springboot是集大成者，对于发送邮件的功能也不例外。而且往往是原来的功能实现更简单，方便。更符合Facade Pattern。
下面就是springboot发送邮件的实现例子，代码已封装好，按照提示的步骤配置好就可以直接用了。当然如果你是新搭的项目，需要引入springboot的mail包
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-mail</artifactId>
</dependency>
引入后它会自动下载javax.mail包
上代码：
package com.yy.common.utils;
import org.springframework.core.io.FileSystemResource;
import org.springframework.mail.javamail.JavaMailSenderImpl;
import org.springframework.mail.javamail.MimeMessageHelper;
import javax.mail.MessagingException;
import javax.mail.internet.MimeMessage;
import java.io.File;
import java.util.Properties;
/**
*
* @description: 发送邮箱：可以发送文本,可以附加html、图片、附件，支持同时发送多个邮箱
* 使用：
* 第一步：在的项目的配置文件(application.properties)中加入邮件配置
* spring.mail.host=smtp.163.com
* spring.mail.username=***@163.com
* spring.mail.password=***
* spring.mail.port=465
* spring.mail.default-encoding=UTF-8
* spring.mail.protocol=smtp
* spring.mail.properties.mail.debug=true
* spring.mail.properties.mail.smtp.socketFactory.class=javax.net.ssl.SSLSocketFactory
* spring.mail.properties.mail.smtp.auth=true
* spring.mail.properties.mail.smtp.timeout=25000
* 第二步：
* 在你调用此工具的类中，加入如下：此处利用springboot的feature
* @Resource
* private JavaMailSenderImpl mailSender;
*
* @company：yy
* @author: skyler
* @time: 2016年8月27日 下午6:05:13
*/
public class SendMailUtils {
public static final String DEFALUT_ENCODING = "UTF-8";
public static void main(String[] args) throws Exception {
JavaMailSenderImpl sender = initJavaMailSender();
String[] ss = { "[email protected]", "[email protected]" };
sendTextWithHtml(sender, ss, "测试简单文本邮件发送！ ", " <a href='http://work.dev.gomeplus.com/'>test</a>测试我的简单邮件发送机制！！ ");
//sendTextWithImg(sender, ss, "测试邮件中嵌套图片!！", "<html><head></head><body><h1>hello 欢迎你!!spring image html mail</h1><img src='cid:image'/></body> , "image", "d:/compare2.png");
//sendWithAttament(sender,"[email protected]","测试邮件中上传附件!！","<html><head></head><body><h1>你好：附件中有学习资料！</h1></body></html>","c.png","d:/compare2.png");
//sendWithAll(sender, "[email protected]", "测试邮件中嵌套图片!！", "<html><head></head><body><h1>hello 欢迎你!!spring image html ma ", "image", "d:/compare2.png","工作日志.docx","d:/工作日志.docx");
}
public static void sendTextWithHtml(JavaMailSenderImpl sender, String[] tos, String subject, String text)
throws Exception {
MimeMessage mailMessage = sender.createMimeMessage();
initMimeMessageHelper(mailMessage, tos, sender.getUsername(), subject, text);
// 发送邮件
sender.send(mailMessage);
System.out.println("邮件发送成功..");
}
public static void sendTextWithImg(JavaMailSenderImpl sender, String[] tos, String subject, String text,
String imgId, String imgPath) throws MessagingException {
MimeMessage mailMessage = sender.createMimeMessage();
MimeMessageHelper messageHelper = initMimeMessageHelper(mailMessage, tos, sender.getUsername(), subject, text,
true, true, "GBK");
// 发送图片
FileSystemResource img = new FileSystemResource(new File(imgPath));
messageHelper.addInline(imgId, img);
// 发送邮件
sender.send(mailMessage);
System.out.println("邮件发送成功..");
}
public static void sendWithAttament(JavaMailSenderImpl sender, String[] tos, String subject, String text,
String AttachName, String filePath) throws MessagingException {
MimeMessage mailMessage = sender.createMimeMessage();
MimeMessageHelper messageHelper = initMimeMessageHelper(mailMessage, tos, sender.getUsername(), subject, text,
true, true, DEFALUT_ENCODING);
FileSystemResource file = new FileSystemResource(new File(filePath));
// 发送邮件
messageHelper.addAttachment(AttachName, file);
sender.send(mailMessage);
System.out.println("邮件发送成功..");
}
public static void sendWithAll(JavaMailSenderImpl sender, String[] tos, String from, String subject, String text,
String imgId, String imgPath, String AttachName, String filePath) throws MessagingException {
MimeMessage mailMessage = sender.createMimeMessage();
MimeMessageHelper messageHelper = initMimeMessageHelper(mailMessage, tos, sender.getUsername(), subject, text,
true, true, DEFALUT_ENCODING);
// 插入图片
FileSystemResource img = new FileSystemResource(new File(imgPath));
messageHelper.addInline(imgId, img);
// 插入附件
FileSystemResource file = new FileSystemResource(new File(filePath));
messageHelper.addAttachment(AttachName, file);
// 发送邮件
sender.send(mailMessage);
System.out.println("邮件发送成功..");
}
private static MimeMessageHelper initMimeMessageHelper(MimeMessage mailMessage, String[] tos, String from,
String subject, String text) throws MessagingException {
return initMimeMessageHelper(mailMessage, tos, from, subject, text, true, false, DEFALUT_ENCODING);
}
private static MimeMessageHelper initMimeMessageHelper(MimeMessage mailMessage, String[] tos, String from,
String subject, String text, boolean isHTML, boolean multipart, String encoding) throws MessagingException {
MimeMessageHelper messageHelper = new MimeMessageHelper(mailMessage, multipart, encoding);
messageHelper.setTo(tos);
messageHelper.setFrom(from);
messageHelper.setSubject(subject);
// true 表示启动HTML格式的邮件
messageHelper.setText(text, isHTML);
return messageHelper;
}
/**
* 这个方法在实际应用中，springboot会通过在配置文件application.xml
* 中加配置自动实例化JavaMailSenderImpl，本方法只是为了测试使用
*/
public static JavaMailSenderImpl initJavaMailSender() {
Properties properties = new Properties();
properties.setProperty("mail.debug", "true");// 是否显示调试信息(可选)
properties.setProperty("mail.smtp.starttls.enable", "false");
properties.setProperty("mail.smtp.socketFactory.class",
"javax.net.ssl.SSLSocketFactory");
properties.setProperty("mail.smtp.auth", "true");
properties.put(" mail.smtp.timeout ", " 25000 ");
JavaMailSenderImpl javaMailSender = new JavaMailSenderImpl();
javaMailSender.setJavaMailProperties(properties);
javaMailSender.setHost("smtp.163.com");
javaMailSender.setUsername("你邮箱的用户名"); // s根据自己的情况,设置username
javaMailSender.setPassword("你邮箱的密码"); // 根据自己的情况, 设置password
javaMailSender.setPort(465);
javaMailSender.setDefaultEncoding("UTF-8");
return javaMailSender;
}
}