java正则匹配读取txt文件提取特定开头和结尾的字符串

new FileInputStrem("文件路径")  

InputStreamReader(file,"UTF-8");

        while ((line = br.readLine()) != null) {
            System.out.println(getPatternCode(line,rgex));
        }

String rgex = "\\(0x\\)(.*?)\"";

Pattern pattern = Pattern.compile(rgex);

Matcher m = pattern.matcher(string);

m.find()

m.group(1);

package fileOperation;

import java.io.*;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

/**
 * @program: solution
 * @description: 读取文件 利用正则表达式筛选数据
 * @author: Wang Hai Xin
 * @create: 2022-10-24 18:52
 **/
public class txtFiltration {

    public static void main(String[] args) throws IOException {
        /**/
        FileInputStream file = new FileInputStream("C:\\project\\solution\\src\\main\\java\\fileOperation\\djk-Log 2022-10-21 17_48_06.txt");
        /*指定文件类型*/
        InputStreamReader isr = new InputStreamReader(file, "UTF-8");

        BufferedReader br = new BufferedReader(isr);

        /*匹配规则*/
        String rgex = "\\(0x\\)(.*?)\"";

        String line = null;
        while ((line = br.readLine()) != null) {
            System.out.println(getPatternCode(line,rgex));
        }
    }
    
    public static String getPatternCode(String string, String rgex){
        // 匹配的模式
        Pattern pattern = Pattern.compile(rgex);
        Matcher m = pattern.matcher(string);
        while (m.find()) {
            return m.group(1);
        }
        return null;
    }
}