java实现发送邮箱验证码

<!-- 邮箱验证码 https://mvnrepository.com/artifact/org.apache.commons/commons-email -->
     <dependency>
           <groupId>org.apache.commons</groupId>
           <artifactId>commons-email</artifactId>
      <version>1.4</version>
</dependency>

 
    @Override
    public String generateVerifyCode(int number) {
        Random random = new Random();
        StringBuilder builder = new StringBuilder();
        for (int i = 1; i <= number; i++) {
            builder.append(random.nextInt(10));
        }
        return builder.toString();
    }

 
    @Override
    public int sendAuthCodeEmail(String email) {
        try {
            htmlEmail mail = new HtmlEmail();
            
            mail.setHostName("smtp.qq.com");
            
            mail.setCharset("UTF-8");
            
            mail.setAuthentication("发送消息的邮箱如：2212312@qq.com", "密码");
            
            mail.setFrom("发件邮箱", "发件人");
            
            mail.setSSLOnConnect(true);
            
            mail.addTo("123123@qq.com");
            
            String code = this.generateVerifyCode(6);
            
            mail.setSubject("注册验证码");
            
            mail.setMsg("尊敬的用户:你好! 注册验证码为:" + code + "(有效期为一分钟)");
            mail.send();//发送
        } catch (Exception e) {
            return 0;
        }
        return 1;
    }