Spring 整合javamail 用 gmail 发送邮件

Spring整合javamail成功之后，把大量的代码配置到spring的配置文件里了，从而降低了Javamail对邮箱、端口、协议、主题、内容…… 的耦合。在客户端上只需要调用一行代码就可以发送邮件了。

    首先不需要往项目的lib里导入jar，但是需要在tomcat的lib里导入3个jar文件activation.jar ，jspsmartupload.jar，mail.jar 导入这3个jar文件，这样tomcat就不会报错了。

 SendManagerService .java

<!--<br /> <br /> Code highlighting produced by Actipro CodeHighlighter (freeware)<br /> http://www.CodeHighlighter.com/<br /> <br /> -->package com.cgt.itspiderman.service.email;

public interface SendManagerService {
    public void sendMail(String email); 
}

 定义一个发送邮件的接口.


SendManagerServiceImp.java

<!--<br /> <br /> Code highlighting produced by Actipro CodeHighlighter (freeware)<br /> http://www.CodeHighlighter.com/<br /> <br /> -->package com.cgt.itspiderman.service.email;

import javax.mail.Message;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;

import org.springframework.mail.SimpleMailMessage;
import org.springframework.mail.javamail.JavaMailSender;
import org.springframework.mail.javamail.MimeMessagePreparator;

public class SendManagerServiceImp implements SendManagerService {

    private JavaMailSender mailSender;
    
    private SimpleMailMessage message;
        
    public void sendMail(final String email) {
        // TODO Auto-generated method stub
        
        MimeMessagePreparator preparator = new MimeMessagePreparator()
        {
            public void prepare(MimeMessage mimeMessage) throws Exception {
                
                mimeMessage.setRecipient(Message.RecipientType.TO, new InternetAddress(email));
                mimeMessage.setFrom(new InternetAddress(message.getFrom()));
                mimeMessage.setSubject(message.getSubject(),"gbk");
                mimeMessage.setText(message.getText(),"gbk");
            }
        };
        mailSender.send(preparator);
    
    }
    
    public JavaMailSender getMailSender() {
        return mailSender;
    }

    public void setMailSender(JavaMailSender mailSender) {
        this.mailSender = mailSender;
    }

    public SimpleMailMessage getMessage() {
        return message;
    }

    public void setMessage(SimpleMailMessage message) {
        this.message = message;
    }

}

发送邮件的实现类.

 然后在WEB-INF下面创建一个文件messages.properties    以后修改配置信息直接在这里修改就可以了。

<!--<br /> <br /> Code highlighting produced by Actipro CodeHighlighter (freeware)<br /> http://www.CodeHighlighter.com/<br /> <br /> -->host=smtp.gmail.com
username=[e-mail]
password=xxxxxx
port=465
mail.smtp.auth=true
mail.smtp.timeout=25000
mail.smtp.starttls.enable=true
mail.smtp.socketFactory.class=javax.net.ssl.SSLSocketFactory
mail.smtp.socketFactory.fallback=false
from=[e-mail]
subject=\u6807\u9898
text=\u5185\u5BB9\u554A

applicationContext.xml

<!--<br /> <br /> Code highlighting produced by Actipro CodeHighlighter (freeware)<br /> http://www.CodeHighlighter.com/<br /> <br /> -->  .......................

<bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
      <property name="locations">
        <list>
           <value>WEB-INF/mail.properties</value>
        </list> 
      </property> 
    </bean>

    <!-- gmail 发送邮箱的配置文件 -->
       <bean id="mailSender" class="org.springframework.mail.javamail.JavaMailSenderImpl">
           <property name="host">
               <value>${host}</value>
           </property>       
           <property name="username">
               <value>${username}</value>
           </property>
           <property name="password">
               <value>${password}</value>
           </property>
           <property name="port">
               <value>${port}</value>
           </property>
           <property name="javaMailProperties">
               <props>
                   <prop key="mail.smtp.auth">${mail.smtp.auth}</prop>
                   <prop key="mail.smtp.timeout">${mail.smtp.timeout}</prop>
                   <prop key="mail.smtp.starttls.enable">${mail.smtp.starttls.enable}</prop>
                   <prop key="mail.smtp.socketFactory.class">${mail.smtp.socketFactory.class}</prop>
                   <prop key="mail.smtp.socketFactory.fallback">${mail.smtp.socketFactory.fallback}</prop> 
               </props>
           </property>
       </bean>
       <bean id="mailMessage" class="org.springframework.mail.SimpleMailMessage">
           <property name="from">
               <value>${from}</value>
           </property>
           <property name="subject">
               <value>${subject}</value>
           </property>
           <property name="text">
               <value>${text}</value>
           </property>
       </bean>
       <bean id="sendmail" class="com.cgt.itspiderman.service.email.SendManagerServiceImp">
           <property name="mailSender" ref="mailSender"></property>
           <property name="message" ref="mailMessage"></property>
       </bean>
       <!-- end --> 

............................

<!--<br /> <br /> Code highlighting produced by Actipro CodeHighlighter (freeware)<br /> http://www.CodeHighlighter.com/<br /> <br /> -->public static void main(String[] args) {
        
        ApplicationContext context= null;
        context = new ClassPathXmlApplicationContext("applicationContext.xml");
        SendManagerService sms=    (SendManagerService)context.getBean("sendmail");
        sms.sendMail("[e-mail]");
    }

 如果是在struts2里使用的话需要在Action里加上private SendManagerService sendemail;（加上get和set），然后在spring里配置这个Action的时候加上<property name="sendemail" ref="sendmail"></property>
然后在Action里调用下面这一行代码就可以发送了。
sendemail.sendMail("[e-mail]");
  写到这里大家会问，如果需要动态的修改这个邮件的内容呢？方法很简单
     

<!--<br /> <br /> Code highlighting produced by Actipro CodeHighlighter (freeware)<br /> http://www.CodeHighlighter.com/<br /> <br /> -->  WebApplicationContext context=WebApplicationContextUtils.getRequiredWebApplicationContext(ServletActionContext.getServletContext());
        ((SimpleMailMessage) context.getBean("mailMessage")).setText("我现在修改了邮件的内容 呵呵呵");