/**
*
* APDPlat - Application Product Development Platform Copyright (c) 2013, 杨尚川,
* yang-shangchuan@qq.com
*
* This program is free software: you can redistribute it and/or modify it under
* the terms of the GNU General Public License as published by the Free Software
* Foundation, either version 3 of the License, or (at your option) any later
* version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License along with
* this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
package org.seo.rank.tools;
import org.jsoup.Connection;
import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
/**
*
* 自动更改IP地址反爬虫封锁，支持多线程
*
* ADSL拨号上网使用动态IP地址，每一次拨号得到的IP都不一样
*
* 使用腾达300M无线路由器，型号：N302 v2
* 路由器设置中最好设置一下：上网设置 -》请根据需要选择连接模式 -》手动连接，由用户手动进行连接。
* 其他的路由器使用方法类似，参照本类替换相应的登录地址、断开连接及建立连接地址即可
*
* @author 杨尚川
*/
public class DynamicIp {
private DynamicIp(){}
private static final Logger LOGGER = LoggerFactory.getLogger(DynamicIp.class);
private static final String ACCEPT = "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8";
private static final String ENCODING = "gzip, deflate";
private static final String LANGUAGE = "zh-cn,zh;q=0.8,en-us;q=0.5,en;q=0.3";
private static final String CONNECTION = "keep-alive";
private static final String HOST = "192.168.0.1";
private static final String REFERER = "http://192.168.0.1/login.asp";
private static final String USER_AGENT = "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.10; rv:36.0) Gecko/20100101 Firefox/36.0";
private static volatile boolean isDialing = false;
private static volatile long lastDialTime = 0l;
public static void main(String[] args) {
toNewIp();
}
/**
* 假设有10个线程在跑，大家都正常的跑，跑着跑着达到限制了，
* 于是大家争先恐后（几乎是同时）请求拨号，
* 这个时候同步的作用就显示出来了，只会有一个线程能拨号，
* 在他结束之前其他线程都在等，等他拨号成功之后，
* 其他线程会被唤醒并返回
*
* 算法描述：
* 1、假设总共有N个线程抓取网页，发现被封锁之后依次排队请求锁，注意：可以想象成是同时请求。
* 2、线程1抢先获得锁，并且设置isDialing = true后开始拨号，注意：线程1设置isDialing = true后其他线程才可能获得锁。
* 3、其他线程（2-N）依次获得锁，发现isDialing = true，于是wait。注意：获得锁并判断一个布尔值，跟后面的拨号操作比起来，时间可以忽略。
* 4、线程1拨号完毕isDialing = false。注意：这个时候可以断定，其他所有线程必定是处于wait状态等待唤醒。
* 5、线程1唤醒其他线程，其他线程和线程1返回开始抓取网页。
* 6、抓了一会儿之后，又会被封锁，于是回到步骤1。
* 注意：在本场景中，3和4的断定是没问题的，就算是出现“不可能”的情况，
* 即线程1已经拨号完成了，可2-N还没获得锁（汗），也不会重复拨号的情况，
* 因为算法考虑了请求拨号时间和上一次成功拨号时间。
* @return 更改IP是否成功
*/
public static boolean toNewIp() {
long requestDialTime = System.currentTimeMillis();
LOGGER.info(Thread.currentThread()+"请求重新拨号");
synchronized (DynamicIp.class) {
if (isDialing) {
LOGGER.info(Thread.currentThread()+"已经有其他线程在进行拨号了，我睡觉等待吧，其他线程拨号完毕会叫醒我的");
try {
DynamicIp.class.wait();
} catch (InterruptedException e) {
LOGGER.error(e.getMessage(), e);
}
LOGGER.info(Thread.currentThread()+"其他线程已经拨完号了，我可以返回了");
return true;
}
isDialing = true;
}
//保险起见，这里再判断一下
//如果请求拨号的时间小于上次成功拨号的时间，则说明这个请求来的【太迟了】，则返回。
if(requestDialTime <= lastDialTime){
LOGGER.info("请求来的太迟了");
isDialing = false;
return true;
}
LOGGER.info(Thread.currentThread()+"开始重新拨号");
long start = System.currentTimeMillis();
Map<String, String> cookies = login("username***", "password***", "phonenumber***");
if("true".equals(cookies.get("success"))) {
LOGGER.info(Thread.currentThread()+"登陆成功");
cookies.remove("success");
while (!disConnect(cookies)) {
LOGGER.info(Thread.currentThread()+"断开连接失败，重试！");
}
LOGGER.info(Thread.currentThread()+"断开连接成功");
while (!connect(cookies)) {
LOGGER.info(Thread.currentThread()+"建立连接失败，重试！");
}
LOGGER.info(Thread.currentThread()+"建立连接成功");
LOGGER.info(Thread.currentThread()+"自动更改IP地址成功！");
LOGGER.info(Thread.currentThread()+"拨号耗时："+(System.currentTimeMillis()-start)+"毫秒");
//通知其他线程结束等待
synchronized (DynamicIp.class) {
DynamicIp.class.notifyAll();
}
isDialing = false;
lastDialTime = System.currentTimeMillis();
return true;
}
LOGGER.info(Thread.currentThread()+"登陆无线路由器失败，检查用户名和密码！");
//通知其他线程结束等待
synchronized (DynamicIp.class) {
DynamicIp.class.notifyAll();
}
isDialing = false;
return false;
}
public static boolean connect(Map<String, String> cookies){
return execute(cookies, "3");
}
public static boolean disConnect(Map<String, String> cookies){
return execute(cookies, "4");
}
public static boolean execute(Map<String, String> cookies, String action){
String url = "http://192.168.0.1/goform/SysStatusHandle";
Map<String, String> map = new HashMap<>();
map.put("action", action);
map.put("CMD", "WAN_CON");
map.put("GO", "system_status.asp");
Connection conn = Jsoup.connect(url)
.header("Accept", ACCEPT)
.header("Accept-Encoding", ENCODING)
.header("Accept-Language", LANGUAGE)
.header("Connection", CONNECTION)
.header("Host", HOST)
.header("Referer", REFERER)
.header("User-Agent", USER_AGENT)
.ignoreContentType(true)
.timeout(30000);
for(String cookie : cookies.keySet()){
conn.cookie(cookie, cookies.get(cookie));
}
String title = null;
try {
Connection.Response response = conn.method(Connection.Method.POST).data(map).execute();
String html = response.body();
Document doc = Jsoup.parse(html);
title = doc.title();
LOGGER.info("操作连接页面标题："+title);
Thread.sleep(10000);
}catch (Exception e){
LOGGER.error(e.getMessage());
}
if("LAN | LAN Settings".equals(title)){
if(("3".equals(action) && isConnected())
|| ("4".equals(action) && !isConnected())){
return true;
}
}
return false;
}
public static boolean isConnected(){
try {
Document doc = Jsoup.connect("http://www.baidu.com/s?wd=杨尚川&t=" + System.currentTimeMillis())
.header("Accept", ACCEPT)
.header("Accept-Encoding", ENCODING)
.header("Accept-Language", LANGUAGE)
.header("Connection", CONNECTION)
.header("Referer", "https://www.baidu.com")
.header("Host", "www.baidu.com")
.header("User-Agent", USER_AGENT)
.ignoreContentType(true)
.timeout(30000)
.get();
LOGGER.info("搜索结果页面标题："+doc.title());
if(doc.title() != null && doc.title().contains("杨尚川")){
return true;
}
}catch (Exception e){
if("Network is unreachable".equals(e.getMessage())){
return false;
}else{
LOGGER.error("状态检查失败:"+e.getMessage());
}
}
return false;
}
public static Map<String, String> login(String userName, String password, String verify){
try {
Map<String, String> map = new HashMap<>();
map.put("Username", userName);
map.put("Password", password);
map.put("checkEn", "0");
Connection conn = Jsoup.connect("http://192.168.0.1/LoginCheck")
.header("Accept", ACCEPT)
.header("Accept-Encoding", ENCODING)
.header("Accept-Language", LANGUAGE)
.header("Connection", CONNECTION)
.header("Referer", REFERER)
.header("Host", HOST)
.header("User-Agent", USER_AGENT)
.ignoreContentType(true)
.timeout(30000);
Connection.Response response = conn.method(Connection.Method.POST).data(map).execute();
String html = response.body();
Document doc = Jsoup.parse(html);
LOGGER.info("登陆页面标题："+doc.title());
Map<String, String> cookies = response.cookies();
if(html.contains(verify)){
cookies.put("success", Boolean.TRUE.toString());
}
LOGGER.info("*******************************************************cookies start:");
cookies.keySet().stream().forEach((cookie) -> {
LOGGER.info(cookie + ":" + cookies.get(cookie));
});
LOGGER.info("*******************************************************cookies end:");
return cookies;
}catch (Exception e){
LOGGER.error(e.getMessage(), e);
}
return Collections.emptyMap();
}
}