微信语音上传 下载功能实例代码

<div class="inp_btn voice_btn active" id="record">       按住 说话     </div>

var recorder;var btnRecord = $('#record');var startTime = 0;var recordTimer = 300;// 发语音$.ajax({  url: 'url请求需要微信的一些东西 下面success就是返回的东西',  type: 'get',  data: { url: url },  success: function (data) {    var json = $.parseJSON(data);    //alert(json);    //假设已引入微信jssdk。【支持使用 AMD/CMD 标准模块加载方法加载】    wx.config({      debug: false, // 开启调试模式,调用的所有api的返回值会在客户端alert出来，若要查看传入的参数，可以在pc端打开，参数信息会通过log打出，仅在pc端时才会打印。      appId: json.appid, // 必填，公众号的唯一标识      timestamp: json.timestamp, // 必填，生成签名的时间戳      nonceStr: json.nonceStr, // 必填，生成签名的随机串      signature: json.signature, // 必填，签名，见附录1      jsApiList: [      "startRecord",      "stopRecord",      "onVoiceRecordEnd",      "playVoice",      "pauseVoice",      "stopVoice",      "onVoicePlayEnd",      "uploadVoice",      "downloadVoice",      ] // 必填，需要使用的JS接口列表，所有JS接口列表见附录2    });    wx.ready(function () {      btnRecord.on('touchstart', function (event) {        event.preventDefault();        startTime = new Date().getTime();        // 延时后录音，避免误操作        recordTimer = setTimeout(function () {          wx.startRecord({            success: function () {              localStorage.rainAllowRecord = 'true';              //style="display:block"              $(".voice_icon").css("display", "block");            },            cancel: function () {              layer.open({                content: '用户拒绝了录音授权',                btn: '确定',                shadeClose: false,              });            }          });        }, 300);      }).on('touchend', function (event) {        event.preventDefault();        // 间隔太短        if (new Date().getTime() - startTime < 300) {          startTime = 0;          // 不录音          clearTimeout(recordTimer);        } else { // 松手结束录音          wx.stopRecord({            success: function (res) {              $(".voice_icon").css("display", "none");              voice.localId = res.localId;              // 上传到服务器              uploadVoice();            },            fail: function (res) {              //alert(JSON.stringify(res));              layer.open({                content: JSON.stringify(res),                btn: '确定',                shadeClose: false,              });            }          });        }      });    });  },  error: function () { }})

function uploadVoice() {    //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    //不过，微信只保留3天，而我们需要长期保存，我们需要把资源从微信服务器下载到自己的服务器    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) {        // alert(JSON.stringify(res));        //把录音在微信服务器上的id（res.serverId）发送到自己的服务器供下载。        voice.serverId = res.serverId;        $.ajax({          url: '/QyhSpeech/DownLoadVoice',          type: 'post',          data: { serverId: res.serverId, Id: Id },          dataType: "json",          success: function (data) {            if (data.Result == true && data.ResultCode == 1) {              layer.open({                content: "录音上传完成！",//data.Message                btn: '确定',                shadeClose: false,                yes: function (index) {                  window.location.href = window.location.href;                }              });            }            else {              layer.open({                content: data.Message,                btn: '确定',                shadeClose: false,              });            }          },          error: function (xhr, errorType, error) {            layer.open({              content: error,              btn: '确定',              shadeClose: false,            });          }        });      }    });  }

//下载语音并且转换的方法    private string GetVoicePath(string voiceId, string access_token)    {      string voice = "";      try      {        Log.Debug("access_token:", access_token);        //调用downloadmedia方法获得downfile对象        DownloadFile downFile = WeiXin.DownloadMedia(voiceId, access_token);        if (downFile.Stream != null)        {          string fileName = Guid.NewGuid().ToString();          //生成amr文件          string amrPath = Server.MapPath("~/upload/audior/");          if (!Directory.Exists(amrPath))          {            Directory.CreateDirectory(amrPath);          }          string amrFilename = amrPath + fileName + ".amr";          //var ss = GetAMRFileDuration(amrFilename);          //Log.Debug("ss", ss.ToString());          using (FileStream fs = new FileStream(amrFilename, FileMode.Create))          {            byte[] datas = new byte[downFile.Stream.Length];            downFile.Stream.Read(datas, 0, datas.Length);            fs.Write(datas, 0, datas.Length);          }          //转换为mp3文件          string mp3Path = Server.MapPath("~/upload/audio/");          if (!Directory.Exists(mp3Path))          {            Directory.CreateDirectory(mp3Path);          }          string mp3Filename = mp3Path + fileName + ".mp3";          AudioHelper.ConvertToMp3(Server.MapPath("~/ffmpeg/"), amrFilename, mp3Filename);          voice = fileName;          Log.Debug("voice:", voice);        }      }      catch { }      return voice;    }

//下载微信语音文件    public JsonResult DownLoadVoice()    {      var file = "";      try      {        var serverId = Request["serverId"];//文件的serverId        file = GetVoicePath(serverId, CacheHelper.GetAccessToken());        return Json(new ResultJson { Message = file, Result = true, ResultCode = 1 });      }      catch (Exception ex)      {        return Json(new ResultJson { Message = ex.Message, Result = false, ResultCode = 0 });      }    }

using System;using System.Collections.Generic;using System.Diagnostics;using System.Linq;using System.Text;using System.Text.RegularExpressions;using System.Threading;namespace EYO.Common{  /// <summary>  /// 声音帮助类  /// </summary>  public sealed class AudioHelper  {    private const string FfmpegUsername = "ffmpeg";    private const string FfmpegPassword = "it4pl803";    /// <summary>    /// 音频转换    /// </summary>    /// <param name="ffmpegPath">ffmpeg文件目录</param>    /// <param name="soruceFilename">源文件</param>    /// <param name="targetFileName">目标文件</param>    /// <returns></returns>    public static string ConvertToMp3(string ffmpegPath, string soruceFilename, string targetFileName)    {      //string cmd = ffmpegPath + @"/ffmpeg.exe -i " + soruceFilename + " " + targetFileName;      string cmd = ffmpegPath + @"/ffmpeg.exe -i " + soruceFilename + " -ar 44100 -ab 128k " + targetFileName;      return ConvertWithCmd(cmd);    }    private static string ConvertWithCmd(string cmd)    {      try      {        System.Diagnostics.Process process = new System.Diagnostics.Process();        process.StartInfo.FileName = "cmd.exe";        process.StartInfo.UseShellExecute = false;        process.StartInfo.CreateNoWindow = true;        process.StartInfo.RedirectStandardInput = true;        process.StartInfo.RedirectStandardOutput = true;        process.StartInfo.RedirectStandardError = true;        process.Start();        process.StandardInput.WriteLine(cmd);        process.StandardInput.AutoFlush = true;        Thread.Sleep(1000);        process.StandardInput.WriteLine("exit");        process.WaitForExit();        string outStr = process.StandardOutput.ReadToEnd();        process.Close();        return outStr;      }      catch (Exception ex)      {        return "error" + ex.Message;      }    }  }}