下麵是一個例子使用Spring通過Gmail SMTP伺服器來發送電子郵件附件。為了包含附件的電子郵件，你必須使用 Spring的JavaMailSender及MimeMessage 來代替 MailSender＆SimpleMailMessage。
2.Spring的郵件發件人
必須使用 JavaMailSender 代替 MailSender 發送附件，並用 MimeMessageHelper 附加的資源。在這個例子中，它會得到 “c:\\log.txt” 從檔系統(FileSystemResource)作為電子郵件附件的文本檔。
除了檔系統，您還可以從URL路徑(UrlResource對象)，類路徑(使用ClassPathResource)，InputStream(InputStreamResource)的任何資源......請參考 Spring 的 AbstractResource 類的實現。
File : MailMail.java
package com.xuhuhu.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配置檔
配置 mailSender bean，電子郵件範本，並指定Gmail的SMTP伺服器電子郵件的詳細資訊。
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="xuhuhu.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.xuhuhu.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. 運行它
package com.xuhuhu.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("zaixian", "This is text content");
}
}
輸出結果
Dear zaixian, Mail Content : This is text content Attachment : log.txt