Java - Java Mail邮件开发（3）spring +Java Mail + Velocity

2022-11-29 22:56:54

1、spring + Java Mail + Velocity

项目结构：

注意：用户包中引入各包的顺序问题。如velocity-2.1。

beans.xml

<?xml version="1.0" encoding="UTF-8"?>

<!-- spring配置文件的根元素，使用spring-beans-4.0.xsd语义约束 -->

<beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

       xmlns="http://www.springframework.org/schema/beans"

       xsi:schemaLocation="http://www.springframework.org/schema/beans

       http://www.springframework.org/schema/beans/spring-beans-4.0.xsd">

    <bean class="org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor"></bean>

    <bean id="propertyConfigurer"

         class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">

         <property name="locations" value="mail.properties"/>

    </bean>

    <bean id="mailSender" class="org.springframework.mail.javamail.JavaMailSenderImpl">

       <property name="host" value="${mail.host}"/>

       <property name="username" value="${mail.user}"/>

       <property name="password" value="${mail.pwd}"/>

    </bean>

    <bean id="javaMailSenderService" class="com.lfy.sendmail.JavaMailSenderService"/>

    <bean id="javaMailSenderImplService" class="com.lfy.sendmail.JavaMailSenderImplService"/>

    <!-- VelocityEngineFactory -->

    <bean id="velocityEngineFactory" 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>

         </props>

      </property>

    </bean>

    <bean id="velocityEngineService" class="com.lfy.velocity.VelocityEngineService"/>

</beans>

VelocityEngineService.java

package com.lfy.velocity;

import org.apache.velocity.app.VelocityEngine;

import org.springframework.beans.factory.annotation.Autowired;

public class VelocityEngineService {

    @Autowired

    private VelocityEngine velocityEngine;

    public VelocityEngine getVelocityEngine() {

        return velocityEngine;

    }

    public void setVelocityEngine(VelocityEngine velocityEngine) {

        this.velocityEngine = velocityEngine;

    }

}

JavaMailSenderImplService.java

package com.lfy.sendmail;

import javax.mail.internet.MimeMessage;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.mail.SimpleMailMessage;

import org.springframework.mail.javamail.JavaMailSenderImpl;

/**

 * 2、spring支持的第二种发送器JavaMailSenderImpl

 * @author lfy

 *

 */

public class JavaMailSenderImplService {

    @Autowired

    private JavaMailSenderImpl javaMailSenderImpl;

    public JavaMailSenderImpl getJavaMailSenderImpl() {

        return javaMailSenderImpl;

    }

    public void setJavaMailSenderImpl(JavaMailSenderImpl javaMailSenderImpl) {

        this.javaMailSenderImpl = javaMailSenderImpl;

    }

    /**

     * simple content

     * @param message

     */

    public void send(SimpleMailMessage message){

        javaMailSenderImpl.send(message);

        System.out.println("JavaMailSenderImpl:send silpleMessage successfully.");

    }

    /**

     * Velocity content

     * @param message

     */

    public void sendWithVelocity(MimeMessage message) {

        javaMailSenderImpl.send(message);

        System.out.println("JavaMailSenderImpl:send mimeMessage successfully.");

    }

}

index.vm

<html>

<head>

<style type="text/css">

h4{

    color:red;

    background:#efefef;

}

</style>

</head>

<body>

<h4>${user} </h4>

<p><p>

<i>${content}</i>

</body>

</html>

springJavaMailSender.java

package com.lfy.main;

import java.util.HashMap;

import java.util.Map;

import javax.mail.MessagingException;

import javax.mail.internet.MimeMessage;

import org.apache.velocity.app.VelocityEngine;

import org.springframework.context.ApplicationContext;

import org.springframework.context.support.ClassPathXmlApplicationContext;

import org.springframework.mail.javamail.MimeMessageHelper;

import org.springframework.ui.velocity.VelocityEngineUtils;

import com.lfy.sendmail.JavaMailSenderImplService;

import com.lfy.velocity.VelocityEngineService;

public class springJavaMailSender {

    public static void main(String[] agrs) throws MessagingException {

        //创建spring容器

        ApplicationContext ctx=new ClassPathXmlApplicationContext("beans.xml");

        JavaMailSenderImplService javaMailSenderImplService = (JavaMailSenderImplService)ctx.getBean("javaMailSenderImplService");

        VelocityEngine velocityEngine=(VelocityEngine)((VelocityEngineService)ctx.getBean("velocityEngineService")).getVelocityEngine();

        Map<String,Object> model=new HashMap<String,Object>();

        model.put("user", "Tomcat");

        model.put("content", "Hello");

        String emailText=VelocityEngineUtils.mergeTemplateIntoString(velocityEngine, "index.vm", "UTF-8", model);

        MimeMessage msg=javaMailSenderImplService.getJavaMailSenderImpl().createMimeMessage();

        MimeMessageHelper helper=new MimeMessageHelper(msg,true);

        helper.setFrom("xxxxxxxxxx@163.com");

        helper.setTo("xxxxxxxx@qq.com");

        helper.setCc("xxxxxxxx@163.com");

        helper.setSubject("Velocity模板测试");

        helper.setText(emailText, true);

        javaMailSenderImplService.sendWithVelocity(msg);

    }

}

运行效果：

2、使用Maven配置使用Velocity。整理中...

3、Velocity加载模板的3中方式

1》从文件加载模板文件（默认方式）

properties.setProperty("resource.loader", "file");

//设置velocity资源加载方式为file时的处理类

properties.setProperty("file.resource.loader.class","org.apache.velocity.runtime.resource.loader.FileResourceLoader");

2》从类路径加载模板文件

properties.setProperty("resource.loader", "class");

//设置velocity资源加载方式为file时的处理类

properties.setProperty("class.resource.loader.class", "org.apache.velocity.runtime.resource.loader.ClasspathResourceLoader");

3》从jar文件中加载模板文件

properties.setProperty("resource.loader", "jar");

//设置velocity资源加载方式为file时的处理类

properties.setProperty("jar.resource.loader.class", "org.apache.velocity.runtime.resource.loader.JarResourceLoader");

//设置jar包所在的位置

properties.setProperty("jar.resource.loader.path", "jar:file:/F:/quicksure_Server_Provider.jar");

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