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javaMail

JavaMail概述：

       JavaMail是由Sun定义的一套收发电子邮件的API，不同的厂商可以提供自己的实现类。但它并没有包含在JDK中，而是作为JavaEE的一部分。

javaMail常见的邮件协议包括：

SMTP:简单的邮件传输协议，用于发送电子邮件协议；

POP3：用于接收电子邮件的标准邮件协议；

IMAP：互联网消息协议，是POP3的代替协议

这三种协议都有对应SSL加密传输的协议，分别是SMTPS，POP3S和IMAPS。

下面我们看一个例子来简单的了解一下Javamail

1.使用Spring发送带附件的电子邮件

大配置

<?xml version="1.0" encoding="UTF-8"?>

<beans

    xmlns="http://www.springframework.org/schema/beans"

    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

    xmlns:p="http://www.springframework.org/schema/p"

    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.1.xsd">

    <bean id="mailSender" class="org.springframework.mail.javamail.JavaMailSenderImpl">

        <property name="host" value="192.168.8.71"></property><!-- 服务器 -->

        <property name="port" value=""></property><!-- 端口 -->

        <property name="username" value="wxk"></property><!-- 用户名 -->

        <property name="password" value="wxk"></property><!-- 密码 -->

        <property name="protocol" value="smtp" ></property><!-- 协议 -->

        <property name="defaultEncoding" value="utf-8"></property><!-- 默认编码 -->

        <property name="javaMailProperties">

            <props>

                <!-- 设置SMTP服务器需要用户验证  -->

                <prop key="mail.smtp.auth">true</prop>

            </props>

        </property>

    </bean>

    <bean id="mailWithAttachment" class="cn.bdqn.MailWithAttachment">

        <property name="mailSender" ref="mailSender"></property>

    </bean>

</beans>

log4j.properties

log4j.rootLogger=info,console

log4j.appender.console=org.apache.log4j.ConsoleAppender

log4j.appender.console.layout=org.apache.log4j.PatternLayout

log4j.appender.console.layout.ConversionPattern=%d %p [%c] - %m%n
//测试
package cn.bdqn;

import org.springframework.context.ApplicationContext;

import org.springframework.context.support.ClassPathXmlApplicationContext;

public class MailTest {

    public static void main(String[] args){

        ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");

        try{

            MailWithAttachment mailWithAttach = (MailWithAttachment)context.getBean("mailWithAttachment");

            mailWithAttach.send();

        }catch(Exception e){

            System.out.print(e.toString());

        }

    }

}

MailWithAttachment

package cn.bdqn;

import java.io.IOException;

import javax.mail.MessagingException;

import javax.mail.internet.MimeMessage;

import javax.mail.internet.MimeUtility;

import org.springframework.core.io.ClassPathResource;

import org.springframework.mail.javamail.JavaMailSender;

import org.springframework.mail.javamail.MimeMessageHelper;

public class MailWithAttachment {

    private JavaMailSender mailSender; //必须使用 JavaMailSender

    public void setMailSender(JavaMailSender mailSender) {

        this.mailSender = mailSender;

    }

    public void send() throws MessagingException,IOException{

        MimeMessage mimeMessage = mailSender.createMimeMessage();

        MimeMessageHelper helper = new MimeMessageHelper(mimeMessage, true, "UTF-8");

        helper.setFrom("[email protected]");

        helper.setTo("[email protected]");

        helper.setSubject("等待是种执着");

        helper.setText("青鸟的岁月似流年，又有多少青春如风逝去，不要让这座城市只留下无尽的回忆，却没有留下我们一起走过的青春，" +

                "青春不是生命的一瞬，而是一种自然的心境！");

        //添加附件1

        ClassPathResource file1 = new ClassPathResource("/cn/bdqn/attachfiles/QQ图片20161214191111.jpg");

        helper.addAttachment(file1.getFilename(), file1.getFile());

        //添加附件2：附件的文件名为中文时，需要对文件名进行编码转换，解决乱码问题

        ClassPathResource file2 = new ClassPathResource("/cn/bdqn/attachfiles/附件测试文件.doc");

        helper.addAttachment(MimeUtility.encodeWord(file2.getFilename()),file2.getFile());

        mailSender.send(mimeMessage);

    }

}

javaMail-LMLPHP

上传邮件成功

2.使用Spring发送简单邮件

大配置和log4j还要架包同上省略

Mail
package cn.bdqn;

import org.springframework.mail.MailSender;

import org.springframework.mail.SimpleMailMessage;

public class Mail {

    private MailSender mailSender;

    public void setMailSender(MailSender mailSender) {

        this.mailSender = mailSender;

    }

    public void send(){

        SimpleMailMessage message = new SimpleMailMessage();

        message.setFrom("[email protected]");

        message.setTo("[email protected]");

        message.setSubject("会议通知fsb发布");

        message.setText("jerry你好！请于明天下午16:00 准时到B01会议室召开技术讨论会。");

        mailSender.send(message);

    }

}

MailTest

package cn.bdqn;

import org.springframework.context.ApplicationContext;

import org.springframework.context.support.ClassPathXmlApplicationContext;

public class MailTest {

    public static void main(String[] args){

        ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");

        /*测试简单邮件*/

        Mail mail = (Mail)context.getBean("mail");

        mail.send();

    }

}

　　

3.使用Spring邮件服务和FreeMarker模板技术发送邮件

javaMail-LMLPHP

大配置和log4j还要架包同上省略

实体层

package cn.bdqn.pojo;

public class Mail {

    private String to;

    private String subject;

    private String content;

    public String getTo() {

        return to;

    }

    public void setTo(String to) {

        this.to = to;

    }

    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;

    }

}

LeaveService

package cn.bdqn.service;

import cn.bdqn.pojo.Mail;

public class LeaveService {

    private MailService mailService;

    public void setMailService(MailService mailService) {

        this.mailService = mailService;

    }

    public void updateLeave(){

        //省略审批请假申请

        //查询数据库获取相关信息

        String approver = "张来";

        Mail mail = new Mail();

        mail.setTo("[email protected]");

        mail.setSubject("请假流程确认邮件");

        StringBuffer sb = new StringBuffer();

        sb.append("<html><head>");

        sb.append("<meta http-equiv=\"content-type\" content=\"text/html;charset=utf-8\">");

        sb.append("<head><body>");

        sb.append("<font color='blue' size='4' face='Arial'>");

        sb.append("OA系统温馨提示：</font><br/><br/>");

        sb.append("    ");

        sb.append("在OA系统中，您提交的“请假流程” "+ approver +" 已经审批完成，点击如下链接可登陆系统查看流程，谢谢。" +

                "如果登录时忘记密码，可以在网站登录页找回。<br/>");

        sb.append("<br/><br/>    <a href='http://www.jboa.com'>http://www.jboa.com</a>");

        sb.append("<br/><br/>    -----本邮件为系统自动发出，请勿回复-----");

        mail.setContent(sb.toString());

        try{

            mailService.send(mail);

        }catch(Exception e){

            e.printStackTrace();

        }

    }

}

　　MailService

package cn.bdqn.service;

import java.io.IOException;

import javax.mail.MessagingException;

import javax.mail.internet.MimeMessage;

import org.springframework.mail.javamail.JavaMailSender;

import org.springframework.mail.javamail.MimeMessageHelper;

import cn.bdqn.pojo.Mail;

public class MailService {

    private JavaMailSender mailSender; //必须使用 JavaMailSender

    public void setMailSender(JavaMailSender mailSender) {

        this.mailSender = mailSender;

    }

    public void send(Mail mail) throws MessagingException,IOException{

        MimeMessage mimeMessage = mailSender.createMimeMessage();

        MimeMessageHelper helper = new MimeMessageHelper(mimeMessage, true, "UTF-8");

        helper.setFrom("[email protected]");

        helper.setTo(mail.getTo());

        helper.setSubject(mail.getSubject());

        helper.setText(mail.getContent(),true);

        mailSender.send(mimeMessage);

        System.out.print("发送完成！");

    }

}

　　MailTest

package cn.bdqn;

import org.springframework.context.ApplicationContext;

import org.springframework.context.support.ClassPathXmlApplicationContext;

import cn.bdqn.service.LeaveService;

public class MailTest {

    public static void main(String[] args){

        ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");

        LeaveService service = (LeaveService)context.getBean("leaveService");

        service.updateLeave();

    }

}

最简单的站内传送Email上传，不需要大配置、log4j、架包

定义一个EmailAuthenticator类 extend Authenticator

public class EmailAuthenticator extends Authenticator {

	private String username;

    private String userpass;

	public void setUsername(String username) {

		this.username = username;

	}

	public void setUserpass(String userpass) {

		this.userpass = userpass;

	}

	public EmailAuthenticator() {

	}

	public EmailAuthenticator(String username, String userpass) {

		this.username = username;

		this.userpass = userpass;

	}

	public PasswordAuthentication getPasswordAuthentication(){

		return new PasswordAuthentication(username,userpass);

	}

定义Mail.java用来定义发件人和收件人的信息

public class Mail {

  private String mailServer,from,to,mailSubject,mailContent;

  private String username,password;

  public Mail(){

	  //设置邮件信息

	  //进行认证登录的用户名

	  username="[email protected]";

	  //认证密码

	  password="bxq";

	  //认证的邮箱对应的邮件服务器

	  mailServer="192.168.8.71";

	  //发件人信息

	  from="bxq";

	  //收件人信息

	  to="[email protected]";

	  //邮件标题

	  mailSubject="我们都是好孩子";

	  //邮件内容

	  mailContent="这是一封测试邮件！如有雷同，纯属不可能";

  }

  //设置邮件服务器

  @SuppressWarnings("static-access")

public  void send(){

	  Properties prop=System.getProperties();

	  //指定邮件server

	  prop.put("mail.smtp.host", mailServer);

	  //是否开启认证

	  prop.put("mail.smtp.auth", "true");

	  //smtp协议的

	  prop.put("mail.smtp.port", "25");

	  //产生Session服务

	  EmailAuthenticator mailauth=new EmailAuthenticator(username, password);

	  Session mailSession=Session.getInstance(prop,(Authenticator)mailauth);

	   try {

		   //封装Message对象

		   Message message=new MimeMessage(mailSession);

		   message.setFrom(new InternetAddress(from)); //发件人

		   message.setRecipient(Message.RecipientType.TO, new InternetAddress(to));//收件人

		   message.setSubject(mailSubject);

		   //设置内容(设置字符集处理乱码问题)

		   message.setContent(mailContent,"text/html;charset=gbk");

		   message.setSentDate(new Date());

		   //创建Transport实例，发送邮件

		   Transport tran=mailSession.getTransport("smtp");

		   tran.send(message,message.getAllRecipients());

		   tran.close();

		} catch (Exception e) {

			e.printStackTrace();

		}

  }

测试 Test.java

public class Test {

	public static void main(String[] args) {

		Mail mail=new Mail();

		mail.send();

		System.out.println("success!");

	}

}

javaMail-LMLPHP

Transport和Store：传输和存储

邮件操作只有发送或接收两种处理方法，javaMail将两个不同的操作描述传输（javax.mail.Transport）和存储（javax.mail.Store），传输对应邮件的发送，而存储对应邮件的接收。

Session提供了几个用于创建Transport和Store实例的方法，在具体讲解这些方法之前，我们事先了解一下Session创建Transport和Store的内部机制。我们知道提供者在javamail.providers配置文件中为每一种支持的邮件协议定义了实现类，Session根据协议类型（stmp、pop3等）和邮件操作方式（传输和存储）这两个信息就可以定位到一个实例类上。比如，指定stmp协议和transport类型后，Session就会使用com.sun.mail.smtp.SMTPTransport实现类创建一个Transport实例，而指定pop3协议和store类型时，则会使用com.sun.mail.pop3.POP3Store实例类创建一个Store实例。Session提供了多个重载的getTransport()和getStore()方法，这些方法将根据Session中Properties属性设置情况进行工作，影响这两套方法工作的属性包括：

属性名

说明

mail.transport.protocol

默认的邮件传输协议，例如，smtp

mail.store.protocol

默认的存储邮件协议，例如：pop3

mail.host

默认的邮件服务地址，例如：192.168.67.1

mail.user

默认的登陆用户名，例如：zapldy

05-08 15:41
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