Java

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");