Аутентификация на форуме phpBB

      package com.company;
        import java.net.Authenticator;
        import java.net.PasswordAuthentication;
 
public class Main extends Authenticator {
    private String host;
    private String username;
    private String password;
 
    public Main(String host, String username, String password) {
        super();
        this.host = "http://sysadmins.ru";
        this.username = "Megatron666";
        this.password = "123456";
    }
 
    protected PasswordAuthentication getPasswordAuthentication() {
        if(host.equals(getRequestingHost())) {
            return new PasswordAuthentication(username, password.toCharArray());
        } else {
            return super.getPasswordAuthentication();
        }
    }
}

 try (CloseableHttpClient httpClient = HttpClientBuilder.create().setDefaultCookieStore(cookieStore).build()) {
 
            URI uri = new URIBuilder()
                    .setScheme(SCHEME)
                    .setHost(HOST)
                    .setPath("/posting.php?mode=delete&p=13368470&sid=e************3700e3 ")
                    .build();
 
 
            HttpPost httpPost = new HttpPost(uri);
 
            List<NameValuePair> nvps = new ArrayList<>();
            nvps.add(new BasicNameValuePair("p","13368470"));
            nvps.add(new BasicNameValuePair("mode", "delete"));
            nvps.add(new BasicNameValuePair("confirm","%C4%E0"));
            httpPost.setEntity(new UrlEncodedFormEntity(nvps));
 
            try (CloseableHttpResponse response = httpClient.execute(httpPost)) {
                HttpEntity entity = response.getEntity();
                EntityUtils.consume(entity);
            }
        }
 
 
        ////////////////////////////////////////// вывод хтмл
 
        try (CloseableHttpClient httpClient = HttpClients.createDefault()) {
            URI uri = new URIBuilder()
                    .setScheme(SCHEME)
                    .setHost(HOST)
                    .setPath("/posting.php").build();
            System.out.println(uri);
            HttpGet httpGet = new HttpGet(uri);
 
            try (CloseableHttpResponse response = httpClient.execute(httpGet)) {
 
                try (BufferedReader br = new BufferedReader(
                        new InputStreamReader((response.getEntity().getContent()), "windows-1251"))) {
                    String output;
                    while ((output = br.readLine()) != null) {
                        System.out.println(output);
                    }
                }
            }
        }
 
//p=13368467&mode=delete&confirm=%C4%E0

package com.company;
import org.apache.http.HttpEntity;
import org.apache.http.NameValuePair;
import org.apache.http.client.CookieStore;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.utils.URIBuilder;
import org.apache.http.cookie.Cookie;
import org.apache.http.impl.client.BasicCookieStore;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClientBuilder;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;
 
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.URI;
import java.net.URISyntaxException;
import java.util.ArrayList;
import java.util.List;
 
public class Main {
 
   private static final String SCHEME = "http";
    private static final String HOST = "*********.ru/login.php";
    private static final String USERNAME = "Megatron666";
    private static final String PASSWORD = "123456";
    private static final String LOGIN = "%C2%F5%EE%E4";
 
    public static void main(String[] args) throws IOException, URISyntaxException {
 
        CookieStore cookieStore = new BasicCookieStore();
        String sid = null;
 
        try (CloseableHttpClient httpClient = HttpClientBuilder.create().setDefaultCookieStore(cookieStore).build()) {
 
        URI uri = new URIBuilder()
   .setScheme(SCHEME)
    .setHost(HOST)
    .build();
        HttpPost httpPost = new HttpPost(uri);
System.out.print("uri1 "); System.out.println(uri);
 
       List<NameValuePair> nvps = new ArrayList<>();
        nvps.add(new BasicNameValuePair("username", USERNAME));
        nvps.add(new BasicNameValuePair("password", PASSWORD));
        nvps.add(new BasicNameValuePair("login", LOGIN));
 
System.out.print("nvps ");System.out.println(nvps);
         httpPost.setEntity(new UrlEncodedFormEntity(nvps));// отправка пар на uri1
 
 
try (CloseableHttpResponse response = httpClient.execute(httpPost)) {//магия
    HttpEntity entity = response.getEntity();
    EntityUtils.consume(entity);
}
        }
/////////////
        List<Cookie> cookies = cookieStore.getCookies();
        for (Cookie cookie : cookies) {
if (cookie.getName().equals("sysadminsnew_sid")) {
    sid = cookie.getValue();        // вытаскивание сида из куки
    break;
}
        }
        System.out.print("sid "); System.out.println(sid);
////////////
 
        try (CloseableHttpClient httpClient = HttpClients.createDefault()) {
        URI uri = new URIBuilder()  //сборка ссылки
        .setScheme(SCHEME)
        .setHost(HOST)
        .setParameter("sid", sid).build();
System.out.print("uri2 ");System.out.println(uri);
 
boolean flag=true;
HttpGet httpGet = new HttpGet(uri);// отправка uri2
 
try (CloseableHttpResponse response = httpClient.execute(httpGet)) {
    try (BufferedReader br = new BufferedReader(
new InputStreamReader((response.getEntity().getContent()), "windows-1251"))) {
        String output;
        while ((output = br.readLine()) != null) {    //чтение хтмл
if((output.indexOf(USERNAME) != -1 )&& (flag == true))//поиск ника в считываемых строках
{   flag=false;
    System.out.println("Вход выполнен"); }
        }
    }
}
        }//конец сборки - проверки
 
////////////
        try (CloseableHttpClient httpClient = HttpClients.createDefault()) {
URI uri = new URIBuilder()  //сборка ссылки
        .setScheme(SCHEME)
        .setHost("********.ru/search.php?search_author=Megatron666")
        .build();
System.out.print("uri3 ");System.out.println(uri);
 
HttpGet httpGet = new HttpGet(uri);// отправка uri3
try (CloseableHttpResponse response = httpClient.execute(httpGet)) {
    try (BufferedReader br = new BufferedReader(
new InputStreamReader((response.getEntity().getContent()), "windows-1251"))) {
        String output;
        while ((output = br.readLine()) != null) {    //чтение хтмл
 
    System.out.println(output);
        }
    }
}
        }//конец списка тем
    }
}

HttpClients.createDefault()

HttpClientBuilder.create().setDefaultCookieStore(cookieStore).build()