运用JavaMail发邮件

使用JavaMail发邮件
今天学习了一下JavaMail，javamail发送邮件确实是一个比较麻烦的问题不用第三方邮件程序。为了以后使用方便，自己写了段代码

Javamail-Android配置步骤：

• 下载Android版本JavaMail包，additional.jar、mail.jar和activation.jar，下载地址JavaMail-Android
• 在项目与src同一目录级别下，新建文件夹lib，将下载的3个jar包放入该文件夹
• 右键->Properties->Java Build Path->Libraries，选择Add External JARs，找到项目下lib目录的3个jar包

我的代码有三个类： 
第一个类：MailSenderInfo.java

package com.iaiai.imail.activity.helper;

import java.util.Properties;

/**
 * Created with IntelliJ IDEA.
 * User: 丸子
 * Date: 12-5-25
 * Time: 16:56:13
 * Http: http://iaiai.iteye.com
 * QQ: 176291935
 */
public class MailSenderInfo {

    // 发送邮件的服务器的IP和端口
    private String mailServerHost;
    private String mailServerPort = "25";
    // 邮件发送者的地址
    private String fromAddress;
    // 邮件接收者的地址
    private String toAddress;
    // 登陆邮件发送服务器的用户名和密码
    private String userName;
    private String password;
    // 是否需要身份验证
    private boolean validate = false;
    // 邮件主题
    private String subject;
    // 邮件的文本内容
    private String content;
    // 邮件附件的文件名
    private String[] attachFileNames;

    /**
     * 获得邮件会话属性
     */
    public Properties getProperties() {
        Properties p = new Properties();
        p.put("mail.smtp.host", this.mailServerHost);
        p.put("mail.smtp.port", this.mailServerPort);
        p.put("mail.smtp.auth", validate ? "true" : "false");
        return p;
    }

    public String getMailServerHost() {
        return mailServerHost;
    }

    public void setMailServerHost(String mailServerHost) {
        this.mailServerHost = mailServerHost;
    }

    public String getMailServerPort() {
        return mailServerPort;
    }

    public void setMailServerPort(String mailServerPort) {
        this.mailServerPort = mailServerPort;
    }

    public boolean isValidate() {
        return validate;
    }

    public void setValidate(boolean validate) {
        this.validate = validate;
    }

    public String[] getAttachFileNames() {
        return attachFileNames;
    }

    public void setAttachFileNames(String[] fileNames) {
        this.attachFileNames = fileNames;
    }

    public String getFromAddress() {
        return fromAddress;
    }

    public void setFromAddress(String fromAddress) {
        this.fromAddress = fromAddress;
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }

    public String getToAddress() {
        return toAddress;
    }

    public void setToAddress(String toAddress) {
        this.toAddress = toAddress;
    }

    public String getUserName() {
        return userName;
    }

    public void setUserName(String userName) {
        this.userName = userName;
    }

    public String getSubject() {
        return subject;
    }

    public void setSubject(String subject) {
        this.subject = subject;
    }

    public String getContent() {
        return content;
    }

    public void setContent(String textContent) {
        this.content = textContent;
    }

}

第二个类：MultiMailsender.java

package com.iaiai.imail.activity.helper;

import javax.mail.*;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeBodyPart;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeMultipart;
import java.util.Date;
import java.util.Properties;

/**
 * Created with IntelliJ IDEA.
 * User: 丸子
 * Date: 12-5-25
 * Time: 16:56:13
 * Http: http://iaiai.iteye.com
 * QQ: 176291935
 */
public class MultiMailsender {

    /**
     * 以文本格式发送邮件
     *
     * @param mailInfo 待发送的邮件的信息
     */
    public boolean sendTextMail(MultiMailSenderInfo mailInfo) {
        // 判断是否需要身份认证
        MyAuthenticator authenticator = null;
        Properties pro = mailInfo.getProperties();
        if (mailInfo.isValidate()) {
            // 如果需要身份认证，则创建一个密码验证器
            authenticator = new MyAuthenticator(mailInfo.getUserName(), mailInfo.getPassword());
        }
        // 根据邮件会话属性和密码验证器构造一个发送邮件的session
        Session sendMailSession = Session.getDefaultInstance(pro, authenticator);
        try {
            // 根据session创建一个邮件消息
            Message mailMessage = new MimeMessage(sendMailSession);
            // 创建邮件发送者地址
            Address from = new InternetAddress(mailInfo.getFromAddress());
            // 设置邮件消息的发送者
            mailMessage.setFrom(from);
            // 创建邮件的接收者地址，并设置到邮件消息中
            Address[] tos = null;
            String[] receivers = mailInfo.getReceivers();
            if (receivers != null) {
                // 为每个邮件接收者创建一个地址
                tos = new InternetAddress[receivers.length + 1];
                tos[0] = new InternetAddress(mailInfo.getToAddress());
                for (int i = 0; i < receivers.length; i++) {
                    tos[i + 1] = new InternetAddress(receivers[i]);
                }
            } else {
                tos = new InternetAddress[1];
                tos[0] = new InternetAddress(mailInfo.getToAddress());
            }

            // Message.RecipientType.TO属性表示接收者的类型为TO
            mailMessage.setRecipients(Message.RecipientType.TO, tos);
            // 设置邮件消息的主题
            mailMessage.setSubject(mailInfo.getSubject());
            // 设置邮件消息发送的时间
            mailMessage.setSentDate(new Date());
            // 设置邮件消息的主要内容
            String mailContent = mailInfo.getContent();
            mailMessage.setText(mailContent);
            // 发送邮件
            Transport.send(mailMessage);
            return true;
        } catch (MessagingException ex) {
            ex.printStackTrace();
        }
        return false;
    }

    /**
     * 发送邮件给多个接收者,以Html内容
     *
     * @param mailInfo 带发送邮件的信息
     * @return
     */
    public static boolean sendMailtoMultiReceiver(MultiMailSenderInfo mailInfo) {
        MyAuthenticator authenticator = null;
        if (mailInfo.isValidate()) {
            authenticator = new MyAuthenticator(mailInfo.getUserName(),
                    mailInfo.getPassword());
        }
        Session sendMailSession = Session.getInstance(mailInfo
                .getProperties(), authenticator);
        try {
            Message mailMessage = new MimeMessage(sendMailSession);
            // 创建邮件发送者地址
            Address from = new InternetAddress(mailInfo.getFromAddress());
            mailMessage.setFrom(from);
            // 创建邮件的接收者地址，并设置到邮件消息中
            Address[] tos = null;
            String[] receivers = mailInfo.getReceivers();
            if (receivers != null) {
                // 为每个邮件接收者创建一个地址
                tos = new InternetAddress[receivers.length + 1];
                tos[0] = new InternetAddress(mailInfo.getToAddress());
                for (int i = 0; i < receivers.length; i++) {
                    tos[i + 1] = new InternetAddress(receivers[i]);
                }
            } else {
                tos = new InternetAddress[1];
                tos[0] = new InternetAddress(mailInfo.getToAddress());
            }
            // 将所有接收者地址都添加到邮件接收者属性中
            mailMessage.setRecipients(Message.RecipientType.TO, tos);

            mailMessage.setSubject(mailInfo.getSubject());
            mailMessage.setSentDate(new Date());
            // 设置邮件内容
            Multipart mainPart = new MimeMultipart();
            BodyPart html = new MimeBodyPart();
            html.setContent(mailInfo.getContent(), "text/html; charset=GBK");
            mainPart.addBodyPart(html);
            mailMessage.setContent(mainPart);
            // 发送邮件
            Transport.send(mailMessage);
            return true;
        } catch (MessagingException ex) {
            ex.printStackTrace();
        }
        return false;
    }

    /**
     * 发送带抄送的邮件
     *
     * @param mailInfo 待发送邮件的消息
     * @return
     */
    public static boolean sendMailtoMultiCC(MultiMailSenderInfo mailInfo) {
        MyAuthenticator authenticator = null;
        if (mailInfo.isValidate()) {
            authenticator = new MyAuthenticator(mailInfo.getUserName(),
                    mailInfo.getPassword());
        }
        Session sendMailSession = Session.getInstance(mailInfo
                .getProperties(), authenticator);
        try {
            Message mailMessage = new MimeMessage(sendMailSession);
            // 创建邮件发送者地址
            Address from = new InternetAddress(mailInfo.getFromAddress());
            mailMessage.setFrom(from);
            // 创建邮件的接收者地址，并设置到邮件消息中
            Address to = new InternetAddress(mailInfo.getToAddress());
            mailMessage.setRecipient(Message.RecipientType.TO, to);

            // 获取抄送者信息
            String[] ccs = mailInfo.getCcs();
            if (ccs != null) {
                // 为每个邮件接收者创建一个地址
                Address[] ccAdresses = new InternetAddress[ccs.length];
                for (int i = 0; i < ccs.length; i++) {
                    ccAdresses[i] = new InternetAddress(ccs[i]);
                }
                // 将抄送者信息设置到邮件信息中，注意类型为Message.RecipientType.CC
                mailMessage.setRecipients(Message.RecipientType.CC, ccAdresses);
            }

            mailMessage.setSubject(mailInfo.getSubject());
            mailMessage.setSentDate(new Date());
            // 设置邮件内容
            Multipart mainPart = new MimeMultipart();
            BodyPart html = new MimeBodyPart();
            html.setContent(mailInfo.getContent(), "text/html; charset=GBK");
            mainPart.addBodyPart(html);
            mailMessage.setContent(mainPart);
            // 发送邮件
            Transport.send(mailMessage);
            return true;
        } catch (MessagingException ex) {
            ex.printStackTrace();
        }
        return false;
    }

    /**
     * 发送多接收者类型邮件的基本信息
     */
    public static class MultiMailSenderInfo extends MailSenderInfo {
        // 邮件的接收者，可以有多个
        private String[] receivers;
        // 邮件的抄送者，可以有多个
        private String[] ccs;

        public String[] getCcs() {
            return ccs;
        }

        public void setCcs(String[] ccs) {
            this.ccs = ccs;
        }

        public String[] getReceivers() {
            return receivers;
        }

        public void setReceivers(String[] receivers) {
            this.receivers = receivers;
        }
    }

}

第三个类：MyAuthenticator.java

package com.iaiai.imail.activity.helper;

import javax.mail.Authenticator;
import javax.mail.PasswordAuthentication;

/**
 * Created with IntelliJ IDEA.
 * User: 丸子
 * Date: 12-5-25
 * Time: 16:56:13
 * Http: http://iaiai.iteye.com
 * QQ: 176291935
 */
public class MyAuthenticator extends Authenticator {

    String userName = null;
    String password = null;

    public MyAuthenticator() {
    }

    public MyAuthenticator(String username, String password) {
        this.userName = username;
        this.password = password;
    }

    protected PasswordAuthentication getPasswordAuthentication() {
        return new PasswordAuthentication(userName, password);
    }

}

最后，给出朋友们几个注意的地方：

• 使用此代码你可以完成你的javamail的邮件发送功能、发多个邮箱。三个类缺一不可。
• 这三个类我打包是用的com.iaiai包，如果不喜欢，你可以自己改，但三个类文件必须在同一个包中
• 不要使用你刚刚注册过的邮箱在程序中发邮件，如果你的163邮箱是刚注册不久，那你就不要使用“smtp.163.com”。因为你发不出去。刚注册的邮箱是不会给你这种权限的，也就是你不能通过验证。要使用你经常用的邮箱，而且时间比较长的。
• 另一个问题就是mailInfo.setMailServerHost("smtp.163.com");与mailInfo.setFromAddress("xxx@163.com");这两句话。即如果你使用163smtp服务器，那么发送邮件地址就必须用163的邮箱，如果不的话，是不会发送成功的。
• 关于javamail验证错误的问题，网上的解释有很多，但我看见的只有一个。就是我的第三个类。你只要复制全了代码，我想是不会有问题的。
• 然后在Android项目中添加网络访问权限<uses-permission android:name="android.permission.INTERNET"></uses-permission>