单文件上传与微信多媒体文件转码

项目中用到的文件上传和微信录音持久化到本地
public class FileOperateUtil {
    private static final String fileServerUrl = PropertiesUtil.get("File.fileServerUrl");
    private static final String fileNetServerUrl = PropertiesUtil.get("File.fileNetServerUrl");
    
    /**
     * arm 转码 mp3
     * @param uploadFile
     * @throws Exception
     */
    private static boolean armToMp3(File uploadFile) throws Exception{
        boolean trans = false;
        String sourePath = uploadFile.getCanonicalPath();
        String outPath = sourePath.substring(0, sourePath.lastIndexOf(".")).concat(".mp3");
        List<String> cmd = new ArrayList<String>();
        String os = System.getProperties().getProperty("os.name");
        if(os.indexOf("Mac") >= 0){
            cmd.add("/usr/local/bin/ffmpeg");  //ffmpeg 可执行地址 
        }else if(os.indexOf("Linux") >= 0){
            cmd.add("/usr/bin/ffmpeg");  //ffmpeg 可执行地址 
        }else{
            cmd.add("C:/Program Files/ffmpeg.exe");  //ffmpeg 可执行地址 
        }
        cmd.add("-i");
              cmd.add(sourePath);
              cmd.add("-y");
              cmd.add(outPath);
              StringBuffer getter = new StringBuffer();
              for(int i=0;i<3;i++){
                  boolean mp3 =  ExecutiveShell.exec(cmd,getter);
                  if(mp3){
                      trans = true;
                      break;
                  }
              }
           if(!trans){
               trans = false;
               uploadFile.deleteOnExit();
               throw new Exception("语音转码失败！");
           }else{
               return trans;
           }
    }
    
    /**
     * @描述 单文件上传
     * @日期 2016年11月22日 下午11:12:57
     * @version 1.0
     * @param in
     * @param fileName
     * @return
     */
    public static String singleFileUpload(InputStream in,String fileName){
        String returnUrl = null;
        String upLoadUrl = null;
        OutputStream out = null;
        File file = null;
        byte[] buf = new byte[1024 * 10];
        int length = 0;
        // 每个月的上传文件都分开
        String filePath = new SimpleDateFormat("yyyy-MM").format(new Date());
        try{
            //获取文件类型
            String type = fileName.substring(fileName.indexOf('.')+1);
            //根据文件类型分开
            filePath = "/"+filePath + "/"+type+"/";
            upLoadUrl = fileServerUrl + filePath;
            //文件夹判断补全
            file = new File(upLoadUrl);
            file.mkdirs();
            file = new File(upLoadUrl+fileName);
            out = new FileOutputStream(file);
            while ((length = in.read(buf)) != -1) {
                out.write(buf, 0, length);
                out.flush();
            }
            returnUrl =fileNetServerUrl + filePath+fileName;
            out.close();
            in.close();
        }catch(Exception e){
            returnUrl = null;
        }finally{
            try{
                buf = null;
                if (out != null){
                    out.close();
                }
                if (in != null){
                    in.close();
                }
                if(armToMp3(file)){
                    returnUrl = returnUrl.substring(0,returnUrl.lastIndexOf(".")).concat(".mp3");
                }
            }catch(Exception e){
            }
        }
        return returnUrl;
    }
}