JavaMail实现邮件的发送

 

1、引入相关的Jar包：

activation.jar、cos.jar、mail.jar

<dependency>
        <groupId>com.alibaba.external</groupId>
        <artifactId>java.activation</artifactId>
        <version>1.1</version>
    </dependency>
    <dependency>
        <groupId>com.alibaba.external</groupId>
        <artifactId>java.mail</artifactId>
        <version>1.4.3</version>
    </dependency>
    <dependency>
        <groupId>com.alibaba.external</groupId>
        <artifactId>java.servlet</artifactId>
        <version>2.5</version>
    </dependency>

2、相关的发送代码

import java.io.IOException;
import java.io.PrintWriter;
import java.util.Date;
import java.util.Properties;

import javax.mail.Address;
import javax.mail.Message;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class SEND extends HttpServlet {

    public SEND() {
        super();
    }

    public void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {

        response.setContentType("text/html");
        PrintWriter out = response.getWriter();
        request.setCharacterEncoding("gb2312");
        String from = request.getParameter("from");
        String to = request.getParameter("to");
        String subject = request.getParameter("subject");
        String context = request.getParameter("context");
        // 确定要发送的邮件服务器的地址
        String mailserver = "d9e307714c5044f";
        // 设置邮件的传输协议
        try {
            Properties prop = System.getProperties();
            prop.put("mail.smtp.host", mailserver);
            // 建立邮件发送的连接
            Session session = Session.getDefaultInstance(prop, null);
            // 创建发送的信息的载体
            Message msg = new MimeMessage(session);
            // 设置相关的邮件属性
            msg.setFrom(new InternetAddress(from));
            // 点到点的发送
            msg.setRecipient(Message.RecipientType.TO, new InternetAddress(to));
            /*
             * //群发 msg.setRecipients(Message.RecipientType.TO, new
             * InternetAddress[]{new InternetAddress(to),new
             * InternetAddress(to)}); //借助循环的标准发送
             */
            msg.setSubject(subject);
            msg.setSentDate(new Date());
            msg.setText(context);
            // 发送
            Transport.send(msg);
        } catch (Exception e) {

        }

        out.print("send ok");
        out.flush();
        out.close();
    }

}

cmainserver下载：http://www.onlinedown.net/softdown/9044_2.htm 

 安装好了之后，执行如下步骤：开始->控制面板->管理工具->Internet 信息服务， 在启动的“Internet 信息服务”下面，找到“默认站点”， 右键点击“新建”->“虚拟目录”， 随便取个别名（比如mail）， 在“目录”处浏览到cmainserver安装目录下面的webmail（比如：D:\ProgramFiles\CMailServer\webmail）。 在启动之后，即可通过http访问mail的网站了。

3、使用JavaMail在邮件中发送图片 

本例参考：http://topic.csdn.net/t/20051012/09/4320650.html

带附件的参考：http://www.blogjava.net/sunfruit/archive/2006/10/24/77086.html

图片的保存与显示，参考：http://www.blogjava.net/PrettyBoyCyb/archive/2006/11/13/80922.html

javax.mail总结：http://lgcjar.javaeye.com/blog/511127

package com.alibaba.annotation.client;

import java.util.Properties;
import java.util.Date;
import javax.mail.*;
import javax.mail.internet.*;
import javax.activation.*;

public class Test {

    /**
     * @param args
     */
    public static void main(String[] args) throws Exception {
        sendhtml(args);
    }

    public static void sendhtml(String[] argv) throws Exception {

        String to = "[email protected] ";
        String subject = "null ";
        String from = "[email protected] ";
        String cc = null;
        String bcc = null;
        String mailhost = "smtp.163.com ";
        boolean debug = false;
        String username = "abcdef ";
        String password = "123456 ";
        Properties props = System.getProperties();
        props.put("mail.smtp.auth ", "true ");
        SMTPAuth auth = new SMTPAuth(username, password);
        // could use Session.getTransport() and Transport.connect()
        // assume we 're using SMTP
        if (mailhost != null)
            props.put("mail.smtp.host ", mailhost);

        // Get a Session object
        Session session = Session.getDefaultInstance(props, auth);
        if (debug)
            session.setDebug(true);

        // construct the message
        Message msg = new MimeMessage(session);
        if (from != null)
            msg.setFrom(new InternetAddress(from));
        else
            msg.setFrom();

        msg.setRecipients(Message.RecipientType.TO, InternetAddress.parse(to,
                false));
        if (cc != null)
            msg.setRecipients(Message.RecipientType.CC, InternetAddress.parse(
                    cc, false));
        if (bcc != null)
            msg.setRecipients(Message.RecipientType.BCC, InternetAddress.parse(
                    bcc, false));

        msg.setSubject(subject);

        MimeBodyPart mbp1 = new MimeBodyPart();
        String html = " <!DOCTYPE   HTML   PUBLIC   \"-//W3C//DTD   HTML   4.0   Transitional//EN\"> "
                + " <html> "
                + " <head> <title> </title> </head> "
                + " <body> "
                + " <b>   see   the   following   jpg   :   it   is   a   car! </b> <br> "
                + " <a   href=http://www.a.com/a.jsp> hello </a> <br> "
                + " <IMG   SRC=cid:7e2a34e1.jpg   width=80%   height=60%> <br> "
                + " <b>   end   of   jpg </b> " + " </body> " + " </html> ";

        mbp1.setContent(html, "text/html ");

        FileDataSource fds = new FileDataSource("c:/7e2a34e1.jpg ");
        MimeBodyPart mbp2 = new MimeBodyPart();
        mbp2.setFileName(fds.getName());
        mbp2.setText("This   is   a   beautiful   car   ! ");
        mbp2.setDataHandler(new DataHandler(fds));
        //mbp2.setHeader("Content-ID ", fds.getName());
        mbp2.setHeader( "Content-ID ",   " < "   +   fds.getName()   +   "> ");
        MimeMultipart mp = new MimeMultipart("related ");// alternative
        mp.addBodyPart(mbp1);
        mp.addBodyPart(mbp2);
        msg.setContent(mp);

        msg.setSentDate(new Date());
        Transport.send(msg);
        System.out.println(mp.getCount());
        System.out.println("\nMail   was   sent   successfully. ");

    }
}

class SMTPAuth extends javax.mail.Authenticator {
    private String user, password;

    public SMTPAuth(String u, String p) {
        user = u;
        password = p;
    }

    public void getuserinfo(String getuser, String getpassword) {
        user = getuser;
        password = getpassword;
    }

    protected javax.mail.PasswordAuthentication getPasswordAuthentication() {
        return new javax.mail.PasswordAuthentication(user, password);
    }

}

【注意】

1、经测试通过的程序

package com.company.demoes;

import java.util.Properties;

import javax.activation.DataHandler;
import javax.activation.FileDataSource;
import javax.mail.BodyPart;
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;

/**
 * 本程序用java来实现Email的发送，所用到的协议为：SMTP，端口号为25；<br>
 * 方法：用Socket进行实现，打开客户端的Socket，并连接上服务器：<br>
 * 如：Socket sockClient = new Socket("smtp.qq.com",23);<br>
 * 这表示发件方连接的是QQ邮箱的服务器，端口号为23
 *
 */
public class Email {
    /**
     * 整个MIME邮件对象
     */
    private MimeMessage mimeMsg;
    /**
     * 专门用来发送邮件的Session会话
     */
    private Session session;
    /**
     * 封装邮件发送时的一些配置信息的一个属性对象
     */
    private Properties props;
    /**
     * 发件人的用户名
     */
    private String username;
    /**
     * 发件人的密码
     */
    private String password;
    /**
     * 用来实现附件添加的组件
     */
    private Multipart mp;

    /**
     * 发送参数初始化,有的服务器不需要用户验证，所以这里对用户名和密码进行初始化""
     *
     * @param smtp
     *            SMTP服务器的地址，比如要用QQ邮箱，哪么应为："smtp.qq.com"，163为： "smtp.163.com"
     */
    public Email(String smtp) {
        username = "";
        password = "";
        // 设置邮件服务器
        setSmtpHost(smtp);
        // 创建邮件
        createMimeMessage();
    }

    /**
     * 设置发送邮件的主机(JavaMail需要Properties来创建一个session对象。
     * 它将寻找字符串"mail.smtp.host"，属性值就是发送邮件的主机);
     *
     * @param hostName
     */
    public void setSmtpHost(String hostName) {
        System.out.println("设置系统属性：mail.smtp.host = " + hostName);
        if (props == null)
            props = System.getProperties();
        props.put("mail.smtp.host", hostName);
    }

    /**
     * (这个Session类代表JavaMail 中的一个邮件session. 每一个基于
     * JavaMail的应用程序至少有一个session但是可以有任意多的session。 在这个例子中,
     * Session对象需要知道用来处理邮件的SMTP 服务器。
     */
    public boolean createMimeMessage() {
        try {
            System.out.println("准备获取邮件会话对象！");
            // 用props对象来创建并初始化session对象
            session = Session.getDefaultInstance(props, null);
        } catch (Exception e) {
            System.err.println("获取邮件会话对象时发生错误！" + e);
            return false;
        }
        System.out.println("准备创建MIME邮件对象！");
        try {
            // 用session对象来创建并初始化邮件对象
            mimeMsg = new MimeMessage(session);
            // 生成附件组件的实例
            mp = new MimeMultipart();
        } catch (Exception e) {
            System.err.println("创建MIME邮件对象失败！" + e);
            return false;
        }
        return true;
    }

    /**
     * 设置SMTP的身份认证
     */
    public void setNeedAuth(boolean need) {
        System.out.println("设置smtp身份认证：mail.smtp.auth = " + need);
        if (props == null) {
            props = System.getProperties();
        }
        if (need)
            props.put("mail.smtp.auth", "true");
        else
            props.put("mail.smtp.auth", "false");
    }

    /**
     * 进行用户身份验证时，设置用户名和密码
     */
    public void setNamePass(String name, String pass) {
        System.out.println("程序得到用户名与密码");
        username = name;
        password = pass;
    }

    /**
     * 设置邮件主题
     *
     * @param mailSubject
     * @return
     */
    public boolean setSubject(String mailSubject) {
        System.out.println("设置邮件主题！");
        try {
            mimeMsg.setSubject(mailSubject);
        } catch (Exception e) {
            System.err.println("设置邮件主题发生错误！");
            return false;
        }
        return true;
    }

    /**
     * 设置邮件内容,并设置其为文本格式或HTML文件格式，编码方式为UTF-8
     *
     * @param mailBody
     * @return
     */
    public boolean setBody(String mailBody) {
        try {
            System.out.println("设置邮件体格式");
            BodyPart bp = new MimeBodyPart();
            bp.setContent(
                    "<meta http-equiv=Content-Type content=text/html; charset=UTF-8>"
                            + mailBody, "text/html;charset=UTF-8");
            // 在组件上添加邮件文本
            mp.addBodyPart(bp);
        } catch (Exception e) {
            System.err.println("设置邮件正文时发生错误！" + e);
            return false;
        }
        return true;
    }

    /**
     * 增加发送附件
     *
     * @param filename
     *            邮件附件的地址，只能是本机地址而不能是网络地址，否则抛出异常
     * @return
     */
    public boolean addFileAffix(String filename) {
        System.out.println("增加邮件附件：" + filename);
        try {
            BodyPart bp = new MimeBodyPart();
            FileDataSource fileds = new FileDataSource(filename);
            bp.setDataHandler(new DataHandler(fileds));
            // 发送的附件前加上一个用户名的前缀
            bp.setFileName(fileds.getName());
            // 添加附件
            mp.addBodyPart(bp);
        } catch (Exception e) {
            System.err.println("增加邮件附件：" + filename + "发生错误！" + e);
            return false;
        }
        return true;
    }

    /**
     * 设置发件人地址
     *
     * @param from
     *            发件人地址
     * @return
     */
    public boolean setFrom(String from) {
        System.out.println("设置发信人！");
        try {
            mimeMsg.setFrom(new InternetAddress(from));
        } catch (Exception e) {
            return false;
        }
        return true;
    }

    /**
     * 设置收件人地址
     *
     * @param to
     *            收件人的地址
     * @return
     */
    public boolean setTo(String to) {
        System.out.println("设置收信人");
        if (to == null)
            return false;
        try {
            mimeMsg.setRecipients(javax.mail.Message.RecipientType.TO,
                    InternetAddress.parse(to));
        } catch (Exception e) {
            return false;
        }
        return true;
    }

    /**
     * 发送附件
     *
     * @param copyto
     * @return
     */
    public boolean setCopyTo(String copyto) {
        System.out.println("发送附件到");
        if (copyto == null)
            return false;
        try {
            mimeMsg.setRecipients(javax.mail.Message.RecipientType.CC,
                    InternetAddress.parse(copyto));
        } catch (Exception e) {
            return false;
        }
        return true;
    }

    /**
     * 发送邮件
     *
     * @return
     */
    public boolean sendout() {
        try {
            mimeMsg.setContent(mp);
            mimeMsg.saveChanges();
            System.out.println("正在发送邮件....");
            Session mailSession = Session.getInstance(props, null);
            Transport transport = mailSession.getTransport("smtp");
            // 真正的连接邮件服务器并进行身份验证
            transport.connect((String) props.get("mail.smtp.host"), username,
                    password);
            // 发送邮件
            transport.sendMessage(mimeMsg,
                    mimeMsg.getRecipients(javax.mail.Message.RecipientType.TO));
            System.out.println("发送邮件成功！");
            transport.close();
        } catch (Exception e) {
            System.err.println("邮件发送失败！" + e.getMessage());
            e.printStackTrace();
            return false;
        }
        return true;
    }

    public static void main(String[] args) {
        /**
         *
         ************* 切切注意********
         *
         * 注意 用此程序发邮件必须邮箱支持smtp服务 在2006年以后申请的163邮箱是不支持的 我知道sina邮箱 sohu邮箱 qq邮箱支持
         * 但是sina和qq邮箱需要手工设置开启此功能 所以在测试时最好使用这三个邮箱 sina邮箱的smtp设置方法如下 登录sina邮箱
         * 依次点击 邮箱设置--->帐户--->POP/SMTP设置 将开启复选框选中 然后保存
         *
         ************* 切切注意********
         */
        Email themail = new Email("smtp.sina.com");// 这里以新浪邮箱为例子
        String mailbody = "hello!!!"; // 邮件内容
        themail.setNeedAuth(true);
        themail.setSubject("JAVA发邮件的测试");// 邮件主题
        themail.setBody(mailbody);// 邮件正文
        themail.setTo("****@qq.com");// 收件人地址
        themail.setFrom("[email protected]");// 发件人地址
        themail.addFileAffix("d:\\temp\\aop.docx");// 附件文件路径,例如：C:/222.jpg,*注；"/"的写法；
                                                        // 如果没有可以不写
        themail.setNamePass("****@sina.com", "****");// 发件人地址和密码
                                                                // **改为相应邮箱密码
        themail.sendout();
    }
}