springboot整合mail实现邮箱的发送

第一步添加mail的依赖

<!--引入mail的依赖  -->
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-mail</artifactId>
		</dependency>

第二步编写邮箱的

yml配置文件

spring:
  #邮箱配置
  mail:
    host: smtp.qq.com
    username: [email protected]
    #QQ邮箱的授权码
    password: 授权码
    default-encoding: UTF-8
    properties:
      mail:
        smtp:
          auth: true
          starttls:
            enable: true
            required: true

properties的配置文件

#qq邮箱配置
# JavaMailSender 邮件发送的配置
spring.mail.host=smtp.qq.com
spring.mail.username=用户qq邮箱
#QQ邮箱的授权码
spring.mail.password=授权码
spring.mail.properties.mail.smtp.auth=true
spring.mail.properties.mail.smtp.starttls.enable=true
spring.mail.properties.mail.smtp.starttls.required=true
spring.mail.default-encoding=UTF-8

#163邮箱配置
spring.mail.host=smtp.163.com
spring.mail.username=用户163邮箱
spring.mail.password=邮箱密码
spring.mail.properties.mail.smtp.auth=true
spring.mail.properties.mail.smtp.starttls.enable=true
spring.mail.properties.mail.smtp.starttls.required=true
spring.mail.default-encoding=UTF-8

编写两个发送邮件的接口

package www.it.com.server;

import java.io.File;

/**
* @author wangjie:
* @version 创建时间：2019年8月27日 上午10:13:08
* @Description 类描述:
*/
public interface MailServer {
	/**
	 * @param sendUser 邮件接收人
	 * @param title 邮件的标题
	 * @param text  邮件的内容
	 */
	void sendMailServer(String sendUser,String title,String text);

	/**
	 * 带有附件邮箱的发送
	 * @param sendUser
	 * @param title
	 * @param text
	 * @param file
	 */
	void sendFileMail(String sendUser,String title,String text,File file);
}

接口的实现

package www.it.com.server.impl;

import java.io.File;

import javax.mail.MessagingException;
import javax.mail.internet.MimeMessage;

import org.apache.logging.log4j.message.SimpleMessage;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
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.Service;

import www.it.com.server.MailServer;

/**
* @author wangjie:
* @version 创建时间：2019年8月27日 上午10:13:58
* @Description 类描述:
*/
@Service
public class MailServerImpl implements MailServer {

	@Value("${spring.mail.username}")
	private String fromUser;

	@Autowired
    private JavaMailSender javaMailSender;

	public String getFromUser() {
		return fromUser;
	}

	public void setFromUser(String fromUser) {
		this.fromUser = fromUser;
	}

	@Override
	public void sendMailServer(String sendUser, String title, String text) {
		//创建邮件的实体 用于封装发送邮件需要的信息
		SimpleMailMessage simpleMailMessage=new  SimpleMailMessage();
		//邮件的发送人
		simpleMailMessage.setFrom(fromUser);
		//邮件接收人
		simpleMailMessage.setTo(sendUser);
		//邮件的标题
		simpleMailMessage.setSubject(title);
		//邮件的内容
		simpleMailMessage.setText(text);
		//发送邮件
	    javaMailSender.send(simpleMailMessage);
	}

	@Override
	public void sendFileMail(String sendUser, String title, String text, File file) {

		MimeMessage mimeMessage = null;

		try {
			mimeMessage =javaMailSender.createMimeMessage();
			//创建mimeMessageHelper对象用于处理带有附件的邮件信息
			MimeMessageHelper mimeMessageHelper=new MimeMessageHelper(mimeMessage,true);
			mimeMessageHelper.setFrom(fromUser);
			mimeMessageHelper.setTo(sendUser);
			mimeMessageHelper.setSubject(title);
			mimeMessageHelper.setText(text);
			FileSystemResource r = new FileSystemResource(file);
			//添加附件
			mimeMessageHelper.addAttachment("附件", r);
			javaMailSender.send(mimeMessage);
		} catch (MessagingException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}

}

controller编码

package www.it.com.controller;

import java.io.File;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import www.it.com.server.MailServer;

/**
 * @author wangjie:
 * @version 创建时间：2019年8月27日 上午9:52:30
 * @Description 类描述:邮件发送的controller
 */

@RestController()
@RequestMapping("/mail")
public class MailController {

	@Autowired
	private MailServer mailServer;

	/**
	 * 简单邮件的发送
	 * @return
	 */
	@RequestMapping("/send")
	public String sendMail() {
		//2694433816
		mailServer.sendMailServer("[email protected]", "你好", "明天去你家玩");
		return "success";
	}

	/**
	 * 发送带有附件的邮件
	 */
	@RequestMapping("/sendFile")
	public String sendFileMail() {
		File file=new File("C://Users//DELL//Desktop//学习资料.txt");
		mailServer.sendFileMail("[email protected]", "你好dsf", "这是第二封带有附件的邮件", file);
		return "success";
	}
}

授权码生成的步骤

登录邮箱选择设置

选择账户

滑动到下面开启相应的服务 选择生成授权码

原文地址：https://www.cnblogs.com/wang66a/p/12069301.html