javamail收取信件
主要是为了解决某些邮件客户端发送邮件时把繁体也编码为gb2312,导致乱码出现.
懒得存数据库了,就写文件了.
另没有解决multipart中只取text/html或者text/plain的问题.
长时间潜水,第一次在je发表东西,自己纪念下.
懒得存数据库了,就写文件了.
另没有解决multipart中只取text/html或者text/plain的问题.
长时间潜水,第一次在je发表东西,自己纪念下.
package com.hcycom.lan.test;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileOutputStream;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.HashSet;
import java.util.Properties;
import javax.mail.Address;
import javax.mail.BodyPart;
import javax.mail.Folder;
import javax.mail.MessagingException;
import javax.mail.Multipart;
import javax.mail.NoSuchProviderException;
import javax.mail.Part;
import javax.mail.Session;
import javax.mail.Store;
import javax.mail.Message.RecipientType;
import javax.mail.event.StoreEvent;
import javax.mail.event.StoreListener;
import javax.mail.internet.ContentType;
import javax.mail.internet.MimeBodyPart;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeMultipart;
import javax.mail.internet.MimeUtility;
import javax.mail.internet.ParseException;
import com.sun.mail.pop3.POP3Folder;
public class ShowMail {
private static final String D_MAIL = "D:/mail/";
private static final String BR = "\n";
public static String replaceGB2312ToGBK(String source) {
if (source == null) {
return null;
}
if (source.toLowerCase().indexOf("?gb2312?") != -1) {
source = source.replaceAll("\\?[gG][bB]2312\\?", "?gbk?");
}
return source;
}
/**
* @param args
*/
public static void main(String[] args) {
new ShowMail().show();
}
private void show() {
Properties prop = System.getProperties();
Session session = Session.getDefaultInstance(prop);
try {
Store store = session.getStore("pop3");
store.addStoreListener(new StoreListener() {
public void notification(StoreEvent e) {
switch (e.getMessageType()) {
case StoreEvent.ALERT:
System.out.println("alert : " + e.getMessage());
break;
case StoreEvent.NOTICE:
System.out.println("notice : " + e.getMessage());
break;
}
}
});
store.connect("pop.163.com", "i2534", "password");
if (store.isConnected()) {
POP3Folder inbox = (POP3Folder) store.getFolder("INBOX");
if (inbox.exists()) {
inbox.open(Folder.READ_ONLY);
File dir = new File(D_MAIL);
if (!dir.exists()) {
dir.mkdirs();
}
File uids = new File(dir, "uids");
HashSet set = new HashSet();
HashSet newUids = new HashSet();
if (uids.exists()) {
BufferedReader br = new BufferedReader(new FileReader(
uids));
String line = null;
while ((line = br.readLine()) != null) {
set.add(line);
}
br.close();
}
int nCount = inbox.getMessageCount();
System.out.println("Inbox contains " + nCount
+ " messages.");
for (int i = 1; i <= nCount; i++) {
System.out.println("now accept " + i);
MimeMessage msg = (MimeMessage) inbox.getMessage(i);
String uid = inbox.getUID(msg);
if (set.contains(uid)) {
System.out
.println("this message is already exists.skip to next.");
continue;
}
File mail = File.createTempFile(new SimpleDateFormat(
"yyyyMMdd_").format(new Date()), ".mail", dir);
FileWriter fw = new FileWriter(mail, true);
newUids.add(uid);
fw.write("UID : " + uid);
fw.write(BR);
String subject = msg.getHeader("Subject", null);
fw
.write("Subject : "
+ MimeUtility
.decodeText(replaceGB2312ToGBK(subject)));
fw.write(BR);
fw.write("Send Date : "
+ new SimpleDateFormat("yyyy-MM-dd HH:mm")
.format(msg.getSentDate()));
fw.write(BR);
fw.write("From : ");
dumpAddresses(msg.getFrom(), fw);
fw.write(BR);
fw.write("To : ");
dumpAddresses(msg.getRecipients(RecipientType.TO), fw);
fw.write(BR);
fw.write("CC : ");
dumpAddresses(msg.getRecipients(RecipientType.CC), fw);
fw.write(BR);
fw.write("Content type : " + msg.getContentType());
fw.write(BR);
parts(msg, fw);
fw.flush();
fw.close();
System.out.println("accept over.");
}
if (!newUids.isEmpty()) {
FileWriter fw = new FileWriter(uids, true);
for (String s : newUids) {
fw.write(s);
fw.write(BR);
}
fw.flush();
fw.close();
}
}
inbox.close(false);
}
store.close();
} catch (NoSuchProviderException e) {
e.printStackTrace();
} catch (MessagingException e) {
e.printStackTrace();
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
private void dumpAddresses(Address[] addresses, FileWriter fw)
throws UnsupportedEncodingException, IOException {
if (addresses == null || fw == null) {
return;
}
for (Address address : addresses) {
fw.write(MimeUtility.decodeText(replaceGB2312ToGBK(address
.toString())));
fw.write(";");
}
}
private static void parts(Part part, FileWriter fw) {
if (part == null || fw == null) {
return;
}
try {
Object content = part.getContent();
if (content instanceof Multipart) {
MimeMultipart mmp = (MimeMultipart) content;
for (int index = 0; index < mmp.getCount(); index++) {
parts(mmp.getBodyPart(index), fw);
}
} else if (content instanceof InputStream) {
MimeBodyPart mbp = (MimeBodyPart) part;
String contentType = mbp.getContentType();
String name = getFileName(contentType);
fw.write("File name : " + name);
String cid = null;
if ((cid = mbp.getContentID()) != null) {
fw.write(" (cid : " + cid + ")");
}
String disposition = null;
if ((disposition = mbp.getDisposition()) != null) {
fw.write(" (disposition : " + disposition + ")");
}
fw.write(BR);
File file = new File(D_MAIL + name);
FileOutputStream fos = new FileOutputStream(file);
InputStream is = (InputStream) content;
int i = -1;
while ((i = is.read()) != -1) {
fos.write(i);
}
fos.flush();
fos.close();
} else if (content instanceof String) {
fw.write("----------- part begin -------------");
fw.write(BR);
if (part instanceof BodyPart) {
MimeBodyPart mbp = (MimeBodyPart) part;
String contentType = mbp.getContentType();
String language = getCharset(contentType);
String encoding = mbp.getEncoding();
fw.write("Content type : " + contentType);
fw.write(BR);
if (encoding != null) {
fw.write("Encoding : " + encoding);
fw.write(BR);
}
if (mbp.getRawInputStream() != null && encoding != null) {
InputStream is = MimeUtility.decode(mbp
.getRawInputStream(), encoding);
InputStreamReader isr = new InputStreamReader(is,
language);
BufferedReader br = new BufferedReader(isr);
String line = null;
StringBuilder sb = new StringBuilder();
while ((line = br.readLine()) != null) {
sb.append(line).append(BR);
}
fw.write(sb.toString());
fw.write(BR);
}
} else {
fw.write((String) content);
fw.write(BR);
}
fw.write("----------- part end -------------");
fw.write(BR);
}
} catch (MessagingException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
private static String getCharset(String contentType) {
String language = null;
try {
ContentType ct = new ContentType(contentType);
language = ct.getParameter("charset");
} catch (ParseException e) {
e.printStackTrace();
}
if (language == null) {
language = MimeUtility.getDefaultJavaCharset();
}
if (language.equalsIgnoreCase("gb2312")) {
language = "gbk";
}
return language;
}
private static String getFileName(String contentType) {
String name = null;
try {
ContentType ct = new ContentType(contentType);
name = ct.getParameter("name");
} catch (ParseException e1) {
e1.printStackTrace();
}
if (name == null) {
name = new SimpleDateFormat("yyyyMMddHHmmssSSS").format(new Date());
}
try {
name = MimeUtility.decodeText(replaceGB2312ToGBK(name));
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
return name;
}
}