93 获取nginx配置，通过正则获取所有的域名

package com.taotao.banbenhao.config;

import java.io.*;
import java.text.ParseException;
import java.util.ArrayList;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class FileBytes {
 public static StringBuffer readFile(File file) throws IOException, ParseException {
        InputStreamReader read = null;//考虑到编码格式
        String lineTxt = null;
        StringBuffer sf = new StringBuffer();
        try {
  read = new InputStreamReader(new FileInputStream(file), "utf-8");
            BufferedReader bufferedReader = new BufferedReader(read);

            while ((lineTxt = bufferedReader.readLine()) != null) {
               lineTxt += bufferedReader.readLine();
                sf.append(lineTxt);
                //  System.out.println(lineTxt);
            }

            read.close();
            return sf;
        } catch (Exception e) {
            e.getCause();
   }
        return sf;
    }

  public static void main(String[] args) {
        File file = new File("D:\\works\\myfile\\gongju\\nginx-1.15.2\\conf\\all-servers\\test.conf");
        if (!file.exists()) {
            System.out.println("文件不存在!");
            return;
    
    }
        try {
            StringBuffer ym = readFile(file);

     //System.out.println(ym);

            // Pattern p = Pattern.compile("(?:com\\.cn|net\\.cn|org\\.cn|com|net|org|cn|biz|info|cc|tv)", Pattern.CASE_INSENSITIVE);

    Pattern p = Pattern.compile("server_name.*?;"); //以server_name开始 ;  结束
            Matcher m = p.matcher(ym);
            List<String> result = new ArrayList<String>();
            while (m.find()) {
                result.add(m.group(0));
          }

            for (String d : result) {
                d = d.replace("server_name", "");
                d = d.replace(";", "");
                System.out.print(d);
            }
    //   System.out.print(result.toString());


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