微信小程序录音文件格式silk遇到的问题及解决方法

import java.io.bufferedreader;

import java.io.file;

import java.io.fileinputstream;

import java.io.filenotfoundexception;

import java.io.fileoutputstream;

import java.io.ioexception;

import java.io.inputstreamreader;

import com.qcloud.utilities.base64;

public class base64webm {

  public static void readtxtfile(string filepath) {

  try {

  string encoding = "utf-8" ;

  file file = new file(filepath);

  if (file.isfile() && file.exists()) { // 判断文件是否存在

  inputstreamreader read = new inputstreamreader( new fileinputstream(file), encoding); // 考虑到编码格式

  bufferedreader bufferedreader = new bufferedreader(read);

  stringbuilder linetxt = new stringbuilder();

  string line = null ;

  while ((line = bufferedreader.readline()) != null ) {

   linetxt.append(line);

  }

  read.close();

  string olddata = linetxt.tostring();

  olddata = olddata.replace( "data:audio/webm;base64," , "" );

  system.out.println(olddata);

    try {

    file webmfile = new file( "d:\\project\\liulei\\doc\\互动直播室\\微课网页开发\\silk2mp3\\caole.webm" );

    byte [] bt = base64.decode(olddata) ;

     fileoutputstream in = new fileoutputstream(webmfile);

     try {

      in.write(bt, 0 , bt.length);

      in.close();

      // boolean success=true;

      // system.out.println("写入文件成功");

     } catch (ioexception e) {

      // todo auto-generated catch block

      e.printstacktrace();

     }

    } catch (filenotfoundexception e) {

     // todo auto-generated catch block

     e.printstacktrace();

    }

  } else {

  system.out.println( "找不到指定的文件" );

  }

  } catch (exception e) {

  system.out.println( "读取文件内容出错" );

  e.printstacktrace();

  }

  }

  public static void main(string[] args) {

  readtxtfile( "d:\\project\\liulei\\doc\\互动直播室\\微课网页开发\\silk2mp3\\liulie.silk" );

  }

}