BufferedReader br = new BufferedReader(new InputStreamReader(new FileInputStream(ksmgVo.getFiledata()), "utf-8"));
while(br.ready()){
      String line = br.readLine();
      //readLine读取第一行会有bug，第一个字符为空字符
      char c = line.charAt(0);
      if(c==65279) {    //65279是空字符
            line = line.substring(1);
      }

      System.out.println(line);
}

br.close();