Spring邮件服务之附件：Maven + Spring SMTP Mail With Attachment (一)

环境：
JDK 1.6
Spring 2.5.6
Javamail 1.4.4
Maven 3.0.4
Myeclipse 8.6.1

项目结构：

spring-smtp-mail-attachment.xml
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd">














true

Email.java

package com.fancy.util;

import javax.mail.internet.MimeMessage;
import org.springframework.core.io.ClassPathResource;
import org.springframework.mail.SimpleMailMessage;
import org.springframework.mail.javamail.JavaMailSender;
import org.springframework.mail.javamail.MimeMessageHelper;
/**
* -----------------------------------------
* @文件: Email.java
* @作者: fancy www.2cto.com
* @邮箱: fancydeepin@yeah.net
* @时间: 2012-6-12
* @描述: 发送Email工具类
* -----------------------------------------
*/
public class Email {

private JavaMailSender javaMailSender;
private SimpleMailMessage simpleMailMessage;

/**
* @方法名: sendMail
* @参数名：@param subject 邮件主题
* @参数名：@param content 邮件主题内容
* @参数名：@param to 收件人Email地址
* @描述语: 发送邮件
*/
public void sendMail(String subject, String content, String to) {

try {
MimeMessage mimeMessage = javaMailSender.createMimeMessage();
/**
* new MimeMessageHelper(mimeMessage,true)之true个人见解：
* 关于true参数,官方文档是这样解释的：
* use the true flag to indicate you need a multipart message
* 翻译过来就是：使用true,以表明你需要多个消息
* 再去翻一下MimeMessageHelper的API,找到这样一句话：
* supporting alternative texts, inline elements and attachments
* 也就是说,如果要支持内联元素和附件就必须给定第二个参数为true
* 否则抛出 java.lang.IllegalStateException 异常
*/
MimeMessageHelper messageHelper = new MimeMessageHelper(mimeMessage,true);
messageHelper.setFrom(simpleMailMessage.getFrom()); //设置发件人Email
messageHelper.setSubject(subject); //设置邮件主题
messageHelper.setText(content); //设置邮件主题内容
messageHelper.setTo(to); //设定收件人Email
/**
* ClassPathResource：很明显就是类路径资源,我这里的附件是在项目里的,所以需要用ClassPathResource
* 如果是系统文件资源就不能用ClassPathResource,而要用FileSystemResource,例：
* FileSystemResource file = new FileSystemResource(new File("D:/Readme.txt"));
*/
ClassPathResource file = new ClassPathResource("attachment/Readme.txt");
/**
* MimeMessageHelper的addAttachment方法：
* addAttachment(String attachmentFilename, InputStreamSource inputStreamSource)
* InputStreamSource是一个接口,ClassPathResource