Java 具有身份验证的Crawler4j
为了测试的目的,我正在尝试在个人redmine中执行crawler4j。我想对应用程序中的几个深度级别进行身份验证和爬网 我遵循crawler4j的常见问题解答。并创建下一个代码段:Java 具有身份验证的Crawler4j,java,web-crawler,crawler4j,Java,Web Crawler,Crawler4j,为了测试的目的,我正在尝试在个人redmine中执行crawler4j。我想对应用程序中的几个深度级别进行身份验证和爬网 我遵循crawler4j的常见问题解答。并创建下一个代码段: import edu.uci.ics.crawler4j.crawler.Page; import edu.uci.ics.crawler4j.crawler.WebCrawler; import edu.uci.ics.crawler4j.parser.HtmlParseData; import edu.uci.
import edu.uci.ics.crawler4j.crawler.Page;
import edu.uci.ics.crawler4j.crawler.WebCrawler;
import edu.uci.ics.crawler4j.parser.HtmlParseData;
import edu.uci.ics.crawler4j.url.WebURL;
public class CustomWebCrawler extends WebCrawler{
@Override
public void visit(final Page pPage) {
if (pPage.getParseData() instanceof HtmlParseData) {
System.out.println("URL: " + pPage.getWebURL().getURL());
}
}
@Override
public boolean shouldVisit(final Page pPage, final WebURL pUrl) {
WebURL webUrl = new WebURL();
webUrl.setURL(Test.URL_LOGOUT);
if (pUrl.equals(webUrl)) {
return false;
}
if(Test.MY_REDMINE_HOST.equals(pUrl.getDomain())){
return true;
}
return false;
}
}
在这个类中,我从WebCrawler扩展而来,在每次访问中,只显示URL访问,检查URL是否在同一个域中,而不访问注销URL
我还有一个测试类来配置这个爬虫程序,带有身份验证信息和要爬网的站点
import org.apache.log4j.ConsoleAppender;
import org.apache.log4j.Level;
import org.apache.log4j.Logger;
import org.apache.log4j.PatternLayout;
import edu.uci.ics.crawler4j.crawler.CrawlConfig;
import edu.uci.ics.crawler4j.crawler.CrawlController;
import edu.uci.ics.crawler4j.crawler.authentication.AuthInfo;
import edu.uci.ics.crawler4j.crawler.authentication.BasicAuthInfo;
import edu.uci.ics.crawler4j.crawler.authentication.FormAuthInfo;
import edu.uci.ics.crawler4j.fetcher.PageFetcher;
import edu.uci.ics.crawler4j.robotstxt.RobotstxtConfig;
import edu.uci.ics.crawler4j.robotstxt.RobotstxtServer;
public class Test {
private static Logger rootLogger;
public final static String MY_REDMINE_HOST = "my-redmine-server";
public final static String URL_LOGOUT = "http://"+MY_REDMINE_HOST+"/redmine/logout";
public static void main(String[] args) throws Exception {
configureLogger();
// Create the configuration
CrawlConfig config = new CrawlConfig();
String frontier = "/tmp/webCrawler/tmp_" + System.currentTimeMillis();
config.setCrawlStorageFolder(frontier);
//Starting point to crawl
String seed = "http://"+MY_REDMINE_HOST+"/redmine/";
// Data for the authentication methods
String userName = "my-user";
String password = "my-passwd";
String urlLogin = "http://"+MY_REDMINE_HOST+"/redmine/login";
String nameUsername = "username";
String namePassword = "password";
AuthInfo authInfo1 = new FormAuthInfo(userName, password, urlLogin,
nameUsername, namePassword);
config.addAuthInfo(authInfo1);
AuthInfo authInfo2 = new BasicAuthInfo(userName, password, urlLogin);
config.addAuthInfo(authInfo2);
config.setMaxDepthOfCrawling(3);
PageFetcher pageFetcher = new PageFetcher(config);
RobotstxtConfig robotstxtConfig = new RobotstxtConfig();
RobotstxtServer robotstxtServer = new RobotstxtServer(robotstxtConfig,
pageFetcher);
CrawlController controller = new CrawlController(config, pageFetcher,
robotstxtServer);
controller.addSeed(seed);
controller.start(CustomWebCrawler.class, 5);
controller.shutdown();
}
private static void configureLogger() {
// This is the root logger provided by log4j
rootLogger = Logger.getRootLogger();
rootLogger.setLevel(Level.INFO);
// Define log pattern layout
PatternLayout layout = new PatternLayout(
"%d{ISO8601} [%t] %-5p %c %x - %m%n");
// Add console appender to root logger
if (!rootLogger.getAllAppenders().hasMoreElements()) {
rootLogger.addAppender(new ConsoleAppender(layout));
}
}
}
我希望登录应用程序并在站点的其余部分保持爬网,但我不能。爬网只访问起点中的链接
我不知道是少了什么还是出了什么问题。或者,我可能对爬网的当前配置有错误的方法。它是否进入登录页面?是否成功登录?日志对登录页面有何说明?此页面有任何更新吗?我也有同样的问题:我可以(根据日志记录)成功登录,但是我得到了错误的页面(我尝试了w/e.g.javaforum.org)。