java 微信服务器录音下载到自己服务器，并转为wav格式

冷不防 2023-10-17 21:16 132阅读 0赞

/\*\*  
\*  
\* 根据文件id获取文件流  
\* @param mediaId  
\* 媒体id  
\* @throws Exception  
\*/  
  
public static InputStream getInputStream(String mediaId) \{  
String accessToken=TaskController.getAccessToken();  
InputStream is = null;  
String url = "http://file.api.weixin.qq.com/cgi-bin/media/get?access\_token="  
\+ accessToken + "&media\_id=" + mediaId;  
try \{  
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();  
System.out.println("文件流======："+is);  
  
\} catch (Exception e) \{  
e.printStackTrace();  
\}  
return is;  
  
\}  
  
  
/\*\*  
\*  
\* 创建文件路径和文件名称  
\*/

private String getFilePath() \{  
 String baseFolder = propertieService.REPOSITORY\_PATH+File.separator + "images";  
 Date nowDate = new Date();  
 // yyyy/MM/dd  
 String fileFolder = baseFolder + File.separator + new DateTime(nowDate).toString("yyyy")  
 \+ File.separator + new DateTime(nowDate).toString("MM") + File.separator  
 \+ new DateTime(nowDate).toString("dd");  
 File file = new File(fileFolder);  
 if (!file.isDirectory()) \{  
 // 如果目录不存在，则创建目录  
 file.mkdirs();  
 \}  
 // 生成新的文件名  
 //String fileName = new DateTime(nowDate).toString("yyyyMMddhhmmssSSSS")  
 // + RandomUtils.nextInt(100, 9999) + "." + StringUtils.substringAfterLast(sourceFileName, ".");  
 // 生成新的文件名--微信下载的文件格式为amr  
 String fileName = new DateTime(nowDate).toString("yyyyMMddhhmmssSSSS")  
 \+ RandomUtils.nextInt(100, 9999) + "." + "amr";  
 return fileFolder + File.separator + fileName;

/\*\*  
\*  
\* 获取下载文件信息，保存到磁盘  
\* @param mediaId  
\* 文件的id  
\* @throws Exception  
\*/  
@ResponseBody  
@RequestMapping(value="downAndupload",method=RequestMethod.GET)  
public String saveToDisk(String mediaId)\{  
//public String saveToDisk(String mediaId)throws Exception \{  
InputStream inputStream = getInputStream(mediaId);  
FileOutputStream fileOutputStream = null;  
int size=0;  
try \{  
size = inputStream.available();  
byte\[\] data = new byte\[size\];  
int len = 0;  
// 文件新路径  
String filePath = getFilePath();  
// 生成图片的绝对引用地址  
// 封装Result对象，并且将文件的byte数组放置到result对象中  
PicUploadResult fileUploadResult = new PicUploadResult();  
String picUrl = StringUtils.replace(StringUtils.substringAfter(filePath, propertieService.REPOSITORY\_PATH), "\\\\", "/");  
fileUploadResult.setUrl(propertieService.IMAGE\_BASE\_URL + picUrl);  
fileOutputStream = new FileOutputStream(filePath);  
while ((len = inputStream.read(data)) != -1) \{  
fileOutputStream.write(data, 0, len);  
//String url=convertAmr2Mp3(fileUploadResult.getUrl());  
String url=convertAmr2Mp3(propertieService.REPOSITORY\_PATH+picUrl);  
//return fileUploadResult.getUrl();  
String wavUrl = StringUtils.replace(StringUtils.substringAfter(url, propertieService.REPOSITORY\_PATH), "\\\\", "/");  
return propertieService.IMAGE\_BASE\_URL+wavUrl;  
\}  
\} 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 null;  
\}

//从微信下载下来的文件格式是amr格式的，amr的文件比较小，下载下来后可以在手机上播放，但是不能通话html标签进行播放，因此将其转为wav或者mp3才能在html里面播放，下面贴出转为wav格式文件的代码，转为mp3的与此相似，但是我没有转成功，有转为成功的可赐教。

/\*\*  
\* 将amr格式转为wav格式  
\* @param amrFilePath amr文件  
\* @return wav文件路径  
\*/  
public static String convertAmr2Mp3(String amrFilePath) \{  
File source = new File(amrFilePath);  
String extension = amrFilePath.substring(amrFilePath.lastIndexOf("."));  
String targetFilename = amrFilePath.replace(extension, ".wav");  
  
String os = System.getProperties().getProperty("os.name").toLowerCase();  
if (os.startsWith("win")) \{  
File target = new File(targetFilename);  
Encoder encoder = new Encoder();  
EncodingAttributes attrs = new EncodingAttributes();  
attrs.setFormat("mp3");  
AudioAttributes audio = new AudioAttributes();  
audio.setCodec("libmp3lame");  
attrs.setAudioAttributes(audio);  
try \{  
encoder.encode(source, target, attrs);  
\} catch (Exception e) \{  
e.printStackTrace();  
LOGGER.debug("win convert amr to wav error", e.getMessage());  
\}  
\} else \{  
String command = "ffmpeg -i " + amrFilePath + " "+ targetFilename;  
try \{  
Runtime.getRuntime().exec(command);  
\} catch (IOException e) \{  
e.printStackTrace();  
LOGGER.debug("linux convert amr to wav error", e.getMessage());  
\}  
\}  
  
return targetFilename;  
\}