Play and save WeChat public account recording files (convert amr files to mp3)

public InputStream getInputStream(String mediaId) {
    InputStream is = null;
    try {
        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", "Write your own code to get accessToken").replace("MEDIA_ID", mediaId);
        URL urlGet = new URL(url);
        HttpURLConnection http = (HttpURLConnection) urlGet.openConnection();
        http.setRequestMethod("GET"); // Must be a get request http.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
        http.setDoOutput(true);
        http.setDoInput(true);
        System.setProperty("sun.net.client.defaultConnectTimeout", "30000"); // Connection timeout 30 seconds System.setProperty("sun.net.client.defaultReadTimeout", "30000"); // Read timeout 30 seconds http.connect();
        // Get the file and convert it into byte stream is = http.getInputStream();
    } catch (Exception e) {
        e.printStackTrace();
    }
    return is;
}

public String downloadMediaId(HttpServletRequest request, String mediaId) {
    String relfilePath = null;
    InputStream inputStream = getInputStream(mediaId);
    FileOutputStream fileOutputStream = null;
    try {
        //Server resource save path String savePath = request.getSession().getServletContext().getRealPath("/") + "upload/" + DateUtil.getYear() + "/wxmedia/audio/";
        savePath = savePath + "audio/"; 
        String filename = String.valueOf(System.currentTimeMillis()) + ".amr";
        relfilePath = "upload/" + DateUtil.getYear() + "/wxmedia/audio/" + filename;
        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) {
            // Determine whether the result is wrong if (new String(data).indexOf("errmsg") > -1) {
                return null;
            }
            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 relfilePath;
}

public void amrToMp3(String sourcePath, String targetPath) {
    File source = new File(sourcePath);
    File target = new File(targetPath);
    AudioUtils.amrToMp3(source, target);
}

<!--amr file to audio map file-->
<dependency>
    <groupId>com.github.dadiyang</groupId>
    <artifactId>jave</artifactId>
    <version>1.0.3</version>
</dependency>