1、获取授权码
登录qq邮箱，点击【设置】——》》【账户】
下滑至下图所示位置，点击开启，按要求发送短信验证码
！！！
记录图中的授权码，下面一步会用到
2、配置yml文件
spring:mail:# 配置 SMTP 服务器地址host: # 发送者邮箱username: xxxxxxxxx@# 配置密码，注意不是真正的密码，而是刚刚申请到的授权码password: **********# 端口号465或587port: 587# 默认的邮件编码为UTF-8default-encoding: UTF-8# 配置SSL 加密工厂properties:mail:smtp:socketFactoryClass: .ssl.SSLSocketFactory#表示开启 DEBUG 模式，这样，邮件发送过程的日志会在控制台打印出来，方便排查错误debug: true
3、添加并刷新maven依赖
<!--qq邮箱--><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-mail</artifactId></dependency>
4、编写controller层
import org.springframework.beans.factory.annotation.Value;import org.springframework.mail.MailException;import org.springframework.mail.SimpleMailMessage;import org.springframework.mail.javamail.JavaMailSender;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RequestParam;import org.springframework.web.bind.annotation.RestController;import javax.annotation.Resource;import java.util.Random;@RestController@RequestMapping("email")public class EmailController {@Resourceprivate JavaMailSender javaMailSender;//读取yml文件中username的值并赋值给form@Value("${spring.mail.username}")private String from;@RequestMapping("sendEmail")public String sendSimpleMail(@RequestParam(value = "emailReceiver") String emailReceiver) {// 构建一个邮件对象SimpleMailMessage message = new SimpleMailMessage();// 设置邮件发送者message.setFrom(from);// 设置邮件接收者message.setTo(emailReceiver);// 设置邮件的主题message.setSubject("登录验证码");// 设置邮件的正文Random random = new Random();StringBuilder code = new StringBuilder();for (int i = 0; i < 6; i++) {int r = random.nextInt(10);code.append(r);}String text = "您的验证码为：" + code + ",请勿泄露给他人。";message.setText(text);// 发送邮件try {javaMailSender.send(message);return "发送成功";} catch (MailException e) {e.printStackTrace();}return "发送失败";}}
测试效果如下
