读取CSV文件

package com.csv;

import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.InputStreamReader;
import java.util.List;

import org.apache.commons.collections4.CollectionUtils;
import org.apache.commons.compress.utils.Lists;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpHeaders;
import org.springframework.http.MediaType;
import org.springframework.web.client.RestTemplate;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;

/**
 * 
 * @Description 读取文件
 * @Author wangymd
 * @Date 2021-11-23 10:46:07
 */
public class ReadCSVFile {

    @Autowired
    private static RestTemplate restTemplate;

    public static void main(String[] args) {
        String fileName = "D:\\dev\\tempFile\\143_20211119102853.csv";
        //读取excel
        List buildCsv = buildCsv(fileName);
               
        if(CollectionUtils.isNotEmpty(buildCsv)) {
            for (JSONObject json : buildCsv) {
                invokeHttp(json);
            }
        }
    }
    
    public static List buildCsv(String fileName) {
        try {
            //BufferedReader reader = new BufferedReader(new FileReader("D:\\dev\\tempFile\\143_20211119102853.csv"));//换成你的文件名
            BufferedReader reader = new BufferedReader(new InputStreamReader(new FileInputStream(fileName),"GBK"));//换成你的文件名UTF-8
            reader.readLine();//第一行信息，为标题信息，不用，如果需要，注释掉
            String line = null;
            List listJSONObject = Lists.newArrayList();
            while((line=reader.readLine())!=null){
                String item[] = line.split(",");//CSV格式文件为逗号分隔符文件，这里根据逗号切分
                String author = item[0];
                String taskId = item[1];
                String imgUrl = item[3];
                
                JSONObject json = new JSONObject();
                json.put("author", author);
                json.put("taskId", taskId);
                json.put("threshold", 0.2);
                json.put("imgUrl", "https://m.360buyimg.com/" + imgUrl);
                
                listJSONObject.add(json);
            }
            return listJSONObject;
        }catch (Exception e) {
            e.printStackTrace();
        }
        
        return null;
    }

    private static void invokeHttp(JSONObject json) {
        restTemplate = new RestTemplate();

        HttpHeaders headersUpload = new HttpHeaders();
        headersUpload.setContentType(MediaType.APPLICATION_JSON);
        JSONObject upload = restTemplate.postForObject("http://data.com/imgUrlCheck", json, JSONObject.class);

        System.out.println(JSON.toJSONString(upload));
    }
}