使用BufferedReader了解文件的偏移量？ [英] Know the offset of a file using BufferedReader?

问题描述

我是java的新手。我正在使用 BufferedReader 读取一个大文件。我怎么知道一行的偏移量，以便我可以将它存储在其他文件中以便编制索引？

I am a newbie to java. I am reading a big file using BufferedReader. How can I know the offset of a line so that I can store it in some other file for indexing purposes?

编辑：
这是我的代码

Here's my code

path=FileSystems.getDefault().getPath(".",filename);
br=Files.newBufferedReader(path_doc_title_index_path, Charset.defaultCharset());
int offset=0; //offset of first line.       
String strline=br.readline();
offset+=strline.length()+1; //offset of second line

推荐答案

如果你问哪个你在一个文件中读取一行，一个简单的行计数器就可以工作

If you are asking which line you are reading in a file, a simple line counter would work

  BufferedReader br = new BufferedReader(new FileReader("C:\\testing.txt"));

  int lineNum = 0;
  while ((sCurrentLine = br.readLine()) != null) {
    System.out.println(sCurrentLine);
    lineNum++;
  }

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