使用Spring发送email

Spring通过对Javamail的封装来简化发送email的步骤，提供易于使用的接口，发送时通过发送html类邮件或者结合velocity更能够提供样式丰富的邮件。需要引入spring的jar包（特别是spring-context-support-RELEASE.jar）及mail-1.4.5.jar。

首先定义自己的邮件发送工具类，封装用到的velocity引擎，邮件的主题、内容、模板等信息，然后提供邮件发送方法，使用spring提供的邮件接口实现类org.springframework.mail.javamail.JavaMailSenderImpl来发送邮件。

 

package com.xx.tools;

import java.util.Map;

import javax.mail.internet.MimeMessage;

import org.apache.velocity.app.VelocityEngine;
import org.springframework.mail.javamail.JavaMailSenderImpl;
import org.springframework.mail.javamail.MimeMessageHelper;
import org.springframework.ui.velocity.VelocityEngineUtils;

public class SpringMailSender {
	private JavaMailSenderImpl mailSender;
	private VelocityEngine velocityEngine;
	private String subject;
	private String content;
	private String templateName;

	public static void main(String[] args) {
	}

	public void sendGongDanMail() {

	}

	public void sendMail(String[] toArray, String[] ccArray, Map<String, Object> model) {

		// 建立邮件消息
		MimeMessage msg = mailSender.createMimeMessage();
		try {
			MimeMessageHelper helper = new MimeMessageHelper(msg, true);

			helper.setTo(toArray); // 接收人
			helper.setCc(ccArray);
			helper.setFrom("your@163.com"); // 发送人
			helper.setSubject(this.getSubject());
			String result = null;

                        //通过velocity组织内容，model存放模板中用到的变量
			result = VelocityEngineUtils.mergeTemplateIntoString(
					this.getVelocityEngine(), this.getTemplateName(), "GBK",
					model);

			//第二个参数为true，表示发送 "text/html" 类的HTML mail,默认发送 类型为"text/plain"的邮件

			helper.setText(result, true);
			
			// 发送邮件
			mailSender.send(msg);
		} catch (Exception e) {
			System.out.println(e);
		}

		System.out.println(" 邮件发送成功.. ");
	}

	public VelocityEngine getVelocityEngine() {
		return velocityEngine;
	}

	public void setVelocityEngine(VelocityEngine velocityEngine) {
		this.velocityEngine = velocityEngine;
	}

	public String getSubject() {
		return subject;
	}

	public void setSubject(String subject) {
		this.subject = subject;
	}

	public String getContent() {
		return content;
	}

	public void setContent(String content) {
		this.content = content;
	}

	public String getTemplateName() {
		return templateName;
	}

	public void setTemplateName(String templateName) {
		this.templateName = templateName;
	}

	public JavaMailSenderImpl getMailSender() {
		return mailSender;
	}

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

}

 

使用velocity的话，如果要在模板中调用java方法，需要新建一个对象，然后将引用放到model中，如下：

StringUtil stringutil = new StringUtil();
Map<String, Object> model=new HashMap<String, Object>();
model.put("stringutil", stringutil);

这样就能在vm模板中调用java方法，获得需要的结果了。

 

在applicationContext.xml中配置上面我们定义的工具类SpringMailSender，以及用到的velocityEngine，JavaMailSenderImpl（构造时提供邮件服务器信息已经发送邮件用到的用户名、密码等信息）。

 

<bean id="springMailSender" class="com.xx.tools.SpringMailSender">
        <property name="velocityEngine" ref="velocityEngine" />
        <property name="mailSender" ref="mailSenderImpl" />
        <property name="templateName" value="mail.vm" />
    </bean>

    <bean id="mailSenderImpl" class="org.springframework.mail.javamail.JavaMailSenderImpl">
        <property name="host" value="smtp.163.com" />
        <property name="username" value="username" />
        <property name="password" value="yourpass" />        
        <property name="defaultEncoding" value="UTF-8"></property>
        <property name="javaMailProperties">
            <props>
                <prop key="mail.smtp.auth">true</prop>
                <prop key="mail.smtp.timeout">25000</prop>
            </props>
        </property>
    </bean>
    
    <bean id="velocityEngine"
        class="org.springframework.ui.velocity.VelocityEngineFactoryBean">
        <property name="velocityProperties">
            <props>
                <prop key="resource.loader">class</prop>
                <prop key="class.resource.loader.class">
                    org.apache.velocity.runtime.resource.loader.ClasspathResourceLoader
                </prop>
                <prop key="velocimacro.library"></prop>
            </props>
        </property>
    </bean>