将字节流(byte[])转换成文件

/**
* 将字节流转换成文件
* @param filename
* @param data
* @throws Exception
*/
public static void saveFile(String filename,byte [] data)throws Exception{ 
    if(data != null){ 
      String filepath ="D:\\" + filename; 
      File file  = new File(filepath); 
      if(file.exists()){ 
         file.delete(); 
      } 
      FileOutputStream fos = new FileOutputStream(file); 
      fos.write(data,0,data.length); 
      fos.flush(); 
      fos.close(); 
    } 
}