郵件傳送程式碼書寫

1.導包

mail.jar

2.書寫程式碼

package com.itcast.mail;

import java.util.Properties;

import javax.mail.Authenticator;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.PasswordAuthentication;
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.MimeMessage.RecipientType;

public class MailUtils {

	//email:郵件發給誰  subject:主題  emailMsg：郵件的內容
	public static void sendMail(String email, String subject, String emailMsg)
			throws AddressException, MessagingException {
		
		// 1.建立一個程式與郵件伺服器會話物件 Session
		Properties props = new Properties();
		props.setProperty("mail.transport.protocol", "SMTP");//發郵件的協議
		props.setProperty("mail.host", "localhost");//傳送郵件的伺服器地址
		props.setProperty("mail.smtp.auth", "true");// 指定驗證為true

		// 建立驗證器
		Authenticator auth = new Authenticator() {
			public PasswordAuthentication getPasswordAuthentication() {
				return new PasswordAuthentication("tom", "123456");//發郵件的賬號的驗證
			}
		};

		Session session = Session.getInstance(props, auth);

		// 2.建立一個Message，它相當於是郵件內容
		Message message = new MimeMessage(session);

		message.setFrom(new InternetAddress("
 
[email protected]")); // 設定傳送者

		message.setRecipient(RecipientType.TO, new InternetAddress(email)); // 設定傳送方式與接收者

		message.setSubject(subject);//郵件的主題

		message.setContent(emailMsg, "text/html;charset=utf-8");

		// 3.建立 Transport用於將郵件傳送
		Transport.send(message);
	}
}

package com.itcast.mail;


import javax.mail.MessagingException;
import javax.mail.internet.AddressException;


public class SendMailTest {


public static void main(String[] args) throws AddressException, MessagingException {

MailUtils.sendMail("
 
[email protected]", "測試郵件","這是一封測試郵件");


}

}

實現定時傳送生日祝福

package com.itcast.birthday;

import java.sql.SQLException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.List;
import java.util.Timer;
import java.util.TimerTask;

import javax.mail.MessagingException;
import javax.servlet.ServletContextEvent;
import javax.servlet.ServletContextListener;

import org.apache.commons.dbutils.QueryRunner;
import org.apache.commons.dbutils.handlers.BeanListHandler;

import com.itcast.mail.MailUtils;

public class BirthdayListenner implements ServletContextListener {

	@Override
	public void contextDestroyed(ServletContextEvent arg0) {
		// TODO Auto-generated method stub

	}

	@Override
	public void contextInitialized(ServletContextEvent arg0) {
		// 當web應用器開啟任務調動--功能在使用者的生日當前傳送郵件
		// 開啟一個定時器
		Timer timer = new Timer();
		timer.scheduleAtFixedRate(new TimerTask() {

			@Override
			public void run() {
				// 為當前的生日的使用者傳送郵件
				//1.獲得今天過生日的人
//				獲得今天的日期
				SimpleDateFormat format=new SimpleDateFormat();
				String currentDate=format.format(new Date());
//				根據當前時間從資料查詢今天過生日的人
				QueryRunner runner =new QueryRunner(DataSourceUtils.getDataSource());
				String sql="select * from customer where birthday like ?";
				List<Customer> customerList=null;
				try {
					 customerList = runner.query(sql,new BeanListHandler<Customer>(Customer.class), "%"+currentDate+"%");
				} catch (SQLException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
//				2.發郵件
				if(customerList!=null&&customerList.size()>0){
					for(Customer c:customerList){
						String emailMsg="親愛的lucy"+c.getRealname();
						try {
							MailUtils.sendMail(c.getEmail(), "ceshi", emailMsg);
							System.out.println(c.getRealname());
						} catch (MessagingException e) {
							// TODO Auto-generated catch block
							e.printStackTrace();
						}
					}
				}
			}
		}, new Date(), 1000*30);
		// 實際開發中起始時間是一個固定的時間
		// 實際開發中間時間是一天
	}

}

 

package com.itcast.birthday;


public class Customer {


private String username;
private String password;
private String realname;
private String bithday;
private String email;
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 getRealname() {
return realname;
}
public void setRealname(String realname) {
this.realname = realname;
}
public String getBithday() {
return bithday;
}
public void setBithday(String bithday) {
this.bithday = bithday;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}


}