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在上一篇Spring电子邮件教程，硬编码的所有电子邮件属性和消息的方法体中的内容，这是不实际的，应予以避免。应该考虑在Spring bean 配置文件中定义电子邮件模板。

1.Spring的邮件发件人

Java类使用 Spring的MailSender接口发送电子邮件，并使用 String.Format 传递变量bean配置文件替换电子邮件中的 '%s'。

File : MailMail.java

package com.yiibai.common;import org.springframework.mail.MailSender;
import org.springframework.mail.SimpleMailMessage;public class MailMail
{private MailSender mailSender;private SimpleMailMessage simpleMailMessage;public void setSimpleMailMessage(SimpleMailMessage simpleMailMessage) {this.simpleMailMessage = simpleMailMessage;}public void setMailSender(MailSender mailSender) {this.mailSender = mailSender;}public void sendMail(String dear, String content) {SimpleMailMessage message = new SimpleMailMessage(simpleMailMessage);message.setText(String.format(simpleMailMessage.getText(), dear, content));mailSender.send(message);}	
}

2. Bean的配置文件

定义电子邮件模板“customeMailMessage' 和邮件发件人信息的bean配置文件。

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="username" /><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

Dear Yiibai,Mail Content : This is text content

代码下载 –  http://pan.baidu.com/s/1c0UPsFA