使用JavaMail收发邮件示例备忘
发送邮件
import java.io.FileOutputStream;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.Properties;
import javax.activation.DataHandler;
import javax.activation.FileDataSource;
import javax.mail.Address;
import javax.mail.Authenticator;
import javax.mail.BodyPart;
import javax.mail.Message;
import javax.mail.PasswordAuthentication;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeBodyPart;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeMultipart;
import com.ning.http.util.Base64;
public class JavaMailSenderExample {
public static void main(String[] args) throws Exception {
final String username = "[email protected]";
final Properties props = new Properties();
props.setProperty("mail.smtp.host", "smtp.qq.com");
props.setProperty("mail.smtp.auth", "true");
final Session session = Session.getInstance(props, new Authenticator() {
@Override
protected PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication(username, "password");
};
});
final MimeMessage message = new MimeMessage(session);
// 主题
message.setSubject("带主题和附件的邮件");
// 发送时间
message.setSentDate(new Date());
// 发件人
message.setFrom(new InternetAddress(username, "发件人"));
// 收件人
List<Address> toAddresses = new ArrayList<>();
toAddresses.add(new InternetAddress("[email protected]", "张三"));
toAddresses.add(new InternetAddress("[email protected]", "李四"));
message.addRecipients(Message.RecipientType.TO,
toAddresses.toArray(new Address[toAddresses.size()]));
// 正文
BodyPart text = new MimeBodyPart();
text.setContent("这是一张图片<br/><img src='cid:pic.jpg'>",
"text/html;charset=UTF-8");
// 图片
MimeBodyPart image = new MimeBodyPart();
image.setDataHandler(new DataHandler(new FileDataSource("F:/1.jpg")));
image.setContentID("pic.jpg");
// 正文和图片
MimeBodyPart textBody = new MimeBodyPart();
MimeMultipart mp1 = new MimeMultipart();
mp1.addBodyPart(text);
mp1.addBodyPart(image);
mp1.setSubType("related");
textBody.setContent(mp1);
// 附件
MimeBodyPart attach = new MimeBodyPart();
DataHandler dh = new DataHandler(new FileDataSource("F:/测试.zip"));
attach.setDataHandler(dh);
// 防止中文乱码
attach.setFileName("=?UTF8?B?" + Base64.encode(dh.getName().getBytes("UTF8"))+"?=");
MimeMultipart content = new MimeMultipart();
content.addBodyPart(attach);
content.addBodyPart(textBody);
content.setSubType("mixed");
message.setContent(content);
message.saveChanges();
message.writeTo(new FileOutputStream("F:/MixedMail.eml"));
Transport.send(message);
}
}
复杂邮件请参考此图
接收邮件
详细的程序参考博客《javamail接收邮件(较全)》：http://xiangzhengyan.iteye.com/blog/85961
基本流程如下
import java.io.UnsupportedEncodingException;
import java.text.SimpleDateFormat;
import java.util.Properties;
import javax.mail.Authenticator;
import javax.mail.Folder;
import javax.mail.Message;
import javax.mail.PasswordAuthentication;
import javax.mail.Session;
import javax.mail.Store;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeUtility;
public class JavaMailReceiverExample {
public static void main(String[] args) throws Exception {
final String username = "[email protected]";
final Properties props = new Properties();
props.setProperty("mail.pop3.host", "pop3.163.com");
props.setProperty("mail.pop3.auth", "true");
final Session session = Session.getInstance(props, new Authenticator() {
@Override
protected PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication(username, "password");
};
});
Store store = session.getStore("pop3");
store.connect();
Folder folder = store.getFolder("INBOX");
folder.open(Folder.READ_ONLY);
final int messageCount = folder.getMessageCount();
System.out.println(messageCount);
Message[] messages = folder.getMessages();
for (Message message : messages) {
System.out.println("==================================");
SimpleDateFormat format = new SimpleDateFormat(
"yyyy-MM-dd HH:mm:ss");
// 主题
System.out.println("主题:" + MimeUtility.decodeText(message.getSubject()));
// 发送时间
System.out.println("发送时间:" + format.format(message.getSentDate()));
// 发件人
InternetAddress address = (InternetAddress) message.getFrom()[0];
System.out.println("发件人:" + addressToString(address));
// 收件人
InternetAddress[] to = (InternetAddress[]) message
.getRecipients(Message.RecipientType.TO);
if (to != null && to.length > 0) {
for (InternetAddress ad : to) {
System.out.println("收件人:" + addressToString(ad));
}
}
// 抄送人
InternetAddress[] cc = (InternetAddress[]) message
.getRecipients(Message.RecipientType.CC);
if (cc != null && cc.length > 0) {
for (InternetAddress ad : cc) {
System.out.println("抄送人:" + addressToString(ad));
}
}
// 密送人
InternetAddress[] bcc = (InternetAddress[]) message
.getRecipients(Message.RecipientType.BCC);
if (bcc != null && bcc.length > 0) {
for (InternetAddress ad : bcc) {
System.out.println("密送人:" + addressToString(ad));
}
}
}
folder.close(false);
store.close();
}
private static String addressToString(InternetAddress address)
throws UnsupportedEncodingException {
String personal = address.getPersonal();
if (personal == null) {
personal = "";
}
String ad = address.getAddress();
if (ad == null) {
ad = "";
}
return MimeUtility.decodeText(personal) + "<"
+ MimeUtility.decodeText(ad) + ">";
}
}
JavaMail使用POP3不能收取其他目录的邮件，参考《JAVAMAIL API FAQ》
http://www.oracle.com/technetwork/java/faq-135477.html#pop3folder
Q: How do I access or create folders other than INBOX on my POP3 server?
A: You can't. POP3 servers only support a single mailbox per user. Most mail readers that use POP3 also maintain a local message store into which they copy incoming messages (from the POP3 INBOX) and allow you to file messages in other folders. See this item for more information about local store providers.
附：《javamail接收邮件(较全)》全文转载
转载自http://xiangzhengyan.iteye.com/blog/85961
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]);
}
}
}