JavaMail发送邮件

注册找回密码之类的业务，经常需要发送邮件给用户，java如何实现发送邮件？

首先引入mail.jar，然后创建相关的工具类。

发送邮件的工具类：SimpleMailSender

/** * 简单邮件（不带附件的邮件）发送器 * Created by xiaochun on 2016/3/10. */import java.io.UnsupportedEncodingException;import java.util.Date;import java.util.Properties;import javax.mail.Address;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;public class SimpleMailSender  {    /**     * 以文本格式发送邮件     * @param mailInfo 待发送的邮件的信息     */    public boolean sendTextMail(MailSenderInfo 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            String nickname=javax.mail.internet.MimeUtility.encodeText(mailInfo.getNickname());            mailMessage.setFrom(new InternetAddress(nickname+"<"+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);            // 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();        } catch (UnsupportedEncodingException e) {            e.printStackTrace();        }        return false;    }    /**     * 以HTML格式发送邮件     * @param mailInfo 待发送的邮件信息     */    public static boolean sendHtmlMail(MailSenderInfo mailInfo){        // 判断是否需要身份认证        MyAuthenticator authenticator = null;        Properties pro = mailInfo.getProperties();        //如果需要身份认证，则创建一个密码验证器        if (mailInfo.isValidate()) {            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);//            MimeMessage 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            String nickname=javax.mail.internet.MimeUtility.encodeText(mailInfo.getNickname());            mailMessage.setFrom(new InternetAddress(nickname+"<"+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());            // Message.RecipientType.TO属性表示接收者的类型为TO            mailMessage.setRecipient(Message.RecipientType.TO,to);            // 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());            // MiniMultipart类是一个容器类，包含MimeBodyPart类型的对象            Multipart mainPart = new MimeMultipart();            // 创建一个包含HTML内容的MimeBodyPart            BodyPart html = new MimeBodyPart();            // 设置HTML内容            html.setContent(mailInfo.getContent(), "text/html; charset=utf-8");            mainPart.addBodyPart(html);            // 将MiniMultipart对象设置为邮件内容            mailMessage.setContent(mainPart);            // 发送邮件            Transport.send(mailMessage);            return true;        } catch (MessagingException ex) {            ex.printStackTrace();        } catch (UnsupportedEncodingException e) {            e.printStackTrace();        }        return false;    }}

邮件发送实体：MailSenderInfo

import java.util.Properties;/** * 发邮件所需基本信息 * Created by xiaochun on 2016/3/10. */public class MailSenderInfo {    private String mailServerHost;  // 发送邮件的服务器的IP和端口    private String mailServerPort = "25";    private String fromAddress; // 邮件发送者的地址    private String toAddress;   // 邮件接收者的地址    private String userName; // 登陆邮件发送服务器的用户名和密码    private String password;    private boolean validate = false; // 是否需要身份验证    private String subject; // 邮件主题    private String content; // 邮件的文本内容    private String[] attachFileNames;   // 邮件附件的文件名    private String nickname;    //发件人名称    /**     * 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;    }    public String getNickname() {        return nickname;    }    public void setNickname(String nickname) {        this.nickname = nickname;    }}

邮箱验证实体：MyAuthenticator

/** * Created by xiaochun on 2016/3/10. */import javax.mail.*;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);    }}

调用举例，系统调用类：MailUtil

import com.mdy.entity.base.common.CodeEnum;import com.mdy.utils.ResourceUtil;import java.io.UnsupportedEncodingException;/** * 邮件发送工具类 * @author lxc * */public class MailUitl {/** * 发送邮件的方法 * @param to:收件人 * @param code:激活码 */public static Integer sendMail(String to,String id,String type){//配置邮件try {MailSenderInfo mailInfo = new MailSenderInfo();mailInfo.setMailServerHost(ResourceUtil.getConfigByName("mail_serverhost"));//邮件服务器mailInfo.setMailServerPort(ResourceUtil.getConfigByName("mail_serverport"));//邮件端口mailInfo.setValidate(true);mailInfo.setUserName(ResourceUtil.getConfigByName("mail_fromaddress"));//邮箱mailInfo.setPassword(ResourceUtil.getConfigByName("mail_fromaddress_password"));//您的邮箱密码mailInfo.setFromAddress(ResourceUtil.getConfigByName("mail_fromaddress"));mailInfo.setToAddress(to);mailInfo.setSubject(new String(ResourceUtil.getConfigByName("mail_subject").getBytes("ISO-8859-1"),"UTF-8"));//主题String content;//邮件正文if (type == "1") {//注册//todo:content =new String(ResourceUtil.getConfigByName("mail_content_reg").getBytes("ISO-8859-1"),"UTF-8");//邮件正文}else{//找回密码content =new String(ResourceUtil.getConfigByName("mail_content_retrieve").getBytes("ISO-8859-1"),"UTF-8");//邮件正文}content=content.replace("#ID#",id);mailInfo.setContent(content);mailInfo.setNickname(new String(ResourceUtil.getConfigByName("mail_fromaddress_nickname").getBytes("ISO-8859-1"),"UTF-8"));//发件人名称//这个类主要来发送邮件SimpleMailSender sms = new SimpleMailSender();boolean result=sms.sendHtmlMail(mailInfo);//发送html格式if (result == true) {return CodeEnum.success.getValue();}else{return CodeEnum.error.getValue();}} catch (UnsupportedEncodingException e) {e.printStackTrace();return CodeEnum.error.getValue();}}public static void main(String[] args){//这个类主要是设置邮件MailSenderInfo mailInfo = new MailSenderInfo();mailInfo.setMailServerHost("smtp.163.com");mailInfo.setMailServerPort("25");mailInfo.setValidate(true);mailInfo.setUserName("*******@163.com");mailInfo.setPassword("*******");//您的邮箱密码mailInfo.setFromAddress("********@163.com");mailInfo.setToAddress("*******@qq.com");mailInfo.setSubject("主题");mailInfo.setContent("<h1>设置邮箱内容</h1><a>zheshi ygie lianjie</a>");mailInfo.setNickname("发件人名称");//这个类主要来发送邮件SimpleMailSender sms = new SimpleMailSender();sms.sendTextMail(mailInfo);//发送文体格式sms.sendHtmlMail(mailInfo);//发送html格式}}