从文件中读取规律数据到txt中

package com.cctv4g.mobilevideo.addtl.rest;


import java.io.*;

public class TxtTest {
    public static void readTxt(File file) throws IOException {
        String s = "";
        InputStreamReader in = new InputStreamReader(new FileInputStream(file), "UTF-8");
        BufferedReader br = new BufferedReader(in);
        StringBuffer content = new StringBuffer();
        while ((s = br.readLine()) != null) {
            //  System.out.println(s);
            if(s.indexOf("<?xml")>0 ){

                s=s.substring(s.indexOf("<?xml"));
                System.out.println(s.replace("\\x22","\"").replace("</SyncAppOrderReq>\"","</SyncAppOrderReq>"));

                writeFile(s.replace("\\x22","\"").replace("</SyncAppOrderReq>\"","</SyncAppOrderReq>"));
                //content = content.append(s);
            }



        }

    }

    public static void main(String[] args) {
        try {
//通过绝对路径获取文件
            TxtTest.readTxt(new File("/Users/XXXXXXX/fsdownload/access_2022-01-19.log"));

        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    public static void writeFile(String str)
    {
        File file = new File("/Users/XXXXX/fsdownload/222.txt");
        try {
            BufferedWriter bw=new BufferedWriter(new FileWriter(file,true));
            bw.write(str+"\r\n\r\n");
            bw.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}