1 /**
2 *
3 * @param fileName 文件全路径
4 * @param pageNo 页数
5 * @param pageSize 每页的条数
6 * @return
7 */
8 List<String> getLines(String fileName,int pageNo,int pageSize){
9 File file = new File(fileName);
10 BufferedReader reader = null;
11 List<String> lines = new ArrayList<String>();
12 try {
13 int startRow = (pageNo - 1) * pageSize + 1; //计算开始行数
14 int endRow = pageNo * pageSize; //计算结束行数
15 reader = new BufferedReader(new FileReader(file));
16 LineNumberReader lineNumberReader = new LineNumberReader(new FileReader(file));
17 lineNumberReader.skip(Long.MAX_VALUE);
18 int lineNumber = lineNumberReader.getLineNumber() + 1; //获取文件里面的总行数
19 if(endRow >= lineNumber){
20 endRow = lineNumber;
21 }
22 String tempString = "";
23 int line = 0;
24 // 一次读入一行，直到读入null为文件结束
25 while (tempString != null) {
26 line++;
27 tempString = reader.readLine();
28 if(line >= startRow && line <= endRow) {
29 lines.add(tempString);
30 }
31 }
32 reader.close();
33 return lines;
34 } catch (IOException e) {
35 e.printStackTrace();
36 } finally {
37 if (reader != null) {
38 try {
39 reader.close();
40 } catch (IOException e) {
41 e.printStackTrace();
42 }
43 }
44 }
45 return null;
46 }
