Java tutorial
/** * Copyright (C) 2014 by Johan von Forstner under the MIT license: * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the Software * is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER * DEALINGS IN THE SOFTWARE. */ package de.geeksfactory.opacclient.apis; import org.apache.http.NameValuePair; import org.apache.http.message.BasicNameValuePair; import org.json.JSONArray; import org.json.JSONException; import org.json.JSONObject; import org.jsoup.Jsoup; import org.jsoup.nodes.Document; import org.jsoup.nodes.Element; import org.jsoup.select.Elements; import java.io.IOException; import java.io.UnsupportedEncodingException; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Set; import de.geeksfactory.opacclient.i18n.StringProvider; import de.geeksfactory.opacclient.networking.HttpClientFactory; import de.geeksfactory.opacclient.objects.Account; import de.geeksfactory.opacclient.objects.AccountData; import de.geeksfactory.opacclient.objects.Copy; import de.geeksfactory.opacclient.objects.Detail; import de.geeksfactory.opacclient.objects.DetailledItem; import de.geeksfactory.opacclient.objects.Filter; import de.geeksfactory.opacclient.objects.Filter.Option; import de.geeksfactory.opacclient.objects.Library; import de.geeksfactory.opacclient.objects.SearchRequestResult; import de.geeksfactory.opacclient.objects.SearchResult; import de.geeksfactory.opacclient.objects.SearchResult.MediaType; import de.geeksfactory.opacclient.searchfields.DropdownSearchField; import de.geeksfactory.opacclient.searchfields.SearchField; import de.geeksfactory.opacclient.searchfields.SearchQuery; import de.geeksfactory.opacclient.searchfields.TextSearchField; /** * @author Johan von Forstner, 06.04.2014 * * WebOPAC.net, Version 2.2.70 gestartet mit Gemeindebibliothek Nrensdorf (erstes * Google-Suchergebnis) * * Untersttzt bisher nur Katalogsuche, Accountunterstzung knnte (wenn keine Kontodaten * verfgbar sind) ber den Javascript-Code reverse-engineered werden: * http://www.winmedio.net/nuerensdorf/de/mobile/GetScript.ashx?id=mobile.de.min.js&v=20140122 */ /* weitere kompatible Bibliotheken: https://www.google.de/search?q=webOpac.net%202.1.30%20powered%20by%20winMedio.net&qscrl=1#q=%22webOpac.net+2.2.70+powered+by+winMedio.net%22+inurl%3Awinmedio&qscrl=1&start=0 */ public class WebOpacNet extends BaseApi implements OpacApi { protected static HashMap<String, MediaType> defaulttypes = new HashMap<>(); static { defaulttypes.put("1", MediaType.BOOK); defaulttypes.put("2", MediaType.CD_MUSIC); defaulttypes.put("3", MediaType.AUDIOBOOK); defaulttypes.put("4", MediaType.DVD); defaulttypes.put("5", MediaType.CD_SOFTWARE); defaulttypes.put("8", MediaType.MAGAZINE); } protected String opac_url = ""; protected JSONObject data; protected List<SearchQuery> query; @Override public void init(Library lib, HttpClientFactory httpClientFactory) { super.init(lib, httpClientFactory); this.data = lib.getData(); try { this.opac_url = data.getString("baseurl"); } catch (JSONException e) { throw new RuntimeException(e); } } @Override public SearchRequestResult search(List<SearchQuery> query) throws IOException, OpacErrorException, JSONException { this.query = query; List<NameValuePair> params = new ArrayList<>(); start(); int index = buildParams(query, params, 1); if (index == 0) { throw new OpacErrorException(stringProvider.getString(StringProvider.NO_CRITERIA_INPUT)); } String json = httpGet(opac_url + "/de/mobile/GetMedien.ashx" + buildHttpGetParams(params), getDefaultEncoding()); return parse_search(json, 1); } protected int addParameters(SearchQuery query, StringBuilder params, int index) { if (query.getValue().equals("")) { return index; } if (index > 0) { params.append("$0"); } params.append("|").append(query.getKey()).append("|").append(query.getValue()); return index + 1; } private SearchRequestResult parse_search(String text, int page) throws OpacErrorException { if (!text.equals("")) { try { List<SearchResult> results = new ArrayList<>(); JSONObject json = new JSONObject(text); int total_result_count = Integer.parseInt(json.getString("totalcount")); JSONArray resultList = json.getJSONArray("mobmeds"); for (int i = 0; i < resultList.length(); i++) { JSONObject resultJson = resultList.getJSONObject(i); SearchResult result = new SearchResult(); result.setId(resultJson.getString("medid")); String title = resultJson.getString("titel"); String publisher = resultJson.getString("verlag"); String series = resultJson.getString("reihe"); String html = "<b>" + title + "</b><br />" + publisher + ", " + series; String type = resultJson.getString("iconurl").substring(12, 13); result.setType(defaulttypes.get(type)); result.setInnerhtml(html); if (resultJson.getString("imageurl").length() > 0) { result.setCover(resultJson.getString("imageurl")); } results.add(result); } return new SearchRequestResult(results, total_result_count, page); } catch (JSONException e) { e.printStackTrace(); throw new OpacErrorException(stringProvider .getFormattedString(StringProvider.INTERNAL_ERROR_WITH_DESCRIPTION, e.getMessage())); } } else { return new SearchRequestResult(new ArrayList<SearchResult>(), 0, page); } } @Override public SearchRequestResult filterResults(Filter filter, Option option) throws IOException, OpacErrorException { // TODO Auto-generated method stub return null; } @Override public SearchRequestResult searchGetPage(int page) throws IOException, OpacErrorException, JSONException { List<NameValuePair> params = new ArrayList<>(); start(); int index = buildParams(query, params, page); if (index == 0) { throw new OpacErrorException(stringProvider.getString(StringProvider.NO_CRITERIA_INPUT)); } String json = httpGet(opac_url + "/de/mobile/GetMedien.ashx" + buildHttpGetParams(params), getDefaultEncoding()); return parse_search(json, page); } private int buildParams(List<SearchQuery> queryList, List<NameValuePair> params, int page) throws JSONException { int index = 0; StringBuilder queries = new StringBuilder(); queries.append("erw:0"); for (SearchQuery query : queryList) { if (!query.getSearchField().getData().getBoolean("filter")) { index = addParameters(query, queries, index); } } for (SearchQuery query : queryList) { if (query.getSearchField().getData().getBoolean("filter") && !query.getValue().equals("")) { queries.append("&").append(query.getKey()).append("=").append(query.getValue()); } } params.add(new BasicNameValuePair("q", queries.toString())); params.add(new BasicNameValuePair("p", String.valueOf(page - 1))); params.add(new BasicNameValuePair("t", "1")); return index; } @Override public DetailledItem getResultById(String id, String homebranch) throws IOException, OpacErrorException { List<NameValuePair> params = new ArrayList<>(); params.add(new BasicNameValuePair("id", id)); params.add(new BasicNameValuePair("orientation", "1")); String json = httpGet(opac_url + "/de/mobile/GetDetail.ashx" + buildHttpGetParams(params), getDefaultEncoding()); return parse_detail(json); } private DetailledItem parse_detail(String text) throws OpacErrorException { try { DetailledItem result = new DetailledItem(); JSONObject json = new JSONObject(text); result.setTitle(json.getString("titel")); result.setCover(json.getString("imageurl")); result.setId(json.getString("medid")); // Details JSONArray info = json.getJSONArray("medium"); for (int i = 0; i < info.length(); i++) { JSONObject detailJson = info.getJSONObject(i); String name = detailJson.getString("bez"); String value = ""; JSONArray values = detailJson.getJSONArray("values"); for (int j = 0; j < values.length(); j++) { JSONObject valJson = values.getJSONObject(j); if (j != 0) { value += ", "; } String content = valJson.getString("dval"); content = content.replaceAll("<span[^>]*>", ""); content = content.replaceAll("</span>", ""); value += content; } Detail detail = new Detail(name, value); result.addDetail(detail); } // Copies JSONArray copies = json.getJSONArray("exemplare"); for (int i = 0; i < copies.length(); i++) { JSONObject copyJson = copies.getJSONObject(i); Copy copy = new Copy(); JSONArray values = copyJson.getJSONArray("rows"); for (int j = 0; j < values.length(); j++) { JSONObject valJson = values.getJSONObject(j); String name = valJson.getString("bez"); String value = valJson.getJSONArray("values").getJSONObject(0).getString("dval"); if (!value.equals("")) { switch (name) { case "Exemplarstatus": copy.setStatus(value); break; case "Signatur": copy.setShelfmark(value); break; case "Standort": copy.setLocation(value); break; case "Themenabteilung": if (copy.getDepartment() != null) { value = copy.getDepartment() + value; } copy.setDepartment(value); break; case "Themenbereich": if (copy.getDepartment() != null) { value = copy.getDepartment() + value; } copy.setDepartment(value); break; } } } result.addCopy(copy); } return result; } catch (JSONException e) { e.printStackTrace(); throw new OpacErrorException(stringProvider .getFormattedString(StringProvider.INTERNAL_ERROR_WITH_DESCRIPTION, e.getMessage())); } } @Override public DetailledItem getResult(int position) throws IOException, OpacErrorException { // TODO Auto-generated method stub return null; } @Override public ReservationResult reservation(DetailledItem item, Account account, int useraction, String selection) throws IOException { // TODO Auto-generated method stub return null; } @Override public ProlongResult prolong(String media, Account account, int useraction, String selection) throws IOException { // TODO Auto-generated method stub return null; } @Override public ProlongAllResult prolongAll(Account account, int useraction, String selection) throws IOException { // TODO Auto-generated method stub return null; } @Override public CancelResult cancel(String media, Account account, int useraction, String selection) throws IOException, OpacErrorException { // TODO Auto-generated method stub return null; } @Override public AccountData account(Account account) throws IOException, JSONException, OpacErrorException { // TODO Auto-generated method stub return null; } @Override public List<SearchField> getSearchFields() throws IOException, JSONException { List<SearchField> fields = new ArrayList<>(); // Text fields String html = httpGet(opac_url + "/de/mobile/default.aspx", getDefaultEncoding()); Document doc = Jsoup.parse(html); Elements options = doc.select("#drpOptSearchT option"); for (Element option : options) { TextSearchField field = new TextSearchField(); field.setDisplayName(option.text()); field.setId(option.attr("value")); field.setData(new JSONObject("{\"filter\":false}")); field.setHint(""); fields.add(field); } // Dropdowns String text = httpGet(opac_url + "/de/mobile/GetRestrictions.ashx", getDefaultEncoding()); JSONArray filters = new JSONObject(text).getJSONArray("restrcontainers"); for (int i = 0; i < filters.length(); i++) { JSONObject filter = filters.getJSONObject(i); if (filter.getString("querytyp").equals("EJ")) { // Querying by year also works for other years than the ones // listed // -> Make it a text field instead of a dropdown TextSearchField field = new TextSearchField(); field.setDisplayName(filter.getString("kopf")); field.setId(filter.getString("querytyp")); field.setData(new JSONObject("{\"filter\":true}")); field.setHint(""); fields.add(field); } else { DropdownSearchField field = new DropdownSearchField(); field.setId(filter.getString("querytyp")); field.setDisplayName(filter.getString("kopf")); JSONArray restrictions = filter.getJSONArray("restrictions"); field.addDropdownValue("", "Alle"); for (int j = 0; j < restrictions.length(); j++) { JSONObject restriction = restrictions.getJSONObject(j); field.addDropdownValue(restriction.getString("id"), restriction.getString("bez")); } field.setData(new JSONObject("{\"filter\":true}")); fields.add(field); } } return fields; } @Override public String getShareUrl(String id, String title) { List<NameValuePair> params = new ArrayList<>(); params.add(new BasicNameValuePair("id", id)); String url; try { url = opac_url + "/default.aspx" + buildHttpGetParams(params); return url; } catch (UnsupportedEncodingException e) { e.printStackTrace(); } return null; } @Override public int getSupportFlags() { return SUPPORT_FLAG_ENDLESS_SCROLLING | SUPPORT_FLAG_CHANGE_ACCOUNT; } @Override protected String getDefaultEncoding() { return "UTF-8"; } @Override public void checkAccountData(Account account) throws IOException, JSONException, OpacErrorException { // TODO Auto-generated method stub } @Override public void setLanguage(String language) { // TODO Auto-generated method stub } @Override public Set<String> getSupportedLanguages() throws IOException { // TODO Auto-generated method stub return null; } }