java邮件发送（单人，多人，抄送，Excel附件）

　　直接上代码保存吧

　　

package com.westvalley.ceiec.page.report.sendmail;

import weaver.email.EmailEncoder;
import javax.mail.*;
import javax.mail.internet.*;
import javax.mail.util.ByteArrayDataSource;
import javax.activation.*;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;

import crivia.db.i.DataSet;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.InputStream;
import java.util.*;

/**邮件发送工具类
 * @author whh
 */
public class Email {
    
    Log log = LogFactory.getLog(this.getClass());
    
    //发件人地址
    private String mail_from;
    public void setMail_from(String mailFrom) {
        mail_from = mailFrom;
    }
    public String getMail_from() {
        return mail_from;
    }
    
    //发件人密码
    private String password;
    public void setPassword(String password) {
        this.password = password;
    }
    public String getPassword() {
        return password;
    }
    
    //收件地址
    private String mail_to;
    public void setMail_to(String mailTo) {
        mail_to = mailTo;
    }
    public String getMail_to() {
        return mail_to;
    }
    
    //主题
    private String title;
    public void setTitle(String title) {
        this.title = title;
    }
    public String getTitle() {
        return title;
    }
    
    //内容
    private String message;
    public void setMessage(String message) {
        this.message = message;
    }
    public String getMessage() {
        return message;
    }
    
    //发件人邮件服务器 如：ceiec-electric.com 191.0.0.6
    private String send_server;
    public void setSend_server(String sendServer) {
        send_server = sendServer;
    }
    public String getSend_server() {
        return send_server;
    }
    
    /** 单个发送 setMail_to(String mailTo)
     * @return 是否正确发送
     * @throws AddressException
     */
    public boolean SendMail()throws AddressException{
        try{
            int n = this.mail_from.indexOf('@');
            int m = this.mail_from.length();
            //取邮件的服务器
            String server = this.mail_from.substring(n+1, m);
            //建立邮件会话
            Properties pro = new Properties();
            pro.put("mail.smtp.host", "smtp."+server);
            pro.put("mail.smtp.auth", "true");
            Session sess = Session.getInstance(pro);
            sess.setDebug(true);
            //新建一个消息对象
            MimeMessage message = new MimeMessage(sess);
            //设置发件人
            InternetAddress from_address = new InternetAddress(this.mail_from);
            message.setFrom(from_address);
            //设置收件人
            InternetAddress to_address = new InternetAddress(this.mail_to);
            message.setRecipient(Message.RecipientType.TO, to_address);
            //设置主题
            message.setSubject(title);
            //设置内容
            message.setContent(this.message, "text/html;charset=UTF-8");
            //设置发送时间
            message.setSentDate(new Date());
            //发送邮件
            message.saveChanges(); //保存邮件信息
            //设置发送的格式            
            Transport transport = sess.getTransport("smtp");
            if(this.send_server == null){
                transport.connect("191.0.0.6", this.mail_from, password);
            }
            else{
                transport.connect(this.send_server, this.mail_from, password);
            }
            transport.sendMessage(message, message.getAllRecipients());
            transport.close();
            log.info("向"+this.mail_to+"发送邮件成功");
            return true;
        }catch(Exception e){
            log.info("发送邮件失败，原因可能是"+e.toString());
            return false;
        }
        
    }
    
    /**群发 
     * @param addresses 地址list
     * @return 
     * @throws AddressException
     */
    public boolean SendMail(List<String> addresses) throws AddressException{
        try{
            int n = this.mail_from.indexOf('@');
            int m = this.mail_from.length();
            //取邮件的服务器
            String server = this.mail_from.substring(n+1, m);
            //建立邮件会话
            Properties pro = new Properties();
            pro.put("mail.smtp.host", "smtp."+server);
            pro.put("mail.smtp.auth", "true");
            Session sess = Session.getInstance(pro);
            sess.setDebug(true);
            //新建一个消息对象
            MimeMessage message = new MimeMessage(sess);
            //设置发件人
            InternetAddress from_address = new InternetAddress(this.mail_from);
            message.setFrom(from_address);
            //设置收件人，多个
            final int num = addresses.size();
            InternetAddress to_address[] = new InternetAddress[num];
            for(int i=0; i<num; i++){
                to_address[i] = new InternetAddress(addresses.get(i));
            }
            message.setRecipients(Message.RecipientType.TO, to_address);
            //设置主题
            message.setSubject(title);
            //设置内容
            message.setContent(this.message, "text/html;charset=UTF-8");
            //设置发送时间
            message.setSentDate(new Date());
            //发送邮件
            message.saveChanges(); //保存邮件信息
            //设置发送的格式            
            Transport transport = sess.getTransport("smtp");
            if(this.send_server == null){
                transport.connect("191.0.0.6", this.mail_from, password);
            }
            else{
                transport.connect(this.send_server, this.mail_from, password);
            }
            transport.sendMessage(message, message.getAllRecipients());
            transport.close();
            log.info("发送邮件成功");
            return true;
        }catch(Exception e){
            log.info("发送邮件失败，原因可能是"+e.getMessage());
            return false;
        }
        
    }
    
    /** 多人发送并抄送 增加：2017-04-25 whh
     * @param addresses 收件邮箱（多个）
     * @param ccAddresses 抄送邮箱（多个）
     * @return
     * @throws AddressException
     */
    public boolean SendMail(List<String> addresses, List<String> ccAddresses) throws 
        AddressException{
        if(0==ccAddresses.size()){ //20170428 whh
            return SendMail(addresses);
        }
        try{
            int n = this.mail_from.indexOf('@');
            int m = this.mail_from.length();
            //取邮件的服务器
            String server = this.mail_from.substring(n+1, m);
            //建立邮件会话
            Properties pro = new Properties();
            pro.put("mail.smtp.host", "smtp."+server);
            pro.put("mail.smtp.auth", "true");
            Session sess = Session.getInstance(pro);
            sess.setDebug(true);
            //新建一个消息对象
            MimeMessage message = new MimeMessage(sess);
            //设置发件人
            InternetAddress from_address = new InternetAddress(this.mail_from);
            message.setFrom(from_address);
            //设置收件人，多个
            final int num = addresses.size();
            InternetAddress to_address[] = new InternetAddress[num];
            for(int i=0; i<num; i++){
                to_address[i] = new InternetAddress(addresses.get(i));
            }
            message.setRecipients(Message.RecipientType.TO, to_address);
            //设置抄送人
            final int ccSize = ccAddresses.size();
            if(ccSize > 0){
                InternetAddress cc_Address[] = new InternetAddress[ccSize];
                for(int i=0; i<ccSize; i++){
                    cc_Address[i] = new InternetAddress(ccAddresses.get(i));
                }
                message.setRecipients(Message.RecipientType.CC, cc_Address);
            }    
            
            //设置主题
            message.setSubject(title);
            //设置内容
            message.setContent(this.message, "text/html;charset=UTF-8");
            //设置发送时间
            message.setSentDate(new Date());
            //发送邮件
            message.saveChanges(); //保存邮件信息
            //设置发送的格式            
            Transport transport = sess.getTransport("smtp");
            if(this.send_server == null){
                transport.connect("191.0.0.6", this.mail_from, password);
            }
            else{
                transport.connect(this.send_server, this.mail_from, password);
            }
            transport.sendMessage(message, message.getAllRecipients());
            transport.close();
            log.info("发送邮件成功");
            return true;
        }catch(Exception e){
            log.info("发送邮件失败，原因可能是"+e.getMessage());
            return false;
        }
        
    }
    
    /** 多人发送并抄送 增加：2019-06-14 whh
     * @param addresses 收件邮箱（多个）
     * @param ccAddresses 抄送邮箱（多个）
     * @param is 附件
     * @return
     * @throws AddressException
     */
    public boolean SendMail(List<String> addresses, List<String> ccAddresses,
            HSSFWorkbook workBook,String workBookName) throws 
        AddressException{
        try{
            int n = this.mail_from.indexOf('@');
            int m = this.mail_from.length();
            //取邮件的服务器
            String server = this.mail_from.substring(n+1, m);
            //建立邮件会话
            Properties pro = new Properties();
            pro.put("mail.smtp.host", "smtp."+server);
            pro.put("mail.smtp.auth", "true");
            Session sess = Session.getInstance(pro);
            sess.setDebug(true);
            //新建一个消息对象
            MimeMessage message = new MimeMessage(sess);
            //设置发件人
            InternetAddress from_address = new InternetAddress(this.mail_from);
            message.setFrom(from_address);
            //设置收件人，多个
            final int num = addresses.size();
            InternetAddress to_address[] = new InternetAddress[num];
            for(int i=0; i<num; i++){
                to_address[i] = new InternetAddress(addresses.get(i));
            }
            message.setRecipients(Message.RecipientType.TO, to_address);
            //设置抄送人
            final int ccSize = ccAddresses.size();
            if(ccSize > 0){
                InternetAddress cc_Address[] = new InternetAddress[ccSize];
                for(int i=0; i<ccSize; i++){
                    cc_Address[i] = new InternetAddress(ccAddresses.get(i));
                }
                message.setRecipients(Message.RecipientType.CC, cc_Address);
            }    
            
            //附件
            ByteArrayOutputStream baos = new ByteArrayOutputStream();
            workBook.write(baos);
            baos.flush();
            byte[] bt = baos.toByteArray();
            InputStream is = new ByteArrayInputStream(bt, 0, bt.length);
            baos.close();
            
            /*添加正文内容*/  
            Multipart multipart = new MimeMultipart();  
            BodyPart contentPart = new MimeBodyPart();  
//            contentPart.setText(this.message);  
//            contentPart.setHeader("Content-Type", "text/html;charset=UTF-8"); 
            contentPart.setContent(this.message, "text/html;charset=UTF-8");
            multipart.addBodyPart(contentPart);  
              
            /*添加附件*/  
            MimeBodyPart fileBody = new MimeBodyPart();  
            DataSource source = new ByteArrayDataSource(is, "application/msexcel"); 
            fileBody.setDataHandler(new DataHandler(source));  
            // 中文乱码问题
            fileBody.setFileName(MimeUtility.encodeText(workBookName+".xls"));  
            multipart.addBodyPart(fileBody);
            
            //设置主题
            message.setSubject(title);
            //设置内容
            message.setContent(multipart);
            //设置发送时间
            message.setSentDate(new Date());
            //发送邮件
            message.saveChanges(); //保存邮件信息
            //设置发送的格式            
            Transport transport = sess.getTransport("smtp");
            if(this.send_server == null){
                transport.connect("191.0.0.6", this.mail_from, password);
            }
            else{
                transport.connect(this.send_server, this.mail_from, password);
            }
            transport.sendMessage(message, message.getAllRecipients());
            transport.close();
            log.info("发送邮件成功");
            return true;
        }catch(Exception e){
            log.info("发送邮件失败，原因可能是"+e.getMessage());
            return false;
        }
        
    }
    
    /**邮箱初始化，发件人邮箱、密码及服务器信息的获取
     * @return 正确获取时返回Email对象，否则为null
     */
    public static Email intiEmail(){
//        Log log = LogFactory.getLog(this.getClass());
        Email email = new Email();
        //获取系统的邮箱信息
        DataSet data = SQL.select(SQL.sql_Array(" select defmailpassword" +
                ",defmailserver,defmailfrom from SystemSet "));
        if(data.next()){
            //发件人邮箱地址
            email.setMail_from(data.get("defmailfrom")); 
            //获取并解析邮箱密码
            email.setPassword(EmailEncoder.DecoderPassword(data.get("defmailpassword")));
//            log.info("Password:"+EmailEncoder.DecoderPassword(data.get("defmailpassword")));
            //服务器信息
            email.setSend_server(data.get("defmailserver"));
        }
        if(email.getMail_from().equals("")||
                email.getPassword().equals("")||
                email.getSend_server().equals("")){
//            log.info("发送人邮箱错误");
//            log.info("From："+email.getMail_from()+"Password:"+
//                    email.getPassword()+"Server:"+email.getSend_server());    
            return null;
        }
        return email;
    }
}