java 实现群发邮件
package sendemail;
import java.io.UnsupportedEncodingException;
import java.util.Properties;
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.InternetAddress;
import javax.mail.internet.MimeBodyPart;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeMultipart;
import javax.mail.internet.MimeUtility;
/**
* 邮件管理器
* file: SendEmail.java
* Description:
* Company:策康金服 www.ckjsd.cn
* @author 商晓卫
* @date 2017年7月12日 下午2:07:26
*/
public class SendEmail {
public static String username = "xxxxxxxxx@163.com"; // 服务邮箱
public static String password = "******"; // 邮箱密码
public static String senderNick = "策康金融"; // 发件人昵称
private Properties props; // 系统属性
private Session session; // 邮件会话对象
private MimeMessage mimeMsg; // MIME邮件对象
private Multipart mp; // Multipart对象,邮件内容,标题,附件等内容均添加到其中后再生成MimeMessage对象
private static SendEmail instance = null;
public SendEmail() {
props = System.getProperties();
props.put("mail.smtp.auth", "true");
props.put("mail.transport.protocol", "smtp");
props.put("mail.smtp.host", "smtp.163.com");
props.put("mail.smtp.port", "25");
props.put("username", username);
props.put("password", password);
// 建立会话
session = Session.getDefaultInstance(props);
session.setDebug(false);
}
public static SendEmail getInstance() {
if (instance == null) {
instance = new SendEmail();
}
return instance;
}
/**
* 发送邮件
* @param from 发件人
* @param to 收件人
* @param copyto 抄送
* @param subject 主题
* @param content 内容
* @param fileList 附件列表
* @return
*/
public boolean sendMail(String from, String[] to, String[] copyto, String subject, String content, String[] fileList) {
boolean success = true;
try {
mimeMsg = new MimeMessage(session);
mp = new MimeMultipart();
// 自定义发件人昵称
String nick = "";
try {
nick = javax.mail.internet.MimeUtility.encodeText(senderNick);
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
// 设置发件人
// mimeMsg.setFrom(new InternetAddress(from));
mimeMsg.setFrom(new InternetAddress(from, nick));
// 设置收件人
if (to != null && to.length > 0) {
String toListStr = getMailList(to);
mimeMsg.setRecipients(Message.RecipientType.TO, InternetAddress.parse(toListStr));
}
// 设置抄送人
if (copyto != null && copyto.length > 0) {
String ccListStr = getMailList(copyto);
mimeMsg.setRecipients(Message.RecipientType.CC, InternetAddress.parse(ccListStr));
}
// 设置主题
mimeMsg.setSubject(subject);
// 设置正文
BodyPart bp = new MimeBodyPart();
bp.setContent(content, "text/html;charset=utf-8");
mp.addBodyPart(bp);
// 设置附件
if (fileList != null && fileList.length > 0) {
for (int i = 0; i < fileList.length; i++) {
bp = new MimeBodyPart();
FileDataSource fds = new FileDataSource(fileList[i]);
bp.setDataHandler(new DataHandler(fds));
bp.setFileName(MimeUtility.encodeText(fds.getName(), "UTF-8", "B"));
mp.addBodyPart(bp);
}
}
mimeMsg.setContent(mp);
mimeMsg.saveChanges();
// 发送邮件
if (props.get("mail.smtp.auth").equals("true")) {
Transport transport = session.getTransport("smtp");
transport.connect((String)props.get("mail.smtp.host"), (String)props.get("username"), (String)props.get("password"));
// transport.sendMessage(mimeMsg, mimeMsg.getRecipients(Message.RecipientType.TO));
// transport.sendMessage(mimeMsg, mimeMsg.getRecipients(Message.RecipientType.CC));
transport.sendMessage(mimeMsg, mimeMsg.getAllRecipients());
transport.close();
} else {
Transport.send(mimeMsg);
}
System.out.println("邮件发送成功");
} catch (MessagingException e) {
e.printStackTrace();
success = false;
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
success = false;
}
return success;
}
/**
* 发送邮件
* @param from 发件人
* @param to 收件人, 多个Email以英文逗号分隔
* @param cc 抄送, 多个Email以英文逗号分隔
* @param subject 主题
* @param content 内容
* @param fileList 附件列表
* @return
*/
public boolean sendMail(String from, String to, String cc, String subject, String content, String[] fileList) {
boolean success = true;
try {
mimeMsg = new MimeMessage(session);
mp = new MimeMultipart();
// 自定义发件人昵称
String nick = "";
try {
nick = javax.mail.internet.MimeUtility.encodeText(senderNick);
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
// 设置发件人
// mimeMsg.setFrom(new InternetAddress(from));
mimeMsg.setFrom(new InternetAddress(from, nick));
// 设置收件人
if (to != null && to.length() > 0) {
mimeMsg.setRecipients(Message.RecipientType.TO, InternetAddress.parse(to));
}
// 设置抄送人
if (cc != null && cc.length() > 0) {
mimeMsg.setRecipients(Message.RecipientType.CC, InternetAddress.parse(cc));
}
// 设置主题
mimeMsg.setSubject(subject);
// 设置正文
BodyPart bp = new MimeBodyPart();
bp.setContent(content, "text/html;charset=utf-8");
mp.addBodyPart(bp);
// 设置附件
if (fileList != null && fileList.length > 0) {
for (int i = 0; i < fileList.length; i++) {
bp = new MimeBodyPart();
FileDataSource fds = new FileDataSource(fileList[i]);
bp.setDataHandler(new DataHandler(fds));
bp.setFileName(MimeUtility.encodeText(fds.getName(), "UTF-8", "B"));
mp.addBodyPart(bp);
}
}
mimeMsg.setContent(mp);
mimeMsg.saveChanges();
// 发送邮件
if (props.get("mail.smtp.auth").equals("true")) {
Transport transport = session.getTransport("smtp");
transport.connect((String)props.get("mail.smtp.host"), (String)props.get("username"), (String)props.get("password"));
transport.sendMessage(mimeMsg, mimeMsg.getAllRecipients());
transport.close();
} else {
Transport.send(mimeMsg);
}
System.out.println("邮件发送成功");
} catch (MessagingException e) {
e.printStackTrace();
success = false;
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
success = false;
}
return success;
}
public String getMailList(String[] mailArray) {
StringBuffer toList = new StringBuffer();
int length = mailArray.length;
if (mailArray != null && length < 2) {
toList.append(mailArray[0]);
} else {
for (int i = 0; i < length; i++) {
toList.append(mailArray[i]);
if (i != (length - 1)) {
toList.append(",");
}
}
}
return toList.toString();
}
public static void main(String[] args) {
String from = username;
String[] to = {"xxxxx@qq.com","xxxxx@qq.com"};
String[] copyto = {"123456@163.com"};
String subject = "测试一下";
String content = "这是邮件内容，仅仅是测试，不需要回复.";
String[] fileList = new String[1];
fileList[0] = "F:/zxing.jpg";
SendEmail.getInstance().sendMail(from, to, copyto, subject, content, fileList);
}
}
