使用微信录音将amr转为mp3

一.将前台传来的serverId(mediaId)拿来,用于请求微信接口,获取amr文件,并将amr文件保存在相关路径作为临时文件,具体代码如下:

public static String downloadMediaId(HttpServletRequest request, String mediaId) {
		    InputStream inputStream = getInputStream(mediaId);
		    FileOutputStream fileOutputStream = null;
		    //服务器资源保存路径
	        String savePath = "/data/web/uploadfiles/temp/";//你文件的保存路径
	        String filename = String.valueOf(System.currentTimeMillis()) + ".amr";//文件名
		    try {		       
		        File file = new File(savePath);
		        if (!file.exists()) {
		            file.mkdirs();
		        }
		        byte[] data = new byte[1024];
		        int len = 0;
		        fileOutputStream = new FileOutputStream(savePath + filename);
		        while ((len = inputStream.read(data)) != -1) {
		            // 判断结果是否有错
		            if (new String(data).indexOf("errmsg") > -1) {
		                return null;
		            	//return ;
		            }
		            fileOutputStream.write(data, 0, len);
		        }
		    } catch (IOException e) {
		        e.printStackTrace();
		    } finally {
		        if (inputStream != null) {
		            try {
		                inputStream.close();
		            } catch (IOException e) {
		                e.printStackTrace();
		            }
		        }
		        if (fileOutputStream != null) {
		            try {
		                fileOutputStream.close();
		            } catch (IOException e) {
		                e.printStackTrace();
		            }
		        }
		    }
		    return savePath+filename;
		}

public static InputStream getInputStream(String mediaId) {
		    InputStream is = null;
		    try {
		    	String access_token = WeChatUtil.getAccessToken(MemberController.miniProAppId, MemberController.miniProAppSecret, 0);
		        String URL_DOWNLOAD_TEMP_MEDIA = "https://api.weixin.qq.com/cgi-bin/media/get?access_token=ACCESS_TOKEN&media_id=MEDIA_ID";
		        String url = URL_DOWNLOAD_TEMP_MEDIA.replace("ACCESS_TOKEN", access_token).replace("MEDIA_ID", mediaId);
		        URL urlGet = new URL(url);
		        HttpURLConnection http = (HttpURLConnection) urlGet.openConnection();
		        http.setRequestMethod("GET"); // 必须是get方式请求
		        http.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
		        http.setDoOutput(true);
		        http.setDoInput(true);
		        System.setProperty("sun.net.client.defaultConnectTimeout", "30000");// 连接超时30秒
		        System.setProperty("sun.net.client.defaultReadTimeout", "30000"); // 读取超时30秒
		        http.connect();
		        // 获取文件转化为byte流
		        is = http.getInputStream();
		    } catch (Exception e) {
		        e.printStackTrace();
		    }
		    return is;
		}

该方法返回保存的amr文件的路径

二.将amr文件转为mp3文件,具体如下:

(1).添加环境:

maven项目添加依赖:

<!--amr文件转音频map文件-->
		<dependency>
		    <groupId>com.github.dadiyang</groupId>
		    <artifactId>jave</artifactId>
		    <version>1.0.3</version>
		</dependency>

jar包:

链接:https://pan.baidu.com/s/1YgXbpkxmFbJCupBu2UF61w 
提取码:8sev

(2)具体代码如下:

/**
	 * 将微信语音文件保存
	 * @param serverId
	 * @throws IOException 
	 */
	@RequestMapping(value="/insertWxVoice")
	@ResponseBody
	public Object insertWxVoice(@RequestParam("serverId") String serverId,HttpServletRequest request) throws IOException{
		Map<String,Object> returnMap = new HashMap<>();
		String YearMonthDay = DateUtil.dateFormat(new Date(), "yyyyMMdd");
		String sourcePath = WeChatUtil.downloadMediaId(request,serverId);
		if(sourcePath==null){
		    return AppUtil.returnObject(returnMap,Const.ERRORCODE);
		}
		String targetPath = "/data/web/uploadfiles/voice/"+YearMonthDay+"/"+String.valueOf(System.currentTimeMillis()) + ".mp3";
		File temp = new File("/data/web/uploadfiles/voice/"+YearMonthDay+"/");
		if(!temp.exists()){//如果文件夹不存在
			temp.mkdir();//创建文件夹			
		}
		File source = new File(sourcePath);//源文件
	    File target = new File(targetPath);//目标文件
	    if(!source.exists()){
	    	source.createNewFile();
	    }
	    if(!target.exists()){
	    	target.createNewFile();
	    }
	    //AudioUtils.amrToMp3(source, target);
	    changeToMp3(sourcePath, targetPath);
	    returnMap.put("filename", targetPath);
	    return AppUtil.returnObject(returnMap,Const.SUCCESSCODE);
	}

    public static void changeToMp3(String sourcePath, String targetPath) {  
        File source = new File(sourcePath);  
        File target = new File(targetPath);  
        AudioAttributes audio = new AudioAttributes();  
        Encoder encoder = new Encoder(new MyFFMpegLoader());  
  
        audio.setCodec("libmp3lame");  
        EncodingAttributes attrs = new EncodingAttributes();  
        attrs.setFormat("mp3");  
        attrs.setAudioAttributes(audio);  
  
        try {  
            encoder.encode(source, target, attrs);  
        } catch (IllegalArgumentException e) {  
            e.printStackTrace();  
        } catch (InputFormatException e) {  
            e.printStackTrace();  
        } catch (EncoderException e) {  
            e.printStackTrace();  
        }  
    }  
public class MyFFMpegLoader extends FFMPEGLocator{
    @Override
    protected String getFFMPEGExecutablePath() {
        return "/data/soft/ffmpeg/ffmpeg";  //ffmpeg地址
    }
}

基本流程就是这样

三.在开发流程中,虽然代码很快写完,并且在Windows能很快实现,但是在Linux就遇到了种种问题,现在一一例举:

(1).java.lang.ClassNotFoundException: it.sauronsoftware.jave.AudioUtils

这个错误是因为环境问题,jar包报错位置了

(2)Linux it.sauronsoftware.jave.EncoderException: Duration: N/A, bitrate: N/A

这个在Windows和Linux都会有,但是Windows他能生成mp3文件,并且不为0kb,,二Linux系统是0kb

解决方法:

引入类:

public class MyFFMpegLoader extends FFMPEGLocator{
    @Override
    protected String getFFMPEGExecutablePath() {
        return "/data/soft/ffmpeg/ffmpeg";  //ffmpeg地址
    }
}

 自定义修改ffmpeg地址,是其在Linux系统能够被找到

在changeToMp3()方法中将

Encoder encoder = new Encoder();

改为

Encoder encoder = new Encoder(new MyFFMpegLoader());

(3).改成之后,但还是有问题:

java.io.IOException: Cannot run program "/data/soft/ffmpeg/ffmpeg", 拒绝访问

这是因为这个文件在Linux没有访问权限,应该在Linux系统中执行如下命令:

chmod 777 /data/soft/ffmpeg/ffmpeg
/data/soft/ffmpeg/ffmpeg为文件路径

四.自此,大功告成,如果大家还有什么问题的话,也可以在评论区留言

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转载自blog.csdn.net/qq_37284798/article/details/104555405