下面是一个例子使用Spring通过Gmail SMTP服务器来发送电子邮件附件。为了包含附件的电子邮件，你必须使用 Spring的JavaMailSender及MimeMessage 来代替 MailSender＆SimpleMailMessage。
2.Spring的邮件发件人
必须使用 JavaMailSender 代替 MailSender 发送附件，并用 MimeMessageHelper 附加的资源。在这个例子中，它会得到 “c:\\log.txt” 从文件系统(FileSystemResource)作为电子邮件附件的文本文件。
除了文件系统，您还可以从URL路径(UrlResource对象)，类路径(使用ClassPathResource)，InputStream(InputStreamResource)的任何资源......请参考 Spring 的 AbstractResource 类的实现。
File : MailMail.java
package com.yiibai.common;
import javax.mail.MessagingException;
import javax.mail.internet.MimeMessage;
import org.springframework.core.io.FileSystemResource;
import org.springframework.mail.MailParseException;
import org.springframework.mail.SimpleMailMessage;
import org.springframework.mail.javamail.JavaMailSender;
import org.springframework.mail.javamail.MimeMessageHelper;
public class MailMail
{
private JavaMailSender mailSender;
private SimpleMailMessage simpleMailMessage;
public void setSimpleMailMessage(SimpleMailMessage simpleMailMessage) {
this.simpleMailMessage = simpleMailMessage;
}
public void setMailSender(JavaMailSender mailSender) {
this.mailSender = mailSender;
}
public void sendMail(String dear, String content) {
MimeMessage message = mailSender.createMimeMessage();
try{
MimeMessageHelper helper = new MimeMessageHelper(message, true);
helper.setFrom(simpleMailMessage.getFrom());
helper.setTo(simpleMailMessage.getTo());
helper.setSubject(simpleMailMessage.getSubject());
helper.setText(String.format(
simpleMailMessage.getText(), dear, content));
FileSystemResource file = new FileSystemResource("C:\\log.txt");
helper.addAttachment(file.getFilename(), file);
}catch (MessagingException e) {
throw new MailParseException(e);
}
mailSender.send(message);
}
}
3. Bean配置文件
配置 mailSender bean，电子邮件模板，并指定Gmail的SMTP服务器电子邮件的详细信息。
File : Spring-Mail.xml
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-2.5.xsd">
<bean id="mailSender" class="org.springframework.mail.javamail.JavaMailSenderImpl">
<property name="host" value="smtp.gmail.com" />
<property name="port" value="587" />
<property name="username" value="yiibai.com@gmail.com" />
<property name="password" value="password" />
<property name="javaMailProperties">
<props>
<prop key="mail.smtp.auth">true</prop>
<prop key="mail.smtp.starttls.enable">true</prop>
</props>
</property>
</bean>
<bean id="mailMail" class="com.yiibai.common.MailMail">
<property name="mailSender" ref="mailSender" />
<property name="simpleMailMessage" ref="customeMailMessage" />
</bean>
<bean id="customeMailMessage"
class="org.springframework.mail.SimpleMailMessage">
<property name="from" value="from@no-spam.com" />
<property name="to" value="to@no-spam.com" />
<property name="subject" value="Testing Subject" />
<property name="text">
<value>
<![CDATA[
Dear %s,
Mail Content : %s
]]>
</value>
</property>
</bean>
</beans>
4. 运行它
package com.yiibai.common;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
public class App
{
public static void main( String[] args )
{
ApplicationContext context =
new ClassPathXmlApplicationContext("applicationContext.xml");
MailMail mm = (MailMail) context.getBean("mailMail");
mm.sendMail("Yiibai", "This is text content");
}
}
输出结果
Dear Yiibai, Mail Content : This is text content Attachment : log.txt
