??????????? 以论坛《宽带山》为例,需要根据给定的关键词,取得关于该关键词的所有帖子,包括人气数,发帖主题,回复数,发表人,发表时间,帖子链接,帖子详细文本内容等。
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??????????? 详细代码如下:
import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Map; import org.jsoup.Jsoup; import org.jsoup.nodes.Document; import org.jsoup.nodes.Element; import org.jsoup.select.Elements; public class KeyWordsSearchUtil { /** * 根据关键词查询论坛所需信息map * @param KeyWord 传入关键词 * @return */ public static List<Map<String, Object>> findByKeyWord(String KeyWord) { List<Map<String, Object>>postsList=new ArrayList<Map<String,Object>>(); Map<String, Object>postsOneMap=null; try { Document doc = Jsoup.connect("http://club.pchome.net/forum_1_15____md__1_"+java.net.URLEncoder.encode(KeyWord,"utf-8")+".html") .data("query", "Java") .userAgent("Mozilla") .cookie("auth", "token") .timeout(10000) .ignoreHttpErrors(true) .post(); Elements postsLs=doc.select("li.i2").not(".h-bg"); if (postsLs!=null&&postsLs.size()>0) { for (Element childPost : postsLs) { postsOneMap=new HashMap<String, Object>(); postsOneMap.put("postsPopularity", childPost.select("li > span.n2").first().text()); postsOneMap.put("postsTitle", childPost.select("span.n3 > a").attr("title")); postsOneMap.put("postsFloor", childPost.select("span.n4").first().text()); postsOneMap.put("postsCname", childPost.select("a.bind_hover_card").first().text()); postsOneMap.put("postsCtime", childPost.select("li > span.n6").first().text()); postsOneMap.put("postsUrl", "http://club.pchome.net"+childPost.select("span.n3 a").attr("href")); postsOneMap.put("postsContents", getContentsByUrl("http://club.pchome.net"+childPost.select("span.n3 a").attr("href"))); postsList.add(postsOneMap); } } } catch (Exception e) { e.printStackTrace(); } return postsList; } /** * 根据帖子的url获取帖子的文本内容 * @param url 帖子的路径 * @return */ public static String getContentsByUrl(String url) { String contents="11"; try { Document doc = Jsoup.connect(url) .data("query", "Java") .userAgent("Mozilla") .cookie("auth", "token") .timeout(10000) .ignoreHttpErrors(true) .post(); if(doc.select("div.mc").first()!=null){ Element contentsEle=doc.select("div.mc div").first(); contents=contentsEle.select("div").first().text(); if (contents.contains("[向左转]??[向右转]??[原图]")) { contents=contents.replace("[向左转]??[向右转]??[原图]", ""); } } } catch (Exception e) { e.printStackTrace(); } return contents; } public static void main(String[] args) throws Exception { List<Map<String, Object>>postsList=KeyWordsSearchUtil.findByKeyWord("电影"); System.out.println("http://club.pchome.net/forum_1_15____md__1_"+java.net.URLEncoder.encode("电影","utf-8")+".html"); System.out.println(postsList.size()+"/////"); for (int i = 0; i < postsList.size(); i++) { for(Map.Entry<String, Object>entry:postsList.get(i).entrySet()){ System.out.println("key="+entry.getKey()+"| value="+entry.getValue()); } System.out.println("-----------------"); } //http://club.pchome.net/thread_1_15_7519679.html // String str=getContentsByUrl("http://club.pchome.net/thread_1_15_7519679.html"); // System.out.println(str); } }
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??????????????????????????? 以上代码能成功抓取宽带山论坛中,关键词为:电影 的相关帖子列表,main方法中已有测试,网络畅通下可测试通过。但上面代码仅为完成功能,性能较差,项目中需重写或优化