import crawlercommons.robots.SimpleRobotRulesParser; //导入依赖的package包/类
public static void parseRobotsTxt(String userAgent, String robotsUrl, String robotsTxt, HtmlAnalysisResult result) {
    result.setRobotsTxt(robotsTxt);
    SimpleRobotRulesParser robotsParser = new SimpleRobotRulesParser();
    BaseRobotRules robotRules = robotsParser.parseContent(robotsUrl, robotsTxt.getBytes(), null, userAgent);
    result.setRobotsAllowedAll(robotRules.isAllowAll());
    result.setRobotsAllowedNone(robotRules.isAllowNone());
    result.setRobotsAllowedHome(robotRules.isAllowed("/"));
    result.setRobotsSitemaps(robotRules.getSitemaps());
    result.setRobotsCrawlDelay(robotRules.getCrawlDelay());
}
 

import crawlercommons.robots.SimpleRobotRulesParser; //导入依赖的package包/类
public RobotsManagerImpl(BaseHttpFetcher fetcher) {
    this(fetcher, new SimpleRobotRulesParser());
}