//读取70开头的xml,gbk转成utf-8            //InputStream  is = new FileInputStream(super.getFile());//文件读取              //InputStreamReader   isr = new InputStreamReader(is, "gbk");//解码             String newfile = super.getFilePath()+"\\"+"70.xml";            OutputStream os = new FileOutputStream(newfile);//文件输出              OutputStreamWriter osw = new OutputStreamWriter(os, "utf-8");//开始编码              char[] c = new char[1024];//缓冲              int length = 0;              while(true){                  length = isr.read(c);                  if(length == -1){                      break;                  }                  //System.out.println(new String(c, 0, length));                  osw.write(c, 0, length);                  osw.flush();              }              isr.close();            osw.close();