使用spring 并加载模板发送Email 发邮件 java 模板

以下例子是使用spring发送email，然后加载到固定的模板，挺好的，大家可以试试

需要使用到spring-context 包 和 com.springsource.org.apache.velocity-1.6.2.jar 其他都是常用包，自选，包括commons 系列包

代码如下

package asia.wildfire.mail;import java.io.File;import java.util.HashMap;import java.util.Map;import java.util.Properties;import javax.mail.internet.MimeMessage;import org.apache.velocity.app.VelocityEngine;import org.springframework.core.io.FileSystemResource;import org.springframework.mail.javamail.JavaMailSender;import org.springframework.mail.javamail.JavaMailSenderImpl;import org.springframework.mail.javamail.MimeMessageHelper;import org.springframework.mail.javamail.MimeMessagePreparator;import org.springframework.ui.velocity.VelocityEngineUtils;/** * Created with IntelliJ IDEA. * User: liuxiaochen * Date: 13-9-22 * Time: 下午6:50 * 修改描述 */public class ActsocialMailSender {    //从配置文件中读取相应的邮件配置属性    private static final String emailHost = "smtp.gmail.com";    private static final String userName = "****@gmail.com";    private static final String password = "********";    private static final String mailAuth = "true";    private static Map<String, Object> proMap = null;    private static JavaMailSenderImpl instance = null;    private static VelocityEngine velocityEngine = null;    static {        proMap = new HashMap<String, Object>();        proMap.put("resource.loader", "class");        proMap.put("class.resource.loader.class", "org.apache.velocity.runtime.resource.loader.ClasspathResourceLoader");    }    public static JavaMailSender getInstance() {        if (null == instance) {            synchronized (JavaMailSenderImpl.class) {                if (null == instance) {                    instance = new JavaMailSenderImpl();                    instance.setHost(emailHost);                    instance.setUsername(userName);                    instance.setPassword(password);                    Properties properties = new Properties();                    properties.setProperty("mail.smtp.auth", mailAuth);                    //使用gmail发送邮件是必须设置如下参数的 主要是port不一样                    if (emailHost.indexOf("smtp.gmail.com")>=0) {                        properties.setProperty("mail.smtp.socketFactory.class", "javax.net.ssl.SSLSocketFactory");                        properties.setProperty("mail.smtp.socketFactory.fallback", "false");                        properties.setProperty("mail.smtp.port", "465");                        properties.setProperty("mail.smtp.socketFactory.port", "465");                    }                    instance.setJavaMailProperties(properties);                }            }        }        return instance;    }    public static VelocityEngine getVelocityEngineInstance() {        if (null == velocityEngine) {            synchronized (VelocityEngine.class) {                if (null == velocityEngine) {                    velocityEngine = new VelocityEngine();                    for (Map.Entry<String, Object> entry : proMap.entrySet()) {                        velocityEngine.setProperty(entry.getKey(), entry.getValue());                    }                }            }        }        return velocityEngine;    }    public static void sendEmail(final Map<String,Object> model,final String subject,final String vmfile,final String[] mailTo,final String [] files)    {        MimeMessagePreparator preparator = new MimeMessagePreparator() {            //注意MimeMessagePreparator接口只有这一个回调函数            public void prepare(MimeMessage mimeMessage) throws Exception            {                MimeMessageHelper message = new MimeMessageHelper(mimeMessage,true,"GBK");                //这是一个生成Mime邮件简单工具，如果不使用GBK这个，中文会出现乱码                //如果您使用的都是英文，那么可以使用MimeMessageHelper message = new MimeMessageHelper(mimeMessage);                message.setTo(mailTo);//设置接收方的email地址                message.setSubject(subject);//设置邮件主题                message.setFrom(userName);//设置发送方地址                String text = VelocityEngineUtils.mergeTemplateIntoString(                        ActsocialMailSender.getVelocityEngineInstance(), vmfile, "UTF-8", model);                //从模板中加载要发送的内容，vmfile就是模板文件的名字                //注意模板中有中文要加GBK，model中存放的是要替换模板中字段的值                message.setText(text, true);                //将发送的内容赋值给MimeMessageHelper,后面的true表示内容解析成html                //如果您不想解析文本内容，可以使用false或者不添加这项                FileSystemResource file;                for(String s:files)//添加附件                {                    file = new FileSystemResource(new File(s));//读取附件                    message.addAttachment(s, file);//向email中添加附件                }            }        };        ActsocialMailSender.getInstance().send(preparator);//发送邮件    }        public static void sendAlertEmail(final Map<String,Object> model,final String[] mailTo){    sendEmail(model, "", "", mailTo, new String[]{});    }}

以上代码就是发送邮件所需要的代码，可以看下

测试类

public class ActsocialEmailTest {    public static void main(String[] args) {        Map<String,Object> model = new HashMap<String,Object>();        model.put("userName","xiaochen.liu");        model.put("emailAddress", "[e-mail]");        ActsocialMailSender.sendEmail(model,"欢迎加入", "welcome.vm",new String[]{"****@gmail.com"},new String[]{});    }}

模板文件如下

welcome.vm

<html><body><h3>您好 $!{userName}, 欢迎您加入actsocial!</h3><div>    您的email地址是<a href="mailto:${emailAddress}">$!{emailAddress}</a>.    本条信息是系统自动发送，请勿回复！</div></body></html>

好了就这么多