如何根据行数拆分spring批量文件？

import java.io.*;

public class FileSplitter {
    public static void splitFileByLines(String filePath, int linesPerFile) {
        try {
            // 读取原始文件
            FileReader fileReader = new FileReader(filePath);
            BufferedReader bufferedReader = new BufferedReader(fileReader);

            // 统计原始文件的总行数
            int totalLines = 0;
            while (bufferedReader.readLine() != null) {
                totalLines++;
            }
            bufferedReader.close();

            // 计算每个拆分文件应包含的行数
            int filesCount = (int) Math.ceil((double) totalLines / linesPerFile);
            int linesCount = 0;

            // 创建拆分文件
            for (int i = 0; i < filesCount; i++) {
                FileWriter fileWriter = new FileWriter(filePath + "_part" + (i + 1));
                BufferedWriter bufferedWriter = new BufferedWriter(fileWriter);

                // 将原始文件的内容按行写入拆分文件
                fileReader = new FileReader(filePath);
                bufferedReader = new BufferedReader(fileReader);
                String line;
                while ((line = bufferedReader.readLine()) != null) {
                    bufferedWriter.write(line);
                    bufferedWriter.newLine();
                    linesCount++;

                    // 达到每个拆分文件应包含的行数时，关闭当前拆分文件，创建下一个拆分文件
                    if (linesCount == linesPerFile) {
                        bufferedWriter.close();
                        linesCount = 0;
                        break;
                    }
                }

                bufferedWriter.close();
                bufferedReader.close();
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    public static void main(String[] args) {
        String filePath = "path/to/your/file.txt";
        int linesPerFile = 1000;
        splitFileByLines(filePath, linesPerFile);
    }
}