这里需要用到一个jar包:jave-1.0.1.jar,下载地址的话自己百度吧.

废话不多说直接贴代码：

    import it.sauronsoftware.jave.AudioAttributes;  
    import it.sauronsoftware.jave.Encoder;  
    import it.sauronsoftware.jave.EncodingAttributes;  
      
    import java.io.File;  
      
      
      
      
    public class Test {  
          
        /** 
         * 执行转化过程 
         *  
         * @param source 
         *            源文件 
         * @param desFileName 
         *            目标文件名 
         * @return 转化后的文件 
         */  
        public static File execute(File source, String desFileName)  
                throws Exception {  
            File target = new File(desFileName);  
            AudioAttributes audio = new AudioAttributes();  
            audio.setCodec("libmp3lame");  
            audio.setBitRate(new Integer(36000)); //音频比率 MP3默认是1280000  
            audio.setChannels(new Integer(2));  
            audio.setSamplingRate(new Integer(44100));  
            EncodingAttributes attrs = new EncodingAttributes();  
            attrs.setFormat("mp3");  
            attrs.setAudioAttributes(audio);  
            Encoder encoder = new Encoder();  
            encoder.encode(source, target, attrs);  
            return target;  
        }  
          
       public static void main(String[] args) throws Exception {  
               File file = new File("c://1111.wav");  
               execute(file,  "c://111.mp3");  
       }  
    }