java实现简单发送邮件功能（java收发邮件）-eolink官网

java实现简单发送邮件功能（java收发邮件）

本文实例为大家分享了java实现简单发送邮件的具体代码，供大家参考，具体内容如下

添加依赖

javax.mail

javax.mail-api

1.6.2

com.sun.mail

javax.mail

1.6.2

自定义异常类

public class EmailException extends Exception {

public EmailException(String message) {

super(message);

}

public EmailException() {

super();

}

/**

private static final long serialVersionUID = 115631651651651651L;

}

IMAP协议读取邮件

import javbWPYfsLRZa.io.BufferedInputStream;

import java.io.BufferedOutputStream;

import java.io.File;

import java.io.FileNotFoundException;

import java.io.FileOutputStream;

import java.io.IOException;

import java.io.InputStream;

import java.io.UnsupportedEncodingException;

import java.text.SimpleDateFormat;

import java.util.Date;

import java.util.Properties;

import javax.mail.Address;

import javax.mail.BodyPart;

import javax.mail.Flags;

import javax.mail.Folder;

import javax.mail.Message;

import javax.mail.MessagingException;

import javax.mail.Multipart;

import javax.mail.Part;

import javax.mail.Session;

import javax.mail.Store;

import javax.mail.internet.InternetAddress;

import javax.mail.internet.MimeMessage;

import javax.mail.internet.MimeMultipart;

import javax.mail.internet.MimeUtility;

import com.sun.mail.util.MailSSLSocketFactory;

public class IMAPReceiveMail {

private String user = "";//账号

private String password = "";//密码

private String HOST = ""; // smtp服务器

// private Properties props = null;

private Folder folder = null;//收件箱

private Store store = null;//实例对象

// final String pop3 = "IMAP";

final String imap = "imap";

public IMAPReceiveMail(String user,String password) {

this.password = password;//密码

this.user = user;//账户

}

/**

* @param message 邮件对象

* @param to 收件人

* @throws MessagingException

* @throws IOException

// public void forwardMail(Message message,String to) throws MessagingException, IOException {

// Message forward = new MimeMessage(session);

// forward.setSubject(message.getSubject());

// forward.setFrom(new InternetAddress(to));

// forward.setRecipient(Message.RecipientType.TO, new InternetAddress(to));

// forward.setSentDate(new Date());

// forward.setContent(message.getContent(), message.getContentType());

// Transport smtp = session.getTransport("smtp");

// smtp.connect(HOST, user, password);//连接服务器的邮箱

// smtp.sendMessage(forward, forward.getAllRecipients());

// smtp.close();

// }

/**

* 接收邮件

public Folder resceive() throws Exception {

/**

* 因为现在使用的是163邮箱而163的 pop地址是 pop3.163.com 端口是 110 比如使用好未来企业邮箱就需要换成好未来邮箱的

* pop服务器地址 pop.263.net 和端口 110

String duankou = ""; // 端口号

String servicePath = ""; // 服务器地址

if(user==null||user.length()==0) throw new EmailException("账户不能为空！！！！");

if(password==null||password.length()==0) throw new EmailException("密码不能为空！！！！");

if(user.contains("@163")) {

duankou = "143"; // 端口号

servicePath = "imap.163.com"; // 服务器地址

}else if(user.contains("@qq")) {

duankou = "993"; // 端口号

servicePath = "imap.qq.com"; // 服务器地址

}else {

throw new EmailException("不支持该协议");

}

// 准备连接服务器的会话信息

Properties props = new Properties();

props.setProperty("mail.store.protocol", imap); // 使用pop3协议

props.setProperty("mail.imap.socketFactory.fallback", "false");

props.setProperty("mail.imap.port", duankou); // 端口

props.setProperty("mail.imap.socketFactory.port", duankou); // 端口

props.setProperty("mail.transport.protocol", "smtp");// 发送邮件协议名称

props.setProperty("mail.smtp.auth", "true"); //需要经过授权，也就是有户名和密码的校验，这样才能通过验证（一定要有这一条

props.setProperty("mail.host", HOST);

//关闭读取附件时分批获取 BASE64 输入流的配置

props.setProperty("mail.imap.partialfetch", "false");

props.setProperty("mail.imaps.partialfetch", "false");

// props.setProperty("mail.pop3.host", servicePath); // pop3服务器

// final String SSL_FACTORY = "javax.net.ssl.SSLSocketFactory";

// Security.addProvider(new com.sun.net.ssl.internal.ssl.Provider());

// props.setProperty("mail.imap.socketFactory.class", SSL_FACTORY);

MailSSLSocketFactory sf = new MailSSLSocketFactory();//ssl加密

sf.setTrustAllHosts(true);

props.put("mail.imap.ssl.enable", "true");

props.put("mail.imap.ssl.socketFactory", sf);

// 创建Session实例对象

Session session = Session.getInstance(props);

session.setDebug(false);

store = session.getStore(imap);

store.connect(servicePath,user,password); // 163邮箱程序登录属于第三方登录所以这里的密码是163给的授权密码而并非普通的登录密码

// 获得收件箱

folder = store.getFolder("INBOX");

* Folder.READ_ONLY：只读权限 Folder.READ_WRITE：可读可写（可以修改邮件的状态）

folder.open(Folder.READ_WRITE); // 打开收件箱

// 由于POP3协议无法获知邮件的状态,所以getUnreadMessageCount得到的是收件箱的邮件总数

// System.out.println("未读邮件数: " + folder.getUnreadMessageCount());

// 由于POP3协议无法获知邮件的状态,所以下面得到的结果始终都是为0

// System.out.println("删除邮件数: " + folder.getDeletedMessageCount());

// System.out.println("新邮件: " + folder.getNewMessageCount());

// 获得收件箱中的邮件总数

// System.out.println("邮件总数: " + folder.getMessageCount());

// 得到收件箱中的所有邮件,并解析

// Message[] messages = folder.getMessages();

// parseMessage(messages);

// 得到收件箱中的所有邮件并且删除邮件

// deleteMessage(messages);

// 释放资源

// folder.close(true);

// store.close();

return folder;

}

public void Colsefolder() throws MessagingException {//关闭资源

if(folder!=null) {

folder.close();

}

if(store!=null) {

store.close();

}

/**

* 解析邮件

* @param messages 要解析的邮件列表

public void parseMessage(Message... messages) throws MessagingException, IOException {

if (messages == null || messages.length < 1)

throw new MessagingException("未找到要解析的邮件!");

// 解析所有邮件

for (int i = 0, count = messages.length; i < count; i++) {

MimeMessage msg = (MimeMessage) messages[i];

System.out.println("------------------解析第" + msg.getMessageNumber() + "封邮件-------------------- ");

System.out.println("主题: " + getSubject(msg));

System.out.println("发件人: " + getFrom(msg));

System.out.println("收件人：" + getReceiveAddress(msg, null));

System.out.println("发送时间：" + getSentDate(msg, null));

System.out.println("是否已读：" + isSeen(msg));

System.out.println("邮件优先级：" + getPriority(msg));

System.out.println("是否需要回执：" + isReplySign(msg));

System.out.println("邮件大小：" + msg.getSize() * 1024 + "kb");

boolean isContainerAttachment = isContainAttachment(msg);

System.out.println("是否包含附件：" + isContainerAttachment);

if (isContainerAttachment) {

saveAttachment(msg, "f:\\mailTest\\" + msg.getSubject() + "_" + i + "_"); // 保存附件

}

StringBuffer content = new StringBuffer(30);

getMailTextContent(msg, content);

System.out.println("邮件正文：" + (content.length() > 100 ? content.substring(0, 100) + "..." : content));

System.out.println("------------------第" + msg.getMessageNumber() + "封邮件解析结束-------------------- ");

System.out.println();

}

/**

* 解析邮件

* @param messages 要解析的邮件列表

public void deleteMessage(Message... messages) throws MessagingException, IOException {

if (messages == null || messages.length < 1)

throw new MessagingException("未找到要解析的邮件!");

// 解析所有邮件

for (int i = 0, count = messages.length; i < count; i++) {

/**

* 邮件删除

Message message = messages[i];

String subject = message.getSubject();

// set the DELETE flag to true

message.setFlag(Flags.Flag.DELETED, true);

System.out.println("Marked DELETE for message: " + subject);

}

/**

* 获得邮件主题

* @param msg 邮件内容

* @return 解码后的邮件主题

public String getSubject(MimeMessage msg) throws UnsupportedEncodingException, MessagingException {

return MimeUtility.decodeText(msg.getSubject());

}

/**

* 获得邮件发件人

* @param msg 邮件内容

* @return 姓名

* @throws MessagingException

* @throws UnsupportedEncodingException

public String getFrom(MimeMessage msg) throws MessagingException, UnsupportedEncodingException {

String from = "";

Address[] froms = msg.getFrom();

if (froms.length < 1)

throw new MessagingException("没有发件人!");

InternetAddress address = (InternetAddress) froms[0];

String person = address.getPersonal();

if (person != null) {

person = MimeUtility.decodeText(person) + " ";

} else {

person = "";

}

from = person + "<" + address.getAddress() + ">";

return from;

}

public String getFromAddress(MimeMessage msg) throws MessagingException, UnsupportedEncodingException {

String from = "";

Address[] froms = msg.getFrom();

if (froms.length < 1)

throw new MessagingException("没有发件人!");

InternetAddress address = (InternetAddress) froms[0];

from = address.getAddress();

return from;

}

/**

* 根据收件人类型，获取邮件收件人、抄送和密送地址。如果收件人类型为空，则获得所有的收件人

* Message.RecipientType.TO 收件人

* Message.RecipientType.CC 抄送

* Message.RecipientType.BCC 密送

* @param msg 邮件内容

* @param type 收件人类型

* @return 收件人1 <邮件地址1>, 收件人2 <邮件地址2>, ...

* @throws MessagingException

public String getReceiveAddress(MimeMessage msg, Message.RecipientType type) throws MessagingException {

StringBuffer receiveAddress = new StringBuffer();

Address[] addresss = null;

if (type == null) {

addresss = msg.getAllRecipients();

} else {

addresss = msg.getRecipients(type);

}

if (addresss == null || addresss.length < 1)

throw new MessagingException("没有收件人!");

for (Address address : addresss) {

InternetAddress internetAddress = (InternetAddress) address;

receiveAddress.append(internetAddress.toUnicodeString()).append(",");

}

receiveAddress.deleteCharAt(receiveAddress.length() - 1); // 删除最后一个逗号

return receiveAddress.toString();

}

/**

* 获得邮件发送时间

* @param msg 邮件内容

* @return yyyy年mm月dd日星期X HH:mm

* @throws MessagingException

public String getSentDate(MimeMessage msg, String pattern) throws MessagingException {

Date receivedDate = msg.getSentDate();

if (receivedDate == null)

return "";

if (pattern == null || "".equals(pattern))

pattern = "yyyy年MM月dd日 E HH:mm ";

return new SimpleDateFormat(pattern).format(receivedDate);

}

/**

* 判断邮件中是否包含附件

* @param msg 邮件内容

* @return 邮件中存在附件返回true，不存在返回false

* @throws MessagingException

* @throws IOException

public boolean isContainAttachment(Part part) throws MessagingException, IOException {

boolean flag = false;

if (part.isMimeType("multipart/*")) {

MimeMultipart multipart = (MimeMultipart) part.getContent();

int partCount = multipart.getCount();

for (int i = 0; i < partCount; i++) {

BodyPart bodyPart = multipart.getBodyPart(i);

String disp = bodyPart.getDisposition();

if (disp != null && (disp.equalsIgnoreCase(Part.ATTACHMENT) || disp.equalsIgnoreCase(Part.INLINE))) {

flag = true;

} else if (bodyPart.isMimeType("multipart/*")) {

flag = isContainAttachment(bodyPart);

} else {

String contentType = bodyPart.getContentType();

if (contentType.indexOf("application") != -1) {

flag = true;

}

if (contentType.indexOf("name") != -1) {

flag = true;

}

if (flag)

break;

}

} else if (part.isMimeType("message/rfc822")) {

flag = isContainAttachment((Part) part.getContent());

}

return flag;

}

/**

* 判断邮件是否已读

* @param msg 邮件内容

* @return 如果邮件已读返回true,否则返回false

* @throws MessagingException

public boolean isSeen(MimeMessage msg) throws MessagingException {

return msg.getFlags().contains(Flags.Flag.SEEN);

}

/**

* 判断邮件是否需要阅读回执

* @param msg 邮件内容

* @return 需要回执返回true,否则返回false

* @throws MessagingException

public boolean isReplySign(MimeMessage msg) throws MessagingException {

boolean replySign = false;

String[] headers = msg.getHeader("Disposition-Notification-To");

if (headers != null)

replySign = true;

return replySign;

}

/**

* 获得邮件的优先级

* @param msg 邮件内容

* @return 1(High):紧急 3:普通(Normal) 5:低(Low)

* @throws MessagingException

public String getPriority(MimeMessage msg) throws MessagingException {

String priority = "普通";

String[] headers = msg.getHeader("X-Priority");

if (headers != null) {

String headerPriority = headers[0];

if (headerPriority.indexOf("1") != -1 || headerPriority.indexOf("High") != -1)

priority = "紧急";

else if (headerPriority.indexOf("5") != -1 || headerPriority.indexOf("Low") != -1)

priority = "低";

else

priority = "普通";

}

return priority;

}

/**

* 获得邮件文本内容

* @param part 邮件体

* @param content 存储邮件文本内容的字符串

* @throws MessagingException

* @throws IOException

public void getMailTextContent(Part part, StringBuffer content) throws MessagingException, IOException {

// 如果是文本类型的附件，通过getContent方法可以取到文本内容，但这不是我们需要的结果，所以在这里要做判断

boolean isContainTextAttach = part.getContentType().indexOf("name") > 0;

if (part.isMimeType("text/*") && !isContainTextAttach) {

content.append(part.getContent().toString());

} else if (part.isMimeType("message/rfc822")) {

getMailTextContent((Part) part.getContent(), content);

} else if (part.isMimeType("multipart/*")) {

Multipart multipart = (Multipart) part.getContent();

int partCount = multipart.getCount();

for (int i = 0; i < partCount; i++) {

BodyPart bodyPart = multipart.getBodyPart(i);

getMailTextContent(bodyPart, content);

}

/**

* 保存附件

* @param part 邮件中多个组合体中的其中一个组合体

* @param destDir 附件保存目录

* @throws UnsupportedEncodingException

* @throws MessagingException

* @throws FileNotFoundException

* @throws IOException

public void saveAttachment(Part part, String destDir)

throws UnsupportedEncodingException, MessagingException, FileNotFoundException, IOException {

if (part.isMimeType("multipart/*")) {

Multipart multipart = (Multipart) part.getContent(); // 复杂体邮件

// 复杂体邮件包含多个邮件体

int partCount = multipart.getCount();

for (int i = 0; i < partCount; i++) {

// 获得复杂体邮件中其中一个邮件体

BodyPart bodyPart = multipart.getBodyPart(i);

// 某一个邮件体也有可能是由多个邮件体组成的复杂体

String disp = bodyPart.getDisposition();

if (disp != null && (disp.equalsIgnoreCase(Part.ATTACHMENT) || disp.equalsIgnoreCase(Part.INLINE))) {

InputStream is = bodyPart.getInputStream();

saveFile(is, destDir, decodeText(bodyPart.getFileName()));

} else if (bodyPart.isMimeType("multipart/*")) {

saveAttachment(bodyPart, destDir);

} else {

String contentType = bodyPart.getContentType();

if (contentType.indexOf("name") != -1 || contentType.indexOf("application") != -1) {

saveFile(bodyPart.getInputStream(), destDir, decodeText(bodyPart.getFileName()));

}

} else if (part.isMimeType("message/rfc822")) {

saveAttachment((Part) part.getContent(), destDir);

}

/**

* 读取输入流中的数据保存至指定目录

* @param is 输入流

* @param fileName 文件名

* @param destDir 文件存储目录

* @throws FileNotFoundException

* @throws IOException

private void saveFile(InputStream is, String destDir, String fileName)

throws FileNotFoundException, IOException {

BufferedInputStream bis = new BufferedInputStream(is);

BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream(new File(destDir + fileName)));

int len = -1;

while ((len = bis.read()) != -1) {

bos.write(len);

bos.flush();

}

bos.close();

bis.close();

}

public void SetSEEN(MimeMessage message) throws MessagingException {//设置文件已读

message.setFlag(Flags.Flag.SEEN,true);

}

/**

* 文本解码

* @param encodeText 解码MimeUtility.encodeText(String text)方法编码后的文本

* @return 解码后的文本

* @throws UnsupportedEncodingException

public String decodeText(String encodeText) throws UnsupportedEncodingException {

if (encodeText == null || "".equals(encodeText)) {

return "";

} else {

return MimeUtility.decodeText(encodeText);

}

POP3协议接收邮件

import java.io.BufferedInputStream;

import java.io.BufferedOutputStream;

import java.io.File;

import java.io.FileNotFoundException;

import java.io.FileOutputStream;

import java.io.IOException;

import java.io.InputStream;

import java.io.UnsupportedEncodingException;

import java.text.SimpleDateFormat;

import java.util.Date;

import java.util.Properties;

import javax.mail.Address;

import javax.mail.BodyPart;

import javax.mail.Flags;

import javax.mail.Folder;

import javax.mail.Message;

import javax.mail.MessagingException;

import javax.mail.Multipart;

import javax.mail.Part;

import javax.mail.Session;

import javax.mail.Store;

import javax.mail.internet.InternetAddress;

import javax.mail.internet.MimeMessage;

import javax.mail.internet.MimeMultipart;

import javax.mail.internet.MimeUtility;

import com.sun.mail.util.MailSSLSocketFactory;

/**

* 使用POP3协议接收邮件

public class POP3ReceiveMail {

private String user = "";//账号

private String password = "";//密码

// private Properties props = null;

private Folder folder = null;//收件箱

private Store store = null;//实例对象

final String pop3 = "pop3";

// final String imap = "imap";

public POP3ReceiveMail(String user,String password) {

this.password = password;//密码

this.user = user;//账户

}

/**

* 接收邮件

public Folder resceive() throws Exception {

/**

* 因为现在使用的是163邮箱而163的 pop地址是 pop3.163.com 端口是 110 比如使用好未来企业邮箱就需要换成好未来邮箱的

* pop服务器地址 pop.263.net 和端口 110

String duankou = ""; // 端口号

String servicePath = ""; // 服务器地址

if(user==null||user.length()==0) throw new EmailException("账户不能为空！！！！");

if(password==null||password.length()==0) throw new EmailException("密码不能为空！！！！");

if(user.contains("@163")) {

duankou = "110"; // 端口号

servicePath = "pop3.163.com"; // 服务器地址

}else if(user.contains("@qq")) {

duankou = "995"; // 端口号

servicePath = "pop.qq.com"; // 服务器地址

}else {

throw new EmailException("不支持该协议");

}

// 准备连接服务器的会话信息

Properties props = new Properties();

props.setProperty("mail.store.protocol", pop3); // 使用pop3协议

// props.setProperty("mail.transport.protocol", pop3); // 使用pop3协议

props.setProperty("mail.pop3.port", duankou); // 端口

props.setProperty("mail.pop3.host", servicePath); // pop3服务器

props.setProperty("mail.pop3.socketFactory.fallback", "true");

MailSSLSocketFactory sf = new MailSSLSocketFactory();//ssl加密

sf.setTrustAllHosts(true);

props.put("mail.pop3.ssl.enable", "true");

props.put("mail.pop3.ssl.socketFactory", sf);

// final String SSL_FACTORY = "javax.net.ssl.SSLSocketFactory";

// Security.addProvider(new com.sun.net.ssl.internal.ssl.Provider());

// props.setProperty("mail.pop3.socketFactory.class", SSL_FACTORY);

// 创建Session实例对象

Session session = Session.getInstance(props);

store = session.getStore(pop3);

store.connect(servicePath,user,password); // 163邮箱程序登录属于第三方登录所以这里的密码是163给的授权密码而并非普通的登录密码

// 获得收件箱

folder = store.getFolder("INBOX");

* Folder.READ_ONLY：只读权限 Folder.READ_WRITE：可读可写（可以修改邮件的状态）

// folder.open(Folder.READ_WRITE); // 打开收件箱

folder.open(Folder.READ_WRITE); // 打开收件箱

// 由于POP3协议无法获知邮件的状态,所以getUnreadMessageCount得到的是收件箱的邮件总数

// System.out.println("未读邮件数: " + folder.getUnreadMessageCount());

// 由于POP3协议无法获知邮件的状态,所以下面得到的结果始终都是为0

// System.out.println("删除邮件数: " + folder.getDeletedMessageCount());

// System.out.println("新邮件: " + folder.getNewMessageCount());

// 获得收件箱中的邮件总数

// System.out.println("邮件总数: " + folder.getMessageCount());

// 得到收件箱中的所有邮件,并解析

// Message[] messages = folder.getMessages();

// parseMessage(messages);

// 得到收件箱中的所有邮件并且删除邮件

// deleteMessage(messages);

// 释放资源

// folder.close(true);

// store.close();

return folder;

}

public void Colsefolder() throws MessagingException {//关闭资源

if(folder!=null) {

folder.close();

}

if(store!=null) {

store.close();

}

/**

* 解析邮件

* @param messages 要解析的邮件列表

public void parseMessage(Message... messages) throws MessagingException, IOException {

if (messages == null || messages.length < 1)

throw new MessagingException("未找到要解析的邮件!");

// 解析所有邮件

for (int i = 0, count = messages.length; i < count; i++) {

MimeMessage msg = (MimeMessage) messages[i];

System.out.println("------------------解析第" + msg.getMessageNumber() + "封邮件-------------------- ");

System.out.println("主题: " + getSubject(msg));

System.out.println("发件人: " + getFrom(msg));

System.out.println("收件人：" + getReceiveAddress(msg, null));

System.out.println("发送时间：" + getSentDate(msg, null));

System.out.println("是否已读：" + isSeen(msg));

System.out.println("邮件优先级：" + getPriority(msg));

System.out.println("是否需要回执：" + isReplySign(msg));

System.out.println("邮件大小：" + msg.getSize() * 1024 + "kb");

boolean isContainerAttachment = isContainAttachment(msg);

System.out.println("是否包含附件：" + isContainerAttachment);

if (isContainerAttachment) {

saveAttachment(msg, "f:\\mailTest\\" + msg.getSubject() + "_" + i + "_"); // 保存附件

}

StringBuffer content = new StringBuffer(30);

getMailTextContent(msg, content);

System.out.println("邮件正文：" + (content.length() > 100 ? content.substring(0, 100) + "..." : content));

System.out.println("------------------第" + msg.getMessageNumber() + "封邮件解析结束-------------------- ");

System.out.println();

}

/**

* 解析邮件

* @param messages 要解析的邮件列表

public void deleteMessage(Message... messages) throws MessagingException, IOException {

if (messages == null || messages.length < 1)

throw new MessagingException("未找到要解析的邮件!");

// 解析所有邮件

for (int i = 0, count = messages.length; i < count; i++) {

/**

* 邮件删除

Message message = messages[i];

String subject = message.getSubject();

// set the DELETE flag to true

message.setFlag(Flags.Flag.DELETED, true);

System.out.println("Marked DELETE for message: " + subject);

}

/**

* 获得邮件主题

* @param msg 邮件内容

* @return 解码后的邮件主题

public String getSubject(MimeMessage msg) throws UnsupportedEncodingException, MessagingException {

return MimeUtility.decodeText(msg.getSubject());

}

/**

* 获得邮件发件人

* @param msg 邮件内容

* @return 姓名

* @throws MessagingException

* @throws UnsupportedEncodingException

public String getFrom(MimeMessage msg) throws MessagingException, UnsupportedEncodingException {

String from = "";

Address[] froms = msg.getFrom();

if (froms.length < 1)

throw new MessagingException("没有发件人!");

InternetAddress address = (InternetAddress) froms[0];

String person = address.getPersonal();

if (person != null) {

person = MimeUtility.decodeText(person) + " ";

} else {

person = "";

}

from = person + "<" + address.getAddress() + ">";

return from;

}

public String getFromAddress(MimeMessage msg) throws MessagingException, UnsupportedEncodingException {

String from = "";

Address[] froms = msg.getFrom();

if (froms.length < 1)

throw new MessagingException("没有发件人!");

InternetAddress address = (InternetAddress) froms[0];

from = address.getAddress();

return from;

}

/**

* 根据收件人类型，获取邮件收件人、抄送和密送地址。如果收件人类型为空，则获得所有的收件人

* Message.RecipientType.TO 收件人

* Message.RecipientType.CC 抄送

* Message.RecipientType.BCC 密送

* @param msg 邮件内容

* @param type 收件人类型

* @return 收件人1 <邮件地址1>, 收件人2 <邮件地址2>, ...

* @throws MessagingException

public String getReceiveAddress(MimeMessage msg, Message.RecipientType type) throws MessagingException {

StringBuffer receiveAddress = new StringBuffer();

Address[] addresss = null;

if (type == null) {

addresss = msg.getAllRecipients();

} else {

addresss = msg.getRecipients(type);

}

if (addresss == null || addresss.length < 1)

throw new MessagingException("没有收件人!");

for (Address address : addresss) {

InternetAddress internetAddress = (InternetAddress) adhttp://dress;

receiveAddress.append(internetAddress.toUnicodeString()).append(",");

}

receiveAddress.deleteCharAt(receiveAddress.length() - 1); // 删除最后一个逗号

return receiveAddress.toString();

}

/**

* 获得邮件发送时间

* @param msg 邮件内容

* @return yyyy年mm月dd日星期X HH:mm

* @throws MessagingException

public String getSentDate(MimeMessage msg, String pattern) throws MessagingException {

Date receivedDate = msg.getSentDate();

if (receivedDate == null)

return "";

if (pattern == null || "".equals(pattern))

pattern = "yyyy年MM月dd日 E HH:mm ";

return new SimpleDateFormat(pattern).format(receivedDate);

}

/**

* 判断邮件中是否包含附件

* @param msg 邮件内容

* @return 邮件中存在附件返回true，不存在返回false

* @throws MessagingException

* @throws IOException

public boolean isContainAttachment(Part part) throws MessagingException, IOException {

boolean flag = false;

if (part.isMimeType("multipart/*")) {

MimeMultipart multipart = (MimeMultipart) part.getContent();

int partCount = multipart.getCount();

for (int i = 0; i < partCount; i++) {

BodyPart bodyPart = multipart.getBodyPart(i);

String disp = bodyPart.getDisposition();

if (disp != null && (disp.equalsIgnoreCase(Part.ATTACHMENT) || disp.equalsIgnoreCase(Part.INLINE))) {

flag = true;

} else if (bodyPart.isMimeType("multipart/*")) {

flag = isContainAttachment(bodyPart);

} else {

String contentType = bodyPart.getContentType();

if (contentType.indexOf("application") != -1) {

flag = true;

}

if (contentType.indexOf("name") != -1) {

flag = true;

}

if (flag)

break;

}

} else if (part.isMimeType("message/rfc822")) {

flag = isContainAttachment((Part) part.getContent());

}

return flag;

}

/**

* 判断邮件是否已读

* @param msg 邮件内容

* @return 如果邮件已读返回true,否则返回false

* @throws MessagingException

public boolean isSeen(MimeMessage msg) throws MessagingException {

return msg.getFlags().contains(Flags.Flag.SEEN);

}

/**

* 判断邮件是否需要阅读回执

* @param msg 邮件内容

* @return 需要回执返回true,否则返回false

* @throws MessagingException

public boolean isReplySign(MimeMessage msg) throws MessagingException {

boolean replySign = false;

String[] headers = msg.getHeader("Disposition-Notification-To");

if (headers != null)

replySign = true;

return replySign;

}

/**

* 获得邮件的优先级

* @param msg 邮件内容

* @return 1(High):紧急 3:普通(Normal) 5:低(Low)

* @throws MessagingException

public String getPriority(MimeMessage msg) throws MessagingException {

String priority = "普通";

String[] headers = msg.getHeader("X-Priority");

if (headers != null) {

String headerPriority = headers[0];

if (headerPriority.indexOf("1") != -1 || headerPriority.indexOf("High") != -1)

priority = "紧急";

else if (headerPriority.indexOf("5") != -1 || headerPriority.indexOf("Low") != -1)

priority = "低";

else

priority = "普通";

}

return priority;

}

/**

* 获得邮件文本内容

* @param part 邮件体

* @param content 存储邮件文本内容的字符串

* @throws MessagingException

* @throws IOException

public void getMailTextContent(Part part, StringBuffer content) throws MessagingException, IOException {

// 如果是文本类型的附件，通过getContent方法可以取到文本内容，但这不是我们需要的结果，所以在这里要做判断

boolean isContainTextAttach = part.getContentType().indexOf("name") > 0;

if (part.isMimeType("text/*") && !isContainTextAttach) {

content.append(part.getContent().toString());

} else if (part.isMimeType("message/rfc822")) {

getMailTextContent((Part) part.getContent(), content);

} else if (part.isMimeType("multipart/*")) {

Multipart multipart = (Multipart) part.getContent();

int partCount = multipart.getCount();

for (int i = 0; i < partCount; i++) {

BodyPart bodyPart = multipart.getBodyPart(i);

getMailTextContent(bodyPart, content);

}

/**

* 保存附件

* @param part 邮件中多个组合体中的其中一个组合体

* @param destDir 附件保存目录

* @throws UnsupportedEncodingException

* @throws MessagingException

* @throws FileNotFoundException

* @throws IOException

public void saveAttachment(Part part, String destDir)

throws UnsupportedEncodingException, MessagingException, FileNotFoundException, IOException {

if (part.isMimeType("multipart/*")) {

Multipart multipart = (Multipart) part.getContent(); // 复杂体邮件

// 复杂体邮件包含多个邮件体

int partCount = multipart.getCount();

for (int i = 0; i < partCount; i++) {

// 获得复杂体邮件中其中一个邮件体

BodyPart bodyPart = multipart.getBodyPart(i);

// 某一个邮件体也有可能是由多个邮件体组成的复杂体

String disp = bodyPart.getDisposition();

if (disp != null && (disp.equalsIgnoreCase(Part.ATTACHMENT) || disp.equalsIgnoreCase(Part.INLINE))) {

InputStream is = bodyPart.getInputStream();

saveFile(is, destDir, decodeText(bodyPart.getFileName()));

} else if (bodyPart.isMimeType("multipart/*")) {

saveAttachment(bodyPart, destDir);

} else {

String contentType = bodyPart.getContentType();

if (contentType.indexOf("name") != -1 || contentType.indexOf("application") != -1) {

saveFile(bodyPart.getInputStream(), destDir, decodeText(bodyPart.getFileName()));

}

} else if (part.isMimeType("message/rfc822")) {

saveAttachment((Part) part.getContent(), destDir);

}

/**

* 读取输入流中的数据保存至指定目录

* @param is 输入流

* @param fileName 文件名

* @param destDir 文件存储目录

* @throws FileNotFoundException

* @throws IOException

private void saveFile(InputStream is, String destDir, String fileName)

throws FileNotFoundException, IOException {

BufferedInputStream bis = new BufferedInputStream(is);

BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream(new File(destDir + fileName)));

int len = -1;

while ((len = bis.read()) != -1) {

bos.write(len);

bos.flush();

}

bos.close();

bis.close();

}

/**

* 文本解码

* @param encodeText 解码MimeUtility.encodeText(String text)方法编码后的文本

* @return 解码后的文本

* @throws UnsupportedEncodingException

public String decodeText(String encodeText) throws UnsupportedEncodingException {

if (encodeText == null || "".equals(encodeText)) {

return "";

} else {

return MimeUtility.decodeText(encodeText);

}

发送邮件

import java.io.File;

import java.io.IOException;

import java.io.UnsupportedEncodingException;

import java.security.GeneralSecurityException;

import java.util.Date;

import java.util.Properties;

import java.util.UUID;

import java.util.regex.Matcher;

import java.util.regex.Pattern;

import javax.activation.DataHandler;

import javax.activation.FileDataSource;

import javax.mail.BodyPart;

import javax.mail.Message;

import javax.mail.MessagingException;

import javax.mail.Multipart;

import javax.mail.Session;

import javax.mail.Transport;

import javax.mail.internet.AddressException;

import javax.mail.internet.InternetAddress;

import javax.mail.internet.MimeBodyPart;

import javax.mail.internet.MimeMessage;

import javax.mail.internet.MimeMultipart;

import javax.mail.internet.MimeUtility;

import com.sun.mail.util.MailSSLSocketFactory;

* 发送邮件

public class SendMailUtil {

private String HOST = ""; // smtp服务器

private String FROM = ""; // 发件人地址

// private String TO = ""; // 收件人地址

private String[] AFFIX = null; // 附件地址

// private String AFFIXNAME = ""; // 附件名称

private String USER = ""; // 用户名

private String PWD = ""; // 163的授权码

// private String SUBJECT = ""; // 邮件标题

private String[] TOS = null;

private Properties props = null;//

/**

* @param USER 账户名

* @param PWD 密码

* @param FROM 发件人地址

* @throws EmailException

* @throws GeneralSecurityException

public SendMailUtil(String USER,String PWD,String FROM) throws EmailException, GeneralSecurityException {

this.USER = USER;//账户

this.PWD = PWD;//密码

this.FROM = FROM;//发件人地址

stratProperties();

}

private void stratProperties() throws EmailException, GeneralSecurityException {

props = new Properties();

if(USER==null||USER.length()==0) {

throw new EmailException("邮箱账号不能为空");

}else {

if(USER.contains("@qq")) {

HOST = "smtp.qq.com";

}else if(USER.contains("@163")) {

HOST = "smtp.163.com";

}else if(USER.contains("@sina")) {

HOST = "smtp.sina.com.cn";

}else {

throw new EmailException("不支持该协议");

}

// props.setProperty("mail.smtp.host", HOST);//设置发送邮件的邮件服务器的属性（这里使用网易的smtp服务器）

// 设置邮件服务器主机名

props.setProperty("mail.host", HOST);

}

if(PWD==null||PWD.length()==0)throw new EmailException("邮箱密码不能为空");

props.setProperty("mail.transport.protocol", "smtp");// 发送邮件协议名称

props.setProperty("mail.smtp.auth", "true"); //需要经过授权，也就是有户名和密码的校验，这样才能通过验证（一定要有这一条）

// props.put("mail.debug", "true");//设置debug模式后台输出邮件发送的过程

MailSSLSocketFactory sf = new MailSSLSocketFactory();//ssl加密

sf.setTrustAllHosts(true);

props.put("mail.smtp.ssl.enable", "true");

props.put("mail.smtp.ssl.socketFactory", sf);

}

public void forwardMail(Message message) throws AddressException, MessagingException, EmailException, IOException {

if(TOS.length==0)throw new EmailException("收件人不能为空");

Session session = Session.getInstance(props);//用props对象构建一个session

// session.setDebug(true);//关闭控制台输出

MimeMessage newmessage = new MimeMessage(session);//用session为参数定义消息对象

newmessage.setSubject(message.getSubject());

newmessage.setFrom(new InternetAddress(FROM));

newmessage.setSentDate(new Date());

newmessage.setContent(message.getContent(), message.getContentType());

InternetAddress[] sendTo = new InternetAddress[TOS.length]; // 加载收件人地址

for (int i = 0; i < TOS.length; i++) {

sendTo[i] = new InternetAddress(TOS[i]);

}

newmessage.addRecipients(Message.RecipientType.TO,sendTo);

newmessage.addRecipients(MimeMessage.RecipientType.CC, InternetAddress.parse(FROM));//设置在发送给收信人之前给自己（发送方）抄送一份，不然会被当成垃圾邮件，报554错

Transport smtp = session.getTransport("smtp");

smtp.connect(HOST, USER, PWD);

smtp.sendMessage(newmessage, newmessage.getAllRecipients());

smtp.close();

}

/**

* @param path 需要添加附件的文件路径

* @throws EmailException

public void addFile(String...path) throws EmailException {

if(path==null||path.length==0)throw new EmailException("附件路径不能为空");

this.AFFIX = path;

}

public void setTo(String...to) throws EmailException {

if(toString().length()>0) {

for(String t : to) {

boolean emailFormat = emailFormat(t);

if(!emailFormat) {

throw new EmailException(t+"邮箱格式不正确");

}

TOS = to;

}else {

throw new EmailException("收件人不能为空");

}

/**

** 验证输入的邮箱格式是否符合

* @param email

* @return 是否合法

private boolean emailFormat(String email)

{

boolean tag = true;

final String pattern1 = "^([a-z0-9A-Z]+[-|\\.]?)+[a-z0-9A-Z]@([a-z0-9A-Z]+(-[a-z0-9A-Z]+)?\\.)+[a-zA-Z]{2,}$";

final Pattern pattern = Pattern.compile(pattern1);

final Matcher mat = pattern.matcher(email);

if (!mat.find()) {

tag = false;

}

return tag;

}

/**

* @param SUBJECT 标题

* @param context 文本信息

* @throws EmailException

* @throws MessagingException

* @throws AddressException

* @throws GeneralSecurityException

* @throws UnsupportedEncodingException

public void send(String SUBJECT,String context) throws EmailException, AddressException, MessagingException, GeneralSecurityException, UnsupportedEncodingException {

if(SUBJECT==null||SUBJECT.length()==0)SUBJECT=UUID.randomUUID().toString();

// this.SUBJECT = SUBJECT;//标题

if(TOS.length==0)throw new EmailException("收件人不能为空");

Session session = Session.getInstance(props);//用props对象构建一个session

// session.setDebug(true);//关闭控制台输出

MimeMessage message = new MimeMessage(session);//用session为参数定义消息对象

message.setFrom(new InternetAddress(FROM));// 加载发件人地址

InternetAddress[] sendTo = new InternetAddress[TOS.length]; // 加载收件人地址

for (int i = 0; i < TOS.length; i++) {

sendTo[i] = new InternetAddress(TOS[i]);

}

message.addRecipients(Message.RecipientType.TO,sendTo);

message.addRecipients(MimeMessage.RecipientType.CC, InternetAddress.parse(FROM));//设置在发送给收信人之前给自己（发送方）抄送一份，不然会被当成垃圾邮件，报554错

message.setSubject(SUBJECT);//加载标题

Multipart multipart = new MimeMultipart();//向multipart对象中添加邮件的各个部分内容，包括文本内容和附件

BodyPart contentPart = new MimeBodyPart();//设置邮件的文本内容

contentPart.setText(context);

multipart.addBodyPart(contentPart);

if(AFFIX!=null&&AFFIX.length>0){//添加附件

for(int i = 0 ; i

File file = new File(AFFIX[i]);

if(file.exists()) {

BodyPart messageBodyPart = new MimeBodyPart();

FileDataSource source = new FileDataSource(file);

// String AFFIXNAME = file.getName();

// System.out.println(AFFIXNAME);

messageBodyPart.setDataHandler(new DataHandler(source));//添加附件的内容

messageBodyPart.setFileName(MimeUtility.encodeWord(file.getName(), "GBK", null));

multipart.addBodyPart(messageBodyPart);

}else {

throw new EmailException("文件"+AFFIX[i]+"不存在");

}

message.setContent(multipart);//将multipart对象放到message中

message.saveChanges(); //保存邮件

Transport transport = session.getTransport();//发送邮件

transport.connect(HOST, USER, PWD);//连接服务器的邮箱

transport.sendMessage(message, message.getAllRecipients());//把邮件发送出去

transport.close();//关闭连接

}

File file = new File(AFFIX[i]);

if(file.exists()) {

BodyPart messageBodyPart = new MimeBodyPart();

FileDataSource source = new FileDataSource(file);

// String AFFIXNAME = file.getName();

// System.out.println(AFFIXNAME);

messageBodyPart.setDataHandler(new DataHandler(source));//添加附件的内容

messageBodyPart.setFileName(MimeUtility.encodeWord(file.getName(), "GBK", null));

multipart.addBodyPart(messageBodyPart);

}else {

throw new EmailException("文件"+AFFIX[i]+"不存在");

}

message.setContent(multipart);//将multipart对象放到message中

message.saveChanges(); //保存邮件

Transport transport = session.getTransport();//发送邮件

transport.connect(HOST, USER, PWD);//连接服务器的邮箱

transport.sendMessage(message, message.getAllRecipients());//把邮件发送出去

transport.close();//关闭连接

}

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