spring邮件pop 代码实现发送邮件机制

实体类vo：

package com.cxqy.activity.dto;

import lombok.Data;
import org.codehaus.jackson.annotate.JsonIgnore;
import org.codehaus.jackson.annotate.JsonIgnoreProperties;
import org.springframework.web.multipart.MultipartFile;

import javax.validation.constraints.NotBlank;
import java.util.Date;


/**
 * @Author yjl
 * @Date 2022/1/21 14:33
 * @Version 1.0
 */

@Data
@JsonIgnoreProperties(value = { "multipartFiles"})
public class MailVo {

    private String id;


    private String from;


    @NotBlank(message = "收件人不能为空")
    private String to;

    @NotBlank(message = "邮件主题不能为空")
    private String subject;

    @NotBlank(message = "邮件内容不能为空")
    private String text;


    private Date sentDate;


    private String cc;


    private String bcc;


    private String status;


    private String error;



    private MultipartFile[] multipartFiles;
}

-----------------------------
package com.cxqy.activity.controller;

import com.cxqy.activity.dto.MailVo;
import com.cxqy.activity.service.MailService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;
import org.springframework.web.servlet.ModelAndView;

import javax.validation.Valid;

/**
 * @Author yjl
 * @Date 2022/1/21 14:47
 * @Version 1.0
 */

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

    @Autowired
    private MailService mailService;




    @GetMapping("/")
    public ModelAndView index() {
        ModelAndView mv = new ModelAndView("mail/sendMail");
        mv.addObject("from", mailService.getMailSendFrom());
        return mv;

    }

    @PostMapping("/send")
    public MailVo sendMail(@Valid MailVo mailVo, MultipartFile[] files) {
        mailVo.setMultipartFiles(files);
        return mailService.sendMail(mailVo);

    }
}

--------------------

package com.cxqy.activity.service;

import com.cxqy.activity.dto.MailVo;
import org.apache.commons.lang.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.mail.javamail.JavaMailSenderImpl;
import org.springframework.mail.javamail.MimeMessageHelper;
import org.springframework.stereotype.Service;
import org.springframework.web.multipart.MultipartFile;

import java.util.Date;


/**
 * @Author yjl
 * @Date 2022/1/21 14:37
 * @Version 1.0
 */


public interface MailService {

     MailVo sendMail(MailVo mailVo);

     String getMailSendFrom();
}

-----------------------

package com.cxqy.activity.service.impl;
import com.cxqy.activity.dto.MailVo;
import com.cxqy.activity.service.MailService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.mail.javamail.JavaMailSenderImpl;
import org.springframework.mail.javamail.MimeMessageHelper;
import org.springframework.stereotype.Service;
import org.springframework.web.multipart.MultipartFile;

import java.util.Date;

/**
 * @Author yjl
 * @Date 2022/1/21 15:11
 * @Version 1.0
 */

@Slf4j
@Service
public class MailServiceImpl implements MailService {

    private Logger logger = LoggerFactory.getLogger(getClass());


    @Autowired
    private JavaMailSenderImpl mailSender;


    @Override
    public MailVo sendMail(MailVo mailVo) {
        try {
            sendMimeMail(mailVo);

            return saveMail(mailVo);

        } catch (Exception e) {

            logger.error("发送邮件失败:", e);

            mailVo.setStatus("fail");

            mailVo.setError(e.getMessage());

            return mailVo;
        }

    }

    @Override
    public String getMailSendFrom() {

        return mailSender.getJavaMailProperties().getProperty("from");
    }


    private void sendMimeMail(MailVo mailVo) {
        try {
            MimeMessageHelper messageHelper = new MimeMessageHelper(mailSender.createMimeMessage(), true);

            mailVo.setFrom(getMailSendFrom());

            messageHelper.setFrom(mailVo.getFrom());

            messageHelper.setTo(mailVo.getTo().split(","));

            messageHelper.setSubject(mailVo.getSubject());

            messageHelper.setText(mailVo.getText());

            if (!StringUtils.isEmpty(mailVo.getCc())) {

                messageHelper.setCc(mailVo.getCc().split(","));

            }
            if (!StringUtils.isEmpty(mailVo.getBcc())) {

                messageHelper.setCc(mailVo.getBcc().split(","));

            }
            if (mailVo.getMultipartFiles() != null) {
                for (MultipartFile multipartFile : mailVo.getMultipartFiles()) {
                    messageHelper.addAttachment(multipartFile.getOriginalFilename(), multipartFile);
                }

            }

            if (mailVo.getSentDate() ==null) {

                mailVo.setSentDate(new Date());

                messageHelper.setSentDate(mailVo.getSentDate());

            }

            mailSender.send(messageHelper.getMimeMessage());

            mailVo.setStatus("ok");

            logger.info("发送邮件成功：{}->{}", mailVo.getFrom(), mailVo.getTo());

        } catch (Exception e) {

            throw new RuntimeException(e);

        }

    }

    private MailVo saveMail(MailVo mailVo) {

        return null;

    }
}



--------------yml配置

spring:
  application:
    name: @project.artifactId@
  profiles:
    active: local
  flyway:
    baseline-on-migrate: true
  servlet:
    multipart:
      max-file-size: 200MB
      max-request-size: 300MB
  jackson:
    date-format: yyyy-MM-dd HH:mm:ss
    time-zone: UTC
server:
  port: 8610

spring.mail:
    host: smtp.163.com #SMTP服务器地址
    username: xxxxx #登陆账号
    password: xxxxx #登陆密码（或授权码）
    default-encoding: utf-8
    properties:
      from: xxx@163.com #邮件发信人（即真实邮箱）
thymeleaf:
  cache: false
  prefix: classpath:/views/
  servlet:
    multipart:
    max-file-size: 10MB #限制单个文件大小
    max-request-size: 50MB #限制请求总量


pagehelper:
  helper-dialect: mysql
  reasonable: false
  support-methods-arguments: true
  params: count=countSql

------------------------------------------------------pom依赖

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-mail</artifactId>
</dependency>
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>