Jsoup parses html/obtains forum post information based on keywords

Taking the Forum broadband Mountain as an example, you need to obtain all posts about this keyword Based on the given keyword, including popularity, posting topic, reply count, publisher, posting time, and post link, detailed post text. The detailed code is as follows: Java code 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 {/*** query the information required by the Forum based on the KeyWord map * @ param KeyWord input KeyWord * @ 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> "). attr ("title"); postsOneMap. put ("postsFloor", childPost. select ("span. n4 "). first (). text (); postsOneMap. put ("postsCname", childPost. select (". bind_ho Ver_card "). first (). text (); postsOneMap. put ("postsCtime", childPost. select ("li> span. n6 "). first (). text (); postsOneMap. put ("postsUrl", "http://club.pchome.net" + childPost. select ("span. n3 "). attr ("href"); postsOneMap. put ("postsContents", getContentsByUrl ("http://club.pchome.net" + childPost. select ("span. n3 "). attr ("href"); postsList. add (postsOneMap) ;}} catch (Exception e) {e. printStackTrace ();} Return postsList ;} /*** obtain the post text content based on the Post url * @ param url the post path * @ 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 ("[left turn] [Right turn] [Source image]") {contents = contents. replace ("[Turn Left] [turn right] [Source image]", "") ;}} catch (Exception e) {e. printStackTrace ();} return contents;} public static void main (String [] args) throws Exception {List <Map <String, Object> postsList = KeyWordsSearchUtil. findByKeyW Ord ("movie"); System. out. println ("http://club.pchome.net/forum_1_15____md__1_" + java.net. URLEncoder. encode ("movie", "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) ;}} the above Code can successfully capture the list of posts related to movies in the broadband Mountain Forum. The main method has been tested and can pass the test if the network is smooth. However, the above Code is only used to complete functions and has poor performance. The project needs to be rewritten or optimized.