由于您使用的是 Spring,因此您可以使用其内置的电子邮件支持来发送电子邮件。因此,您如何从磁盘或其他地方检索文件并不重要。您可以使用 MimeMessageHelper 发送带有附件的电子邮件,并为邮件主机上的帐户指定用户名和密码以进行身份验证,如下所示:
public class EmailNotifier {
private JavaMailSenderImpl mailSender;
public void setMailSender(JavaMailSenderImpl mailSender) {
this.mailSender = mailSender;
}
public void sendMail(InternetAddress fromAddress, InternetAddress toAddress, String subject, String msg) {
MimeMessage message = mailSender.createMimeMessage();
try {
// use the true flag to indicate you need a multipart message
MimeMessageHelper helper = new MimeMessageHelper(message, true);
helper.setFrom(fromAddress);
helper.setTo(toAddress);
helper.setSubject(subject);
helper.setText(msg);
// let's attach the infamous windows Sample file (this time copied to c:/)
FileSystemResource file = new FileSystemResource(new File("c:/test.xls"));
helper.addAttachment("test.xls", file);
mailSender.send(message);
} catch (MessagingException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
并在您的 bean 配置文件中配置一个 JavaMailSenderImpl bean。这是通过 Gmail 发送电子邮件。
豆类.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.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="adminxxxx" />
<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="emailNotifier" class="com.examples.EmailNotifier">
<property name="mailSender" ref="mailSender" />
</bean>
</beans>
这只是为了测试:
public class MailApp {
public static void main( String[] args )
{
ApplicationContext context =
new ClassPathXmlApplicationContext("beans.xml");
EmailNotifier emailNotifier = (EmailNotifier) context.getBean("emailNotifier");
try {
emailNotifier.sendMail(new InternetAddress("adminxxxx@gmail.com"),
new InternetAddress("recipientxxxx@gmail.com"),
"Email Alert!",
"Hello User, This is a test email \n No response required.");
} catch (AddressException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
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