微信语音保存到本地服务器,文件格式由amr转mp3

最近开发的微信项目里面需要用到微信语音的功能,结合微信开发文档的网页js接口,语音可以在网页上生成并上传到微信服务器,但是微信服务器保存的时间有限,还是保存到自己的本地服务器比较稳当,这样需要把语音文件的serverId传到后台,在后台调用微信api获取语音文件,但获取的音频文件是amr格式的,但是前端的html5的“audio”标签只支持MP3、wav、ogg三种格式,这样又需要将amr文件转为MP3文件,ffmpeg是一般的音视频文件格式转化框架。

总结一下微信语音保存展示的整体流程:

1.调用微信js,生成语音文件

2.上传语音到微信服务器

3.调用微信资源文件接口获取语音文件保存到本地服务器

4.将保存的语音文件由amr转mp3

5.用html5的audio标签播放mp3文件

 

前端jsp页面如下,

<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8" isELIgnored="false"%>
<%@ taglib uri="/struts-tags" prefix="s"%>
<% String path = request.getContextPath(); %>
<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1"/>
    <meta name="viewport" content="width=640, user-scalable=no">
    <meta http-equiv="pragma" content="no-cache">
    <meta http-equiv="Cache-Control" content="no-cache">
    <meta http-equiv="Expires" content="0">
    <meta name="apple-mobile-web-app-capable" content="yes">
    <meta name="apple-mobile-web-app-status-bar-style" content="black">
    <meta name="format-detection" content="telephone=no">
    <meta name="apple-mobile-web-app-title" content="">
    <title>录音test</title>
    <style type="text/css">
        *{ margin:0px; padding:0px; box-sizing:border-box; -webkit-tap-highlight-color:rgba(0,0,0,0);}
        html{ max-width:640px; margin:0 auto;}
        body{ font-family:"PingFangSC-Regular","sans-serif","STHeitiSC-Light","微软雅黑","Microsoft YaHei"; font-size:24px; line-height:1.5em; color:#000;
            -webkit-user-select:none; user-select:none;
            -webkit-touch-callout:none; touch-callout:none;
        }

        .start_btn , .play_btn , .send_btn{ width:250px; height:60px; line-height:60px; margin:20px auto; text-align:center; border:#eee solid 2px; cursor:pointer;}
        .start_btn_in , .stop_btn{ color:#f00; border:#f00 solid 2px;}
    </style>
</head>

<body>

<div class="start_btn">点我录音</div>

<div class="play_btn">点我播放</div>

<div class="send_btn">点我保存</div>

<audio id="au" src="" controls="controls"></audio>

<script src="<%=path%>/js/jquery-1.7.1.js" type="text/javascript"></script>
<script type="text/javascript" src="http://res.wx.qq.com/open/js/jweixin-1.2.0.js"></script>
<script type="text/javascript">
    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: '${appId}', // 必填,公众号的唯一标识
        timestamp:${timestamp}, // 必填,生成签名的时间戳
        nonceStr: '${nonceStr}', // 必填,生成签名的随机串
        signature: '${signTrue}',// 必填,签名,见附录1
        jsApiList: ['onMenuShareTimeline','onMenuShareAppMessage','startRecord','stopRecord','onVoiceRecordEnd','playVoice','stopVoice','onVoicePlayEnd','uploadVoice'] // 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(){
        //返回音频的本地ID
        var localId;
        //返回音频的服务器端ID
        var serverId;
        //录音计时,小于指定秒数(minTime = 10)则设置用户未录音
        var startTime , endTime , minTime = 1;
        //***********************************//
        //开始录音
        $('.start_btn').on('touchstart',function(e){
            e.preventDefault();
            var $this = $(this);
            $this.addClass('start_btn_in');
            startTime = new Date().getTime();

            //开始录音
            wx.startRecord();
        });
        //***********************************//
        //停止录音接口
        $('.start_btn').on('touchend', function(){
            var $this = $(this);
            $this.removeClass('start_btn_in');

            //停止录音接口
            wx.stopRecord({
                success: function (res) {
                    localId = res.localId;
                }
            });

            endTime = new Date().getTime();
            alert((endTime - startTime) / 1000);
            if((endTime - startTime) / 1000 < minTime){
                localId = '';
                alert('录音少于' + minTime +  '秒,录音失败,请重新录音');
            }

        });
        //监听录音自动停止接口
        wx.onVoiceRecordEnd({
            //录音时间超过一分钟没有停止的时候会执行 complete 回调
            complete: function (res) {
                localId = res.localId;

                $('.start_btn').removeClass('start_btn_in');
            }
        });
        //***********************************//

        $('.play_btn').on('click',function(){
            if(!localId){
                alert('您还未录音,请录音后再点击播放');
                return;
            }
            var $this = $(this);
            if($this.hasClass('stop_btn')){
                $(this).removeClass('stop_btn').text('点我播放');
                //停止播放接口
                wx.stopVoice({
                    //需要停止的音频的本地ID,由 stopRecord 或 onVoiceRecordEnd 接口获得
                    localId: localId
                });
            }else{
                $this.addClass('stop_btn').text('点我停止');

                //播放语音接口
                wx.playVoice({
                    //需要播放的音频的本地ID,由 stopRecord 或 onVoiceRecordEnd 接口获得
                    localId: localId
                });
            }
        });
        //监听语音播放完毕接口
        wx.onVoicePlayEnd({
            //需要下载的音频的服务器端ID,由uploadVoice接口获得
            serverId: localId,
            success: function (res) {
                $('.play_btn').removeClass('stop_btn').text('点我播放');
            }
        });
        //***********************************//
        //上传语音接口
        $('.send_btn').on('click',function(){
            if(!localId){
                alert('您还未录音,请录音后再保存');
                return;
            }
            //上传语音接口
            wx.uploadVoice({
                //需要上传的音频的本地ID,由 stopRecord 或 onVoiceRecordEnd 接口获得
                localId: localId,
                //默认为1,显示进度提示
                isShowProgressTips: 1,
                success: function (res) {
                    //返回音频的服务器端ID
                    serverId = res.serverId;
                    $.ajax({
                        async:true,//是否异步
                        type: "post",
                        cache:false,
                        dataType: "text",
                        data:{'mediaId':serverId},
                        url: "<%=path%>/upload/downloadVoice.do",
                        success: function(data) {
                            var ret = $.parseJSON(data);
                            if (ret.statusCode == '200') {
                                var filePath = ret.message;
                                $("#au").attr("src",filePath);

                                alert('已获取上传的语音文件!');
                            } else if (ret.statusCode == '300') {
                                alert('系统故障!');
                            }
                        },
                        error: function(data){                           
                        }
                    });
                }
            });
        });
    });
</script>
</body>
</html>

 

保存语音文件如下:

public String downloadVoice(){

        try {
            if (downloadVoiceFromWx()) {
                ajaxDone = new AjaxDone(CommonEnum.STATUS_CODE_OK.getDescription(), "下载成功!");
                ajaxDone.setNavTabId(ssid);
                ajaxDone.setMessage(pathName);
                writerJson(ajaxDone);
                return null;
            } else {
                log.error("获取微信语音失败");
            }

            ajaxDone = new AjaxDone(CommonEnum.STATUS_CODE_ERROR.getDescription(), "下载失败!");
        }catch (Exception e){
            log.error(e +"微信语音下载失败");
        }
        writerJson(ajaxDone);

        return null;
    }

    public boolean downloadVoiceFromWx(){

        try {
            AccessTokenUtil accessTokenUtil = new AccessTokenUtil();
            String accessToken = accessTokenUtil.getAccessToken();
            log.info("微信accessTokenid1:" + accessToken);
            log.info("mediaId:" + mediaId);

            if (StringUtils.isEmpty(accessToken) || StringUtils.isEmpty(mediaId)) return false;

            String requestUrl = "";
            requestUrl = download_media_url.replace("ACCESS_TOKEN", accessToken).replace("MEDIA_ID", mediaId);
            log.info("获取文件的微信请求>>" + requestUrl);


            String vFileName = getResourceFile(requestUrl);

            String newVFileName = "";

            String extName = vFileName.substring(vFileName.lastIndexOf("."));
            UploadFileTypeEnum uploadFileTypeEnum = UploadFileTypeEnum.checkByExt(extName);

            newVFileName = vFileName.substring(0,vFileName.lastIndexOf(".")) + ".mp3";

            String fileDire = getFileDirectoryPath();

            amrToMp3(fileDire + vFileName,fileDire + newVFileName);

       //保存文件信息到数据库 -- 自己实现
log.info("微信音频下载路径:"+ pathName); return true; }catch (Exception e){ e.printStackTrace(); log.error("获取音频文件失败" + mediaId); return false; } } public String getFileDirectoryPath(){ String bashPath2 = null; //访问的url中间目录=磁盘上保存的中间目录 String bashPath = Config.getConfig().get(Config.FILE_UPLOAD_PATH); //磁盘上保存基础路径 bashPath2 = Config.getConfig().get(Config.FILE_UPLOAD_URL); String savePath = bashPath + bashPath2; //保存路径 File file = new File(savePath); if (!file.exists()) { file.mkdirs(); } return savePath; } public String getResourceFile(String url){ String vFileName = ""; try { URL urlGet = new URL(url); HttpURLConnection http = (HttpURLConnection) urlGet .openConnection(); http.setRequestMethod("GET"); http.setRequestProperty("Content-Type", "application/x-www-form-urlencoded"); http.setDoOutput(true); http.setDoInput(true); http.connect(); // 获取文件转化为byte流 InputStream inputStream = http.getInputStream(); //获取文件名 String ContentDisposition = ""; ContentDisposition = http.getHeaderField("Content-disposition"); vFileName = ContentDisposition.substring(ContentDisposition.indexOf("filename")+10, ContentDisposition.length() -1); String vFilePath = getFileDirectoryPath() + vFileName; //写入音频新文件 FileOutputStream fileOutputStream = null; int size=0; size = inputStream.available(); byte[] data = new byte[size]; int len = 0; fileOutputStream = new FileOutputStream(vFilePath); while ((len = inputStream.read(data)) != -1) { fileOutputStream.write(data, 0, len); } log.info("生成微信音频文件,文件为:" + vFilePath); inputStream.close(); fileOutputStream.close(); } catch (Exception e) { e.printStackTrace(); } return vFileName; }

 

amr转mp3需要调用ffmpeg,下载站点:https://johnvansickle.com/ffmpeg/ 或 http://ffmpeg.org/download.html

解压文件找到ffmpeg文件,放到linux服务器目录下,然后通过java代码调用linux命令行执行转化,代码如下:

public boolean amrToMp3(String localPath, String targetFilePath) {
        try {
            log.info("**************  ffmpeg ****************");
            java.lang.Runtime rt = Runtime.getRuntime();
            String command = "/home/user/server/apache-tomcat/temp/jave-1/ffmpeg -i " + localPath + " " + targetFilePath;
            log.info("command = " + command);
            Process proc = rt.exec(command);
            InputStream stderr = proc.getErrorStream();
            InputStreamReader isr = new InputStreamReader(stderr);
            BufferedReader br = new BufferedReader(isr);
            String line = null;
            StringBuffer sb = new StringBuffer();
            while ((line = br.readLine()) != null){
                sb.append(line);
            }
            log.info("ffmpeg Process errorInfo: " + sb.toString());
            int exitVal = proc.waitFor();
            log.info("ffmpeg Process exitValue: " + exitVal);
            return true;
        } catch (Exception e) {
            log.error("ffmpeg exec cmd Exception " + e.toString());
        }
        return false;
    }

 

 获取mp3文件后,audio控件直接引用linux下的该文件即可播放。

 

转载于:https://www.cnblogs.com/yipiaoganlu/p/9271780.html

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