Java读取txt文本转List

最近在做一个读取文本的小工具，编码重复性的工作。该工具是读取文本文件指定的行，并且指定的第一行作为Map的key，其他行为value。如下图，读取第1到4行，会生成一个List<Map>，每个Map中是{"goods": "123"}。读取第5到7行，生成[{"name":"拉拉", "phone":"13570885458", "parentphone":"10086"}, {}]。

package me.zebin.demo.javaio;

import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;

import java.io.*;
import java.util.*;

@RunWith(SpringRunner.class)
@SpringBootTest
public class JavaioApplicationTests {

    @Test
    public void contextLoads() throws Exception {

        List<Map> goodsList = readText2Map("C:\\Users\\huang\\Desktop\\io.txt", 1, 4);
        List<Map> agentList = readText2Map("C:\\Users\\huang\\Desktop\\io.txt", 5, 7);
    }

    public List<Map> readText2Map(String filePath, int startLine, int endLine) {

        List<Map> resultList = new ArrayList<>();
        // 存放标头
        List<String> headerList = null;
        try {
            // 文件读取准备
            InputStream is = new FileInputStream(filePath);
            Reader r = new InputStreamReader(is, "gb2312");
            BufferedReader br = new BufferedReader(r);

            // 读取行
            for (int i = 1; i <= endLine; i++) {
                String line = br.readLine();
                if (i < startLine) {
                    continue;
                }

                // 处理行
                line = line.trim();
                List<String> elementList = Arrays.asList(line.split(" "));
                // 标头
                if(i == startLine){
                    headerList = elementList;
                    continue;
                }

                Map<String, String> m = new HashMap<>();
                for(int j = 0; j < headerList.size(); j++){
                    m.put(headerList.get(j), elementList.get(j));
                }
                resultList.add(m);
            }
            br.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
        return resultList;
    }
}