在 Web 应用程序中使用 twilio 进行语音通话

Question

我们正在尝试为我们的网络应用程序使用语音呼叫。 我们尝试使用以下代码：

public class MakeCall {
  public static final String ACCOUNT_SID = "ACbXXXXXXXXXXXXXXXXXXXXXXXX";
  public static final String AUTH_TOKEN = "545XXXXXXXXXXXXXXXXXXXXXXXX";
  public static final String TWILIO_NUMBER = "+185XXXXXXXXX";
  public static void main(String[] args) throws TwilioRestException {
    TwilioRestClient client = new TwilioRestClient(ACCOUNT_SID, AUTH_TOKEN);
    Account mainAccount = client.getAccount();
    CallFactory callFactory = mainAccount.getCallFactory();
    Map<String, String> callParams = new HashMap<String, String>();
    callParams.put("From",TWILIO_NUMBER);
    callParams.put("To", "+919014512394");
    callParams.put("Url", "http://ahoy.twilio.com/voice/api/demo");
    Call call = callFactory.create(callParams);
    System.out.println(call.getSid());
  }
}

从上面的代码中，我们可以听到 twilio 客户的声音，即，欢迎使用 Twilio 语音演示应用程序。按 1 收听明天的天气预报。按 2 聆听歌曲。按 3 创建或加入会议桥。按 4 录制您的声音 5 秒钟。

其实我们是想通过twilio号码拨打其他手机号码

基本上我们是 twilio API 的新手。请指导我们 提前谢谢

Answer 1

这里是 Twilio 开发者宣传员。

您编写的代码将在您调用该端点时发起一个新调用。如果你想发起一个新呼叫，然后连接到另一个号码以便你们两个可以通话，你需要稍微改变一下，为你的号码做 Dials。

这是一个完整的工作示例，向您展示如何选择要与之交谈的人，然后拨打该人的电话。

package com.twilio;

import com.twilio.twiml.Gather;
import com.twilio.twiml.Method;
import com.twilio.twiml.Play;
import com.twilio.twiml.Say;
import com.twilio.twiml.TwiMLException;
import com.twilio.twiml.VoiceResponse;

import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.HashMap;

public class TwilioServlet extends HttpServlet {

    public void service(HttpServletRequest request, HttpServletResponse response) throws IOException {
        // Create a dict of people we know.
        HashMap<String, String> callers = new HashMap<String, String>();
        callers.put("+14158675309", "Curious George");
        callers.put("+14158675310", "Boots");
        callers.put("+14158675311", "Virgil");

        String fromNumber = request.getParameter("From");
        String knownCaller = callers.get(fromNumber);
        String message;
        if (knownCaller == null) {
            // Use a generic message
            message = "Hello Monkey";
        } else {
            // Use the caller's name
            message = "Hello " + knownCaller;
        }

        // Create a TwiML response and add our friendly message.
        VoiceResponse twiml = new VoiceResponse.Builder()
                .say(new Say.Builder(message).build())
                // Play an MP3 for incoming callers.
                .play(new Play.Builder("http://demo.twilio.com/hellomonkey/monkey.mp3").build())
                .gather(new Gather.Builder()
                        .action("/handle-key")
                        .method(Method.POST)
                        .numDigits(1)
                        .say(new Say
                                .Builder("To speak to a real monkey, press 1. Press any other key to start over.")
                                .build())
                        .build()
                )
                .build();

        response.setContentType("application/xml");
        try {
            response.getWriter().print(twiml.toXml());
        } catch (TwiMLException e) {
            e.printStackTrace();
        }
    }
}

1. 您从包含所有电话号码的 HashMap 开始

2. 按下数字后，将调用 /handle-key 端点。这就是拨打另一个号码的逻辑发生的地方

   package com.twilio;
   
   import com.twilio.twiml.Dial;
   import com.twilio.twiml.Number;
   import com.twilio.twiml.Say;
   import com.twilio.twiml.TwiMLException;
   import com.twilio.twiml.VoiceResponse;
   
   import javax.servlet.http.HttpServlet;
   import javax.servlet.http.HttpServletRequest;
   import javax.servlet.http.HttpServletResponse;
   import java.io.IOException;
   
   public class TwilioHandleKeyServlet extends HttpServlet {
   
       @Override
       public void service(HttpServletRequest request, HttpServletResponse response) throws IOException {
   
           String digits = request.getParameter("Digits");
           VoiceResponse twiml;
           // Check if the user pressed "1" on their phone
           if (digits != null && digits.equals("1")) {
               // Connect 310 555 1212 to the incoming caller.
               Number number = new Number.Builder("+13105551212").build();
               Dial dial = new Dial.Builder().number(number).build();
   
               // If the above dial failed, say an error message.
               Say say = new Say.Builder("The call failed, or the remote party hung up. Goodbye.").build();
   
               twiml = new VoiceResponse.Builder().dial(dial).say(say).build();
           } else {
               // If they didn't press 1, redirect them to the TwilioServlet
               response.sendRedirect("/twiml");
               return;
           }
   
           response.setContentType("application/xml");
           try {
               response.getWriter().print(twiml.toXml());
           } catch (TwiMLException e) {
               e.printStackTrace();
           }
       }
   }
   

您可以阅读此内容的完整说明并在此quickstart 中找到其他示例。

希望对你有所帮助。