[英]Jsoup multiple connections - using already parsed element for URL
這是我的PocetnaFragment.java:
package gimbi.edu.ba;
import java.util.ArrayList;
import java.util.HashMap;
import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;
import org.jsoup.nodes.Element;
import org.jsoup.select.Elements;
import android.app.Fragment;
import android.content.Context;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.os.AsyncTask;
import android.os.Bundle;
import android.app.ProgressDialog;
import android.os.Handler;
import android.support.v4.widget.SwipeRefreshLayout;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ListView;
import com.nhaarman.listviewanimations.appearance.AnimationAdapter;
import com.nhaarman.listviewanimations.appearance.simple.SwingBottomInAnimationAdapter;
import com.nispok.snackbar.Snackbar;
import com.software.shell.fab.ActionButton;
public class PocetnaFragment extends Fragment {
ListView listview;
ListViewAdapter adapter;
ProgressDialog mProgressDialog;
ArrayList<HashMap<String, String>> arraylist;
static String SEKCIJA = "sekcija";
static String NASLOV = "naslov";
static String LINK = "link";
static String SLIKA = "slika";
// URL Address
String url = "http://gimnazijabihac.edu.ba";
private SwipeRefreshLayout swipeView;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View view = inflater.inflate(R.layout.fragment_pocetna, container, false);
listview = (ListView) view.findViewById(R.id.pocetna_listview);
ActionButton actionButton = (ActionButton) view.findViewById(R.id.action_button);
actionButton.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
if(!isNetworkAvailable(getActivity())) {
Snackbar.with(getActivity()) // context
.text("Neuspjela konekcija.") // text to display
.duration(Snackbar.SnackbarDuration.LENGTH_LONG) // make it shorter
.show(getActivity()); // activity where it is displayed
} else {
new JsoupListView().execute();
}
}
});
swipeView = (SwipeRefreshLayout) view.findViewById(R.id.pocetna_swipe);
swipeView.setColorScheme(android.R.color.holo_blue_dark, android.R.color.holo_blue_light, android.R.color.holo_green_light, android.R.color.holo_green_light);
swipeView.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
@Override
public void onRefresh() {
swipeView.setRefreshing(true);
(new Handler()).postDelayed(new Runnable() {
@Override
public void run() {
new JsoupListView().execute();
swipeView.setRefreshing(false);
}
}, 500);
}
});
if(!isNetworkAvailable(getActivity())) {
Snackbar.with(getActivity()) // context
.text("Neuspjela konekcija.") // text to display
.duration(Snackbar.SnackbarDuration.LENGTH_LONG) // make it shorter
.show(getActivity()); // activity where it is displayed
}
new JsoupListView().execute();
return view;
}
public boolean isNetworkAvailable(Context context) {
ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo netinfo = cm.getActiveNetworkInfo();
if (netinfo != null && netinfo.isConnectedOrConnecting()) {
android.net.NetworkInfo wifi = cm.getNetworkInfo(ConnectivityManager.TYPE_WIFI);
android.net.NetworkInfo mobile = cm.getNetworkInfo(ConnectivityManager.TYPE_MOBILE);
if((mobile != null && mobile.isConnectedOrConnecting()) || (wifi != null && wifi.isConnectedOrConnecting())) return true;
else return false;
} else
return false;
}
// Title AsyncTask
private class JsoupListView extends AsyncTask<Void, Void, Void> {
@Override
protected void onPreExecute() {
super.onPreExecute();
mProgressDialog = new ProgressDialog(getActivity(), ProgressDialog.THEME_HOLO_LIGHT);
mProgressDialog.setMessage("Učitavanje..");
mProgressDialog.setIndeterminate(false);
mProgressDialog.show();
}
@Override
protected Void doInBackground(Void... params) {
arraylist = new ArrayList<HashMap<String, String>>();
Elements aEles = null;
Elements divRightPostEles = null;
String rightNaslov = null;
Document doc = null;
try {
doc = Jsoup.connect(url).get();
/** Get A tag that is under DIV with classname right_naslov **/
aEles = doc.select("div.right_naslov > a");
if (aEles != null && aEles.size() > 0) {
if (aEles.size() == 2)
rightNaslov = aEles.get(1).ownText();
else
rightNaslov = aEles.first().ownText();
}
/**
* Since you say there are multiple DIV with right_post as
* classname, we will get all those right post elements and loop
* them one by one to retrieve its inner elements
**/
divRightPostEles = doc.select("div.right_post");
for (Element rightPostDiv : divRightPostEles) {
/** Each loop of this represents a right_post DIV element **/
HashMap<String, String> map = new HashMap<String, String>();
/**
* Get Font tag with [classname=nadnaslov] under
* span[classname=right_post_nadnaslov] under
* div[lassname=right_post]
**/
/** Try to get Font[classname=naslov] with the following method **/
Elements fontNadnaslov = rightPostDiv
.select("span.right_post_nadnaslov > font.nadnaslov");
/**
* Get A tag that is under div[classname=right_post_tekst] under
* div[classname=right_post]
**/
Element aRightPostTekst = rightPostDiv.select(
"div.right_post_tekst > a[href]").first();
// Retrive Jsoup Elements
if (fontNadnaslov != null && fontNadnaslov.size() > 0) {
map.put("naslov", fontNadnaslov.first().ownText());
if (aRightPostTekst != null) {
map.put("link", aRightPostTekst.attr("href"));
Element img = aRightPostTekst.select("img[src]").first();
if (img != null)
map.put("slika", "http://gimnazijabihac.edu.ba/" + img.attr("src"));
}
if (rightNaslov != null)
map.put("sekcija", rightNaslov);
// Set all extracted Jsoup Elements into the array
arraylist.add(map);
}
}
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
@Override
protected void onPostExecute(Void result) {
// Pass the results into ListViewAdapter.java
adapter = new ListViewAdapter(getActivity(), arraylist);
AnimationAdapter animationAdapter = new SwingBottomInAnimationAdapter(adapter);
animationAdapter.setAbsListView(listview);
// Set the adapter to the ListView
listview.setAdapter(animationAdapter);
// Close the progressdialog
mProgressDialog.dismiss();
}
}
}
像往常一樣,我正在AsyncTask中使用jsoup解析一些數據。 現在,我需要解析另一個包含元素或w / e的URL,例如aRightPostTekst.attr("href")
。
我可以在同一個asynctask中執行此操作,還是應該重新創建一個?
基本上,我需要我的網址是:
"http://url.com/" + aRightPostTekst.attr("href")
然后,我應該解析其他一些元素並放入arraylist中,然后再使用它。
是否有可能,例如多個連接並為URL使用元素?
我正在從以下網站進行解析: http://gimnazijabihac.edu.ba/
: /e-novine/n/?id=340
,並且正在解析異步任務中的href標記,例如: /e-novine/n/?id=340
,然后完整網址是: http://gimnazijabihac.edu.ba/e-novine/n/?id=340
: http://gimnazijabihac.edu.ba/e-novine/n/?id=340
id= http://gimnazijabihac.edu.ba/e-novine/n/?id=340
我應該從該特定網站解析html。
提前致謝。
您需要分別解析每個URL,但是您應該能夠在一個線程中進行解析(我不是Android開發人員,因此我認為AsyncTask與Thread類似)。
也代替
"http://url.com/" + aRightPostTekst.attr("href")
您可以使用
aRightPostTekst.attr("abs:href")
得到href
以絕對路徑( http://server/context/href
),而不是相對的。
您可以解析兩個URL,但是必須分別為每個URL創建一個連接,並為每個不同的URL創建一個文檔並進行相應的解析。
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