host=smtp.qq.com  //这是qq邮箱，如果是其他邮箱 服务要配置成相应的host
user=自己邮箱名
pwd=邮箱密码
subject=主题
1:167359230@qq.com  //发送人
2:17655858721@qq.com

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;
import java.util.Date;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.Map;
import java.util.Properties;
import java.util.Vector;

import javax.activation.DataHandler;
import javax.activation.FileDataSource;
import javax.mail.Authenticator;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Multipart;
import javax.mail.PasswordAuthentication;
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;
import javax.mail.internet.MimeUtility;

import org.apache.commons.lang.StringUtils;

import com.pzoom.dsa.common.util.Log;
import com.pzoom.dsa.nerd.model.Area;

public class SendMail {
	private static Log log = Log.getLogger(SendMail.class);
    public static String toChinese(String text) {
        try {
            text = MimeUtility.encodeText(new String(text.getBytes(), "GB2312"), "GB2312", "B");
        } catch (Exception e) {
            e.printStackTrace();
        }
        return text;
    }
    
    static StringBuffer buffer = new StringBuffer(); 
    static Map<String,String> map = new HashMap<String,String>();
    static{
		try {
			InputStream input=Area.class.getClassLoader().getResourceAsStream("email.properties");
			BufferedReader br=new BufferedReader(new InputStreamReader(input));
			String line=br.readLine();
			
			while(line!=null){
				if(line.indexOf(":")>=0){
					String[] val = line.split(":");
					buffer.append(val[1]+",");
				}else{
					String[] val=line.split("=");
					map.put(val[0], val[1]);
				}
				line=br.readLine();
			}
		} catch (IOException e) {
			log.error(e);
		}
    }
    /**
     * 邮件发送
     * @param mb
     * @return
     */
    public static boolean sendMail(MailBean mb) {
    	
        String from = map.get("user");//邮件发送人
        
        String subject = map.get("subject");//邮件主题
        String content = mb.getContent();
        String fileName = mb.getFilename();
        Vector<String> file = mb.getFile();
        String type = mb.getType();
        String nick = mb.getNick();
        
        Properties props = System.getProperties();
        props.put("mail.smtp.host", map.get("host"));                // 设置SMTP的主机
        props.put("mail.smtp.auth", "true");            // 需要经过验证
        if(map.get("host").contains("gmail")){
        	props.setProperty("mail.smtp.socketFactory.class", "javax.net.ssl.SSLSocketFactory"); 
        	props.setProperty("mail.smtp.socketFactory.fallback", "false"); 
        	props.setProperty("mail.smtp.port", "465"); 
        	props.setProperty("mail.smtp.socketFactory.port", "465"); 
        }

        
        Session session = Session.getInstance(props, new Authenticator() {
            public PasswordAuthentication getPasswordAuthentication() {
                return new PasswordAuthentication(map.get("user"),  map.get("pwd"));
            }
        });

        try {
            MimeMessage msg = new MimeMessage(session);
            if(StringUtils.isNotBlank(nick)){
            	nick = MimeUtility.encodeText(nick);
            	from = nick+"<"+from+">";
            }
            msg.setFrom(new InternetAddress(from));
            new InternetAddress();
			InternetAddress[] address = InternetAddress.parse(buffer.toString());
            msg.setRecipients(Message.RecipientType.TO, address);
//            msg.setSubject(toChinese(subject));
            msg.setSubject(subject);

            Multipart mp = new MimeMultipart();
            MimeBodyPart mbpContent = new MimeBodyPart();
            if("html".equals(type)){
            	mbpContent.setContent(content, "text/html;charset=gb2312");
            }else {
            	mbpContent.setText(content);
			}
            mp.addBodyPart(mbpContent);

            /*    往邮件中添加附件    */
            if(null!=file){
            	Enumeration<String> efile = file.elements();
            	while (efile.hasMoreElements()) {
            		MimeBodyPart mbpFile = new MimeBodyPart();
            		fileName = efile.nextElement().toString();
            		FileDataSource fds = new FileDataSource(fileName);
            		mbpFile.setDataHandler(new DataHandler(fds));
            		mbpFile.setFileName(toChinese(fds.getName()));
            		mp.addBodyPart(mbpFile);
            	}
            }

            msg.setContent(mp);
            msg.setSentDate(new Date());
            Transport.send(msg);
            
        } catch (MessagingException me) {
            me.printStackTrace();
            return false;
        } catch (UnsupportedEncodingException e) {
			e.printStackTrace();
			return false;
		}
        return true;
    }
    public static class MailBean{
    	 private String to;                                // 收件人
    	    private String from;                            // 发件人
    	    private String host;                            // SMTP主机
    	    private String username;                        // 发件人的用户名
    	    private String password;                        // 发件人的密码
    	    private String subject;                            // 邮件主题
    	    private String content;                            // 邮件正文
    	    Vector<String> file;                            // 多个附件
    	    private String filename;                        // 附件的文件名
    	    private String type;							//type text html类别
    	    private String nick;							//昵称
    	    
    	    public String getTo() {
    	        return to;
    	    }

    	    public void setTo(String to) {
    	        this.to = to;
    	    }

    	    public String getFrom() {
    	        return from;
    	    }

    	    public void setFrom(String from) {
    	        this.from = from;
    	    }

    	    public String getHost() {
    	        return host;
    	    }

    	    public void setHost(String host) {
    	        this.host = host;
    	    }

    	    public String getUsername() {
    	        return username;
    	    }

    	    public void setUsername(String username) {
    	        this.username = username;
    	    }

    	    public String getPassword() {
    	        return password;
    	    }

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

    	    public String getSubject() {
    	        return subject;
    	    }

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

    	    public String getContent() {
    	        return content;
    	    }

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

    	    public String getFilename() {
    	        return filename;
    	    }

    	    public void setFilename(String filename) {
    	        this.filename = filename;
    	    }

    	    public Vector<String> getFile(){
    	        return file;
    	    }
    	    
    	    public void attachFile(String fileName) {
    	        if(file == null)
    	            file = new Vector<String>();
    	        file.addElement(fileName);
    	    }

    		public String getType() {
    			return type;
    		}

    		public void setType(String type) {
    			this.type = type;
    		}

    		public String getNick() {
    			return nick;
    		}

    		public void setNick(String nick) {
    			this.nick = nick;
    		}
    }
}

java中使用自己的邮箱进行多人邮件发送