Springboot拓展之整合邮件 JavaMail的使用与实操

邮件

电子邮件仍然是我们企业间交往的一种非常常见的方式

发送简单邮件

第一步首先导入坐标

   <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-mail</artifactId>
            <version>2.6.13</version>
        </dependency>

这个依赖使我们去springboot的

版本适配依赖库里去找的

这里面写了规范

很多依赖的坐标

可以直接导入而不会出现版本冲突的问题

第二步做配置

我们要去邮箱客户端进行配置

在yml文件里配置了用户名密码还有供应商

还有传输协议

spring:
  mail:
    username: 1732446549@qq.com
    password: 123456
    host: smtp.qq.com

接下来我们要进行具体操作

我们首先做一个核心业务层接口

package com.bigdata1421.mail.service;

import org.springframework.stereotype.Service;

@Service
public interface SendMailService {

    void sendMail();

}

接下来写业务层接口的实现类

我们这个时候要注入一个JavaMailSender对象

通过JavaMailSender对象发送邮件

package com.bigdata1421.mail.service.impl;

import com.bigdata1421.mail.service.SendMailService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.mail.SimpleMailMessage;
import org.springframework.mail.javamail.JavaMailSender;

import javax.annotation.Resource;

public class sendMailServiceImpl implements SendMailService {

    @Resource
    private JavaMailSender javaMailSender;

    @Override
    public void sendMail() {
        SimpleMailMessage message=new SimpleMailMessage();
        javaMailSender.send(message);
    }

}

我们查看一下页面模型

我们程序中要有四个信息

然后设置

即可

package com.bigdata1421.mail.service.impl;

import com.bigdata1421.mail.service.SendMailService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.mail.SimpleMailMessage;
import org.springframework.mail.javamail.JavaMailSender;

import javax.annotation.Resource;

public class sendMailServiceImpl implements SendMailService {

    @Resource
    private JavaMailSender javaMailSender;

    //发送人
    private String from="123@qq.com";
    //接收人
    private String to="456@qq.com";
    //标题
    private String subject="测试文件";
    //正文
    private String context="正文内容";

    @Override
    public void sendMail() {
        SimpleMailMessage message=new SimpleMailMessage();

        message.setFrom(from);
        message.setTo(to);
        message.setSubject(subject);
        message.setText(context);
        
        javaMailSender.send(message);
    }

}

我们进行一个测试

在测试中注入业务层接口

调用接口方法 sendMail

package com.bigdata1421.mail;

import com.bigdata1421.mail.service.SendMailService;
import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;

@SpringBootTest
class MailApplicationTests {

    @Autowired
    private SendMailService sendMailService;

    @Test
    void contextLoads() {
        sendMailService.sendMail();
    }

}

发送多封邮件

大概是这样

package com.bigdata1421.mail.service.impl;

import com.bigdata1421.mail.service.SendMailService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.mail.MailException;
import org.springframework.mail.SimpleMailMessage;
import org.springframework.mail.javamail.JavaMailSender;
import org.springframework.mail.javamail.*;
import org.springframework.mail.javamail.MimeMessageHelper;
import javax.annotation.Resource;

public class sendMailServiceImpl implements SendMailService {

    @Resource
    private JavaMailSender javaMailSender;

    //发送人
    private String from="123@qq.com";
    //接收人
    private String to="456@qq.com";
    //标题
    private String subject="测试文件";
    //正文
    private String context="正文内容";

    @Override
    public void sendMail() {

        try {
            MimeMessage message = javaMailSender.createMimeMessage();
            MimeMessageHelper helper=new MimeMessageHelper(message);
            helper.setFrom(from);
            helper.setTo(to);
            helper.setSubject(subject);
            helper.setText(context);

            javaMailSender.send(message);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

}

如果我们对正文内容进行格式解析html