读取text文档

一个获取InputStream中字符串内容的方法：

 public static String getString(InputStream inputStream) {
     InputStreamReader inputStreamReader = null;
     try {
         inputStreamReader = new InputStreamReader(inputStream, "gbk");
     } catch (UnsupportedEncodingException e1) {
         e1.printStackTrace();
     }
     BufferedReader reader = new BufferedReader(inputStreamReader);
     StringBuffer sb = new StringBuffer("");
     String line;
     try {
         while ((line = reader.readLine()) != null) {
             sb.append(line);
             sb.append("\n");
         }
     } catch (IOException e) {
         e.printStackTrace();
     }
     return sb.toString();
 }