做項目用到自動發郵件功能，網上查閱很多沒有給出特别詳細的說明，需要自己去探索，做了很多彎路。
在此給大家分享一下自己的代碼：
360網盤下載下傳位址：
http://yunpan.cn/cJzDQ3gVUHBxY通路密碼 8221
使用時 請将Spring 配置檔案裡的 使用者名、密碼、郵箱伺服器 還有端口 進行修改如果不是 yeah郵箱。
如果使用maven項目：
Pom.xml
添加的内容
<!-- Spring3 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>3.2.4.RELEASE</version>
</dependency>
<artifactId>spring-context</artifactId>
<artifactId>spring-jdbc</artifactId>
<artifactId>spring-web</artifactId>
<artifactId>spring-aop</artifactId>
<!-- Spring Email -->
<groupId>org.springframework</groupId>
<artifactId>spring-context-support</artifactId>
<version>3.2.4.RELEASE</version>
<!-- Javamail API -->
<dependency>
<groupId>javax.mail</groupId>
<artifactId>mail</artifactId>
<version>1.4.4</version>
</dependency>
如果直接導入JAR方式 ，需要引入如下JAR包
ailUtil
package com.bookmarksClouds.util;
import java.io.File;
import javax.annotation.Resource;
import javax.mail.MessagingException;
import javax.mail.internet.MimeMessage;
import org.springframework.core.io.ClassPathResource;
import org.springframework.core.io.FileSystemResource;
import org.springframework.mail.SimpleMailMessage;
import org.springframework.mail.javamail.JavaMailSender;
import org.springframework.mail.javamail.MimeMessageHelper;
import org.springframework.stereotype.Component;
@Component("simpleMail")
public class EmailUtil
{
private JavaMailSender javaMailSender;
private SimpleMailMessage simpleMailMessage;
/**
*
* @方法名: sendMail
* @參數名：@param subject 郵件主題
* @參數名：@param content 郵件主題内容
* @參數名：@param to 收件人Email位址
* @param isHtml 是否是html格式(發送html時使用utf-8編碼)
* @描述語: 發送郵件
* @throws MessagingException 發送發生了異常
*/
public void sendMail(String subject, String content,boolean isHtml, String to) throws MessagingException
{
MimeMessage mimeMessage = javaMailSender.createMimeMessage();
MimeMessageHelper messageHelper =null;
if(isHtml)
{
messageHelper = new MimeMessageHelper(mimeMessage,true,"UTF-8");
}
else
messageHelper = new MimeMessageHelper(mimeMessage,true);
messageHelper.setFrom(simpleMailMessage.getFrom()); //設定發件人Email
messageHelper.setSubject(subject); //設定郵件主題
messageHelper.setText(content,true); //設定郵件主題内容(html格式)
messageHelper.setText(content); //設定郵件主題内容
messageHelper.setTo(to); //設定收件人Email
javaMailSender.send(mimeMessage);
}
/**
* 發送郵件 （包含附件）
* @param subject 主題
* @param content 内容
* @param fileAttachment 附件檔案
* @param isHtml 内容是否是html格式
* @param to 發送的郵箱位址
* @throws MessagingException 發送郵件異常（失敗）
*/
public void sendMail(String subject, String content,boolean isHtml, File fileAttachment,String to) throws MessagingException
MimeMessageHelper messageHelper = new MimeMessageHelper(mimeMessage,true,"UTF-8");
FileSystemResource file = new FileSystemResource(fileAttachment);
messageHelper.addAttachment(file.getFilename(), file); //添加附件
}
/**
* 發送郵件 （包含附件）
* @param subject 主題
* @param content 内容
* @param classPathResource 附件檔案(附加在項目内部時候)
* @param isHtml 内容是否是html格式
* @param to 發送的郵箱位址
* @throws MessagingException
public void sendMail(String subject, String content,boolean isHtml, ClassPathResource classPathResource,String to)
throws MessagingException
{
MimeMessage mimeMessage = javaMailSender.createMimeMessage();
/**
* new MimeMessageHelper(mimeMessage,true)之true個人見解：
* 關于true參數,官方文檔是這樣解釋的：
* use the true flag to indicate you need a multipart message
* 翻譯過來就是：使用true,以表明你需要多個消息
* 再去翻一下MimeMessageHelper的API,找到這樣一句話：
* supporting alternative texts, inline elements and attachments
* 也就是說,如果要支援内聯元素和附件就必須給定第二個參數為true
* 否則抛出 java.lang.IllegalStateException 異常
*/
MimeMessageHelper messageHelper = new MimeMessageHelper(mimeMessage,true,"UTF-8");
messageHelper.setFrom(simpleMailMessage.getFrom()); //設定發件人Email
messageHelper.setSubject(subject); //設定郵件主題
if(isHtml)
{
messageHelper.setText(content,true); //設定郵件主題内容(html格式)
}
else
messageHelper.setText(content); //設定郵件主題内容
messageHelper.setTo(to); //設定收件人Email
/** FileSystemResource file = new FileSystemResource(fileAttachment);
* ClassPathResource：很明顯就是類路徑資源,我這裡的附件是在項目裡的,是以需要用ClassPathResource
* 如果是系統檔案資源就不能用ClassPathResource,而要用FileSystemResource,例：
*
ClassPathResource file = new ClassPathResource("attachment/Readme.txt");
*/
* MimeMessageHelper的addAttachment方法：
* addAttachment(String attachmentFilename, InputStreamSource inputStreamSource)
* InputStreamSource是一個接口,ClassPathResource和FileSystemResource都實作了這個接口
//發送附件郵件
*/
ClassPathResource file = classPathResource;
messageHelper.addAttachment(file.getFilename(), file); //添加附件
javaMailSender.send(mimeMessage);
}
//Spring 依賴注入
@Resource
public void setSimpleMailMessage(SimpleMailMessage simpleMailMessage) {
this.simpleMailMessage = simpleMailMessage;
public void setJavaMailSender(JavaMailSender javaMailSender) {
this.javaMailSender = javaMailSender;
}
Demo
package com.bookmarksClouds.test;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import com.bookmarksClouds.util.EmailUtil;
public class EmailUtilTest
private ApplicationContext factory = new ClassPathXmlApplicationContext(
new String[] {"spring/spring-smtp-mail-attachment.xml"});
@Test
public void test()
{
EmailUtil mail = (EmailUtil)factory.getBean("simpleMail");
String html= "<html><head><META http-equiv=Content-Type content='text/html; charset=UTF-8'><title>雲書簽注冊激活</title></head><body>歡迎使用，雲書簽。<br/><a href='www.baidu.com' >雲書簽</a><br>點選上面超連結 激活賬戶資訊！</body><html>";
try {
mail.sendMail("雲書簽注冊自動發郵件", html,true, "***@qq.com");
} catch (MessagingException e) {
System.out.println("發送郵件失敗！");
//e.printStackTrace();
}
}
Spring配置檔案
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.2.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.2.xsd"><context:annotation-config/>
<context:component-scan base-package="com.bookmarksClouds"/>
<bean id ="mailSender" class ="org.springframework.mail.javamail.JavaMailSenderImpl" >
<!-- 伺服器 -->
<property name ="host" value ="smtp.163.com" />
<!-- 端口号 -->
<property name ="port" value ="25" />
<!-- 使用者名 -->
<property name ="username" value ="郵箱位址" />
<!-- 密碼 -->
<property name ="password" value ="郵箱密碼" />
<!-- SMTP伺服器驗證 -->
<property name ="javaMailProperties" >
<props >
<!-- 驗證身份 -->
<prop key ="mail.smtp.auth" > true </prop >
</props >
</property >
</bean >
<bean id="simpleMailMessage" class="org.springframework.mail.SimpleMailMessage">
<!-- 發件人email -->
<property name="from" value="發送郵箱位址" />
<!--
收件人email
<property name="to" value="[email protected]" />
email主題(标題)
<property name="subject" value="Subject" />
email主題内容
<property name="text">
<value>ContentText</value>
</property>
-->
</bean>
</beans>