有一个文本文档，内容如下：
# Well known service port numbers -*- mode: fundamental; -*-
# From the Nmap security scanner ( http://www.insecure.org/nmap/ )
#
# $Id: nmap-services 6563 2007-12-19 01:26:32Z doug $
# For a HUGE list of services (including these and others),
# see http://www.graffiti.com/services
tcpmux 1/tcp # TCP Port Service Multiplexer [rfc-1078]
tcpmux 1/udp # TCP Port Service Multiplexer
compressnet 2/tcp # Management Utility
compressnet 2/udp # Management Utility
compressnet 3/tcp # Compression Process
compressnet 3/udp # Compression Process
rje 5/tcp # Remote Job Entry
echo 7/tcp #
echo 7/tcp #
我想把一些内容提取出来，输出格式如下：
服务：tcpmux
端口：1
注释：TCP Port Service Multiplexer [rfc-1078]
服务：compressnet
端口：2
注释：Management Utility
服务：compressnet
端口：3
注释：Compression Process
服务：rje
端口：5
注释：Remote Job Entry
服务：echo
端口：7
注释：
请问如何编程实现，希望能有源代码看一下，谢谢
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------解决方案--------------------
- Java code
public static void main(String[] args) throws Exception { FileReader read = new FileReader("f:/3.txt"); BufferedReader br = new BufferedReader(read); String readline; String temp=null; while((readline = br.readLine())!=null){ if(!row.startsWith("#")) { String[] str=readline.split("#",2); String[] str1=str[0].split(" ",2); String[] str2=str1[1].split("/"); if(str2[1].trim().equals("tcp")&&!row.equals(temp)) { System.out.println("服务:"+str1[0]); System.out.println("端口:"+str2[0].trim()); System.out.println("注释:"+str[1].trim()); System.out.println(); } } temp=readline; } }
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根据8楼的改了一下，这个结果应该是楼主想要的：
- Java code
import java.io.*;public class GetFile1 {public static void main(String[] args) throws Exception { FileReader read = new FileReader("f:/source.txt"); BufferedReader br = new BufferedReader(read); String readline; String temp=null; while((readline = br.readLine())!=null){ if(!readline.startsWith("#")) { String[] str=readline.split("#",2); String[] str1=str[0].split(" ",2); //tcpmux String[] str2=str1[1].split("/"); //1 System.out.println("服务:"+str1[0]); System.out.println("端口:"+str2[0].trim()); System.out.println("注释:"+str[1].trim()); System.out.println(); } temp=readline; } }}
------解决方案--------------------
学习正则表达式的实现
- Java code
import java.io.BufferedReader;import java.io.FileNotFoundException;import java.io.FileReader;import java.io.IOException;import java.util.regex.Matcher;import java.util.regex.Pattern;/** * 如何提取文本文档中的数据 * http://topic.csdn.net/u/20081229/15/df3b854c-ab74-405c-8830-bc6a5c016b23.html */public class TestTcp { public static void doFile(String fileName){ Pattern p=Pattern.compile("[^#]\\w*[ \t]*\\d+/tcp[ \t]*# [a-zA-Z0-9\\-\\[\\]]*"); Pattern p2=Pattern.compile("\\w*"); Pattern p3=Pattern.compile("\\d+/tcp"); Pattern p4=Pattern.compile("# [a-zA-Z0-9\\-\\[\\]]*");// Matcher m=p.matcher(test); BufferedReader reader=null; try { reader=new BufferedReader(new FileReader(fileName)); String line=null; while((line=reader.readLine())!=null){ Matcher m=p.matcher(line); if (m.find()){ m=p2.matcher(line); if (m.find()){ System.out.println("服务："+m.group()); } m=p3.matcher(line); if (m.find()){ String temp=m.group(); System.out.println("端口："+temp.substring(0,temp.lastIndexOf('/'))); } m=p4.matcher(line); if (m.find()){ String temp=m.group(); System.out.println("注释："+temp.substring(2)); } } } } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } finally{ if (reader!=null) try { reader.close(); } catch (IOException e) { e.printStackTrace(); } } } public static void main(String[] args) { doFile("d:/temp/testreg.txt"); }}