JAVA读取文件并替换文件中的内容

package control;

import org.junit.Test;

import java.io.*;
import java.text.ParseException;
import java.text.ParsePosition;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;


public class qwe {

    public static void main(String[] args)  {
        String fileName1 = "D:\\dingdingcunchu\\CRM数据.txt";
        String fileName2 = "D:\\dingdingcunchu\\CRM数据2.txt";

    }
    public static void haomiao(String fileName1,String fileName2) throws ParseException, IOException {

        BufferedReader br = new BufferedReader(new InputStreamReader(new FileInputStream(new File(fileName1))));
        BufferedWriter bufferedWriter = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(new File(fileName2))));
        String str = null;
        if (str.isEmpty() == false) {
            String[] split = str.split("\t");
            SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy/MM/dd HH:mm");
            Date date = simpleDateFormat.parse(split[1]);
            long time = date.getTime();
            String s = String.valueOf(time);
            bufferedWriter.write("{\"type\":\"profile_set\",\"distinct_id\":\""+split[0]+"\",\"properties\":{\"$is_login_id\":true,\"CrmCreateTime\":"+s+"}}" + "\r\n");
            bufferedWriter.flush();
        }
    }

    public static void quanbu(String fileName1,String fileName2) throws IOException {
        String str = null;
        //int count = 0;
        //读文件
        BufferedReader br = new BufferedReader(new InputStreamReader(new FileInputStream(new File(fileName1))));
        //写文件
        BufferedWriter bufferedWriter = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(new File(fileName2))));
        //读每行如果不为null
        while ((str = br.readLine()) != null) {
//              String replace = str.replace("\"type\":\"profile_set\"", "\"type\":\"profile_delete\"");
//             String replace = str.replace("name", "$name");
//              String replace = str.replace("signup_time","$signup_time");
//             String replace = str.replace("\"properties\":{","\"properties\":{\"$is_login_id\":true,");
            if (str.isEmpty() == false) {
                String[] split = str.split("\t");
                //String replace = str.replace(split[3],"\"time\":\"1628235549\"");
                //bufferedWriter.write("UPDATE Group_Department.Name_Group_Department_Five SET staff_department= '" + split[1] + "' and  staff_group = '" + split[2] + "'   WHERE staff_username = '" + split[0] + "'" + "\r\n");
                //bufferedWriter.write(replace + "\r\n");
                //刷新
                bufferedWriter.flush();
            }
//             bufferedWriter.write("INSERT INTO Group_Department.Name_Group_Department_Two VALUES ("+split[0]+","+split[1]+","+split[2]+","+split[3]+","+split[4]+");"+"\r\n");
            // String replace = str.replace("\"", "");

            //写进文件的内容
//            bufferedWriter.write(replace + "\r\n");
//           刷新
//            bufferedWriter.flush();
        }
//        while ((str = br.readLine())!=null){
//            boolean length = str.isEmpty();
//
//            if (length==true){
//                count++;
//            }
//        }
//        System.out.println(count);
    }
}