SpringBoot整合邮箱

1，开启POP3/SMTP/IMAP服务

注意：每个邮箱的密码唯一，不要随意分享给他人

最后就是这个样子了

2，整合测试

2.1，pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w5.org/2001/XMLSchema-instance"xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd"><modelVersion>4.0.0</modelVersion><parent><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-parent</artifactId><version>2.7.3</version><relativePath/> <!-- lookup parent from repository --></parent><groupId>com.sin</groupId><artifactId>mail_massage</artifactId><version>0.0.1-SNAPSHOT</version><name>mail_massage</name><description>Demo project for Spring Boot</description><properties><java.version>8</java.version></properties><dependencies><!-- 短信业务 --><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-mail</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-actuator</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId></dependency><dependency><groupId>org.projectlombok</groupId><artifactId>lombok</artifactId><optional>true</optional></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-test</artifactId><scope>test</scope></dependency></dependencies><build><plugins><plugin><groupId>org.springframework.boot</groupId><artifactId>spring-boot-maven-plugin</artifactId></plugin><plugin><groupId>org.apache.maven.plugins</groupId><artifactId>maven-surefire-plugin</artifactId><version>2.22.2</version><configuration><skipTests>true</skipTests></configuration></plugin></plugins></build>
</project>

2.2，application.yml

spring:mail:# 配置SMTP服务器地址host: smtp.126.com# 配置端口号465或者25port: 25# 发送者邮箱（根据自己邮箱填写）username: sin8023@126.com#  配置密码，注意是开启POP3/SMTP的授权密码(根据自己的授权密码填写)password: SZBSI****HNYAA*properties:mail:smtp:auth: trueenable: truessl:# 设为true时 端口号设为 465 设为false时 端口号设为25enable: falsesocketFactoryClass: javax.net.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# 邮箱编码格式default-encoding: UTF-8

2.3，MailService.java

package com.sin.service;import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.mail.javamail.JavaMailSender;
import org.springframework.mail.javamail.MimeMessageHelper;
import org.springframework.stereotype.Service;import javax.mail.MessagingException;
import javax.mail.internet.MimeMessage;/*** @CreateName SIN* @CreateDate 2023/06/27 8:50* @description*/
@Service
public class MailService {@Autowired(required = false)private JavaMailSender mailSender;@Value("${spring.mail.username")private String userName;/**** @param to 收件人* @param subject 邮箱标题* @param content 邮箱内容* @throws MessagingException*/public void sendMail(String to, String subject, String content) throws MessagingException {MimeMessage message = mailSender.createMimeMessage();MimeMessageHelper helper = new MimeMessageHelper(message, true);//邮箱发送者helper.setFrom(userName);//收件人，可以为多个收件人，收件人之间用逗号隔开helper.setTo(to);// 邮箱标题helper.setSubject(subject);// 邮箱内容helper.setText(content, true);mailSender.send(message);}
}

2.4，MailController.java

package com.sin.controller;import com.sin.service.MailService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;import javax.mail.MessagingException;/*** @CreateName SIN* @CreateDate 2023/06/27 8:50* @description*/
@RestController
public class MailController {@Autowiredprivate MailService mailService;@GetMapping("/sendMail")public String sendMail() {try {mailService.sendMail("1824368699@qq.com", "测试邮箱", "使用SpringBoot整合邮箱发送消息");return "邮件发送成功";} catch (MessagingException e) {e.printStackTrace();return "邮件发送失败";}}}

2.5，测试

2.6，查看结果

3，发送附件

3.1，MailFileServier.java

package com.sin.service;import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.mail.javamail.JavaMailSender;
import org.springframework.mail.javamail.MimeMessageHelper;
import org.springframework.stereotype.Service;import javax.mail.MessagingException;
import javax.mail.internet.MimeMessage;
import java.io.File;/*** @CreateName SIN* @CreateDate 2023/06/27 10:03* @description*/
@Service
public class MailFileServier {@Autowired(required = false)private JavaMailSender mailSender;@Value("${spring.mail.username}")private String userName;/**** @param to 收件人* @param subject 邮箱标题* @param content 邮箱内容* @throws MessagingException*/public void sendMail(String to, String subject, String content, String imgName, File file) throws MessagingException {MimeMessage message = mailSender.createMimeMessage();MimeMessageHelper helper = new MimeMessageHelper(message, true);//邮箱发送者helper.setFrom(userName);//收件人，可以为多个收件人，收件人之间用逗号隔开helper.setTo(to);// 邮箱标题helper.setSubject(subject);// 邮箱内容helper.setText(content, true);helper.addAttachment(imgName,file);mailSender.send(message);}
}

3.2，MailFileController.java

package com.sin.controller;import com.sin.service.MailFileServier;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;import javax.mail.MessagingException;
import java.io.File;/*** @CreateName SIN* @CreateDate 2023/06/27 10:05* @description*/
@RestController
public class MailFileController {@Autowiredprivate MailFileServier mailFileServier;@GetMapping("/sendFile")public String sendMail() {try {mailFileServier.sendMail("1824368699@qq.com", "测试邮箱", "使用SpringBoot整合邮箱发送消息","sql作业.txt" ,new File("E:\\SQL默写.txt"));return "邮件发送成功";} catch (MessagingException e) {e.printStackTrace();return "邮件发送失败";}}
}

3.3，测试

4，发送图片

4.1，MailImgServier.java

package com.sin.service;import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.core.io.FileSystemResource;
import org.springframework.mail.javamail.JavaMailSender;
import org.springframework.mail.javamail.MimeMessageHelper;
import org.springframework.stereotype.Service;import javax.mail.MessagingException;
import javax.mail.internet.MimeMessage;
import java.io.File;/*** @CreateName SIN* @CreateDate 2023/06/27 10:21* @description*/
@Service
public class MailImgService {@Autowired(required = false)private JavaMailSender mailSender;@Value("${spring.mail.username}")private String userName;/**** @param to 收件人* @param subject 邮箱标题* @param content 邮箱内容* @throws MessagingException*/public void sendMail(String to, String subject, String content, String imgName, FileSystemResource file) throws MessagingException {MimeMessage message = mailSender.createMimeMessage();MimeMessageHelper helper = new MimeMessageHelper(message, true);//邮箱发送者helper.setFrom(userName);//收件人，可以为多个收件人，收件人之间用逗号隔开helper.setTo(to);// 邮箱标题helper.setSubject(subject);// 邮箱内容helper.setText(content, true);helper.addInline(imgName,file);mailSender.send(message);}
}

4.2，MailImgController.java

package com.sin.controller;import com.sin.service.MailFileServier;
import com.sin.service.MailImgService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.core.io.FileSystemResource;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;import javax.mail.MessagingException;
import java.io.File;/*** @CreateName SIN* @CreateDate 2023/06/27 10:21* @description*/
@RestController
public class MailImgController {@Autowiredprivate MailImgService mailImgServier;@GetMapping("/sendImg")public String sendMail() {try {mailImgServier.sendMail("1824368699@qq.com", "测试邮箱","<h1>使用SpringBoot发送图片到邮箱</h1><p>图片：</p><img src='cid:img1'/>","img1" ,new FileSystemResource(new File("F:\\Users\\sin\\Pictures\\2.jpg")));return "邮件发送成功";} catch (MessagingException e) {e.printStackTrace();return "邮件发送失败";}}
}

4.3，测试

5，随机验证码

5.1，导入thymeleaf模板

<dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>
<!-- Java提供的工具库 -->
<dependency><groupId>org.apache.commons</groupId><artifactId>commons-lang3</artifactId><version>5.9</version>
</dependency>

5.2，application.yml

## thymeleaf模板设置
spring:thymeleaf:prefix: classpath:/templates/suffix: .htmlmode: HTMLencoding: utf-8servlet.content-type: text/htmlcheck-template-location: true  #检查模板路径是否存在cache: false

5.3，RandomCodeUtil.java

package com.sin.util;import org.apache.commons.lang5.RandomStringUtils;/*** @CreateName SIN* @CreateDate 2023/06/27 9:26* @description 生成随机验证码* 使用了Apache Commons Lang库中的RandomStringUtils类来生成随机数字字符串。*/
public class RandomCodeUtil {public static String generateCode(int length){return RandomStringUtils.randomNumeric(length);}
}

5.4，EmailCodeService.java

package com.sin.service;import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.mail.SimpleMailMessage;
import org.springframework.mail.javamail.JavaMailSender;
import org.springframework.stereotype.Service;/*** @CreateName SIN* @CreateDate 2023/06/27 9:29* @description*/
@Service
public class EmailCodeService {@Autowired(required = false)private JavaMailSender mailSender;@Value("${spring.mail.username}")private String userName;public void sendSimpleMessage(String to, String subject, String text) {SimpleMailMessage message = new SimpleMailMessage();//邮箱发送者message.setFrom(userName);//收件人，可以为多个收件人，收件人之间用逗号隔开message.setTo(to);// 邮箱标题message.setSubject(subject);// 邮箱内容message.setText(text);mailSender.send(message);}
}

5.5，EmailCodeController.java

package com.sin.controller;import com.sin.service.EmailCodeService;
import com.sin.util.RandomCodeUtil;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;/*** @CreateName SIN* @CreateDate 2023/06/27 9:30* @description*/
@Controller
public class EmailCodeController {@Autowiredprivate EmailCodeService emailCodeService;@GetMapping("/login")public String home(Model model) {// 生成6位随意验证码String code = RandomCodeUtil.generateCode(6);emailCodeService.sendSimpleMessage("1824368699@qq.com", "验证码", code);model.addAttribute("code", code);return "login.html";}}

5.6，测试

6，随机验证码登录

未完继续！！！！