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2023-05(2)

2023-06(1)

微信开发之JS-SDK + PHP实现录音、上传、语音识别

发布于2021-03-14 06:05 阅读(1044) 评论(0) 点赞(21) 收藏(2)

先看效果图：先录音，录音成功之后，把录音追加到列表，点击列表可以播放；录音完成之后上传录音，上传成功再语音识别。

微信官方文档 https://developers.weixin.qq.com/doc/offiaccount/OA_Web_Apps/JS-SDK.html

实现流程：

一、公众号配置

1.JS安全域名配置：登陆微信公众平台：公众号设置 -> 功能设置 -> JS安全域名，域名写到根域名就行，把下载的txt文件放到域名对应的根目录下

2.配置ip白名单

二、代码展示

1.前端代码

用到了'startRecord', 'stopRecord', 'playVoice', 'uploadVoice', 'translateVoice'五个接口，先调用 startRecord 开始录音，再调用 stopRecord 停止录音，会返回一个音频的本地Id，把录音追加的Html录音列表中，方便播放录音，使用 playVoice 播放录音列表中的录音，再使用 uploadVoice 把录音上传到微信服务器上，会返回微信服务器上的serverId（感觉上传录音没有使用到），通过使用本地音频id去识别语音

<!DOCTYPE html>
<html>
<head>
    <title>语音识别</title>
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1">
<script type="text/javascript" src="/static/index/js/jquery.js"></script>
<script src="http://res2.wx.qq.com/open/js/jweixin-1.6.0.js"></script>
<link rel="stylesheet" type="text/css" href="/static/index/layui/css/layui.css">

      <style>
          button{
              height: 40px;
              width: 120px;
              margin: 25px;
          }
          #ul{
              margin-top: 15px;
              height: 40px;
              line-height: 40px;
              text-align: center;
              padding: 5px;
          }
          #ul li{
              width: 80%;
          }
          #ullist button{
            width:98%;
            height:40px;
            border-radius:5;
            text-align: center;
            margin: 5px;
        }

      </style>
</head>
<body>
    <div class="container" style="width:100%">
        <div class="row">
            <ul class="list-unstyled" id="ullist">
                
            </ul>
        </div>
        <div id="btn" class="navbar-fixed-bottom" style="user-select:none:align-content:center">
            <center>
                <button id="talk_btn" type="button" class="layui-btn">录 音</button>
                <button id="uploadVoice" type="button" class="layui-btn layui-btn-normal">上传 录音</button><br>
                <button id="translateVoice" type="button" class="layui-btn layui-btn-danger" style="width:90%;">语音 识别</button><br>
            </center>
        </div>
    </div>
    
<script type="text/javascript">

    // 全局变量
    var recordTimer = 300;
    var voice={
                  localId:'',
                  serverId:''
              }
    
    wx.config({
        debug: false,
        appId: '{$signPackage.appId}',
        timestamp: {$signPackage.timestamp},
        nonceStr: '{$signPackage.nonceStr}',
        signature: '{$signPackage.signature}',
        jsApiList: [
          // 所有要调用的 API 都要加到这个列表中
          'startRecord', 'stopRecord', 'playVoice', 'uploadVoice', 'translateVoice'
        ]
      });
      
      // 在这里调用 API
    wx.ready(function () {
        var START;
        var END;
        
        // 开始录音
        $("#talk_btn").on('touchstart',function (event) {
            // console.log(event)
            event.preventDefault();
            START = new Date().getTime();

            // 延迟后录音，避免误操作
            recordTimer = setTimeout(function () {

                wx.startRecord({
                    success:function () {
                        // 授权录音
                        localStorage.rainAllowRecord = 'true';
                    },
                    cancel:function () {
                        console.log('用户拒绝了录音');
                    }
                });
            },300)
        });
        
        //松手结束录音
        $('#talk_btn').on('touchend', function(event){
            event.preventDefault();
            END = new Date().getTime();
            
            if((END - START) < 3000){
                END = 0;
                START = 0;
                alert('录音时间不能少于3秒');
                //小于300ms，不录音
                clearTimeout(recordTimer);
            }else{
                
                var mytime = new Date().toLocaleTimeString();  //获取当前时间
                
                wx.stopRecord({
                  success: function (res) {
                      
                    voice.localId = res.localId;
                    console.log(voice.localId)
                    var str="<li audioid='"+voice.localId+"'><button class='layui-btn layui-btn-primary'>音频任务"+mytime+"</button></li>";
                    $("#ullist").append(str);//显示到列表
                  },
                  fail: function (res) {
                    alert(JSON.stringify(res));
                  }
                });
            }
        });
    });
    wx.error(function (res) {
        console.log(res)
    });
    
    //list播放语音
    $("ul").on("click", "li", function() {
        var audioid = $(this).attr("audioid");
        
        wx.playVoice({
            localId: audioid
        });
    })

    // 上传语音
    $("#uploadVoice").click(function(){
        
        //调用微信的上传录音接口把本地录音先上传到微信的服务器
        wx.uploadVoice({
            localId:voice.localId,    // 需要上传的音频的本地ID，由stopRecord接口获得
            isShowProgressTips: 1,    // 默认为1，显示进度提示
            success:function(res){
                
                if(res.errMsg == 'uploadVoice:ok'){
                    voice.serverId = res.serverId
                    alert('录音上传成功');
                }else{
                    alert(res.errMsg)
                }
            }
        })
    })
    
    // 语音识别
    $("#translateVoice").click(function(){
        wx.translateVoice({
            localId:voice.localId,    // 需要识别的音频的本地Id，由录音相关接口获得
            isShowProgressTips:1,    // 默认为1，显示进度提示
            success:function(res){
                console.log(res)
                if(res.errMsg == "translateVoice:ok"){
                    alert(res.translateResult);    // 语音识别的结果
                }else{
                    alert(res.errMsg)
                }
                
            }
        })
    })

</script>

</body>

</html>

后端代码（php）

Wechat.php 此类主要是获取accessToken和jsapiTicket

<?php
namespace app\index\controller;
use think\Controller;

/**
 * 微信类
 */
class Wechat extends Controller
{

    protected  $APPID = 'XXXXXXXXXXXXX';
    protected  $APPSECRET = 'xxxxxxxxxxxxxxxxxx';

    /**
    * 微信服务器配置时 验证token的url
    */
    public function checkToken()
    {
        header("Content-type: text/html; charset=utf-8");

        //1.将timestamp,nonce,toke按字典顺序排序
        $timestamp = $_GET['timestamp'];
        $nonce = $_GET['nonce'];
        $token = 'asd123456zxc';
        $signature = $_GET['signature'];
        $array = array($timestamp,$nonce,$token);
        //2.将排序后的三个参数拼接之后用sha1加密
        $tmpstr = implode('',$array);
        $tmpstr = sha1($tmpstr);
        //3.将加密后的字符串与signature进行对比，判断该请求是否来自微信
        if($tmpstr == $signature){
            echo $_GET['echostr'];
            exit;
        }
    }

    /**
    * curl请求 
    */
    public function http_curl($url, $type = 'get', $res = 'json', $arr = ''){
      $cl = curl_init();
      curl_setopt($cl, CURLOPT_URL, $url);
      curl_setopt($cl, CURLOPT_RETURNTRANSFER, 1);
      curl_setopt($cl, CURLOPT_SSL_VERIFYPEER, false);
      curl_setopt($cl, CURLOPT_SSL_VERIFYHOST, false);
      if($type == 'post'){
        curl_setopt($cl, CURLOPT_POST, 1);
        curl_setopt($cl, CURLOPT_POSTFIELDS, $arr);
      }
      $output = curl_exec($cl);
      curl_close($cl);
      return json_decode($output, true);
      if($res == 'json'){
        if( curl_error($cl)){
          return curl_error($cl);
        }else{
          return json_decode($output, true);
        }
      }
    }

    /**
     * 获取 AccessToken
     */
    public function getAccessToken()
    {
        $url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=".$this->APPID."&secret=".$this->APPSECRET;

        // 先判断 access_token 文件里的token是否过期，没过期继续使用，过期就更新
        $data = json_decode($this->get_php_file(ROOT_PATH."public".DS."wxtxt".DS."access_token.txt"));
        // 过期 更新
        if ($data->expire_time < time()) {
            
            $res = $this->http_curl($url);
            $access_token = $res['access_token'];
            if ($access_token) {
                // 在当前时间戳的基础上加7000s (两小时)
                $data->expire_time = time() + 7000;
                $data->access_token = $res['access_token'];
                $this->set_php_file(ROOT_PATH."public".DS."wxtxt".DS."access_token.txt",json_encode($data));
            }
        }else{
            // 未过期 直接使用
            $access_token = $data->access_token;
        }
        return $access_token;
    }
    
      /**
     * 获取 JsApiTicket
     */
      public function getJsApiTicket()
      {
          // 先判断 jsapi_ticket是否过期 没过期继续使用，过期就更新
          $data = json_decode($this->get_php_file(ROOT_PATH."public".DS."wxtxt".DS."jsapi_ticket.txt"));

          if ($data->expire_time < time()) {
              // 过期 更新
              $accessToken = $this->getAccessToken();
              $url = "https://api.weixin.qq.com/cgi-bin/ticket/getticket?type=jsapi&access_token=$accessToken";
              $res = $this->http_curl($url);
              $ticket = $res['ticket'];
              if ($ticket) {
                  $data->expire_time = time() + 7000;
                  $data->jsapi_ticket = $ticket;
                  $this->set_php_file(ROOT_PATH."public".DS."wxtxt".DS."jsapi_ticket.txt",json_encode($data));
              }
          }else{
              $ticket = $data->jsapi_ticket;
          }
          return $ticket;
      }


    // 获取存储文件中的token ticket
    private function get_php_file($filename) {
        return trim(file_get_contents($filename));
      }
      // 把token ticket 存储到文件中
      private function set_php_file($filename, $content) {
        $fp = fopen($filename, "w");
        fwrite($fp,  $content);
        fclose($fp);
      }

}

Wxmedia.php 此类是返回语音识别的配置信息

<?php
namespace app\index\controller;
use think\Controller;
use app\index\controller\Wechat;

/**
 * 微信语音识别
 */
class Wxmedia extends Wechat
{

    /**
     * 语音识别
     */
    public function index()
    {
        $signPackage = json_decode($this->getSignPackage(),true);
    
        $this->assign('signPackage',$signPackage);
        return $this->fetch();
    }

    /**
     * 生成签名
     */
    public function getSignPackage() 
    {

        // 实例化微信操作类
        $wx = new Wechat();

        // 获取 ticket
        $jsapiTicket = $wx->getJsApiTicket();

        // 注意 URL 一定要动态获取，不能 hardcode.
        $protocol = (!empty($_SERVER['HTTPS']) && $_SERVER['HTTPS'] !== 'off' || $_SERVER['SERVER_PORT'] == 443) ? "https://" : "http://";
        // 当前页面的url
        $url = $protocol.$_SERVER[HTTP_HOST].$_SERVER[REQUEST_URI];

        $timestamp = time();    //生成签名的时间戳
        $nonceStr = $this->createNonceStr();    //生成前面的随机串

        // 这里参数的顺序要按照 key 值 ASCII 码升序排序
        $string = "jsapi_ticket=$jsapiTicket&noncestr=$nonceStr&timestamp=$timestamp&url=$url";
        // 对string进行sha1加密
        $signature = sha1($string);

        $signPackage = array(
          "appId"     => $wx->APPID,
          "nonceStr"  => $nonceStr,
          "timestamp" => $timestamp,
          "signature" => $signature
        );
        return json_encode($signPackage); 
    }

    /**
     * 生成签名的随机串
     */
    private function createNonceStr($length = 16) {
        $chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
        $str = "";
        for ($i = 0; $i < $length; $i++) {
          $str .= substr($chars, mt_rand(0, strlen($chars) - 1), 1);
        }
        return $str;
    }
    
}