Java 郵件發送Demo

一、首先在項目中導入jar包，我用的是mail-1.4.jar

二、一下是個人代碼：

public class SendMailUtil {

private static final Logger logger = Logger.getLogger(SendMailUtil.class);

// 定義發件人、收件人、主題等

private String to = null;// 收件人郵箱地址

private String from = null;// 發件人郵箱地址

private String password = null;//發件人密碼

private String host = null;//郵件服務器

private String filename = null;

// 用於保存發送附件的文件路徑名的集合

private Vector<String> fileList = new Vector<String>();

/*

* 能夠傳發件人等參數的構造

*/

public SendMailUtil(String to, String from, String password,

String smtpServer) {

// 初始化發件人、收件人、主題等

this.to = to;

this.from = from;

this.password = password;

this.host = smtpServer;

}

/*

* 該方法用於收集附件名

*/

public void attachfile(String fname) {

fileList.addElement(fname);

}

/*

* 開始發送信件的方法

*/

public boolean startSend(String emailTitle, String emailContent) {

if (StringUtils.isBlank(emailContent)) {

logger.error("郵件內容不能爲空！");

return false;

}

try {

if (StringUtils.isBlank(emailContent)) {

throw new NullPointerException("發送的內容不能爲空！");

}

// 建立Properties對象

Properties props = System.getProperties();

// 建立信件服務器

props.put("mail.smtp.auth", "true");

props.put("mail.smtp.host", host);

props.put("mail.smtp.password", "0");

// 獲得默認的對話對象

Session session = Session.getInstance(props,

new PopupAuthenticator(this.from, this.password));

// 建立一個消息，並初始化該消息的各項元素

MimeMessage msg = new MimeMessage(session);

msg.setFrom(new InternetAddress(from));

InternetAddress[] address = { new InternetAddress(to) };

msg.setRecipients(Message.RecipientType.TO, address);

// getBytes("ISO-8859-1")

// String title=new String(emailTitle.getBytes("ISO-8859-1"),"GBK");

msg.setSubject(emailTitle);

// 後面的BodyPart將加入到此處建立的Multipart中

Multipart mp = new MimeMultipart("subtype");

// 添加HTML正文

BodyPart htmlBody = new MimeBodyPart();

MimeMultipart htmlContent = new MimeMultipart("related");

BodyPart msgContent = new MimeBodyPart();

htmlContent.addBodyPart(msgContent);

msgContent.setContent(emailContent, "text/html;charset=utf-8");

htmlBody.setContent(htmlContent);

mp.addBodyPart(htmlBody);

// 利用枚舉器方便的遍歷集合

Enumeration efile = fileList.elements();

// 檢查序列中是否還有更多的對象

while (efile.hasMoreElements()) {

MimeBodyPart mbp = new MimeBodyPart();

// 選擇出每個附件名

filename = efile.nextElement().toString();

// 獲得數據源

FileDataSource fds = new FileDataSource(filename);

// 獲得附件自己並至入BodyPart

mbp.setDataHandler(new DataHandler(fds));

// 獲得文件名一樣至入BodyPart

mbp.setFileName(fds.getName());

mp.addBodyPart(mbp);

}

// 移走集合中的全部元素

fileList.removeAllElements();

// Multipart加入到信件

msg.setContent(mp);

// 設置信件頭的發送日期

msg.setSentDate(new Date());

// 發送信件

Transport.send(msg);

} catch (Exception e) {

e.printStackTrace();

return false;

}

return true;

}

// 認證類

class PopupAuthenticator extends Authenticator {

private String username ;

private String password ;

public PopupAuthenticator(String user, String pass) {

this.username = user;

this.password = pass;

}

protected PasswordAuthentication getPasswordAuthentication() {

return new PasswordAuthentication(username, password);

}

}

//測試

public static void main(String[] args) {

SendMailUtil mail = new SendMailUtil("qinkui_java@163.com",

"test@163.com","123456", "smtp.163.com");

mail.attachfile("C:\\Users\\awen\\Desktop\\a.txt");

mail.startSend("交接文檔","收到請回復");

System.out.println("郵件發送完成...");

}

三、測試成功，你們能夠試一下。