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.compassword: 123456host: 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 {@Resourceprivate JavaMailSender javaMailSender;@Overridepublic 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 {@Resourceprivate 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";@Overridepublic 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 {@Autowiredprivate SendMailService sendMailService;@Testvoid 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 {@Resourceprivate 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";@Overridepublic 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

我们要加入重载参数 true

那我们如何发送附件呢

用File类就行

这就是发送邮件和发送附件

但是这样还不够

我们还是要打开一个开关

就能成功接收

发送附件的核心

在于包装一下应用类

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