Consommer un Service Web RESTfull

j'ai testé un exemple et voila mon code Web Service:

Code:

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/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package serviceWeb;
 
import javax.ws.rs.core.Context;
import javax.ws.rs.core.UriInfo;
import javax.ws.rs.POST;
import javax.ws.rs.PathParam;
import javax.ws.rs.Consumes;
import javax.ws.rs.Path;
import javax.ws.rs.GET;
import javax.ws.rs.Produces;
import javax.ws.rs.core.Response;
import Exception.XMLUtil;
import com.dao.StatutDAO;
import com.entity.Statut;
import javax.ws.rs.QueryParam;
import org.jboss.weld.context.ejb.Ejb;
 
/**
 * REST Web Service
 *
 * @author linos
 */
@Path("/Statut")
public class StatutsResource {
 
    @Context
    private UriInfo context;
    private XMLUtil xmlUtil =new XMLUtil(); 
     @Ejb
    StatutDAO statutDAO = new StatutDAO();
 
    /**
     * Creates a new instance of StatutsResource
     */
    public StatutsResource() {
    }
 
    /**
     * Retrieves representation of an instance of serviceWeb.StatutsResource
     * @return an instance of java.lang.String
     */
    @GET
    @Produces("application/xml")
    public String getXml() throws UnsupportedOperationException{
        //TODO return proper representation object
        System.out.println("*****************************************");
        return "hello";
    }
 
    /**
     * POST method for creating an instance of StatutResource
     * @param content representation for the new resource
     * @return an HTTP response with content of the created resource
     */
 
    @POST
    @Consumes("application/xml")
    @Produces("application/xml")
 
    public Response postXml(@PathParam("content") String content) {
         System.out.println("content="+content);
        Statut statut =null;
        if ((statut=xmlUtil.getStatutFromXML(content))!=null)
        {
            statutDAO.save(statut);
        return Response.created(context.getAbsolutePath()).build();
        }
        else {return Response.noContent().build();}
    }
 
    /**
     * Sub-resource locator method for {id}
     */
    @Path("{id}")
    public StatutResource getStatutResource(@PathParam("id") String id) {
        return StatutResource.getInstance(id);
    }
}

et voila le code Client coté android

Code:

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public class MainActivity extends Activity {
    @Override
    public void onCreate(Bundle savedInstanceState){
    	 String tErrorString = "";  
 
    	 HttpURLConnection httpCon = null;  
 
         try{  
             URL url = new URL("http://10.0.2.2:8080/PFE-war/webresources/Statut");  
             httpCon = (HttpURLConnection) url.openConnection();  
             httpCon.setRequestMethod("POST"); 
             httpCon.setDoOutput(true);
             httpCon.setDoInput(true);
             httpCon.setUseCaches(false);
             httpCon.setAllowUserInteraction(false);
             httpCon.setRequestProperty("Content-Type",
                 "application/xml");
 
             OutputStream out = httpCon.getOutputStream();
             Writer writer = new OutputStreamWriter(out, "UTF-8");
             writer.write("content");
             writer.write("=");
             writer.write(URLEncoder.encode("<Statut><idPation>1</idPation><batCoeur>12.0</batCoeur><hypertension>12.0</hypertension><glucemie>12.2</glucemie><niveauAlert>12</niveauAlert><commentaire>hgjhgj</commentaire></Statut>", "UTF-8"));
             writer.close();
             out.close(); 
             httpCon.connect(); 
             super.onCreate(savedInstanceState);   
 
             TextView tv = new TextView(this);
             tv.setText(httpCon.getResponseMessage());
             setContentView(tv);  
  } catch (Exception e) {  
             tErrorString = e.getMessage();  
         }  
 
 
            }
 
 
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.activity_main, menu);
        return true;
    }
 
 
}

lorsque je lance l'umelateur l'exception suivant se déclanche coté serveur glassfish

Code:

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java.lang.NullPointerException
	at java.io.StringReader.<init>(StringReader.java:50)
	at Exception.XMLUtil.getDocument(XMLUtil.java:34)
	at Exception.XMLUtil.getStatutFromXML(XMLUtil.java:211)
	at serviceWeb.StatutsResource.postXml(StatutsResource.java:67)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:601)
	at com.sun.jersey.spi.container.JavaMethodInvokerFactory$1.invoke(JavaMethodInvokerFactory.java:60)
	at com.sun.jersey.server.impl.model.method.dispatch.AbstractResourceMethodDispatchProvider$ResponseOutInvoker._dispatch(AbstractResourceMethodDispatchProvider.java:205)
	at com.sun.jersey.server.impl.model.method.dispatch.ResourceJavaMethodDispatcher.dispatch(ResourceJavaMethodDispatcher.java:75)
	at com.sun.jersey.server.impl.uri.rules.HttpMethodRule.accept(HttpMethodRule.java:288)
	at com.sun.jersey.server.impl.uri.rules.ResourceClassRule.accept(ResourceClassRule.java:108)
	at com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147)
	at com.sun.jersey.server.impl.uri.rules.RootResourceClassesRule.accept(RootResourceClassesRule.java:84)
	at com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1469)
	at com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1400)
	at com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1349)
	at com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1339)
	at com.sun.jersey.spi.container.servlet.WebComponent.service(WebComponent.java:416)
	at com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:537)
	at com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:708)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:770)
	at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1550)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:281)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
	at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:655)
	at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:595)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:161)
	at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:331)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:231)
	at com.sun.enterprise.v3.services.impl.ContainerMapper$AdapterCallable.call(ContainerMapper.java:317)
	at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:195)
	at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:860)
	at com.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:757)
	at com.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:1056)
	at com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:229)
	at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:137)
	at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:104)
	at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:90)
	at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:79)
	at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:54)
	at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:59)
	at com.sun.grizzly.ContextTask.run(ContextTask.java:71)
	at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:532)
	at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:513)
	at java.lang.Thread.run(Thread.java:722)
 
WARNING: StandardWrapperValve[org.netbeans.rest.application.config.ApplicationConfig]: PWC1406: Servlet.service() for servlet org.netbeans.rest.application.config.ApplicationConfig threw exception
java.lang.NullPointerException
	at java.io.StringReader.<init>(StringReader.java:50)
	at Exception.XMLUtil.getDocument(XMLUtil.java:34)
	at Exception.XMLUtil.getStatutFromXML(XMLUtil.java:211)
	at serviceWeb.StatutsResource.postXml(StatutsResource.java:67)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:601)
	at com.sun.jersey.spi.container.JavaMethodInvokerFactory$1.invoke(JavaMethodInvokerFactory.java:60)
	at com.sun.jersey.server.impl.model.method.dispatch.AbstractResourceMethodDispatchProvider$ResponseOutInvoker._dispatch(AbstractResourceMethodDispatchProvider.java:205)
	at com.sun.jersey.server.impl.model.method.dispatch.ResourceJavaMethodDispatcher.dispatch(ResourceJavaMethodDispatcher.java:75)
	at com.sun.jersey.server.impl.uri.rules.HttpMethodRule.accept(HttpMethodRule.java:288)
	at com.sun.jersey.server.impl.uri.rules.ResourceClassRule.accept(ResourceClassRule.java:108)
	at com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147)
	at com.sun.jersey.server.impl.uri.rules.RootResourceClassesRule.accept(RootResourceClassesRule.java:84)
	at com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1469)
	at com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1400)
	at com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1349)
	at com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1339)
	at com.sun.jersey.spi.container.servlet.WebComponent.service(WebComponent.java:416)
	at com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:537)
	at com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:708)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:770)
	at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1550)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:281)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
	at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:655)
	at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:595)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:161)
	at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:331)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:231)
	at com.sun.enterprise.v3.services.impl.ContainerMapper$AdapterCallable.call(ContainerMapper.java:317)
	at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:195)
	at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:860)
	at com.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:757)
	at com.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:1056)
	at com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:229)
	at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:137)
	at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:104)
	at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:90)
	at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:79)
	at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:54)
	at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:59)
	at com.sun.grizzly.ContextTask.run(ContextTask.java:71)
	at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:532)
	at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:513)
	at java.lang.Thread.run(Thread.java:722)

j'ai conclu que le probléme c'est au niveau le pathParam("content") il me retourne toujours null