背景：

由于需要给合作方以压缩包的形式每天返回数据，基于我们自己写的分布式程序，而月末通过返回的数据，来与合作方进行对账，所以每天数据返回的成败就至关重要了，但又懒得每天去查看日志，刚好借助一下公司内部的邮件服务器。

go、go、go

package test.util;import org.apache.log4j.Logger;import javax.activation.DataHandler;
import javax.activation.FileDataSource;
import javax.mail.*;
import javax.mail.internet.*;
import java.io.UnsupportedEncodingException;
import java.util.Date;
import java.util.Properties;/*** Created by shengjk1 on 2016/11/4.* Blog Address:http://blog.csdn.net/jsjsjs1789*/
public class SendMail {private static Logger logger = Logger.getLogger(SendMail.class);private static SendMail instance = null;private SendMail() {}public static SendMail getInstance() {if (instance == null) {instance = new SendMail();}return instance;}public void send(String to[], String cs[], String ms[], String subject,String content, String formEmail, String fileList[]) {try {Properties p = new Properties(); // Properties p =// System.getProperties();p.put("mail.smtp.auth", "true");p.put("mail.transport.protocol", "smtp");p.put("mail.smtp.host", "xxxxx");//邮件服务器的地址p.put("mail.smtp.port", "25");// 建立会话Session session = Session.getInstance(p);Message msg = new MimeMessage(session); // 建立信息BodyPart messageBodyPart = new MimeBodyPart();Multipart multipart = new MimeMultipart();msg.setFrom(new InternetAddress(formEmail)); // 发件人String toList = null;String toListcs = null;String toListms = null;// 发送,if (to != null) {toList = getMailList(to);new InternetAddress();InternetAddress[] iaToList = InternetAddress.parse(toList);msg.setRecipients(Message.RecipientType.TO, iaToList); // 收件人}// 抄送if (cs != null) {toListcs = getMailList(cs);new InternetAddress();InternetAddress[] iaToListcs = InternetAddress.parse(toListcs);msg.setRecipients(Message.RecipientType.CC, iaToListcs); // 抄送人}// 密送if (ms != null) {toListms = getMailList(ms);new InternetAddress();InternetAddress[] iaToListms = InternetAddress.parse(toListms);msg.setRecipients(Message.RecipientType.BCC, iaToListms); // 密送人}msg.setSentDate(new Date()); // 发送日期msg.setSubject(subject); // 主题msg.setText(content); // 内容// 显示以html格式的文本内容messageBodyPart.setContent(content, "text/html;charset=utf-8");multipart.addBodyPart(messageBodyPart);// 2.保存多个附件if (fileList != null) {addTach(fileList, multipart);}msg.setContent(multipart);// 邮件服务器进行验证Transport tran = session.getTransport("smtp");tran.connect("xxx", //邮件服务器地址 "shengjk1@xxx.cn",//邮箱地址"p@ssw0rd");//邮箱的密码tran.sendMessage(msg, msg.getAllRecipients()); // 发送System.out.println("邮件发送成功");} catch (Exception e) {logger.info("邮件发送时异常",e);}}// 添加多个附件public void addTach(String fileList[], Multipart multipart)throws MessagingException, UnsupportedEncodingException {for (int index = 0; index < fileList.length; index++) {MimeBodyPart mailArchieve = new MimeBodyPart();FileDataSource fds = new FileDataSource(fileList[index]);mailArchieve.setDataHandler(new DataHandler(fds));mailArchieve.setFileName(MimeUtility.encodeText(fds.getName(),"utf-8", "B"));multipart.addBodyPart(mailArchieve);}}private 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 forSend(String subject,String content){SendMail send = SendMail.getInstance();String to[] = { "shengjk1@xxx.cn"};//收件人的地址String cs[] = null;String ms[] = null;if(content==null||content.length()==0){content = "这是邮件内容，仅仅是测试，不需要回复";}String fromEmail = "shengjk1@xxx.cn";//发件人的地址String[] arrArchievList = null;// 2.保存多个附件send.send(to, cs, ms, subject, content, fromEmail, arrArchievList);}//  public static void main(String args[]) {//      forSend(null);
//  }}

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pom.xml文件

<dependency><groupId>javax.mail</groupId><artifactId>mail</artifactId><version>1.4</version></dependency>

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