需求：類似如下的txt文件，現在需要把每一小段包含open的ip地址輸出，這樣他就可以去攻擊有用ip了，這孩子真壞，哈哈。

Nmap scan report for 123.59.68.48
Host is up (0.044s latency).
PORT ? STATE SERVICE
22/tcp open ?ssh


Nmap scan report for 123.59.68.49
Host is up (0.00023s latency).
PORT ? STATE ? ?SERVICE
22/tcp filtered ssh


Nmap scan report for 123.59.68.50
Host is up (0.027s latency).
PORT ? STATE SERVICE
22/tcp open ?ssh


Nmap scan report for 123.59.68.51
Host is up (0.00029s latency).
PORT ? STATE ? ?SERVICE
22/tcp filtered ssh


Nmap scan report for 123.59.68.52
Host is up (0.036s latency).
PORT ? STATE SERVICE
22/tcp open ?ssh


Nmap scan report for 123.59.68.53
Host is up (0.058s latency).
PORT ? STATE SERVICE
22/tcp open ?ssh


Nmap scan report for 123.59.68.54
Host is up (0.060s latency).
PORT ? STATE ? ?SERVICE
22/tcp filtered ssh


Nmap scan report for 123.59.68.55
Host is up (0.00028s latency).
PORT ? STATE ? ?SERVICE
22/tcp filtered ssh


Nmap scan report for 123.59.68.56
Host is up (0.030s latency).
PORT ? STATE SERVICE
22/tcp open ?ssh


Nmap scan report for 123.59.68.57
Host is up (0.19s latency).
PORT ? STATE ?SERVICE
22/tcp closed ssh


Nmap scan report for 123.59.68.58
Host is up (0.059s latency).
PORT ? STATE ? ?SERVICE
22/tcp filtered ssh


Nmap scan report for 123.59.68.59
Host is up (0.00037s latency).
PORT ? STATE ? ?SERVICE
22/tcp filtered ssh


Nmap scan report for 123.59.68.60
Host is up (0.00018s latency).
PORT ? STATE ? ?SERVICE
22/tcp filtered ssh


Nmap scan report for 123.59.68.61
Host is up (0.19s latency).
PORT ? STATE ?SERVICE
22/tcp closed ssh


Nmap scan report for 123.59.68.62
Host is up (0.18s latency).
PORT ? STATE ?SERVICE
22/tcp closed ssh


Nmap scan report for 123.59.68.63
Host is up (0.038s latency).
PORT ? STATE ? ?SERVICE
22/tcp filtered ssh


Nmap scan report for 123.59.68.64
Host is up (0.026s latency).
PORT ? STATE ? ?SERVICE
22/tcp filtered ssh


Nmap scan report for 123.59.68.65
Host is up (0.00023s latency).
PORT ? STATE ? ?SERVICE
22/tcp filtered ssh


Nmap scan report for 123.59.68.66
Host is up (0.00022s latency).
PORT ? STATE ? ?SERVICE
22/tcp filtered ssh


Nmap scan report for 123.59.68.67
Host is up (0.00011s latency).
PORT ? STATE ? ?SERVICE
22/tcp filtered ssh

......未完

實現方法：用java的BufferedReader類，一次只讀一行來操作，不多說了，直接上代碼

package com.hbut.test;


import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.util.Scanner;


import com.hbut.basetest.SingleTon;


@SuppressWarnings("unused")
public class Main {

@SuppressWarnings("resource")
public static void main(String[] args) throws IOException {


File file = new File("D:/host.txt");//Text文件

BufferedReader br = new BufferedReader(new FileReader(file));//構造一個BufferedReader類來讀取文件


String s = null;
String temp=null;

while((s = br.readLine())!=null){//使用readLine方法，一次讀一行
? ? if(s.contains("123")){
? ? temp=s;
? ? }
? ??
? ? if(s.contains("open")){
? ? System.out.println(temp);
? ? ?temp=null;
? ? }

}


}
? ? ?
}

讀取結果：

Nmap scan report for 123.59.68.48
Nmap scan report for 123.59.68.50
Nmap scan report for 123.59.68.52
Nmap scan report for 123.59.68.53
Nmap scan report for 123.59.68.56
Nmap scan report for 123.59.68.72
Nmap scan report for 123.59.68.76
Nmap scan report for 123.59.68.78
Nmap scan report for 123.59.68.79
Nmap scan report for 123.59.68.82
Nmap scan report for 123.59.68.89
Nmap scan report for 123.59.68.92
Nmap scan report for 123.59.68.93
Nmap scan report for 123.59.68.94
Nmap scan report for 123.59.68.95
Nmap scan report for 123.59.68.96
Nmap scan report for 123.59.68.98
Nmap scan report for 123.59.68.99
Nmap scan report for 123.59.68.101
Nmap scan report for 123.59.68.102
Nmap scan report for 123.59.68.103
Nmap scan report for 123.59.68.109
Nmap scan report for 123.59.68.110
Nmap scan report for 123.59.68.113
Nmap scan report for 123.59.68.124
Nmap scan report for 123.59.68.131
Nmap scan report for 123.59.68.132
Nmap scan report for 123.59.68.135
Nmap scan report for 123.59.68.136
Nmap scan report for 123.59.68.137
Nmap scan report for 123.59.68.139
Nmap scan report for 123.59.68.140
Nmap scan report for 123.59.68.142
Nmap scan report for 123.59.68.145
Nmap scan report for 123.59.68.146
Nmap scan report for 123.59.68.152
Nmap scan report for 123.59.68.153
Nmap scan report for 123.59.68.155
Nmap scan report for 123.59.68.156
Nmap scan report for 123.59.68.157
Nmap scan report for 123.59.68.158
Nmap scan report for 123.59.68.159
Nmap scan report for 123.59.68.163

.....

創作挑戰賽新人創作獎勵來咯，堅持創作打卡瓜分現金大獎

總結

以上是生活随笔為你收集整理的java对.txt文件进行读取方法实战---室友是网络安全方向，帮他提取文件里的特定ip的全部內容，希望文章能夠幫你解決所遇到的問題。

如果覺得生活随笔網站內容還不錯，歡迎將生活随笔推薦給好友。