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JAVA运用IMAP、POP3、SMTP协议收发邮件

www.myexceptions.net  网友分享于：2013-11-08  浏览：645次

JAVA使用IMAP、POP3、SMTP协议收发邮件

package com.gatgets.mail;

import java.io.UnsupportedEncodingException;

import java.util.Date;

import java.util.Properties;

import javax.mail.Authenticator;

import javax.mail.FetchProfile;

import javax.mail.Folder;

import javax.mail.Message;

import javax.mail.Message.RecipientType;

import javax.mail.PasswordAuthentication;

import javax.mail.Session;

import javax.mail.Store;

import javax.mail.Transport;

import javax.mail.internet.InternetAddress;

import javax.mail.internet.MimeMessage;

import javax.mail.internet.MimeUtility;

/**

* 邮件工具类

* 需要导入mail.jar包(j2ee自带)

* @author 王正镇

* @date 2011-8-14

*/

public class EmailUtil {

private String username = null; // 邮箱用户名

private String password = null; // 邮箱密码

/**

* 传入自己的邮箱用户名和密码

* @param username

* @param password

*/

public EmailUtil(String username, String password) {

this.username = username;

this.password = password;

}

/**

* 创建连接会话

* @param props

* @return

*/

public Session createSession(Properties props) {

Session session = Session.getInstance(props, new Authenticator() {

// 返回用户名密码认证

@Override

public PasswordAuthentication getPasswordAuthentication() {

PasswordAuthentication pa = new PasswordAuthentication(username, password);

return pa;

}

});

return session;

}

/**

* 发送邮件(需设置SMTP)

* @throws Exception

*/

public void sendMail(Properties props, SendEmailMessage sem) throws Exception {

Session session = createSession(props);

// 消息

Message msg = new MimeMessage(session);

msg.setFrom(InternetAddress.parse(MimeUtility.decodeText(sem.getFrom()))[0]);

// TO为初级收件人，CC为邮件副本抄送，BCC应该是密秘抄送吧

msg.setRecipients(RecipientType.TO, InternetAddress.parse(sem.getRecipient()));

msg.setSubject(sem.getSubject());

msg.setText(sem.getText());

msg.setSentDate(new Date());

// 发送消息

Transport.send(msg);

}

/**

* 接收邮件(需设置POP3或SAMP)

* @throws Exception

*/

public void receiveMail(Properties props, String protocol) throws Exception {

Session session = createSession(props);

Store store = session.getStore(protocol);

store.connect(); // 连接

Folder inbox = store.getFolder("INBOX"); // 进入根目录

inbox.open(Folder.READ_WRITE); // 只读方式

FetchProfile profile = new FetchProfile();

profile.add(FetchProfile.Item.ENVELOPE); // 获取信封

Message[] msgs = inbox.getMessages(); // 得到所有邮件

inbox.fetch(msgs, profile); // 预获取信息

// 打印

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

System.out.println("发送时间：" + msgs[i].getSentDate());

System.out.println("发送人：" + decodeText(msgs[i].getFrom()[0].toString()));

System.out.println("大小：" + msgs[i].getSize());

System.out.println("标题：" + msgs[i].getSubject());

System.out.println("内容" + msgs[i].getContent());

System.out.println("-------------------");

}

store.close();

}

/**

* 处理中文编码问题

* @param text

* @return

* @throws UnsupportedEncodingException

*/

private String decodeText(String text) throws UnsupportedEncodingException {

if (text == null) {

return null;

}

if (text.startsWith("=?GB") || text.startsWith("=?gb"))

text = MimeUtility.decodeText(text);

else

text = new String(text.getBytes("ISO8859_1"));

return text;

}

}

package com.gatgets.mail;

import java.util.Properties;

/**

* 邮件默认配置类

* 方法中的必要参好，可根据实际情况修改

* @author 王正镇

* @date 2011-8-14

*/

public class DefaultConfigurer {

/**

* 获取SMTP默认配置

* @return

*/

public static Properties getSMTP() {

Properties p = new Properties();

p.setProperty("mail.smtp.host", "smtp.qq.com"); // 按需要更改

p.setProperty("mail.smtp.protocol", "smtp");

p.setProperty("mail.smtp.port", "465");

p.setProperty("mail.smtp.auth", "true");

// SSL安全连接参数

p.setProperty("mail.smtp.socketFactory.class", "javax.net.ssl.SSLSocketFactory");

p.setProperty("mail.smtp.socketFactory.fallback", "false");

p.setProperty("mail.smtp.socketFactory.port", "465");

return p;

}

/**

* 获取POP3收信配置

* @return

*/

public static Properties getPOP3() {

Properties p = new Properties();

p.setProperty("mail.pop3.host", "pop.qq.com"); // 按需要更改

p.setProperty("mail.pop3.port", "995");

// SSL安全连接参数

p.setProperty("mail.pop3.socketFactory.class", "javax.net.ssl.SSLSocketFactory");

p.setProperty("mail.pop3.socketFactory.fallback", "false");

p.setProperty("mail.pop3.socketFactory.port", "995");

return p;}

/**

* 获取IMAP收信配置

* @return

*/

public static Properties getIMAP() {

Properties p = new Properties();

p.setProperty("mail.imap.host", "imap.qq.com"); // 按需要更改

p.setProperty("mail.imap.port", "993");

// SSL安全连接参数

p.setProperty("mail.imap.socketFactory.class", "javax.net.ssl.SSLSocketFactory");

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

p.setProperty("mail.imap.socketFactory.port", "993");

return p;}

}

package com.gatgets.mail;

/**

* 发送邮件消息包装属性类

*

* @author 王正镇

* @date 2011-8-14

*/

public class SendEmailMessage {

private String type; // 格式类型，如 text/html;charset=gbk

private String from; // 发送人

private String subject; // 标题

private String text; // 内容

private String recipient; // 接收人，多个接收人用逗号分隔

private String datetime; // 发送时间

public String getFrom() {

return from;

}

public void setFrom(String from) {

this.from = from;

}

public String getSubject() {

return subject;

}

public void setSubject(String subject) {

this.subject = subject;

}

public String getText() {

return text;

}

public void setText(String text) {

this.text = text;

}

public String getRecipient() {

return recipient;

}

public void setRecipient(String recipient) {

this.recipient = recipient;

}

public String getDatetime() {

return datetime;

}

public void setDatetime(String datetime) {

this.datetime = datetime;

}

public String getType() {

return type;

}

public void setType(String type) {

this.type = type;

}

}

package com.gatgets.mail;

/**

* 测试类

* @author 王正镇

* @date 2011-8-14

*/

public class TestEmail {

/**

* 程序入口点

* @param args

* @throws Exception

*/

public static void main(String[] args) throws Exception {

// 默认情况下，在这里输入QQ号和密码，便可收信与发信

EmailUtil eu = new EmailUtil("xxx", "xxx");

SendEmailMessage sem = new SendEmailMessage();

sem.setFrom("wzz");

sem.setRecipient("xxx@qq.com,zzz@163.com");

sem.setSubject("镇长");

sem.setText("hello world");

eu.sendMail(DefaultConfigurer.getSMTP(), sem);

System.out.println("发送成功");

// 收邮件

eu.receiveMail(DefaultConfigurer.getPOP3(), "pop3"); // pop3收信

System.out.println("收取完毕");

// 使用IMAP收信会抛出 Failed to load IMAP envelope 异常

//eu.receiveMail(DefaultConfigurer.getIMAP(), "imap"); // imap收信

}

}

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