<!-- If the browser does not support frames put the first topic content here --> <div class="WordSection1"> <p class="Standard" align="center" style='text-align:center'> <span style='font-size:24.0pt'>Consommation d'un Web Service REST<br /> dans une application Android</span></p> <p class="Standard"><span style='font-size:8.0pt'> </span></p> <p class="Standard"><span style='font-size:8.0pt'> </span></p> <p class="Standard" style='margin-bottom:5.65pt'><b><span style= 'font-size:16.0pt'>Description</span></b></p> <p class="Standard">Création d'une application Android permettant d'afficher le catalogue des formations de la société FormArmor. Ce catalogue sera fourni par un Web Service Rest créé préalablement. Ce Web Service est disponible sous GlassFish à l'adresse : "<a href="http://192.168.1.16:8080/WebServiceCatalogue/webresources/formation">http://192.168.1.16:8080/WebServiceCatalogue/webresources/formation</a>"</p> <p class="Standard">192.168.1.16 est l'adresse IP du poste contenant le Web Service et 8080 le numéro du port de GlassFish.</p> <p class="Standard">La ressource est ici fournie au format XML.</p> <p class="Standard"> </p> <p class="Standard" style='margin-bottom:5.65pt'><b><span style= 'font-size:16.0pt'>Étapes à suivre</span></b></p> <p class="Standard">Sous Android Studio</p> <p class="Standard" style= 'margin-top:5.65pt;margin-right:0cm;margin-bottom:2.85pt; margin-left:36.0pt;text-indent:-18.0pt'> <span style='font-family:Symbol'>·<span style= 'font:7.0pt "Times New Roman"'> </span></span> Créer l'application Android intitulé "Android_AfficheFormations".</p> <p class="Standard" style= 'margin-top:5.65pt;margin-right:0cm;margin-bottom:2.85pt; margin-left:36.0pt;text-indent:-18.0pt'> <span style='font-family:Symbol'>·<span style= 'font:7.0pt "Times New Roman"'> </span></span> Modifier les permissions en ajoutant la "use-permission", dans le fichier AndroidManifest.xml, permettant l'utilisation d'Internet puis</p> <div style= 'border:solid windowtext 1.0pt;padding:1.0pt 4.0pt 1.0pt 4.0pt; background:white;margin-left:36.0pt;margin-right:0cm'> <pre style='background: white;border:none;padding:0cm'> <b><span style='color:#660E7A'> android</span><span style= 'color:blue'>:usesCleartextTraffic=</span><span style= 'color:green'>"true"</span></b> </pre></div> <p class="Standard" style='margin-left:36.0pt;text-indent:-18.0pt'> <span style='font-family:Symbol;color:red'>·<span style= 'font:7.0pt "Times New Roman"'> </span></span> <b><span style='color:red'>Juste après le <application> :</span></b></p> <p class="Standard" style= 'margin-top:0cm;margin-right:0cm;margin-bottom:3.0pt; margin-left:36.0pt'> <span style= 'position:absolute;z-index:251658240; left:0px;margin-left:247px;margin-top:38px;width:157px;height:12px'> <img width="157" height="12" src= "3_tuto_AppliAndroidClienteWS_REST_fichiers/image001.gif" alt= "image" /></span><span style= 'position:absolute;z-index:251657216;left:0px;margin-left:68px; margin-top:14px;width:93px;height:16px'><img width="93" height="16" src= "3_tuto_AppliAndroidClienteWS_REST_fichiers/image002.gif" alt= "image" /></span><img border="0" width="477" height="165" id= "Image 1" src= "3_tuto_AppliAndroidClienteWS_REST_fichiers/image003.gif" alt= "image" name="Image 1" /></p> <p class="Standard" style= 'margin-top:5.65pt;margin-right:0cm;margin-bottom:2.85pt; margin-left:36.0pt;text-indent:-18.0pt'> <span style='font-family:Symbol'>·<span style= 'font:7.0pt "Times New Roman"'> </span></span> Modifier l'activité</p> <p class="Standard" style= 'margin-top:0cm;margin-right:0cm;margin-bottom:6.0pt; margin-left:53.85pt;text-indent:.85pt'> Insérer un TextView dont l'id sera "txtAffichage" et sans texte. Voici le code Xml en résultant :</p> <div style= 'border:solid windowtext 1.0pt;padding:1.0pt 4.0pt 1.0pt 4.0pt; background:white'> <pre style='background:white;border:none;padding:0cm'> <i><span style='color:black'><?</span></i><b><span style= 'color:blue'>xml version=</span><span style= 'color:green'>"1.0" </span><span style= 'color:blue'>encoding=</span><span style= 'color:green'>"utf-8"</span></b><i><span style= 'color:black'>?><br /></span></i><span style= 'color:black'><</span><b><span style= 'color:navy'>android.support.constraint.ConstraintLayout </span><span style='color:blue'>xmlns:</span><span style='color:#660E7A'>android</span><span style='color:blue'>=</span><span style='color:green'>"http://schemas.android.com/apk/res/android"<br /> </span><span style='color:blue'>xmlns:</span><span style='color:#660E7A'>app</span><span style='color:blue'>=</span><span style='color:green'>"http://schemas.android.com/apk/res-auto"<br /> </span><span style='color:blue'>xmlns:</span><span style='color:#660E7A'>tools</span><span style='color:blue'>=</span><span style='color:green'>"http://schemas.android.com/tools"<br /> </span><span style='color:#660E7A'>android</span><span style='color:blue'>:layout_width=</span><span style='color:green'>"match_parent"<br /> </span><span style='color:#660E7A'>android</span><span style='color:blue'>:layout_height=</span><span style='color:green'>"match_parent"<br /> </span><span style='color:#660E7A'>tools</span><span style='color:blue'>:context=</span><span style='color:green'>".MainActivity"</span></b><span style='color: black'>><br /></span><span style='font-size:8.0pt;color:black'><br /></span><span style='color:black'> <</span><b><span style='color:navy'>LinearLayout<br /> </span><span style='color:#660E7A'>android</span><span style='color:blue'>:layout_width=</span><span style='color:green'>"368dp"<br /> </span><span style='color:#660E7A'>android</span><span style='color:blue'>:layout_height=</span><span style='color:green'>"495dp"<br /> </span><span style='color:#660E7A'>android</span><span style='color:blue'>:orientation=</span><span style='color:green'>"horizontal"<br /> </span><span style='color:#660E7A'>tools</span><span style='color:blue'>:layout_editor_absoluteX=</span><span style='color:green'>"8dp"<br /> </span><span style='color:#660E7A'>tools</span><span style='color:blue'>:layout_editor_absoluteY=</span><span style='color:green'>"8dp"</span></b><span style='color:black'>><br /> <</span><b><span style='color:navy'>TextView<br /> </span><span style='color:#660E7A'>android</span><span style='color:blue'>:id=</span><span style='color:green'>"@+id/txtAffichage"<br /> </span><span style='color:#660E7A'>android</span><span style='color:blue'>:layout_width=</span><span style='color:green'>"match_parent"<br /> </span><span style='color:#660E7A'>android</span><span style='color:blue'>:layout_height=</span><span style='color:green'>"match_parent"<br /> </span><span style='color:#660E7A'>android</span><span style='color:blue'>:layout_weight=</span><span style='color:green'>"1" </span></b><span style='color:black'>/><br /> </</span><b><span style='color:navy'>LinearLayout</span></b><span style='color:black'>><br /></</span><b><span style='color:navy'>android.support.constraint.ConstraintLayout</span></b><span style='color:black'>></span> </pre></div> <span style= 'font-size:12.0pt;font-family:"Times New Roman",serif'><br clear= "all" style='page-break-before:always' /></span> <p class="Standard"> </p> <p class="Standard" style= 'margin-top:6.0pt;margin-right:0cm;margin-bottom:6.0pt; margin-left:35.7pt;text-indent:-17.85pt'> <span style='font-family:Symbol'>·<span style= 'font:7.0pt "Times New Roman"'> </span></span> Modifier la classe principale "MainActivity.java" pour obtenir le code suivant :</p> <div style= 'border:solid windowtext 1.0pt;padding:1.0pt 4.0pt 1.0pt 4.0pt; background:white;margin-left:36.0pt;margin-right:0cm'> <pre style='background: white;border:none;padding:0cm'> <span style= 'font-size:11.0pt;font-family:"Times New Roman",serif; color:#0033B3'>package </span><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:black'>com.example.android_afficheformations2023</span><span style='font-size:11.0pt;font-family:"Times New Roman",serif;color:#080808'>;<br /><br /></span><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:#0033B3'>import </span><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:black'>android.app.Activity</span><span style='font-size:11.0pt; font-family:"Times New Roman",serif;color:#080808'>;<br /></span><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:#0033B3'>import </span><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:black'>android.os.AsyncTask</span><span style='font-size:11.0pt; font-family:"Times New Roman",serif;color:#080808'>;<br /></span><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:#0033B3'>import </span><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:black'>android.os.Bundle</span><span style='font-size:11.0pt;font-family: "Times New Roman",serif;color:#080808'>;<br /><br /></span><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:#0033B3'>import </span><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:black'>android.widget.TextView</span><span style='font-size:11.0pt; font-family:"Times New Roman",serif;color:#080808'>;<br /></span><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:#0033B3'>import </span><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:black'>android.widget.Toast</span><span style='font-size:11.0pt; font-family:"Times New Roman",serif;color:#080808'>;<br /><br /></span><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:#0033B3'>import </span><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:black'>java.io.BufferedReader</span><span style='font-size:11.0pt; font-family:"Times New Roman",serif;color:#080808'>;<br /></span><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:#0033B3'>import </span><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:black'>java.io.InputStream</span><span style='font-size:11.0pt; font-family:"Times New Roman",serif;color:#080808'>;<br /></span><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:#0033B3'>import </span><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:black'>java.io.InputStreamReader</span><span style='font-size:11.0pt; font-family:"Times New Roman",serif;color:#080808'>;<br /><br /></span><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:#0033B3'>import </span><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:black'>java.net.HttpURLConnection</span><span style='font-size:11.0pt; font-family:"Times New Roman",serif;color:#080808'>;<br /></span><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:#0033B3'>import </span><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:black'>java.net.URL</span><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:#080808'>;<br /><br /></span><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:#0033B3'>public class </span><span style='font-size:11.0pt;font-family: "Times New Roman",serif;color:black'>MainActivity </span><span style='font-size:11.0pt;font-family:"Times New Roman",serif;color:#0033B3'>extends </span><span style='font-size:11.0pt;font-family:"Times New Roman",serif;color:black'>Activity<br /></span><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:#080808'>{<br /> </span><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:black'>TextView </span><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:#871094'>txtAffichage</span><span style='font-size:11.0pt;font-family: "Times New Roman",serif;color:#080808'>;<br /><br /> </span><i><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:#8C8C8C'>// L'ADRESSE IP SERA A REMPLACER PAR L'IP DU POSTE CONTENANT LE WEB SERVICE<br /> // Version maison<br /> </span></i><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:black'>String </span><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:#871094'>lien </span><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:#080808'>= </span><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:#067D17'>"http://192.168.1.20:8080/WebService2023/webresources/formation"</span><span style='font-size:11.0pt;font-family:"Times New Roman",serif;color:#080808'>;<br /> </span><i><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:#8C8C8C'>// Version lycée<br /> // String lien = "http://192.168.1.5:8080/WebService2023/webresources/formation";<br /> </span></i><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:black'>URL </span><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:#871094'>urlCon</span><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:#080808'>;<br /> </span><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:black'>HttpURLConnection </span><span style='font-size:11.0pt;font-family: "Times New Roman",serif;color:#871094'>urlConnection</span><span style='font-size:11.0pt;font-family:"Times New Roman",serif;color:#080808'>;<br /><br /> </span><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:#9E880D'>@Override<br /> </span><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:#0033B3'>protected void </span><span style='font-size:11.0pt;font-family: "Times New Roman",serif;color:#00627A'>onCreate</span><span style='font-size: 11.0pt;font-family:"Times New Roman",serif;color:#080808'>(</span><span style='font-size:11.0pt;font-family:"Times New Roman",serif;color:black'>Bundle </span><span style='font-size:11.0pt;font-family:"Times New Roman",serif;color:#080808'>savedInstanceState)<br /> {<br /> </span><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:#0033B3'>super</span><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:#080808'>.onCreate(savedInstanceState);<br /> setContentView(</span><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:black'>R</span><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:#080808'>.</span><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:black'>layout</span><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:#080808'>.</span><i><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:#871094'>activity_main</span></i><span style='font-size:11.0pt; font-family:"Times New Roman",serif;color:#080808'>);<br /> initialisations();<br /> </span><i><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:#8C8C8C'>//Lancement de la tache asynchrone (obligatoire car l'appel à un WebService est "une tache longue")<br /> </span></i><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:black'>AccesWebServices accesWS </span><span style='font-size:11.0pt; font-family:"Times New Roman",serif;color:#080808'>= </span><span style='font-size:11.0pt;font-family:"Times New Roman",serif;color:#0033B3'>new </span><span style='font-size:11.0pt;font-family:"Times New Roman",serif;color:#080808'>AccesWebServices();<br /> </span><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:#0033B3'>try<br /> </span><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:#080808'>{<br /> </span><i><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:#8C8C8C'>//Recupération et affichage de la valeur de retour(de type String)<br /> </span></i><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:black'>String rep </span><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:#080808'>= </span><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:black'>accesWS</span><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:#080808'>.execute().get();<br /> </span><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:#871094'>txtAffichage</span><span style='font-size:11.0pt;font-family: "Times New Roman",serif;color:#080808'>.setText(</span><span style='font-size: 11.0pt;font-family:"Times New Roman",serif;color:black'>rep</span><span style='font-size:11.0pt;font-family:"Times New Roman",serif;color:#080808'>);<br /> }<br /> </span><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:#0033B3'>catch </span><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:#080808'>(</span><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:black'>Exception </span><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:#080808'>e)<br /> {<br /> e.printStackTrace();<br /> }<br /> }<br /> </span><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:#0033B3'>public void </span><span style='font-size:11.0pt;font-family: "Times New Roman",serif;color:#00627A'>initialisations</span><span style='font-size:11.0pt;font-family:"Times New Roman",serif;color:#080808'>()<br /> {<br /> </span><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:#871094'>txtAffichage </span><span style='font-size:11.0pt;font-family: "Times New Roman",serif;color:#080808'>= (</span><span style='font-size:11.0pt; font-family:"Times New Roman",serif;color:black'>TextView</span><span style='font-size:11.0pt;font-family:"Times New Roman",serif;color:#080808'>) findViewById(</span><span style='font-size:11.0pt;font-family:"Times New Roman",serif;color:black'>R</span><span style='font-size:11.0pt;font-family:"Times New Roman",serif;color:#080808'>.</span><span style='font-size:11.0pt;font-family:"Times New Roman",serif;color:black'>id</span><span style='font-size:11.0pt;font-family:"Times New Roman",serif;color:#080808'>.</span><i><span style='font-size:11.0pt;font-family:"Times New Roman",serif;color:#871094'>txtAffichage</span></i><span style='font-size:11.0pt;font-family:"Times New Roman",serif;color:#080808'>);<br /> }<br /> </span><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:#0033B3'>private class </span><span style='font-size:11.0pt;font-family: "Times New Roman",serif;color:black'>AccesWebServices </span><span style='font-size:11.0pt;font-family:"Times New Roman",serif;color:#0033B3'>extends </span><span style='font-size:11.0pt;font-family:"Times New Roman",serif;color:black'>AsyncTask</span><span style='font-size:11.0pt;font-family:"Times New Roman",serif;color:#080808'><</span><span style='font-size:11.0pt;font-family:"Times New Roman",serif;color:black'>Void</span><span style='font-size:11.0pt;font-family:"Times New Roman",serif;color:#080808'>, </span><span style='font-size:11.0pt;font-family:"Times New Roman",serif;color:black'>Void</span><span style='font-size:11.0pt;font-family:"Times New Roman",serif;color:#080808'>, </span><span style='font-size:11.0pt;font-family:"Times New Roman",serif;color:black'>String</span><span style='font-size:11.0pt;font-family:"Times New Roman",serif;color:#080808'>><br /> {<br /> </span><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:#9E880D'>@Override<br /> </span><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:#0033B3'>protected void </span><span style='font-size:11.0pt;font-family: "Times New Roman",serif;color:#00627A'>onPreExecute</span><span style='font-size:11.0pt;font-family:"Times New Roman",serif;color:#080808'>()<br /> {<br /> </span><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:#0033B3'>super</span><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:#080808'>.onPreExecute();<br /> </span><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:black'>Toast</span><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:#080808'>.<i>makeText</i>(getApplicationContext(), </span><span style='font-size:11.0pt;font-family:"Times New Roman",serif;color:#067D17'>"Début du traitement asynchrone"</span><span style='font-size:11.0pt;font-family:"Times New Roman",serif;color:#080808'>, </span><span style='font-size:11.0pt;font-family:"Times New Roman",serif;color:black'>Toast</span><span style='font-size:11.0pt;font-family:"Times New Roman",serif;color:#080808'>.</span><i><span style='font-size:11.0pt;font-family:"Times New Roman",serif;color:#871094'>LENGTH_LONG</span></i><span style='font-size:11.0pt;font-family:"Times New Roman",serif;color:#080808'>).show();<br /> }<br /><br /> </span><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:#9E880D'>@Override<br /> </span><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:#0033B3'>protected </span><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:black'>String </span><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:#00627A'>doInBackground</span><span style='font-size:11.0pt;font-family: "Times New Roman",serif;color:#080808'>(</span><span style='font-size:11.0pt; font-family:"Times New Roman",serif;color:black'>Void</span><span style='font-size:11.0pt;font-family:"Times New Roman",serif;color:#080808'>... params) {<br /> </span><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:#0033B3'>try<br /> </span><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:#080808'>{<br /> </span><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:#871094'>urlCon </span><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:#080808'>= </span><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:#0033B3'>new </span><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:#080808'>URL(</span><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:#871094'>lien</span><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:#080808'>);<br /> </span><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:#871094'>urlConnection </span><span style='font-size:11.0pt;font-family: "Times New Roman",serif;color:#080808'>= (</span><span style='font-size:11.0pt; font-family:"Times New Roman",serif;color:black'>HttpURLConnection</span><span style='font-size:11.0pt;font-family:"Times New Roman",serif;color:#080808'>) </span><span style='font-size:11.0pt;font-family:"Times New Roman",serif;color:#871094'>urlCon</span><span style='font-size:11.0pt;font-family:"Times New Roman",serif;color:#080808'>.openConnection();<br /> </span><i><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:#8C8C8C'>// Transformation du HttpUrlConnection en chaine<br /> </span></i><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:black'>InputStream in </span><span style='font-size:11.0pt;font-family: "Times New Roman",serif;color:#080808'>= </span><span style='font-size:11.0pt; font-family:"Times New Roman",serif;color:#871094'>urlConnection</span><span style='font-size:11.0pt;font-family:"Times New Roman",serif;color:#080808'>.getInputStream();<br /> </span><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:black'>BufferedReader rd </span><span style='font-size:11.0pt;font-family: "Times New Roman",serif;color:#080808'>= </span><span style='font-size:11.0pt; font-family:"Times New Roman",serif;color:#0033B3'>new </span><span style='font-size:11.0pt;font-family:"Times New Roman",serif;color:#080808'>BufferedReader(</span><span style='font-size:11.0pt;font-family:"Times New Roman",serif;color:#0033B3'>new </span><span style='font-size:11.0pt;font-family:"Times New Roman",serif;color:#080808'>InputStreamReader(</span><span style='font-size:11.0pt;font-family:"Times New Roman",serif;color:black'>in</span><span style='font-size:11.0pt;font-family:"Times New Roman",serif;color:#080808'>));<br /> </span><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:black'>String retour </span><span style='font-size:11.0pt;font-family: "Times New Roman",serif;color:#080808'>= </span><span style='font-size:11.0pt; font-family:"Times New Roman",serif;color:black'>rd</span><span style='font-size:11.0pt;font-family:"Times New Roman",serif;color:#080808'>.readLine();<br /> </span><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:#0033B3'>return </span><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:black'>retour</span><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:#080808'>;<br /> }<br /> </span><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:#0033B3'>catch </span><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:#080808'>(</span><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:black'>Exception </span><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:#080808'>ex)<br /> {<br /> </span><span style='font-size:11.0pt;font-family:"Times New Roman",serif; color:#0033B3'>return null</span><span style='font-size:11.0pt;font-family: "Times New Roman",serif;color:#080808'>;<br /> }<br /> }<br /> }<br />}</span> </pre></div> <p class="MsoNormal" style= 'text-autospace:ideograph-numeric ideograph-other'><span style= 'font-size:11.0pt'> </span></p> <p class="Standard" style='margin-left:63.8pt;text-indent:-63.8pt'> <span style='font-size:11.0pt'> </span></p> <p class="Standard" style='margin-left:63.8pt;text-indent:-63.8pt'> <span style='font-size:11.0pt'>Dans la classe principale modifier également l'adresse IP et le nom du projet se trouvant à la ligne</span></p> <p class="Standard" style='margin-right:-14.3pt'><b><span lang= "EN-US" style='font-size:10.0pt;font-family:Consolas;color:#7F0055' xml:lang="EN-US">private</span></b> <b><span lang="EN-US" style= 'font-size:10.0pt;font-family:Consolas;color:#7F0055' xml:lang= "EN-US">static</span></b> <b><span lang="EN-US" style= 'font-size:10.0pt;font-family:Consolas;color:#7F0055' xml:lang= "EN-US">final</span></b> <span lang="EN-US" style= 'font-size:10.0pt;font-family:Consolas;color:black' xml:lang= "EN-US">String</span> <b><i><span lang="EN-US" style= 'font-size:10.0pt;font-family:Consolas;color:#0000C0' xml:lang= "EN-US">url</span></i></b> <span lang="EN-US" style= 'font-size:10.0pt;font-family:Consolas;color:black' xml:lang= "EN-US">=</span><span lang="EN-US" style= 'font-size:10.0pt;font-family:Consolas;color:#2A00FF' xml:lang= "EN-US">"http://<b>192.168.1.20</b>:8080/<b>WebService2023</b>/webresources/formation"</span><span lang="EN-US" style='font-size:10.0pt;font-family:Consolas;color:black' xml:lang= "EN-US">;</span></p> <p class="Standard" style='margin-left:63.8pt;text-indent:-63.8pt'> Pour mettre ce qui correspond à votre poste.</p> <p class="Standard" style='margin-left:63.8pt;text-indent:-63.8pt'> </p> <p class="Standard" style='margin-bottom:5.65pt'><b><span style= 'font-size:16.0pt'>Explications de la classe principale Java</span></b></p> <p class="Standard" style='margin-bottom:2.85pt'>La "consommation" d'un Web Service sous Android est considéré comme une tâche lourde et donc en tant que telle doit être exécutée en mode asynchrone (tâche de fond). <i>Voir cours précédent sur les AsynTask</i>. Ici la "classe asynchrone" est AccesWebServices. Elle hérite de la classe AsyncTask qui implémente elle-même une interface, nous obligeant à redéfinir au moins la méthode "doInBackGround". Code de cette méthode :</p> <div style= 'border:solid windowtext 1.0pt;padding:1.0pt 1.0pt 1.0pt 1.0pt; margin-left:2.0cm;margin-right:0cm'> <p class="MsoNormal" style= 'text-autospace:none;border:none;padding:0cm'><b><span lang="EN-US" style='font-size:10.0pt;font-family:Consolas;color:#7F0055' xml:lang="EN-US">protected</span></b><span lang="EN-US" style= 'font-size:10.0pt;font-family:Consolas;color:black' xml:lang= "EN-US">HttpResponse doInBackground(Void...</span> <span lang= "EN-US" style= 'font-size: 10.0pt;font-family:Consolas;color:#6A3E3E' xml:lang= "EN-US">params</span><span lang="EN-US" style= 'font-size:10.0pt;font-family:Consolas;color:black' xml:lang= "EN-US">) {</span></p> <p class="MsoNormal" style= 'text-autospace:none;border:none;padding:0cm'><span lang="EN-US" style='font-size:10.0pt;font-family:Consolas;color:black' xml:lang= "EN-US"> </span> <b><span lang="EN-US" style= 'font-size:10.0pt;font-family:Consolas;color:#7F0055' xml:lang= "EN-US">try</span></b></p> <p class="MsoNormal" style= 'text-autospace:none;border:none;padding:0cm'><span lang="EN-US" style='font-size:10.0pt;font-family:Consolas;color:black' xml:lang= "EN-US"> {</span></p> <p class="MsoNormal" style= 'text-autospace:none;border:none;padding:0cm'><span lang="EN-US" style='font-size:10.0pt;font-family:Consolas;color:black' xml:lang= "EN-US"> </span> <span style='font-size:11.0pt;color:#871094'>urlCon</span> <span style='font-size: 11.0pt;color:#080808'>=</span> <span style= 'font-size:11.0pt;color:#0033B3'>new</span> <span style= 'font-size:11.0pt;color:#080808'>URL(</span><span style= 'font-size:11.0pt;color:#871094'>lien</span><span style= 'font-size:11.0pt; color:#080808'>);<br /></span><span style= 'font-size:11.0pt;color:#871094'> urlConnection</span> <span style='font-size:11.0pt;color:#080808'>= (</span><span style= 'font-size:11.0pt;color:black'>HttpURLConnection</span><span style= 'font-size:11.0pt;color:#080808'>)</span> <span style= 'font-size:11.0pt; color:#871094'>urlCon</span><span style= 'font-size:11.0pt;color:#080808'>.openConnection();<br /></span><i><span style='font-size:11.0pt;color:#8C8C8C'> // Transformation du HttpUrlConnection en chaine<br /></span></i><span style= 'font-size:11.0pt;color:black'> InputStream in</span> <span style= 'font-size:11.0pt;color:#080808'>=</span> <span style= 'font-size:11.0pt;color:#871094'>urlConnection</span><span style= 'font-size:11.0pt;color:#080808'>.getInputStream();<br /></span><span style='font-size:11.0pt;color:black'> BufferedReader rd</span> <span style= 'font-size:11.0pt;color:#080808'>=</span> <span style= 'font-size:11.0pt;color:#0033B3'>new</span> <span style= 'font-size:11.0pt; color:#080808'>BufferedReader(</span><span style='font-size:11.0pt;color:#0033B3'>new</span> <span style= 'font-size:11.0pt;color:#080808'>InputStreamReader(</span><span style='font-size:11.0pt;color:black'>in</span><span style='font-size:11.0pt; color:#080808'>));<br /> </span><span style= 'font-size:11.0pt;color:black'> String retour</span> <span style= 'font-size:11.0pt;color:#080808'>=</span> <span style= 'font-size:11.0pt;color:black'>rd</span><span style= 'font-size:11.0pt; color:#080808'>.readLine();<br /></span><span style='font-size:11.0pt;color:#0033B3'> return</span> <span style= 'font-size:11.0pt;color:black'>retour</span><span style= 'font-size:11.0pt; color:#080808'>;<br /></span><span lang="EN-US" style='font-size:10.0pt;font-family:Consolas; color:black' xml:lang="EN-US"> }</span></p> <p class="MsoNormal" style= 'text-autospace:none;border:none;padding:0cm'><span lang="EN-US" style='font-size:10.0pt;font-family:Consolas;color:black' xml:lang= "EN-US"> </span> <b><span lang="EN-US" style= 'font-size:10.0pt;font-family:Consolas;color:#7F0055' xml:lang= "EN-US">catch</span></b><span lang="EN-US" style= 'font-size:10.0pt;font-family:Consolas;color:black' xml:lang= "EN-US">(Exception</span> <span lang="EN-US" style= 'font-size:10.0pt;font-family:Consolas; color:#6A3E3E' xml:lang= "EN-US">ex</span><span lang="EN-US" style= 'font-size:10.0pt;font-family: Consolas;color:black' xml:lang= "EN-US">)</span></p> <p class="MsoNormal" style= 'text-autospace:none;border:none;padding:0cm'><span lang="EN-US" style='font-size:10.0pt;font-family:Consolas;color:black' xml:lang= "EN-US"> {</span></p> <p class="MsoNormal" style= 'text-autospace:none;border:none;padding:0cm'><span lang="EN-US" style='font-size:10.0pt;font-family:Consolas;color:black' xml:lang= "EN-US"> </span> <b><span lang="EN-US" style= 'font-size:10.0pt;font-family:Consolas;color:#7F0055' xml:lang= "EN-US">return</span></b> <b><span lang="EN-US" style= 'font-size:10.0pt;font-family:Consolas;color:#7F0055' xml:lang= "EN-US">null</span></b><span lang="EN-US" style= 'font-size:10.0pt;font-family:Consolas;color:black' xml:lang= "EN-US">;</span></p> <p class="MsoNormal" style= 'text-autospace:none;border:none;padding:0cm'><span lang="EN-US" style='font-size:10.0pt;font-family:Consolas;color:black' xml:lang= "EN-US"> }</span></p> <p class="MsoNormal" style= 'text-autospace:none;border:none;padding:0cm'><span lang="EN-US" style='font-size:10.0pt;font-family:Consolas;color:black' xml:lang= "EN-US"> </span> <span style= 'font-size:10.0pt;font-family:Consolas;color:black'>}</span></p> </div> <p class="Standard"> </p> <p class="Standard">L'exécution de la tâche de fond se fait en instanciant la classe AccesWebServices et en invoquant, à travers cette instance, la méthode execute() :</p> <div style= 'border:solid windowtext 1.0pt;padding:1.0pt 1.0pt 1.0pt 1.0pt; margin-left:2.0cm;margin-right:0cm'> <p class="MsoNormal" style= 'text-autospace:none;border:none;padding:0cm'><span lang="EN-US" style='font-size:10.0pt;font-family:Consolas;color:black' xml:lang= "EN-US">AccesWebServices</span> <span lang="EN-US" style= 'font-size:10.0pt;font-family:Consolas; color:#6A3E3E' xml:lang= "EN-US">accesWS</span> <span lang="EN-US" style= 'font-size:10.0pt; font-family:Consolas;color:black' xml:lang= "EN-US">=</span> <b><span lang="EN-US" style= 'font-size:10.0pt;font-family:Consolas;color:#7F0055' xml:lang= "EN-US">new</span></b><span lang="EN-US" style= 'font-size:10.0pt;font-family:Consolas;color:black' xml:lang= "EN-US">AccesWebServices();</span></p> <p class="MsoNormal" style= 'text-autospace:none;border:none;padding:0cm'><span lang="EN-US" style='font-size:10.0pt;font-family:Consolas;color:black' xml:lang= "EN-US"> </span> <b><span lang="EN-US" style='font-size:10.0pt;font-family:Consolas;color:#7F0055' xml:lang="EN-US">try</span></b></p> <p class="MsoNormal" style= 'text-autospace:none;border:none;padding:0cm'><span lang="EN-US" style='font-size:10.0pt;font-family:Consolas;color:black' xml:lang= "EN-US"> {</span></p> <p class="MsoNormal" style= 'text-autospace:none;border:none;padding:0cm'><span lang="EN-US" style='font-size:10.0pt;font-family:Consolas;color:black' xml:lang= "EN-US"> </span> <span style= 'font-size:10.0pt;font-family:Consolas;color:#3F7F5F'>//<u>Recupération</u> <u>et</u> exploitation <u>de</u> <u>la</u> <u>valeur</u> <u>de</u> <u>retour</u>(de type String)</span></p> <p class="MsoNormal" style= 'text-autospace:none;border:none;padding:0cm'><span style= 'font-size:10.0pt;font-family:Consolas;color:black'> </span> <span lang="EN-US" style= 'font-size:10.0pt;font-family:Consolas;color:black' xml:lang= "EN-US">String</span> <span lang="EN-US" style= 'font-size:10.0pt;font-family:Consolas;color:#6A3E3E' xml:lang= "EN-US">rep</span> <span lang="EN-US" style= 'font-size:10.0pt;font-family:Consolas;color:black' xml:lang= "EN-US">=</span> <span lang="EN-US" style= 'font-size:10.0pt;font-family:Consolas;color:#6A3E3E' xml:lang= "EN-US">accesWS</span><span lang="EN-US" style= 'font-size:10.0pt;font-family:Consolas;color:black' xml:lang= "EN-US">.execute().get();</span></p> </div> <p class="Standard"><span lang="EN-US" xml:lang= "EN-US"> </span></p> <p class="Standard">La réponse est ensuite placée dans la zone de texte (txtAffichage) :</p> <div style= 'border:solid windowtext 1.0pt;padding:1.0pt 1.0pt 1.0pt 1.0pt; margin-left:2.0cm;margin-right:0cm'> <p class="MsoNormal" style= 'text-autospace:none;border:none;padding:0cm'><span lang="EN-US" style='font-size:10.0pt;font-family:Consolas;color:black' xml:lang= "EN-US"> </span> <span lang="EN-US" style= 'font-size:10.0pt;font-family:Consolas;color:#0000C0' xml:lang= "EN-US">txtAffichage</span><span lang="EN-US" style= 'font-size:10.0pt;font-family:Consolas;color:black' xml:lang= "EN-US">.setText(</span><span lang="EN-US" style= 'font-size:10.0pt;font-family:Consolas;color:#6A3E3E' xml:lang= "EN-US">retourWS</span><span lang="EN-US" style= 'font-size:10.0pt;font-family:Consolas;color:black' xml:lang= "EN-US">);</span></p> </div> <p class="Standard"><span lang="EN-US" xml:lang= "EN-US"> </span></p> <p class="Standard"><b><span lang="EN-US" xml:lang="EN-US">Vous pouvez tester après avoir lancer Wamp puis GlassFish (ou payara).</span></b></p> <p class="Standard"><span lang="EN-US" xml:lang= "EN-US"> </span></p> </div>
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Générée avec
chmProcessor
Générée avec
chmProcessor