SpringBoot使用邮箱发送验证码实现注册功能

<dependency>
  <groupId>org.apache.commons</groupId>
  <artifactId>commons-email</artifactId>
  <version>1.5</version>
</dependency>

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

##Email配置
email:
 host-name: smtp.163.com #服务地址，可以直接在web端登录，找到smtp服务看到，163邮箱默认开放25端口，可暂时不设置
 authentication:
  username: xxx.163.com
  password: xxx #手动的设置令牌
 form:
  mail: xxx@163.com #发送方，必须为你设置的username一致
  name: elog #发送方显示的名称，可以随意设置
 charset: UTF-8 #编码格式，一般设置为UTF-8

package com.hisw.rest.utils;

import com.hisw.common.exception.RRException;
import org.apache.commons.mail.HtmlEmail;
/**
 * @ClassName EmailCodeUtils
 * @Description TODO 邮箱验证码工具类
 * @Author liwenju
 * @Date 2019/5/15 14:20
 * @Version 1.0
 **/
public class EmailCodeUtils {

  /**
   * 生成6位随机验证码
   * @return
   */
  public static String getNumber(){
    String str = "1234567890ABCDEFGHIJKLMNOPQRSTUVWXYZ";
    String code = "";
    for(int i= 0;i<6;i++){
      int index = (int)(Math.random()*str.length());
      code+=str.charAt(index);
    }
    return code;
  }

  /**
   * 发送邮箱验证码
   * @param receiverEmail
   * @param subject
   * @param msg
   */
  public static void sendEmailCode(String EMAIL_HOST_NAME,String EMAIL_FORM_MAIL,
               String EMAIL_FORM_NAME,String EMAIL_AUTHENTICATION_USERNAME,
               String EMAIL_AUTHENTICATION_PASSWORD,String receiverEmail,
               String subject,String msg){
    try{
      HtmlEmail email = new HtmlEmail();
      email.setHostName(EMAIL_HOST_NAME);
      email.setCharset("utf-8");
      email.setFrom(EMAIL_FORM_MAIL,EMAIL_FORM_NAME);
      email.setAuthentication(EMAIL_AUTHENTICATION_USERNAME,EMAIL_AUTHENTICATION_PASSWORD);
      email.addTo(receiverEmail);
      email.setSubject(subject);
      email.setMsg(msg);
      email.send();
    }catch (Exception ex){
      throw new Exception("发送验证码失败，原因："+ex.getMessage());
    }
  }

}

/**
 * 获取邮箱配置
 */
@Value(value = "${email.host-name}")
public String EMAIL_HOST_NAME;

/**
 * 获取邮箱配置
 */
@Value(value = "${email.host-name}")
public String EMAIL_HOST_NAME;

@Value(value = "${email.authentication.username}")
public String EMAIL_AUTHENTICATION_USERNAME;

@Value(value = "${email.authentication.password}")
public String EMAIL_AUTHENTICATION_PASSWORD;

@Value(value = "${email.charset}")
public String EMAIL_CHARSET;

@Value(value = "${email.form.mail}")
public String EMAIL_FORM_MAIL;

@Value(value = "${email.form.name}")
public String EMAIL_FORM_NAME;

@Autowired
private SysUserDao sysUserDao;

@Autowired
private SysUserTokenDao sysUserTokenDao;

@Autowired
private RedisUtils redisUtils;

private Logger logger = LoggerFactory.getLogger(LoginUserServiceImpl.class);
/**
 * 验证码过期时间60s
 */
private Integer redisExpire = 60 * 1000;

/***
 * 根据邮箱验证用户
 * @param account
 * @return
 */
public SysUserEntity queryByEmail(String account){
  SysUserEntity sysUserEntity = new SysUserEntity();
  sysUserEntity.setEmail(account);
  return sysUserDao.selectOne(sysUserEntity);
}

/**
 * 判断该邮箱是否已存在
 * @param email
 * @return
 */
public Boolean checkEmail(String email){
  //首先判断该用户是否已存在
  if (StringUtils.isNotEmpty(email)){
    EntityWrapper<SysUserEntity> userEntityWrapper = new EntityWrapper<>();
    userEntityWrapper.eq("email",email);
    List<SysUserEntity> sysUserList = sysUserDao.selectList(userEntityWrapper);
    //如果已存在该用户
    return sysUserList.size() <= 0;
  }
  return true;
}

/**
 *发送邮箱验证码
 *
 */
public R sendRegisterEmailCode(String email) {
  try {
    //验证邮箱规则
    if (!RegexUtils.checkEmail(email)){
      throw new RRException("The mailbox does not conform to the specification!");
    }
    if (!checkEmail(email)){
      throw new RRException("This mailbox already exists. Please change the user's email and try again!");
    }
    String emailCode = EmailCodeUtils.getNumber();
    //发送验证码
    EmailCodeUtils.sendEmailCode(EMAIL_HOST_NAME, EMAIL_FORM_MAIL,
        EMAIL_FORM_NAME, EMAIL_AUTHENTICATION_USERNAME,
        EMAIL_AUTHENTICATION_PASSWORD, email, EmailTextTemplate.REGISTER_SUBJECT,
        EmailTextTemplate.REGISTER_CONTENT + emailCode + EmailTextTemplate.CONTENT_SUFFIX);
    logger.info("验证码发送成功：{}", email);
    //发送成功，将该验证码按照规定格式放入redis
    redisUtils.set(RestRedisConstant.REST_ELOG_REGISTER_EMAIL_CODE_KEY + email, emailCode, redisExpire);
    logger.info("Redis存储验证码成功：{}", emailCode);
    return R.ok("The verification code has been sent to your mailbox and is valid for 60 seconds.");
  } catch (Exception ex) {
    return R.error(ex.getMessage());
  }
}


/**
 *验证验证码
 /
 public R checkRegisterEmailCode(String email, String code) {
  try {
    String redisCode = redisUtils.get(RestRedisConstant.REST_ELOG_REGISTER_EMAIL_CODE_KEY+email);
    //判断是否已过期
    if (StringUtils.isEmpty(redisCode)){
      return R.error("The E-mail verification code has expired, please try again.");
    }
    //判断验证码是否正确
    if (!StringUtils.equals(redisCode,code)){
      return R.error("The E-mail verification code is wrong. Please try again.");
    }
    //验证成功，从redis中移除该key&value
    redisUtils.delete(RestRedisConstant.REST_ELOG_REGISTER_EMAIL_CODE_KEY+email);
    return R.ok("The E-mail verification code has been verified.");
  }catch (Exception ex){
    throw new RRException(ex.getMessage());
  }
}