写在前面：

　　　　最近要将dms系统原始发邮件的功能(调用的webservice)改变成使用smtp服务来发送邮件(使用javamail来发送)，这里简单记录下，方便日后有用到，直接拿来用即可。

　　　　

　　　　首先导入需要用到的jar包：activation.jar  mail.jar

　　　　涉及到的相关类：

　　　　直接上代码了：

TestMail.java

package dms.newmail;

import java.util.Properties;

import javax.mail.Session;

import javax.mail.Transport;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import org.apache.struts.action.Action;

import org.apache.struts.action.ActionForm;

import org.apache.struts.action.ActionForward;

import org.apache.struts.action.ActionMapping;

public class TestMail {

    static String to = "cmm-dwcp-sw03@mail.foxconn.com";

    static String cc = "";

    public static void main(String[] args){

        String subject = "【DMS邮件测试】";

        String content = "Dear  all,\n\n" +

                "   DMS邮件功能测试！\n";

        MailService mailService = new MailServiceImpl();

        try {

            mailService.sendMail(to, cc,subject, content);

        } catch (Exception e) {

            e.printStackTrace();

        }

    }

}

　　如果是要在内容中含有超链接，只需要在内容中加上<html><body><a href=\"这里写链接\">测试</a></body></html>标签就好了(eg:<html><body><a href="http://10.203.70.189/spas">測試</a></body></html>)

　　MailService.java

package dms.newmail;

public interface MailService {

    /**

     * 发送邮件

     *

     * @param to      接收人

     * @param subject 邮件主题

     * @param content 邮件内容

     */

    void sendMail(String to, String subject, String content) throws Exception;

    void sendNoThreadMail(String to, String subject, String content);

    /**

     * 发送邮件

     * @param to 接收人

     * @param cc 抄送人

     * @param subject 邮件主题

     * @param content 邮件内容

     * @throws BusinessException

     */

    void sendMail(String to, String cc,String subject, String content) throws Exception;

}

　　MailServieImpl.java

package dms.newmail;

import org.apache.log4j.Logger;

import org.springframework.stereotype.Service;

import javax.annotation.Resource;

import javax.mail.MessagingException;

import javax.mail.Session;

import javax.mail.internet.MimeMessage;

public class MailServiceImpl implements MailService {

     private static Logger logger = Logger.getLogger(MailServiceImpl.class);

    public void sendMail(String to, String subject, String content) {

        MailThread mailThread = new MailThread(to, subject, content);

        System.out.println("to:" + to + "\nsubject:" + subject + "\n\ncontent:" + content);

        mailThread.setName("發送" + to + "郵件");

        mailThread.start();

    }

    public void sendNoThreadMail(String to, String subject, String content) {

        System.out.println("to:" + to + "\n,subject:" + subject + "\n\n,content:" + content);

        MailUtil mailUtil = new MailUtil();

        Session session = mailUtil.getSession();

        MimeMessage message = null;

        try {

            message = mailUtil.createSimpleMessage(session, to, subject, content);

        } catch (Exception e) {

            logger.error("创建邮件失败");

        }

        try {

            mailUtil.sendMessage(session, message);

        } catch (MessagingException e) {

            logger.error("连接不上SMTP服务器");

        }

        System.out.println("發送郵件成功");

    }

   /**

    * to:发送给(多个邮箱以;号隔开)

    * cc:抄送(多个邮箱以;号隔开)

    * subject:主题

    * content:内容

    */

    public void sendMail(String to, String cc, String subject, String content) throws Exception {

        MailThread mailThread = new MailThread(to, cc,subject, content);

//        System.out.println(to);

        mailThread.setName("發送" + to + "郵件"+"抄送给"+to);

        mailThread.start();

    }

}

　　MailThread.java

package dms.newmail;

import org.apache.log4j.Logger;

import javax.mail.MessagingException;

import javax.mail.Session;

import javax.mail.internet.MimeMessage;

public class MailThread extends Thread {

    private static Logger logger = Logger.getLogger(MailThread.class);

    private String to;

    private String subject;

    private String content;

    private String cc;

    public MailThread() {

    }

    public MailThread(String to, String subject, String content) {

        this.to = to;

        this.subject = subject;

        this.content = content;

    }

    public MailThread(String to, String cc, String subject, String content) {

        this.to = to;

        this.cc = cc;

        this.subject = subject;

        this.content = content;

    }

    public void run() {

        MailUtil mailUtil = new MailUtil();

        Session session = mailUtil.getSession();

        MimeMessage message = null;

        try {

            message = mailUtil.createSimpleMessage(session, to, cc, subject, content);

        } catch (Exception e) {

            logger.error("创建邮件失败");

        }

        try {

            mailUtil.sendMessage(session, message);

        } catch (MessagingException e) {

            logger.error("连接不上SMTP服务器");

        }

        System.out.println("發送郵件成功");

    }

}

　　MailUtil.java

package dms.newmail;

import javax.mail.Message;

import javax.mail.MessagingException;

import javax.mail.Session;

import javax.mail.Transport;

import javax.mail.internet.InternetAddress;

import javax.mail.internet.MimeMessage;

import java.util.*;

public class MailUtil {

    //smtp服务器

    public static final String SMTP_HOST = "10.134.28.95";

    public static final String USER_NAME = "dmd.admin@foxconn.com";

    public static final String PASS_WORD = "";

    /**

     * 获取邮件会话

     *

     * @return

     */

    public Session getSession() {

        Properties prop = new Properties();

        prop.setProperty("mail.host", SMTP_HOST);

        prop.setProperty("mail.transport.protocol", "smtp");

        prop.setProperty("mail.smtp.auth", "false");

        //使用JavaMail发送邮件的5个步骤

        //1、创建session

        Session session = Session.getInstance(prop);

        //开启Session的debug模式，这样就可以查看到程序发送Email的运行状态

        session.setDebug(true);

        return session;

    }

    /**

     * 创建简单文本

     *

     * @param session

     * @param to

     * @param subject

     * @param content

     * @return

     */

    public MimeMessage createSimpleMessage(Session session, String to, String subject, String content) throws Exception {

        MimeMessage message = null;

        message = getMessage(session, to, subject);

        message.setText(content, "UTF-8");

        return message;

    }

    public MimeMessage createSimpleMessage(Session session, String to, String cc, String subject, String content) throws Exception {

        MimeMessage message = null;

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

            message = getMessage(session, to, subject);

        } else {

            message = getMessage(session, to, cc, subject);

        }

        message.setText(content, "UTF-8");

        return message;

    }

    /**

     * 获取邮件对象

     *

     * @param session 邮件会话

     * @param to      收件人

     * @param subject 邮件主题

     * @return

     * @throws Exception

     */

    private MimeMessage getMessage(Session session, String to, String subject) throws Exception {

        //创建邮件对象

        MimeMessage message = new MimeMessage(session);

        //指明邮件的发件人

        message.setFrom(new InternetAddress(USER_NAME));

        String[] addresses = to.split(";");

        Set addSet = new HashSet();

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

            if (!"".equals(addresses[i].trim()))

                addSet.add(addresses[i].trim());

        }

        InternetAddress[] internetAddresses = new InternetAddress[addSet.size()];

        Iterator iterable = addSet.iterator();

        for (int i = 0; i < addSet.size(); i++) {

            internetAddresses[i] = new InternetAddress((String) iterable.next());

        }

        //指明邮件的收件人，现在发件人和收件人是一样的，那就是自己给自己发

        message.setRecipients(Message.RecipientType.TO, internetAddresses);

        //邮件的标题

        message.setSubject(subject, "UTF-8");

        message.setSentDate(new Date(System.currentTimeMillis()));

        //返回创建好的邮件对象

        return message;

    }

    /**

     * @param session

     * @param to      收件人

     * @param cc      抄送人

     * @param subject 邮件主题

     * @return

     * @throws Exception

     */

    private MimeMessage getMessage(Session session, String to, String cc, String subject) throws Exception {

        //创建邮件对象

        MimeMessage message = new MimeMessage(session);

        //指明邮件的发件人

        message.setFrom(new InternetAddress(USER_NAME));

        String[] addresses = to.split(";");

        String[] addresses2 = cc.split(";");

        Set addSet = new HashSet();

        Set addSet2 = new HashSet();

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

            if (!"".equals(addresses[i].trim()))

                addSet.add(addresses[i].trim());

        }

        for(int i=0;i<addresses2.length;i++){

            if (!"".equals(addresses2[i].trim()))

                addSet2.add(addresses2[i].trim());

        }

        InternetAddress[] internetAddresses = new InternetAddress[addSet.size()];

        Iterator iterable = addSet.iterator();

        for (int i = 0; i < addSet.size(); i++) {

            internetAddresses[i] = new InternetAddress((String) iterable.next());

        }

        InternetAddress[] internetAddresses2 = new InternetAddress[addSet2.size()];

        Iterator iterable2 = addSet2.iterator();

        for (int i = 0; i < addSet2.size(); i++) {

            internetAddresses2[i] = new InternetAddress((String) iterable2.next());

        }

        //指明邮件的收件人，现在发件人和收件人是一样的，那就是自己给自己发

        message.setRecipients(Message.RecipientType.TO, internetAddresses);

        message.setRecipients(Message.RecipientType.CC, internetAddresses2);

        //邮件的标题

        message.setSubject(subject, "UTF-8");

        message.setSentDate(new Date(System.currentTimeMillis()));

        //返回创建好的邮件对象

        return message;

    }

    /**

     * 发送邮件

     *

     * @param session 邮件会话

     * @param message 邮件

     * @throws MessagingException

     */

    public void sendMessage(Session session, Message message) throws MessagingException {

        //2、通过session得到transport对象

        Transport ts = session.getTransport();

        //3、使用邮箱的用户名和密码连上邮件服务器，发送邮件时，发件人需要提交邮箱的用户名和密码给smtp服务器，用户名和密码都通过验证之后才能够正常发送邮件给收件人。

        ts.connect(SMTP_HOST,USER_NAME,PASS_WORD);

//        ts.connect();

        //5、发送邮件

        if (null != message)

            ts.sendMessage(message, message.getAllRecipients());

        ts.close();

    }

}

　　LogUtil.java:

package dms.newmail;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

import java.io.PrintWriter;

import java.io.StringWriter;

public class LogUtil {

    private static Logger logger = LoggerFactory.getLogger(LogUtil.class);

    public static String getTrace(Throwable throwable) {

        StringWriter stringWriter = new StringWriter();

        PrintWriter printWriter = new PrintWriter(stringWriter);

        throwable.printStackTrace(printWriter);

        StringBuffer stringBuffer = stringWriter.getBuffer();

        return stringBuffer.toString();

    }

    public static void main(String[] args) {

        String  strTrace=getTrace(new Throwable());

        System.out.println(strTrace);

        new Throwable().printStackTrace();

    }

}

　　

　　好啦，代码搬运完成啦~~~

　　这一块主要还是斌哥在spas写好的，这边dms用到我只是拿现成的啦~~

　　参考链接：https://www.cnblogs.com/xdp-gacl/p/4216311.html-----JavaWeb学习总结(五十二)——使用JavaMail创建邮件和发送邮件

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