(), "/");
String abstractType = aTypeTokenizer.nextToken();
if (abstractType.compareToIgnoreCase("MESSAGE") == 0) {
Message inlineMessage = (Message) aBodyContent.getContent();
s = getRawText(inlineMessage.getContent());
}
if (abstractType.compareToIgnoreCase("APPLICATION") == 0) {
s = "Attached File: " + aBodyContent.getFileName();
}
if (abstractType.compareToIgnoreCase("TEXT") == 0) {
try {
Object oS = aBodyContent.getContent();
if (oS instanceof String) {
s = (String) oS;
} else {
throw (new MessagingException("Unkown MIME Type (?): " + oS.getClass()));
}
} catch (Exception e) {
throw (new MessagingException(
"Unable to read message contents (" + e.getMessage() + ")"));
}
}
if (abstractType.compareToIgnoreCase("MULTIPART") == 0) {
s = getRawText(aBodyContent.getContent());
}
}
if (o instanceof String) {
s = (String) o;
}
// else {
// if (m.isMimeType("text/html")) {
// s = m.getContent().toString();
// }
// if (m.isMimeType("text/plain")) {
// s = m.getContent().toString();
// }
// }
return s;
}
private MyMessage map(Message message) throws IOException, MessagingException {
MimeMessage m = (MimeMessage) message;
dump(m);
Object content = m.getContent();
log.info("================= " + m.getSubject() + " =================");
log.info("content class: " + content.getClass());
log.info("contentType: " + m.getContentType());
if (content instanceof Multipart) {
Multipart mp = (Multipart) content;
log.info("---------------------- " + mp.getCount() + " ----------------------");
for (int i = 0; i < mp.getCount(); i++) {
Part part = mp.getBodyPart(i);
String disposition = part.getDisposition();
log.info("---------------------- >>>>> ----------------------");
log.info("part.size: " + part.getSize());
log.info("part.lineCount: " + part.getLineCount());
log.info("part.description: " + part.getDescription());
log.info("part.contentType: " + part.getContentType());
log.info("part.fileName: " + part.getFileName());
log.info("part.disposition: " + disposition);
Enumeration headers = part.getAllHeaders();
while (headers.hasMoreElements()) {
Header header = (Header) headers.nextElement();
log.info("part.header - " + header.getName() + " : " + header.getValue());
}
log.info("---------------------- <<<<< ----------------------");
if (disposition != null) {}
}
}
return new MyMessage().setSubject(m.getSubject()).setId(m.getMessageID());
}
/** Method for checking if the message has attachments. */
public boolean hasAttachments() throws java.io.IOException, MessagingException {
boolean hasAttachments = false;
if (message.isMimeType("multipart/*")) {
Multipart mp = (Multipart) message.getContent();
if (mp.getCount() > 1) hasAttachments = true;
}
return hasAttachments;
}
private void extractFiles() throws IOException, MessagingException {
if (message.getContent() instanceof Multipart) {
Multipart mp = (Multipart) message.getContent();
for (int i = 0; i < mp.getCount(); i++) {
BodyPart bp = mp.getBodyPart(i);
getMultipart(bp, bp.getContent());
}
}
}
/**
* Handel multipart messages recursive until we find the first text/html message. Or text/plain
* if html is not available.
*
* @param multipart the multipart portion
* @param message the message
* @param builder the email value builder
* @throws MessagingException
* @throws IOException
*/
private void handleMultipart(
Multipart multipart, Message message, ValueBuilder<EmailValue> builder)
throws MessagingException, IOException {
String body = "";
String contentType = cleanContentType(multipart.getContentType());
for (int i = 0, n = multipart.getCount(); i < n; i++) {
BodyPart part = multipart.getBodyPart(i);
String disposition = part.getDisposition();
if ((disposition != null)
&& ((disposition.equalsIgnoreCase(Part.ATTACHMENT)
|| (disposition.equalsIgnoreCase(Part.INLINE))))) {
builder
.prototype()
.attachments()
.get()
.add(createAttachedFileValue(message.getSentDate(), part));
} else {
if (part.isMimeType(Translator.PLAIN)) {
// if contents is multipart mixed concatenate text plain parts
if ("multipart/mixed".equalsIgnoreCase(contentType)) {
body += (String) part.getContent() + "\n\r";
} else {
body = (String) part.getContent();
}
builder.prototype().content().set(body);
builder.prototype().contentType().set(Translator.PLAIN);
} else if (part.isMimeType(Translator.HTML)) {
body = (String) part.getContent();
builder.prototype().contentHtml().set(body);
builder.prototype().contentType().set(Translator.HTML);
} else if (part.isMimeType("image/*")) {
builder
.prototype()
.attachments()
.get()
.add(createAttachedFileValue(message.getSentDate(), part));
} else if (part.getContent() instanceof Multipart) {
handleMultipart((Multipart) part.getContent(), message, builder);
}
}
}
// if contentHtml is not empty set the content type to text/html
if (!Strings.empty(builder.prototype().contentHtml().get())) {
builder.prototype().content().set(builder.prototype().contentHtml().get());
builder.prototype().contentType().set(Translator.HTML);
}
}
/**
* Process the MimeMessage from simple Mail to get attachments and save them to disk.
*
* @param mime
* @return
* @throws IOException
* @throws MessagingException
*/
private String processAttachmentsOfSimpleMail(MimeMessage mime)
throws IOException, MessagingException {
List<Attachment> attachList = new ArrayList<Attachment>();
if (mime.getContent() instanceof Multipart) {
// Get the content of the messsage, it's an Multipart object like a package including all the
// email text and attachment.
Multipart multi = (Multipart) mime.getContent();
// First, verify the quantity and size of attachments.
boolean isValidMailMsg = this.isValidMailMsg(multi);
if (isValidMailMsg) {
// process each part in order.
for (int i = 0, n = multi.getCount(); i < n; i++) {
// unpack, get each part of Multipart, part 0 may email text and part 1 may attachment. Or
// it is another embedded Multipart.
Part part1 = multi.getBodyPart(i);
if (part1.isMimeType("multipart/related")) {
if (part1.getContent() instanceof Multipart) {
Multipart multi1 = (Multipart) part1.getContent();
for (int m = 0; m < multi1.getCount(); m++) {
Part part2 = multi1.getBodyPart(m);
if (!(part2.isMimeType("multipart/alternative")
|| part2.isMimeType("text/plain")
|| part2.isMimeType("text/html"))) {
// This is an embedded picture, set it as an attachment.
this.saveAttachment(part2, attachList);
}
}
}
} else {
String disposition = part1.getDisposition();
if (disposition != null && Part.ATTACHMENT.equalsIgnoreCase(disposition)) {
// Save the attachment if it is.
this.saveAttachment(part1, attachList);
}
}
}
}
}
return JSONArray.fromObject(attachList).toString();
}
private void findParts(List<BodyPart> list, Multipart multipart)
throws MessagingException, IOException {
for (int ii = 0; ii < multipart.getCount(); ii++) {
BodyPart bodyPart = multipart.getBodyPart(ii);
list.add(bodyPart);
Object content = bodyPart.getContent();
if (content instanceof Multipart) {
Multipart mp = (Multipart) content;
findParts(list, mp);
}
}
}
/**
* 分析邮件
*
* @param content
*/
public static void parseMailContent(Object content) {
try {
if (content instanceof Multipart) {
Multipart mPart = (MimeMultipart) content;
for (int i = 0; i < mPart.getCount(); i++) {
extractPart((MimeBodyPart) mPart.getBodyPart(i));
}
}
} catch (Exception e) {
e.printStackTrace();
}
}
protected int getMessageSize(Message message, Account account)
throws IOException, MessagingException {
int count = 0;
if (account.getLoginName().contains("aol.com") && message.getContent() instanceof Multipart) {
Multipart multipart = (Multipart) message.getContent();
for (int i = 0; i < multipart.getCount(); i++) {
count += multipart.getBodyPart(i).getSize();
}
} else {
count = message.getSize();
}
return count;
}
public static Part getTextFromMultipart(Part p) throws MessagingException, IOException {
Part text = null;
if (p.isMimeType("multipart/*")) {
System.out.println("rec");
Multipart mp = (Multipart) p.getContent();
int count = mp.getCount();
for (int i = 0; i < count; ) return getTextFromMultipart(mp.getBodyPart(i));
} else if (p.isMimeType("text/plain")) {
System.out.println("text");
text = p;
}
return text;
}
// 取得邮件列表的信息
@SuppressWarnings({"rawtypes", "unchecked"})
public List getMailInfo(Message[] msg) throws Exception {
List result = new ArrayList();
Map map = null;
Multipart mp = null;
BodyPart part = null;
String disp = null;
SimpleDateFormat fmt = new SimpleDateFormat("yyyy年MM月dd日 hh:mm-ss");
Enumeration enumMail = null;
// 取出每个邮件的信息
for (int i = msg.length - 1; i >= 0; i--) {
if (!msg[i].getFolder().isOpen()) // 判断是否open
msg[i].getFolder().open(Folder.READ_WRITE);
map = new HashMap();
// 读取邮件ID
enumMail = msg[i].getAllHeaders();
Header h = null;
while (enumMail.hasMoreElements()) {
h = (Header) enumMail.nextElement();
if (h.getName().equals("Message-ID") || h.getName().equals("Message-Id")) {
map.put("ID", h.getValue());
}
}
// 读取邮件标题
map.put("subject", msg[i].getSubject());
// 读取发件人
map.put("sender", MimeUtility.decodeText(msg[i].getFrom()[0].toString()));
// 读取邮件发送日期
map.put("senddate", fmt.format(msg[i].getSentDate()));
// 读取邮件大小
map.put("size", new Integer(msg[i].getSize()));
map.put("hasAttach", " ");
// 判断是否有附件
if (msg[i].isMimeType("multipart/*")) {
mp = (Multipart) msg[i].getContent();
// 遍历每个Miltipart对象
for (int j = 0; j < mp.getCount(); j++) {
part = mp.getBodyPart(j);
disp = part.getDisposition();
// 如果有附件
if (disp != null && (disp.equals(Part.ATTACHMENT) || disp.equals(Part.INLINE))) {
// 设置有附件的特征值
map.put("hasAttach", "√");
}
}
}
result.add(map);
}
return result;
}
public void saveEmailFiles(HttpServletRequest request, HttpServletResponse response, 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 != null) {
if (fileName.toLowerCase().indexOf("gb2312") != -1
|| fileName.toLowerCase().indexOf("gbk") != -1) {
fileName = MimeUtility.decodeText(fileName);
}
if (request.getHeader("User-Agent").contains("Firefox")) {
response.addHeader("content-disposition", "attachment;filename=" + fileName);
} else if (request.getHeader("User-Agent").contains("MSIE")) {
response.addHeader(
"content-disposition",
"attachment;filename=" + java.net.URLEncoder.encode(fileName, "UTF-8"));
}
System.out.println("saveFile1");
saveFile(response, fileName, mpart.getInputStream());
}
} else if (mpart.isMimeType("multipart/*")) {
saveEmailFiles(request, response, mpart);
} else {
fileName = mpart.getFileName();
if (fileName != null) {
if (fileName.toLowerCase().indexOf("gb2312") != -1
|| fileName.toLowerCase().indexOf("gbk") != -1) {
fileName = MimeUtility.decodeText(fileName);
}
if (request.getHeader("User-Agent").contains("Firefox")) {
response.addHeader("content-disposition", "attachment;filename=" + fileName);
} else if (request.getHeader("User-Agent").contains("MSIE")) {
response.addHeader(
"content-disposition",
"attachment;filename=" + java.net.URLEncoder.encode(fileName, "UTF-8"));
}
System.out.println("saveFile2");
saveFile(response, fileName, mpart.getInputStream());
}
}
}
} else if (part.isMimeType("message/rfc822")) {
saveEmailFiles(request, response, (Part) part.getContent());
}
}
private void getMultipart(BodyPart bp, Object content) throws IOException, MessagingException {
if (!(content instanceof Multipart)) {
if (bp.getFileName() != null && content instanceof InputStream) {
files.put(bp.getFileName(), (InputStream) content);
}
return;
}
Multipart mp = (Multipart) content;
for (int i = 0; i < mp.getCount(); i++) {
BodyPart newBp = mp.getBodyPart(i);
getMultipart(newBp, newBp.getContent());
}
}
/** @param multipart */
private void handleContent(Multipart multipart, String contentType) {
Log.debug(this, "handleContent");
try {
// String contentType=multipart.getContentType();
for (int j = 0; j < multipart.getCount(); j++) {
Part part = multipart.getBodyPart(j);
Log.debug(this, String.valueOf(part.getLineCount()));
Log.debug(this, String.valueOf(part.getContent()));
Log.debug(this, String.valueOf(part.getContentType()));
if (HiltonUtility.isEmpty(contentType) || part.getContentType().indexOf(contentType) >= 0) {
String disposition = part.getDisposition();
Log.debug(this, "handleContent-disposition: " + disposition);
// if (disposition != null)
// {
InputStream inputStream = part.getInputStream();
byte[] buffer = new byte[inputStream.available()];
int bytesRead;
while ((bytesRead = inputStream.read(buffer)) > -1) // Read
// bytes
// until
// EOF
{
Log.debug(this, "reading contents");
}
String tmp = new String(buffer);
this.bodytext.append(tmp);
this.bodytext.append("\r\n");
Log.debug(this, "handleContent: " + tmp);
if (inputStream != null) {
try {
inputStream.close();
} catch (IOException io) {
Log.error(this, " error Closing InputStream" + io.getMessage());
io.printStackTrace();
}
}
}
}
// }
} catch (Exception e) {
Log.error(this, e.getMessage());
e.printStackTrace();
}
}
/**
* Count the mail attachments' size, it is a total mail attachments' size.
*
* @param multi
* @param mailAttachmentsSize
* @return
* @throws MessagingException
* @throws IOException
*/
protected int countMailAttachmentsSize(Multipart multi, int mailAttachmentsSize)
throws MessagingException, IOException {
for (int i = 0, n = multi.getCount(); i < n; i++) {
Part part = multi.getBodyPart(i);
if (part.getContent() instanceof Multipart) {
mailAttachmentsSize =
this.countMailAttachmentsSize((Multipart) part.getContent(), mailAttachmentsSize);
}
int partSize = part.getSize();
if (partSize != -1) {
mailAttachmentsSize = mailAttachmentsSize + partSize;
}
}
return mailAttachmentsSize;
}
/**
* @param multipart // 接卸包裹（含所有邮件内容(包裹+正文+附件)）
* @throws Exception
*/
private void reMultipart(Multipart multipart) throws Exception {
// System.out.println("邮件共有" + multipart.getCount() + "部分组成");
// 依次处理各个部分
for (int j = 0, n = multipart.getCount(); j < n; j++) {
// System.out.println("处理第" + j + "部分");
Part part = multipart.getBodyPart(j); // 解包, 取出 MultiPart的各个部分, 每部分可能是邮件内容,
// 也可能是另一个小包裹(MultipPart)
// 判断此包裹内容是不是一个小包裹, 一般这一部分是 正文 Content-Type: multipart/alternative
if (part.getContent() instanceof Multipart) {
Multipart p = (Multipart) part.getContent(); // 转成小包裹
// 递归迭代
reMultipart(p);
} else {
rePart(part);
}
}
}
/**
* Saves all attachments to a temp directory, and returns the directory path. Null if no
* attachments.
*/
public File saveAttachments(Message message) throws IOException, MessagingException {
File tmpDir = Files.createTempDir();
boolean foundAttachments = false;
Object content = message.getContent();
if (message.isMimeType(MULTIPART_WILDCARD) && content instanceof Multipart) {
Multipart mp = (Multipart) content;
for (int i = 0; i < mp.getCount(); i++) {
BodyPart bodyPart = mp.getBodyPart(i);
if (bodyPart instanceof MimeBodyPart && isNotBlank(bodyPart.getFileName())) {
MimeBodyPart mimeBodyPart = (MimeBodyPart) bodyPart;
mimeBodyPart.saveFile(new File(tmpDir, mimeBodyPart.getFileName()));
foundAttachments = true;
}
}
}
return foundAttachments ? tmpDir : null;
}
private String getText(Object content) throws IOException, MessagingException {
String text = null;
StringBuffer sb = new StringBuffer();
if (content instanceof String) {
sb.append((String) content);
} else if (content instanceof Multipart) {
Multipart mp = (Multipart) content;
for (int i = 0; i < mp.getCount(); i++) {
BodyPart bp = mp.getBodyPart(i);
sb.append(getText(bp.getContent()));
}
}
text = sb.toString();
return text;
}
/**
* Either every recipient is matching or neither of them.
*
* @throws MessagingException if no attachment is found and at least one exception was thrown
*/
public Collection match(Mail mail) throws MessagingException {
Exception anException = null;
try {
MimeMessage message = mail.getMessage();
Object content;
/** if there is an attachment and no inline text, the content type can be anything */
if (message.getContentType() == null) {
return null;
}
content = message.getContent();
if (content instanceof Multipart) {
Multipart multipart = (Multipart) content;
for (int i = 0; i < multipart.getCount(); i++) {
try {
Part part = multipart.getBodyPart(i);
String fileName = part.getFileName();
if (fileName != null) {
return mail.getRecipients(); // file found
}
} catch (MessagingException e) {
anException = e;
} // ignore any messaging exception and process next bodypart
}
} else {
String fileName = message.getFileName();
if (fileName != null) {
return mail.getRecipients(); // file found
}
}
} catch (Exception e) {
anException = e;
}
// if no attachment was found and at least one exception was catched rethrow it up
if (anException != null) {
throw new MessagingException("Malformed message", anException);
}
return null; // no attachment found
}
/** Returns the body of the message (if it's plain text). */
public String getBody() throws MessagingException, java.io.IOException {
Object content = message.getContent();
if (message.isMimeType("text/plain")) {
return (String) content;
} else if (message.isMimeType("multipart/alternative")) {
Multipart mp = (Multipart) message.getContent();
int numParts = mp.getCount();
for (int i = 0; i < numParts; ++i) {
if (mp.getBodyPart(i).isMimeType("text/plain"))
return (String) mp.getBodyPart(i).getContent();
}
return "";
} else if (message.isMimeType("multipart/*")) {
Multipart mp = (Multipart) content;
if (mp.getBodyPart(0).isMimeType("text/plain"))
return (String) mp.getBodyPart(0).getContent();
else return "";
} else return "";
}
// 读取邮件内容
@SuppressWarnings({"rawtypes", "unchecked"})
public Map readMail(String id) throws Exception {
Map map = new HashMap();
// 找到目标邮件
Message readmsg = findMail(msg, id);
// 读取邮件标题
map.put("subject", readmsg.getSubject());
// 读取发件人
map.put("sender", MimeUtility.decodeText(readmsg.getFrom()[0].toString()));
map.put("attach", "");
// 取得邮件内容
if (readmsg.isMimeType("text/*")) {
map.put("content", readmsg.getContent().toString());
} else {
System.out.println("this is not a text mail");
Multipart mp = (Multipart) readmsg.getContent();
if (mp == null) {
System.out.println("the content is null");
} else System.out.println("--------------------------multipart:" + mp.toString());
BodyPart part = null;
String disp = null;
StringBuffer result = new StringBuffer();
// 遍历每个Miltipart对象
for (int j = 0; j < mp.getCount(); j++) {
part = mp.getBodyPart(j);
disp = part.getDisposition();
// 如果有附件
if (disp != null && (disp.equals(Part.ATTACHMENT) || disp.equals(Part.INLINE))) {
// 取得附件文件名
String filename = MimeUtility.decodeText(part.getFileName()); // 解决中文附件名的问题
map.put("attach", filename);
// 下载附件
InputStream in = part.getInputStream(); // 附件输入流
if (attachFile.isDownload(filename)) attachFile.choicePath(filename, in); // // 下载附件
} else {
// 显示复杂邮件正文内容
result.append(getPart(part, j, 1));
}
}
map.put("content", result.toString());
}
return map;
}