java发送 email

public class EmailUtils implements IAction
{
    private static Logger logger = Logger.getLogger(EmailUtils.class.getName());

    private static EmailUtils instance;
    //邮件服务器
    private static String EMAIL_HOST = "mail.host";
    //邮件简单协议
    private static String MAIL_TRANSPORT_PROTOCOL = "mail.transport.protocol";
    //是否开启验证，必须能为true
    private static boolean MAIL_SMTP_AUTH_VALUE = true;
    //是否开启验证
    private static String MAIL_SMTP_AUTH = "mail.smtp.auth";

    private static String EAIL_FORMATTER = "text/html;charset=utf-8";

    private static String MAIL_SMTP_PORT = "mail.smtp.port";

    Map<String,String> map = null;
    List<String> receiverList;

    public static EmailUtils getInstance() throws BaseAppException {
        if(null == instance){
            instance = new EmailUtils();
        }
        return instance;
    }

    public EmailUtils() throws BaseAppException
    {
        logger.info("get email info   begain.....");
        //初始化邮件系统参数系统
        Base base = new Base(new DynamicDict().getConnection());
        String sql = "SELECT PARA_SUB_CODE,PARA_VALUE FROM TWF_SYSTEMPARAMETER WHERE  PARA_CATEGORY =15 ORDER BY SEQ ASC";
        DynamicDict dict = base.query("get email info", "EMAIL", sql,new String[]{});
        map = new HashMap<String,String>();

//        properties = new Properties();
        if(dict.getCount("EMAIL")>0){
            for (int i = 0; i < dict.getCount("EMAIL"); i++)
            {
                Map<String,String> map_value = new HashMap<String,String>();
                map_value = (Map<String, String>)dict.getValueByName("EMAIL",i);
                map.put(map_value.get("PARA_CODE"), map_value.get("PARA_VALUE"));
            }
        }

        //获取邮件的接受者
        String rSql = "SELECT PARA_SUB_CODE,PARA_VALUE FROM TWF_SYSTEMPARAMETER WHERE  PARA_CATEGORY =16 ORDER BY SEQ ASC";
        //Base rBase = new Base(new DynamicDict().getConnection());
        receiverList = new LinkedList<String>();
        DynamicDict receiverDict = base.query("get email receiver", "EMAIL_RECEIVER", rSql,new String[]{});
        if(receiverDict.getCount("EMAIL_RECEIVER")>0){
            for (int i = 0; i < receiverDict.getCount("EMAIL_RECEIVER"); i++)
            {
                Map<String,String> map_value = new HashMap<String,String>();
                map_value = (Map<String, String>)receiverDict.getValueByName("EMAIL_RECEIVER",i);
                receiverList.add(map_value.get("PARA_VALUE"));
            }
        }
    }

    @Override
    public int perform(DynamicDict dict)
        throws BaseAppException
    {
        //判断工单状态和等级
        String level_order = dict.getString("WORK_ORDER_LEVEL");
        String state_order = dict.getString("WORK_ORDER_STATE");
        //String receiver = dict.getString("STAFF_EMAIL");
        Properties prop=new Properties();
        //邮件主题、内容、发送者、密码、工单等级、状态
        String subject = "",content = "", sender = "",password = "" ,level = "", state = "";
        prop.put(MAIL_SMTP_AUTH, MAIL_SMTP_AUTH_VALUE);
        logger.info("get email config info map :"+map);
        if(!CollectionUtils.isEmpty(map)){

            //邮件服务器
            prop.put(EMAIL_HOST, map.get("FOS_EMAIL_HOST"));
            //邮件简单协议
            prop.put(MAIL_TRANSPORT_PROTOCOL, map.get("FOS_EMAIL_TRANSPORT_PROTOCOL"));
            //邮件端口
            prop.put(MAIL_SMTP_PORT, map.get("FOS_EMAIL_PORT"));
            //密码（授权码非邮件用户登陆密码）
            password = map.get("FOS_EMAIL_SENDER_PASSWORD");
            //邮件主题
            subject = map.get("FOS_EMAIL_TITLE");
            //邮件内容
            content = map.get("FOS_EMAIL_CONTENT").replace("$(staffname)", dict.getString("STAFF_NAME")).replace("$(workorderno)", dict.getString("WORK_ORDER_NO"));
            //用户名
            sender = map.get("FOS_EMAIL_SENDER_USERNAME");
            //工单状态
            state = map.get("FOS_EMAIL_ORDER_STATE");
            //工单等级
            level = map.get("FOS_EMAIL_ORDER_LEVEL");
        }
       // if(level_order.equals(level) && state_order.equals(state)){
            try
            {
            	for (String receiver : receiverList) {
            		sendEamil(prop, subject, content, sender, password, receiver);
				}
            }
            catch (MessagingException e)
            {
                logger.error("send email fail caused by :"+e);
                throw new BaseAppException("send email fail caused by :"+e);
            }
        //}
        return 0;
    }

    //发送邮件
    public void sendEamil (Properties prop,String subject,String content,String sender,String password,String receiver) throws MessagingException{
        System.out.println("prop..."+prop);
        //使用java发送邮件5步骤
        //1.创建sesssion
        Session session=Session.getInstance(prop);
        //开启session的调试模式，可以查看当前邮件发送状态
        session.setDebug(true);
        //2.通过session获取Transport对象（发送邮件的核心API）
        Transport ts=session.getTransport();
        System.out.println(ts);
        //3.通过邮件用户名密码链接
        ts.connect(sender, password);
        //4.创建邮件
        Message msg=createSimpleMail(session,subject,content,sender,receiver) ;
        //5.发送电子邮件
        ts.sendMessage(msg, msg.getAllRecipients());
    } 

    //創建一封郵件
    public static MimeMessage createSimpleMail(Session session,String subject,String content,String sender,String receiver) throws AddressException,MessagingException{
        //创建邮件对象
        MimeMessage mm=new MimeMessage(session);
        //设置发件人
        mm.setFrom(new InternetAddress(sender));
        //设置收件人
        mm.setRecipient(Message.RecipientType.TO, new InternetAddress(receiver));
//        //设置抄送人
//        mm.setRecipient(Message.RecipientType.CC, new InternetAddress("632132852@qq.com"));
        mm.setSubject(subject);
        mm.setContent(content, EAIL_FORMATTER);
        return mm;
    }

    public static void main(String[] args) throws  MessagingException, BaseAppException
    {
        Properties localProperties = System.getProperties();
        localProperties.setProperty("ZSMART_HOME", "F:\\zsmart");
        DynamicDict dict = new DynamicDict();
        dict.setValueByName("STAFF_NAME", "wudi");
        dict.setValueByName("WORK_ORDER_NO", "123456");
        //dict.setValueByName("STAFF_EMAIL", "wudi@redoornetwork.com");
        //dict.setValueByName("WORK_ORDER_LEVEL", "A");
        //dict.setValueByName("WORK_ORDER_STATE", "0");

        System.out.println(FOSCommonCache.getInstance().getListByCode("FOS_EMAIL"));

//        EmailUtils.getInstance().perform(dict);
    }

}

　　上述代码中夹杂了具体业务中的代码，没有用的可以自行删除，发送邮件比较简单。

还有就是需要mail.jar文件。 点此下载