如何使用MappedByteBuffer从java中的映射文件中逐行读取

import java.io.IOException;
import java.io.RandomAccessFile;
import java.nio.MappedByteBuffer;
import java.nio.channels.FileChannel;

public class MappedByteBufferExample {
    public static void main(String[] args) {
        try {
            // 打开文件
            RandomAccessFile file = new RandomAccessFile("path/to/file.txt", "r");
            FileChannel channel = file.getChannel();

            // 创建MappedByteBuffer
            MappedByteBuffer buffer = channel.map(FileChannel.MapMode.READ_ONLY, 0, channel.size());

            // 读取文件内容
            StringBuilder sb = new StringBuilder();
            while (buffer.hasRemaining()) {
                char c = (char) buffer.get();
                if (c == '\n') {
                    // 解析文件内容
                    String line = sb.toString();
                    // 处理每行数据
                    System.out.println(line);
                    sb.setLength(0);
                } else {
                    sb.append(c);
                }
            }

            // 关闭文件
            channel.close();
            file.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}