JAVA MAIL 群发邮件

package com.hp.poc.common;

import java.io.UnsupportedEncodingException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Properties;

import javax.mail.Address;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.AddressException;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeUtility;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class EmailsSend  {
    //BCC一次100个用户
    final int BCC_SIZE = 100;
    //每隔10秒发送一次
    final int PEROID = 100000;
    final Logger Log = LoggerFactory.getLogger(EmailsSend.class);
    ArrayList<String> partsList=new ArrayList<String>();
    String subject="",body="";
    
	public EmailsSend() {
		super();
	}
	
	public EmailsSend(ArrayList<String> partsList, String subject, String body) {
		super();
		this.partsList = partsList;
		this.subject = subject;
		this.body = body;
	}
	
	public  ArrayList<String> setps(String subject,String body,ArrayList<String> to) throws Exception{
		ArrayList<String> smallArray=null;
		ArrayList<String> errArray=new ArrayList<String>();
		double c=(double)to.size()/(double)BCC_SIZE;
		int k=((Double)Math.ceil(c)).intValue();
		int i=0;
		for(int j=1;j<=k;j++){
			smallArray=new ArrayList<String>();
			for(;i<j*BCC_SIZE&&i<to.size();i++){
				smallArray.add(to.get(i));
			}
			boolean emailState=this.setp(subject, body, smallArray);
			if(emailState){
				Thread.sleep(PEROID);
			}else{
				Thread.sleep(3*PEROID);
				emailState=this.setp(subject, body, smallArray);
				if(!emailState){
					errArray.addAll(smallArray);
				}
			}
		}
		return errArray;
	}
	private  boolean setp(String subject,String body,ArrayList<String> to) throws Exception{
		HashMap<String, String> map=sendEmailByCustomerMailServer(subject,body,to,null);
		if(map.get("state").toString().equals("success")){
			return true;
		}
		return false;
	}
	private  HashMap<String, String> sendEmailByCustomerMailServer(String subject,
			String body, ArrayList<String> to, ArrayList<String> cc) {
		HashMap<String, String> map = new HashMap<String, String>();
		String message = "邮件发送成功！";
		map.put("state", "success");
		map.put("message", message);
		try {
			Properties props = new Properties();
			props.put("mail.smtp.host",
					ChannelConfig.getValue("mail.smtp.host"));
			String port = ChannelConfig.getValue("mail.smtp.port");
			String auth = ChannelConfig.getValue("mail.smtp.auth");
			String from=ChannelConfig.getValue("mail.smtp.username");
			if (auth != null && !"".equals(auth.trim()) && "true".equals(auth)) {
				props.put("mail.smtp.auth", auth);
				if (port != null && !"".equals(port.trim())) {
					props.put("mail.smtp.port", port);
				}
			} else {
				props.put("mail.smtp.auth", "false");
				props.put("mail.smtp.timeout", "0");
			}

			// Getting the Mail Session Object
			Session mailConnection = Session.getDefaultInstance(props);
			Transport transport = mailConnection.getTransport("smtp");
			if (auth != null && !"".equals(auth.trim()) && "true".equals(auth)) {
				transport.connect(ChannelConfig.getValue("mail.smtp.host"),
						ChannelConfig.getValue("mail.smtp.username"),
						ChannelConfig.getValue("mail.smtp.password"));
			} else {
				transport.connect();
			}

			Message msg = new MimeMessage(mailConnection);
			msg = buildMessage(msg, subject, body, from, to, cc);
			transport.sendMessage(msg, msg.getAllRecipients());
			org.jfree.util.Log.info(message+" "+to.toString());
			return map;
		} catch (Exception e) {
			message="邮件发送失败！错误原因：\n"+e.getMessage();  
            map.put("state", "failed");  
            map.put("message", message);  
            e.printStackTrace();
            org.jfree.util.Log.error(message+" "+to.toString());
		}
		return map;
	}

	private  Message buildMessage(Message msg, String subject,
			String body, String from, ArrayList<String> to, ArrayList<String> cc) throws UnsupportedEncodingException, MessagingException{
		Address[] toAdd = buildEmaiAddress(to);
		Address fromAdd = new InternetAddress(from);
		msg.setFrom(fromAdd);
		msg.setRecipients(Message.RecipientType.BCC, toAdd);
		if (cc != null && cc.size() > 0) {
			Address[] ccAdd = buildEmaiAddress(cc);
			msg.setRecipients(Message.RecipientType.CC, ccAdd);
		}

		msg.setSubject(MimeUtility.encodeText(subject,
				MimeUtility.mimeCharset("UTF-8"), null));
		msg.setContent(body, "text/html;charset=utf-8");
		return msg;
	}
    private  Address[] buildEmaiAddress(ArrayList<String> addressArray) throws AddressException{
        if(addressArray == null || addressArray.size() == 0) {
            return null;
        }
        Address[] addressList = new Address[addressArray.size()];
        for (int i = 0; i < addressArray.size(); i++){
            addressList[i]  = new InternetAddress(addressArray.get(i));
        }
        return addressList;
    }
	
}

@GET
	@Path("setp")
	@Produces(MediaType.TEXT_PLAIN)
    public String sendEmailsToAllPartner() throws Exception{
		String sql="SELECT DISTINCT authorities.`UserName` FROM authorities,users WHERE " +
				"authorities.`UserName`=users.`UserName` AND authorities.`authority`='ROLE_PARTNER' " +
				"AND users.`CompanyID` IS NOT NULL AND LENGTH(authorities.`UserName`)>3 ORDER BY authorities.`UserName`;";
		ArrayList<String> partsList=(ArrayList<String>) dao.findByNativeSql(sql.toString());
		
		File currPathFile=new File(Thread.currentThread().getContextClassLoader().getResource("").toURI().getPath());
		File attFile=new File(currPathFile.getParentFile().getParentFile().getPath() + File.separator + "template"+File.separator+"html_tw.html");
		String body=EmailHelper.loadPage(attFile);
		String subject="管理平台 即日起正式啟用";
		partsList=new ArrayList<String>();
//		for(int i=0;i<1133;i++){
//			partsList.add("[email protected]");
//		}
		EmailsSend es=new EmailsSend();
		String errAddr=es.setps(subject, body, partsList).toString();
		Log.info(errAddr);
		return errAddr;
	}