springboot利用redis发送邮箱验证码进行用户密码重置

在本文中，我将为你演示如何使用Spring Boot和Redis来发送包含验证码的邮件，以便实现用户密码重置功能。我们将以markdown格式书写。

1. 添加依赖

在pom.xml文件中添加以下依赖：

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

2. 配置Redis和邮件发送

在application.yml文件中配置Redis和邮件发送相关参数：

spring: 
  redis:
    host: localhost
    port: 6379
  mail:
    host: smtp.xxx.com
    username: your-email@example.com
    password: your-email-password
    properties:
      mail:
        smtp:
          auth: true
          starttls:
            enable: true
            required: true

3. 创建EmailService类

在这个类中，我们将实现发送邮件和生成验证码的相关功能。

import org.springframework.mail.SimpleMailMessage;
import org.springframework.mail.javamail.JavaMailSender;
import org.springframework.stereotype.Service;

@Service
public class EmailService {

  private final JavaMailSender mailSender;

  public EmailService(JavaMailSender mailSender) {
    this.mailSender = mailSender;
  }

  public void sendSimpleEmail(String to, String subject, String content) {
    SimpleMailMessage message = new SimpleMailMessage();
    message.setTo(to);
    message.setSubject(subject);
    message.setText(content);
    mailSender.send(message);
  }

  public String generateVerificationCode() {
    int code = (int) (Math.random() * 9000) + 1000;
    return String.valueOf(code);
  }
}

4. 创建UserService类

在这个类中，我们将使用EmailService和RedisTemplate来实现重置密码的功能。

import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.core.ValueOperations;
import org.springframework.stereotype.Service;

import java.util.concurrent.TimeUnit;

@Service
public class UserService {

  private static final String RESET_PASSWORD_CODE_PREFIX = "reset_password:code:";

  private final EmailService emailService;
  private final RedisTemplate<String, String> redisTemplate;

  public UserService(EmailService emailService, RedisTemplate<String, String> redisTemplate) {
    this.emailService = emailService;
    this.redisTemplate = redisTemplate;
  }

  public void sendResetPasswordEmail(String emailAddress) {
    // 1. 生成验证码
    String verificationCode = emailService.generateVerificationCode();

    // 2. 将验证码存储到 Redis
    ValueOperations<String, String> ops = redisTemplate.opsForValue();
    ops.set(RESET_PASSWORD_CODE_PREFIX + emailAddress, verificationCode, 10, TimeUnit.MINUTES);

    // 3. 发送邮件
    String emailSubject = "重置密码";
    String emailContent = "您的验证码为: " + verificationCode;
    emailService.sendSimpleEmail(emailAddress, emailSubject, emailContent);
  }

  public boolean validateVerificationCode(String emailAddress, String inputCode) {
    ValueOperations<String, String> ops = redisTemplate.opsForValue();
    String storedCode = ops.get(RESET_PASSWORD_CODE_PREFIX + emailAddress);
    return inputCode.equals(storedCode);
  }

  public void resetPassword(String emailAddress, String newPassword) {
    // 在这里实现重置密码的逻辑
  }
}

5. 在应用中使用UserService

您可以在Controller或任何其他需要发送邮件和验证验证码的地方，使用UserService类的方法。例如：

@RestController
public class UserController {

  private final UserService userService;

  public UserController(UserService userService) {
    this.userService = userService;
}

@PostMapping("/sendResetPasswordEmail")
public ResponseEntity sendResetPasswordEmail(@RequestParam String emailAddress) {
userService.sendResetPasswordEmail(emailAddress);
return new ResponseEntity<>(HttpStatus.OK);
}

@PostMapping("/resetPassword")
public ResponseEntity resetPassword(@RequestParam String emailAddress, @RequestParam String verificationCode, @RequestParam String newPassword) {
if (userService.validateVerificationCode(emailAddress, verificationCode)) {
userService.resetPassword(emailAddress, newPassword);
  return new ResponseEntity<>(HttpStatus.OK);
} else {
  return new ResponseEntity<>(HttpStatus.BAD_REQUEST);
}
}
}

现在你已经实现了如何使用Spring Boot和Redis发送包含验证码的邮件以便实现用户密码重置功能。在这里，我们首先生成了一个验证码并将其存储到Redis中，然后通过邮件将验证码发送给用户。当用户提交新的密码与验证码时，我们首先验证验证码是否正确，如果正确，则执行重置密码操作。