前言：項目中要做一個發送郵件的功能，在網上搜了一些代碼，說的都不是很完善。自己就整理了一個可以運行的項目。需要注意的地方是：如果發送人的郵箱是qq郵箱，那么需要在 設置->賬戶里面把√打上。spring里面的

<property name="host">
??? <value>smtp.126.com</value>
?? </property>
要配置成smtp.qq.com

步驟如下：

用spring做一個javaMail功能。

1、先建一個項目。java項目和web項目均可。

2、需要引入的jar包有：mail.jar，activation.jar（我用的是maven搭建的項目，在pom.xml中依賴了那兩個jar包）

3、在MyEclipse的項目里面加入spring的jar包

4、在項目中的 applicationContext-init.xml （名字可以任意改）文件中加入如下代碼：

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns=" http://www.springframework.org/schema/beans "
xmlns:xsi=" http://www.w3.org/2001/XMLSchema-instance "
xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd ">

<bean id="mailSender" <property name="host">
??? <value>smtp.126.com</value>
?? </property>
?? <property name="javaMailProperties">
??? <props>
???? <prop key="mail.smtp.auth">true</prop>
???? <prop key="mail.smtp.timeout">25000</prop>
??? </props>
?? </property>
?? <property name="username">
??? <value>xiaojunwei_1987</value>
?? </property>
?? <property name="password">

<!--這里的是配置自己郵箱的密碼，這里我輸入的是假的，以*代替了，呵呵要不你們就知道我的郵箱密碼了-->
??? <value>********</value>
?? </property>
</bean>
</beans>

java 代碼： 我自己加的注釋，不一定準確哦。

package com.techcenter.mail;
import java.util.ArrayList;
import java.util.Date;
import java.util.Iterator;
import java.util.List;
import javax.activation.DataHandler;
import javax.activation.FileDataSource;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Multipart;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeBodyPart;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeMultipart;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.springframework.mail.SimpleMailMessage;
import org.springframework.mail.javamail.JavaMailSender;
import org.springframework.mail.javamail.MimeMessagePreparator;
public class SpringMail {
public static void main(String[] args) throws Exception {
//讀取spring配置文件
??????? ApplicationContext ctx = new ClassPathXmlApplicationContext(" applicationContext-init.xml ");
??????? //強制返回spring郵件發送器
??????? JavaMailSender sender = (JavaMailSender) ctx.getBean("mailSender");
??????? //創建對象并初始化
??????? SpringMail springMail = new SpringMail();??????????
??? //測試發送只有文本信息的簡單測試
??? springMail.sendTextMail(sender);??????
??? //測試發送帶附件的郵件
??? springMail.sendMimeMessage(sender);???????
??? }??
??? private void sendTextMail(JavaMailSender sender) throws Exception {
??? //聲明spring的簡單郵件消息
??????? SimpleMailMessage mail = new SimpleMailMessage();
??????? mail.setTo(" 237888386@qq.com ");??????
??????? mail.setFrom(" xiaojunwei_1987@126.com ");
??????? mail.setSubject("test by amigo");
??????? mail.setText("spring Mail的簡單測試");
??????? sender.send(mail);??????
??????? System.out.println("成功發送文本文件！");???????
??? }??
??? private void sendMimeMessage(final JavaMailSender sender) throws Exception {
??????? //附件文件集合
??????? final List files = new ArrayList();
?????? //擴展信息介質接口,需自己實現接口中的方法
??????? MimeMessagePreparator mimeMail = new MimeMessagePreparator() {
??????????? public void prepare(MimeMessage mimeMessage) throws MessagingException {
??????????? //設置接收者信息 ,接收方式：直接發送,接收地址??????
?????????????? // mimeMessage.setRecipient(Message.RecipientType.TO,new InternetAddress(""));
??????????????? mimeMessage.setRecipient(Message.RecipientType.TO,new InternetAddress(" 237888386@qq.com "));
??????????????? mimeMessage.setFrom(new InternetAddress(" xiaojunwei_1987@126.com "));
??????????????? mimeMessage.setSubject("Spring發送帶附件的郵件", "gb2312");???????
??????????????? //多部件的,可以看做一個郵件容器,包含正文、附件等
??????????????? Multipart mp = new MimeMultipart();??????????????
??????????????? //向Multipart添加正文
??????????????? MimeBodyPart content = new MimeBodyPart();
??????????????? content.setText("內含spring郵件發送的例子，請查收!");??????????????
??????????????? //向MimeMessage添加（Multipart代表正文）
??????????????? mp.addBodyPart(content);
??????????????? //向Multipart添加附件,可以添加多個附件;
??????????????? String path = System.getProperty("user.dir");
??????????????? System.out.println(path);

?????????? ????? // 這里是附件的路徑，自己測試的時候可能要改的哦！
??????????????? files.add("e://hehe.txt");
??????????????? files.add(path+" \\src\\test\\java\\com\\techcenter\\mail\\SpringMail.java ");???
??????????????? Iterator it = files.iterator();
??????????????? //遍歷List,把附件放到郵件容器里面
??????????????? while(it.hasNext()) {
??????????????????? MimeBodyPart attachFile = new MimeBodyPart();
??????????????????? String filename = it.next().toString();
??????????????????? //文件數據源
??????????????????? FileDataSource fds = new FileDataSource(filename);
??????????????????? //數據處理器
??????????????????? attachFile.setDataHandler(new DataHandler(fds));
??????????????????? //設置文件名?????????????????
??????????????????? attachFile.setFileName(fds.getName());
??????????????????? mp.addBodyPart(attachFile);
??????????????? }??????????????
??????????????? files.clear();??????????????
??????????????? //向Multipart添加MimeMessage
??????????????? mimeMessage.setContent(mp);
??????????????? mimeMessage.setSentDate(new Date());
??????????? }
??????? };
??????? //發送帶附件的郵件
??????? sender.send(mimeMail);??????
??????? System.out.println("成功發送帶附件郵件!");
??? }
}

用spring做一個javaMail功能的例子