本文共 3593 字，大约阅读时间需要 11 分钟。

1、文本的读取

/**     * 读取log或者txt信息     *     * @param filePath     * @return     */    private static List
   
     readLog(String filePath) {           List
    
      list = new ArrayList
     
      ();        try {               FileInputStream is = new FileInputStream(filePath);            InputStreamReader isr = new InputStreamReader(is);            BufferedReader br = new BufferedReader(isr);            String line;            try {                   while ((line = br.readLine()) != null) {                       if (line.equals(""))                        continue;                    else                        list.add(line);                }            } catch (IOException e) {                   e.printStackTrace();                System.out.println("读取一行数据时出错");            }        } catch (FileNotFoundException e) {               e.printStackTrace();            System.out.println("文件读取路径错误FileNotFoundException");        }        return list;    }
     
    
   

2、csv文件的生成

import java.io.BufferedWriter;import java.io.File;import java.io.FileOutputStream;import java.io.IOException;import java.io.OutputStreamWriter;import java.util.ArrayList;import java.util.List;/** * @author lizhangyu * @version 1.0 * @description * @date 2020/8/19 19:41 */public class CSVUtil {       /**     * CSV文件生成方法     * @param head     * @param dataList     * @param outPutPath     * @param filename     * @return     */    public static File createCSVFile(List