概念和协议

SMTP：Simple Message Transfer Protocal发送协议默认端口：25
POP：Post Office Protocal邮局协议。接收协议默认端口：110

1. 邮件发送的过程

商务综合管理-day6 javaMail,spring整合javaMail

2. 邮件发送的相关API

3. 邮件发送的工具类MailUtil的提取

public class MailUtil {


/**
 * 发送电子邮件
 * @param addr 收件人地址
 * @param subject 主题
 * @param text 内容
 * @throws MessagingException
 */
public static void sendMail(String addr,String subject,String text) throws MessagingException{
Properties props=new Properties();
props.put("mail.smtp.host","smtp.sina.com");
props.put("mail.smtp.auth","true");
Session session=Session.getInstance(props);
//构造信息体 
MimeMessage message =new MimeMessage(session);
 //发件地址 
Address address = new InternetAddress("wwwitcastcn@sina.com"); 
message.setFrom(address);
//收件地址 
Address toAddress = new InternetAddress(addr); 
message.setRecipient(MimeMessage.RecipientType.TO, toAddress);
//主题 
message.setSubject(subject);
//正文 
message.setText(text);
message.saveChanges();
Transport transport = session.getTransport("smtp"); 
transport.connect("smtp.sina.com", "wwwitcastcn@sina.com", "itcast"); //发送 
transport.sendMessage(message, message.getAllRecipients());
transport.close();

}

}

4. Spring对javaMail的支持

Spring邮件抽象层的主要包为org.springframework.mail。它包括了发送电子邮件的主要接口MailSender，和其对象SimpleMailMessage，它封装了简单邮件的属性如from, to,cc, subject,text。包里还包含一棵以MailException为根的checked Exception继承树，它们提供了对底层邮件系统异常的高级别抽象。要获得关于邮件异常层次的更丰富的信息。

为了使用JavaMail中的一些特色, 比如MIME类型的信件, spring提供了MailSender的一个子接口, 即org.springframework.mail.javamail.JavaMailSender。Spring还提供了一个回调接口org.springframework.mail.javamail.MimeMessagePreparator, 用于准备JavaMail的MIME信件。

这里简单的介绍了如何使用spring发送各种形式的邮件以及配置。

商务综合管理-day6 javaMail,spring整合javaMail

1、在src目录下建立mail.properties文件里边包含一下内容

mail.host=smtp.qq.com

mail.username=你的邮箱名
mail.password=你的邮箱密码
mail.from=发送方的邮箱

2、使用spring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-3.0.xsd">

<beanid="configurer"class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">

<propertyname="locations">

<list>

<value>classpath:mail.properties</value>

</list>

</property>

</bean>

<beanid="mailMessage"class="org.springframework.mail.SimpleMailMessage">

<propertyname="from">

</property>

</bean>

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

<propertyname="defaultEncoding"value="UTF-8"/>

<propertyname="host"value="${mail.host}"/>

<propertyname="username"value="${mail.username}"/>

<propertyname="password"value="${mail.password}"/>

<propertyname="javaMailProperties">

<props>

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

<propkey="mail.debug">true</prop>

<propkey="mail.smtp.timeout">0</prop>

</props>

</property>

</bean>

</beans>

5. 发送简单邮件

importjavax.mail.MessagingException;

importorg.springframework.context.ApplicationContext;

importorg.springframework.context.support.ClassPathXmlApplicationContext;

importorg.springframework.mail.MailSender;

importorg.springframework.mail.SimpleMailMessage;

/**

 * 本类测试邮件发送Html形式

 * @author Eternity_._

*/

public class SingleMailSend {

      static ApplicationContext actx = new ClassPathXmlApplicationContext(

                         "applicationContext.xml");

      static MailSender sender = (MailSender) actx.getBean("mailSender");

      static SimpleMailMessage mailMessage = (SimpleMailMessage) actx.getBean("mailMessage");

      public static voidmain(String args[]) throws MessagingException {

               mailMessage.setSubject("你好");

               mailMessage.setText("这个是一个通过Spring框架来发送邮件的小程序");

               mailMessage.setTo("9197****1@qq.com");

               sender.send(mailMessage);

6. 发送带有图片的邮件，以嵌入HTML的方式

importjava.io.File;

importjavax.mail.MessagingException;

importjavax.mail.internet.MimeMessage;

importorg.springframework.context.ApplicationContext;

importorg.springframework.context.support.ClassPathXmlApplicationContext;

importorg.springframework.core.io.FileSystemResource;

importorg.springframework.mail.javamail.JavaMailSenderImpl;

importorg.springframework.mail.javamail.MimeMessageHelper;

public class SpringAttachedImageMail {

      public static voidmain(String[] args) throws MessagingException {

               ApplicationContext ctx = new ClassPathXmlApplicationContext(

                                  "applicationContext.xml");

               JavaMailSenderImpl sender = (JavaMailSenderImpl) ctx

                                  .getBean("mailSender");

               MimeMessage mailMessage = sender.createMimeMessage();

               MimeMessageHelper messageHelper = new MimeMessageHelper(mailMessage,true);

               messageHelper.setFrom("9197****1@qq.com");

               messageHelper.setTo("9197****1@qq.com");

               messageHelper.setSubject("测试邮件中嵌套图片!！");

               // true 表示启动HTML格式的邮件

               messageHelper.setText(

                                  "<html><head></head><body><h1>hello!!spring image html mail</h1>"

                                            +"<a href=http://www.baidu.com>baidu</a>"  + "<img src=cid:image/></body></html>", true);

                FileSystemResource img = new FileSystemResource(new File("单.png"));

               messageHelper.addInline("image", img);//跟cid一致

               sender.send(mailMessage);

               System.out.println("邮件发送成功...");

7. 发送带附件的邮件

importjava.io.File;

importjavax.mail.MessagingException;

importjavax.mail.internet.MimeMessage;

importorg.springframework.context.ApplicationContext;

importorg.springframework.context.support.ClassPathXmlApplicationContext;

importorg.springframework.core.io.FileSystemResource;

importorg.springframework.mail.javamail.JavaMailSenderImpl;

importorg.springframework.mail.javamail.MimeMessageHelper;

public class SpringAttachedImageMail {

      public static voidmain(String[] args) throws MessagingException {

               ApplicationContext ctx = new ClassPathXmlApplicationContext(

                                  "applicationContext.xml");

               JavaMailSenderImpl sender = (JavaMailSenderImpl) ctx

                                  .getBean("mailSender");

               MimeMessage mailMessage = sender.createMimeMessage();

               MimeMessageHelper messageHelper = new MimeMessageHelper(mailMessage,true);

               messageHelper.setFrom("9197****1@qq.com");

               messageHelper.setTo("9197****1@qq.com");

               messageHelper.setSubject("测试邮件中嵌套图片!！");

               // true 表示启动HTML格式的邮件

               messageHelper.setText(

                                  "<html><head></head><body><h1>hello!!spring image html mail</h1>"

                                            +"<a href=http://www.baidu.com>baidu</a>"  + "<img src=cid:image/></body></html>", true);

               FileSystemResource img = new FileSystemResource(new File("单.png"));

               messageHelper.addAttachment("单.png", file);//添加到附件

               sender.send(mailMessage);

               System.out.println("邮件发送成功...");

8. 用户注册时的邮件发送

public void saveOrUpdate(User entity) {

if(UtilFuns.isEmpty(entity.getId())){

//说明是新增

String id = UUID.randomUUID().toString();

entity.setId(id);

entity.getUserInfo().setId(id);//基于一对一的主键关联

//引入Shiro后，进行密码的初始化

entity.setPassword(Encrypt.md5(SysConstant.DEFAULT_PASS, entity.getUserName()));

baseDao.saveOrUpdate(entity);

//发送邮件

mailMessage.setSubject("你好");

mailMessage.setText("尊敬的"+entity.getUserInfo().getName()+",您的用户名："+entity.getUserName()+",初始密码为:123456");

mailMessage.setTo(entity.getUserInfo().getEmail());

mailSender.send(mailMessage);

}else{

baseDao.saveOrUpdate(entity);

}

注意,在注册邮箱时，为了能发送成功，请进行如下调整。

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商务综合管理-day6 javaMail,spring整合javaMail

概念和协议

1. 邮件发送的过程

3. 邮件发送的工具类MailUtil的提取

4. Spring对javaMail的支持

5. 发送简单邮件

6. 发送带有图片的邮件，以嵌入HTML的方式

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