@RequestMapping("receive.html")
@ResponseBody
protected String receive(boolean ssl, String protocol, String host, int port, String userId, String password, HttpServletRequest request) throws IOException{
Properties props = new Properties();
if(ssl){
// 使用ssl才要加
Security.addProvider(new com.sun.net.ssl.internal.ssl.Provider());
props.setProperty("mail.pop3.socketFactory.class", "javax.net.ssl.SSLSocketFactory");
props.setProperty("mail.pop3.socketFactory.fallback", "false");
}
if(host == null){
host = protocol + userId.substring(userId.indexOf("@") + 1);
}
Session session = Session.getDefaultInstance(props, null);
session.setDebug(true);
URLName urlName = new URLName(protocol, host, port, null, userId, password);
try {
Store store = session.getStore(urlName);
Folder folder = null;
try {
store.connect();
folder = store.getFolder("INBOX");
folder.open(Folder.READ_WRITE);
Message[] messages = folder.getMessages();
String userDir = request.getServletContext().getRealPath("/") + Constant.ATTACHMENT_PATH + userId + "/";
for (Message message : messages) {
Address[] recipients = message.getAllRecipients();
StringBuilder recipient = new StringBuilder();
// 有的邮件收件人是空
if(recipients != null){
for (Address address : recipients) {
recipient.append(((InternetAddress)address).getAddress()).append(";");
}
}
InternetAddress address = (InternetAddress)message.getFrom()[0];
// 美观用的设置发件人
String personal = address.getPersonal();
String sender = "<" + address.getAddress() + ">";
if(personal == null){
personal = sender.substring(1, sender.indexOf("@"));
}
sender = personal + sender;
String subject = message.getSubject();
// 这个日期是空的,坑了
// String time = DateUtils.getDateTime(message.getReceivedDate());
String time = DateUtils.getDateTime(message.getSentDate());
int size = message.getSize();
StringBuilder content = new StringBuilder();
StringBuilder attachment = new StringBuilder();
String mailId = Integer.toString(message.getMessageNumber());
if(message.isMimeType("text/*")){
content.append(message.getContent().toString());
}else if(message.isMimeType("multipart/*")){
Multipart multipart = (Multipart) message.getContent();
String attachmentDir = userDir + mailId + "/";
for (int i = 0, len = multipart.getCount(); i < len; i++) {
BodyPart bodyPart = multipart.getBodyPart(i);
String disposition = bodyPart.getDisposition();
if((disposition != null) &&(disposition.equals(Part.ATTACHMENT) || disposition.equals(Part.INLINE))){
// 有的文件名是空,比如文件内容是图片
if(bodyPart.getFileName() != null){
// 文件名被加密了,要解密
String fileName = MimeUtility.decodeText(bodyPart.getFileName());
// 文件名不能有冒号,故意选个特殊的字条来分隔
attachment.append(":").append(fileName);
FileUtils.copyInputStreamToFile(bodyPart.getInputStream(), new File(attachmentDir + fileName));
}else{
content.append(bodyPart.getContent().toString());
}
}else{
content.append(bodyPart.getContent().toString());
}
}
}
Map<String,Object> map = new HashMap<String,Object>();
map.put("mailId", mailId);
map.put("userId", userId);
map.put("recipient", recipient.toString());
map.put("sender", sender);
map.put("subject", subject);
map.put("content", content.toString());
map.put("time", time);
map.put("size", size);
map.put("attachment", attachment.length() > 0 ? attachment.substring(1).toString() : "");
int i = 0;
if((Integer)MybatisUtils.selectOne("mail.mysql.selectOneMail", map) == 0){
// 不存在才插入
i = MybatisUtils.insert("mail.mysql.insertMail", map);
}else{
i = MybatisUtils.insert("mail.mysql.updateMail", map);
}
if(i == 0){
return "failure";
}
}
} catch (AuthenticationFailedException e) {
System.out.println(e);
return "验证失败";
} catch (MessagingException e) {
e.printStackTrace();
return "failure";
} finally {
try {
if(folder != null) {
folder.close(true);
}
store.close();
} catch (MessagingException e) {
}
}
} catch (NoSuchProviderException e1) {
e1.printStackTrace();
return "failure";
}
return "success";
}
Folder和Store要close的,很容易漏了,不过不close也没看出什么异常; 对于pop3协议,用msg.getMessageID()唯一的UID判断, javamail提供的处理新邮件方法对pop3协议不起作用 ,get出来的id从1开始