如何设置 Twilio TophoneNumber 获取此号码作为 Spring Boot 中的用户输入

Question

“我正在实现一种注册机制，其中我的字段中有一个电话号码属性。如何向用户在使用 Twilio 注册期间输入的该电话号码发送消息？”

这用于在成功创建帐户后向用户发送 Twilio SMS 通知。下面是我的代码的实现方式。

private static final String ACCOUNT_SID = "ACd176f3083e1333d14939fe6f27d90a99";
private static final String AUTH_ID = "4e3327cb4efbe3ecd8e893d809533763";

public void sendSMS() {
    try {
        User user = new User();
        Twilio.init(ACCOUNT_SID, AUTH_ID);

        Message.creator(new PhoneNumber(user.getPhoneNumber()), new PhoneNumber("[phone]"),
                "Your account has been created succesfuly.").create();

    }
    catch (TwilioException e) {
        System.out.println("An error occured from twillio."+e.getMessage());
    }
}

@PostMapping(value="/registerUser")
public ModelAndView registerUser(@Valid User user, BindingResult bindingResult, ModelAndView modelAndView){

//skipped other is statements for checking possible errors.
else{
        //set a user to disabled by default before activation thru email.
        user.setEnabled(false);

        //save a user in the database.
        userService.save(user);

        //generating the confirmation token

        ConfirmationToken confirmationToken = new ConfirmationToken(user);
        confirmationTokenRepository.save(confirmationToken);

        //sending the email message

        SimpleMailMessage simpleMailMessage =   new     SimpleMailMessage();
        simpleMailMessage.setTo(user.getEmail());
        simpleMailMessage.setSubject("Complete your registrations");
        simpleMailMessage.setFrom("[email protected]");
        simpleMailMessage.setText("To activate your account, please     click here : "
        +"http://localhost:8080/activate-    account?token="+confirmationToken.getConfirmationToken());

        emailSenderService.sendEmail(simpleMailMessage);
        modelAndView.addObject("Email ", user.getEmail());

        //send also an sms message using Twilio.
        sendSMS();

        modelAndView.setViewName("successfulRegistration");

    }

    return modelAndView;
}

用户输入电话号码的 Thymeleaf 段。

<form action="#" th:action="@{/registerUser}" th:object="${user}"  method="post" >
 <div class="form-group">
    <label th:for="phoneNumber">Phone Number: </label>
    <input class="form-control" th:field="*{phoneNumber}" />
    <br>
    <label th:for="phoneNumber" th:if="${#fields.hasErrors('email')}" th:errors="*{phoneNumber}" required="required"
           class="btn btn-danger">
    </label>

</div>
</form>

我希望系统获取电话号码并将其设置为 Twilio TophoneNumber。但是，我遇到了这个错误：

twillio 发生错误。需要“收件人”电话号码。

Answer 1

User user = new User();
        Twilio.init(ACCOUNT_SID, AUTH_ID);

        Message.creator(new PhoneNumber(user.getPhoneNumber())

用户对象的phoneNumber为空，因为您从未在代码中的任何位置设置它。 所以你在这里得到空指针异常

user.getPhoneNumber()

如果你这样写：

User user = new User();
user.setPhoneNumber("[phone]");
        Twilio.init(ACCOUNT_SID, AUTH_ID);

        Message.creator(new PhoneNumber(user.getPhoneNumber()), new PhoneNumber("[phone]"),
                "Your account has been created succesfuly.").create();

那么它应该可以正常工作而不会出现空指针异常

---

下面的代码可以工作。

public void sendSMS(User user) {
    try {

        Twilio.init(ACCOUNT_SID, AUTH_ID);

        Message.creator(new PhoneNumber(user.getPhoneNumber()), new PhoneNumber("[phone]"),
                "Your account has been created succesfuly.").create();

    }
    catch (TwilioException e) {
        System.out.println("An error occured from twillio."+e.getMessage());
    }
}

@PostMapping(value="/registerUser")
public ModelAndView registerUser(@Valid User user, BindingResult bindingResult, ModelAndView modelAndView){

//skipped other is statements for checking possible errors.
else{
        //set a user to disabled by default before activation thru email.
        user.setEnabled(false);

        //save a user in the database.
        userService.save(user);

        //generating the confirmation token

        ConfirmationToken confirmationToken = new ConfirmationToken(user);
        confirmationTokenRepository.save(confirmationToken);

        //sending the email message

        SimpleMailMessage simpleMailMessage =   new     SimpleMailMessage();
        simpleMailMessage.setTo(user.getEmail());
        simpleMailMessage.setSubject("Complete your registrations");
        simpleMailMessage.setFrom("[email protected]");
        simpleMailMessage.setText("To activate your account, please     click here : "
        +"http://localhost:8080/activate-    account?token="+confirmationToken.getConfirmationToken());

        emailSenderService.sendEmail(simpleMailMessage);
        modelAndView.addObject("Email ", user.getEmail());

        //send also an sms message using Twilio.
        sendSMS(user);

        modelAndView.setViewName("successfulRegistration");

    }

    return modelAndView;
}