<!-- If the browser does not support frames put the first topic content here --> <div class="Section1"> <p class="Standard" align="center" style='text-align:center'> <span style='font-size:24.0pt'>Consommation d'un Web Service REST<br /> (<b>méthode post)</b> dans une application Android</span></p> <p class="Standard"> </p> <p class="Standard"> </p> <p class="Standard" style='margin-bottom:5.65pt'><b><span style= 'font-size:16.0pt'>Description</span></b></p> <p class="Standard">Un web service, sous NetBeans, a été ajouté. Ce web service permet d'insérer, dans la base FBCN, une occurrence dans la table Course.</p> <p class="Standard" style='margin-top:6.0pt'>Détails du web service :</p> <div style= 'border:solid windowtext 1.0pt;padding:1.0pt 4.0pt 1.0pt 4.0pt'> <p class="Standard" style='border:none;padding:0cm'>@POST // Méthode HTTP utilisée pour ajouter une course</p> <p class="Standard" style='border:none;padding:0cm'><span lang= "EN-GB" xml:lang="EN-GB">@Path("insertion")</span></p> <p class="Standard" style='border:none;padding:0cm'><span lang= "EN-GB" xml:lang="EN-GB">public int inserCourse(@QueryParam("nom") String pnom, @QueryParam("lieu") String plieu, @QueryParam("date") String pdate, @QueryParam("heureDep") String pheureDep, @QueryParam("distance") float pdistance, @QueryParam("prix") int pprix, @QueryParam("challenge") int pchallenge)</span></p> <p class="Standard" style='border:none;padding:0cm'>{</p> <p class="Standard" style='border:none;padding:0cm'> int nb = 0;</p> <p class="Standard" style='border:none;padding:0cm'> nb = GestionCourse.InsertionCourse(pnom, plieu, pdate, pheureDep, pdistance, pprix, pchallenge);</p> <p class="Standard" style='border:none;padding:0cm'> return nb;</p> <p class="Standard" style='border:none;padding:0cm'>}</p> </div> <p class="Standard"> </p> <p class="Standard"> </p> <p class="Standard" style='margin-bottom:5.65pt'><b><span style= 'font-size:16.0pt'>Consommation du web service dans une application Android</span></b></p> <p class="Standard" style='margin-top:6.0pt'><u>Description de la tâche asynchrone appelée :</u></p> <div style= 'border:solid windowtext 1.0pt;padding:1.0pt 4.0pt 1.0pt 4.0pt'> <p class="Standard" style='border:none;padding:0cm'><span lang= "EN-GB" xml:lang="EN-GB">private class AccesWebServicesPost extends AsyncTask<Void, Void, HttpResponse> {</span></p> <p class="Standard" style='border:none;padding:0cm'><span lang= "EN-GB" xml:lang="EN-GB"> @Override</span></p> <p class="Standard" style='border:none;padding:0cm'><span lang= "EN-GB" xml:lang="EN-GB"> protected void onPreExecute() {</span></p> <p class="Standard" style='border:none;padding:0cm'><span lang= "EN-GB" xml:lang="EN-GB"> super.onPreExecute();</span></p> <p class="Standard" style='border:none;padding:0cm'><span lang= "EN-GB" xml:lang="EN-GB"> </span> Toast.makeText(getApplicationContext(), "Début du traitement asynchrone post", Toast.LENGTH_LONG).show();</p> <p class="Standard" style='border:none;padding:0cm'> }</p> <p class="Standard" style='border:none;padding:0cm'> @Override</p> <p class="Standard" style='border:none;padding:0cm'> <span lang="EN-GB" xml:lang="EN-GB">protected HttpResponse doInBackground(Void... params) {</span></p> <p class="Standard" style='border:none;padding:0cm'><span lang= "EN-GB" xml:lang="EN-GB"> try</span></p> <p class="Standard" style='border:none;padding:0cm'><span lang= "EN-GB" xml:lang="EN-GB"> {</span></p> <p class="Standard" style='border:none;padding:0cm'><span lang= "EN-GB" xml:lang= "EN-GB"> HttpClient c=new DefaultHttpClient();</span></p> <p class="Standard" style='border:none;padding:0cm'><b><span lang= "EN-GB" xml:lang= "EN-GB"> HttpPost req=new HttpPost(url);</span></b></p> <p class="Standard" style='border:none;padding:0cm'><span lang= "EN-GB" xml:lang= "EN-GB"> req.addHeader("Content-Type", typeDeContenu);</span></p> <p class="Standard" style='border:none;padding:0cm'><span lang= "EN-GB" xml:lang= "EN-GB"> HttpResponse reponse = c.execute(req);</span></p> <p class="Standard" style='border:none;padding:0cm'><span lang= "EN-GB" xml:lang= "EN-GB"> return reponse;</span></p> <p class="Standard" style='border:none;padding:0cm'><span lang= "EN-GB" xml:lang="EN-GB"> }</span></p> <p class="Standard" style='border:none;padding:0cm'><span lang= "EN-GB" xml:lang="EN-GB"> catch (Exception ex)</span></p> <p class="Standard" style='border:none;padding:0cm'><span lang= "EN-GB" xml:lang="EN-GB"> {</span></p> <p class="Standard" style='border:none;padding:0cm'><span lang= "EN-GB" xml:lang= "EN-GB"> System.out.println("ERREUR TACHE ASYNCHRONE POST : " + ex.getMessage());</span></p> <p class="Standard" style='border:none;padding:0cm'><span lang= "EN-GB" xml:lang= "EN-GB"> </span> return null;</p> <p class="Standard" style='border:none;padding:0cm'> }</p> <p class="Standard" style='border:none;padding:0cm'> }</p> <p class="Standard" style='border:none;padding:0cm'>}</p> </div> <span style= 'font-size:12.0pt;font-family:"Times New Roman"'><br clear="all" style='page-break-before:always' /></span> <p class="Standard"> </p> <p class="Standard" style='margin-bottom:6.0pt'>La tache asynchrone sera appelée, dans cet exemple, lors du click sur un bouton :</p> <div style= 'border:solid windowtext 1.0pt;padding:1.0pt 4.0pt 1.0pt 4.0pt'> <p class="Standard" style='border:none;padding:0cm'><span lang= "EN-GB" xml:lang="EN-GB">private class ClickSurBoutonInsere implements OnClickListener</span></p> <p class="Standard" style='border:none;padding:0cm'><span lang= "EN-GB" xml:lang="EN-GB">{</span></p> <p class="Standard" style='border:none;padding:0cm'><span lang= "EN-GB" xml:lang="EN-GB"> @Override</span></p> <p class="Standard" style='border:none;padding:0cm'><span lang= "EN-GB" xml:lang="EN-GB"> public void onClick(View v)</span></p> <p class="Standard" style='border:none;padding:0cm'><span lang= "EN-GB" xml:lang="EN-GB"> </span> {</p> <p class="Standard" style='border:none;padding:0cm'> // valeurs des paramètres à récupérer dans des zones de textes plutôt "qu'en dur" comme ici</p> <p class="Standard" style='border:none;padding:0cm'> <b> String param1 = URLEncoder.encode("Corrida de Paimpol");</b></p> <p class="Standard" style='border:none;padding:0cm'> <b> </b> <b><span lang="EN-GB" xml:lang="EN-GB">String param2 = URLEncoder.encode("Paimpol");</span></b></p> <p class="Standard" style='border:none;padding:0cm'><b><span lang= "EN-GB" xml:lang="EN-GB"> String param3 = URLEncoder.encode("2015-11-21");</span></b></p> <p class="Standard" style='border:none;padding:0cm'><b><span lang= "EN-GB" xml:lang="EN-GB"> </span> String param4 = URLEncoder.encode("19:00");</b></p> <p class="Standard" style='border:none;padding:0cm'> <b> String param5 = URLEncoder.encode("9");</b></p> <p class="Standard" style='border:none;padding:0cm'> <b> String param6 = URLEncoder.encode("10");</b></p> <p class="Standard" style='border:none;padding:0cm'> <b> String param7 = URLEncoder.encode("0");</b></p> <p class="Standard" style='border:none;padding:0cm'> <b> param = "nom=" + param1 + "&lieu=" + param2 + "&date=" + param3 + "&heureDep=" + param4 + "&distance=" + param5 + "&prix=" + param6 + "&challenge=" + param7;</b></p> <p class="Standard" style='border:none;padding:0cm'> <b> url = url_base + "/insertion?" + param;</b></p> <p class="Standard" style='border:none;padding:0cm'> <b> typeDeContenu = "text/plain";</b></p> <p class="Standard" style='border:none;padding:0cm'> <b> //Lancement de la tache asynchrone</b></p> <p class="Standard" style='border:none;padding:0cm'> <b> </b> <b><span lang="EN-GB" xml:lang="EN-GB">AccesWebServicesPost accesWS2 = new AccesWebServicesPost();</span></b></p> <p class="Standard" style='border:none;padding:0cm'><span lang= "EN-GB" xml:lang="EN-GB"> try</span></p> <p class="Standard" style='border:none;padding:0cm'><span lang= "EN-GB" xml:lang="EN-GB"> {</span></p> <p class="Standard" style='border:none;padding:0cm'><span lang= "EN-GB" xml:lang= "EN-GB"> </span> // Recupération de la valeur de retour (de type HttpResponse)</p> <p class="Standard" style='border:none;padding:0cm'> <span lang="EN-GB" xml:lang="EN-GB">HttpResponse rep2 = accesWS2.execute().get();</span></p> <p class="Standard" style='border:none;padding:0cm'><span lang= "EN-GB" xml:lang= "EN-GB"> BufferedReader rd = new BufferedReader(new InputStreamReader(rep2.getEntity().getContent()));</span></p> <p class="Standard" style='border:none;padding:0cm'><span lang= "EN-GB" xml:lang= "EN-GB"> </span> String retourWS = rd.readLine();</p> <p class="Standard" style='border:none;padding:0cm'> txtAffichage.setText("Nombre de ligne(s) insérée(s) : " + retourWS);</p> <p class="Standard" style='border:none;padding:0cm'> }</p> <p class="Standard" style='border:none;padding:0cm'> catch (Exception e)</p> <p class="Standard" style='border:none;padding:0cm'> {</p> <p class="Standard" style='border:none;padding:0cm'> System.out.println("ERREUR SUR INSERTION : " + e.getMessage());</p> <p class="Standard" style='border:none;padding:0cm'> }</p> <p class="Standard" style='border:none;padding:0cm'> }</p> <p class="Standard" style='border:none;padding:0cm'>}</p> </div> <p class="Standard"> </p> </div>
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