Lancement d'un client REST avec l'invite de commande

Version imprimable

15/03/2018, 13h04
emmyhad

Lancement d'un client REST avec l'invite de commande

Bonjour à tous,

Comment lancer un client java REST avec le console?
merci d'avance :)
15/03/2018, 15h43
yildiz-online

un client rest c'est juste un appel HTTP, un curl fera donc l'affaire sous linux (et sous windows 10 à partir de la prochaine mise à jour)

https://curl.haxx.se/docs/manpage.html

j'ai tapé ça: javac ClientJava.java
il m'affiche ces erreurs:

Code:

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ClientJava.java:5: error: package javax.ws.rs does not exist
import javax.ws.rs.Path;
                  ^
ClientJava.java:6: error: package javax.ws.rs.client does not exist
import javax.ws.rs.client.Client;
                         ^
ClientJava.java:7: error: package javax.ws.rs.client does not exist
import javax.ws.rs.client.ClientBuilder;
                         ^
ClientJava.java:8: error: package javax.ws.rs.client does not exist
import javax.ws.rs.client.WebTarget;
                         ^
ClientJava.java:9: error: package javax.ws.rs.core does not exist
import javax.ws.rs.core.MediaType;
                       ^
ClientJava.java:10: error: package javax.ws.rs.core does not exist
import javax.ws.rs.core.Response;
                       ^
ClientJava.java:11: error: package javax.ws.rs.core does not exist
import javax.ws.rs.core.UriBuilder;
                       ^
ClientJava.java:13: error: package org.glassfish.jersey.client does not exist
import org.glassfish.jersey.client.ClientConfig;
                                  ^
ClientJava.java:16: error: cannot find symbol
        ClientConfig config = new ClientConfig();
        ^
  symbol:   class ClientConfig
  location: class ClientJava
ClientJava.java:16: error: cannot find symbol
        ClientConfig config = new ClientConfig();
                                  ^
  symbol:   class ClientConfig
  location: class ClientJava
ClientJava.java:18: error: cannot find symbol
        Client client = ClientBuilder.newClient(config);//Creating an Instance of a Client
        ^
  symbol:   class Client
  location: class ClientJava
ClientJava.java:18: error: cannot find symbol
        Client client = ClientBuilder.newClient(config);//Creating an Instance of a Client
                        ^
  symbol:   variable ClientBuilder
  location: class ClientJava
ClientJava.java:20: error: cannot find symbol
        WebTarget target = client.target(getBaseURI());// Creating a WebTarget using the URI of the targeted web resource:
        ^
  symbol:   class WebTarget
  location: class ClientJava
ClientJava.java:22: error: cannot find symbol
        String response = target.path("aleatoire").path("oper1").request().accept(MediaType.TEXT_PLAIN).get(String.class);
                                                                                  ^
  symbol:   variable MediaType
  location: class ClientJava
ClientJava.java:25: error: cannot find symbol
        String response2 = target.path("aleatoire").path("oper2").request().accept(MediaType.TEXT_PLAIN).get(String.class);
                                                                                   ^
  symbol:   variable MediaType
  location: class ClientJava
ClientJava.java:31: error: cannot find symbol
                return UriBuilder.fromUri("http://localhost:8081/WSalea").build();// nouvelle instance Ó partir d'une uri
                       ^
  symbol:   variable UriBuilder
  location: class ClientJava
16 errors

donc comment importer les bibliothèques jersey(sous windows)

16/03/2018, 13h18
yildiz-online

ok ce n'est pas lancer mais compiler

-cp pour ajouter un jar au classpath

j'ai importer tous les fichiers jar avec:
javac -classpath javax.servlet-api-3.0.1.jar;javax.ws.rs-api-2.1.jar;jaxb-api-2.2.7.jar;jboss-interceptors-api_1.1_spec-1.0.0.Beta1.jar;jersey-client.jar;jersey-common.jar;jersey-container-servlet.jar;jersey-container-servlet-core.jar;jersey-hk2.jar;jersey-media-jaxb.jar;jersey-media-json-binding.jar;jersey-media-sse.jar;jersey-server.jar;jsr250-api-1.0.jar;org.osgi.core-4.2.0.jar;osgi-resource-locator-1.0.1.jar;persistence-api-1.0.jar;validation-api-1.1.0.Final.jar;yasson-1.0.jar;aopalliance-repackaged-2.5.0-b42.jar;cdi-api-1.1.jar;el-api-2.2.jar;hk2-api-2.5.0-b42.jar;hk2-locator-2.5.0-b42.jar;hk2-utils-2.5.0-b42.jar;javassist-3.22.0-CR2.jar;javax.annotation-api-1.2.jar;javax.inject-1.jar;javax.inject-2.5.0-b42.jar;javax.json.bind-api-1.0.jar;javax.json-1.1.jar;javax.json-api-1.1.jar ..\..\..\src\clientUC\ClientJava.java

mais il affiche:
Code:

1 2 3 4 5 6 7 8 warning: javax.ws.rs-api-2.1.jar(javax/ws/rs/Path.class): major version 52 is newer than 51, the highest major version supported by this compiler. It is recommended that the compiler be upgraded. warning: javax.ws.rs-api-2.1.jar(javax/ws/rs/client/Client.class): major version 52 is newer than 51, the highest major version supported by this compiler. It is recommended that the compiler be upgraded. warning: javax.ws.rs-api-2.1.jar(javax/ws/rs/client/ClientBuilder.class): major version 52 is newer than 51, the highest major version supported by this compiler. It is recommended that the compiler be upgraded. warning: javax.ws.rs-api-2.1.jar(javax/ws/rs/client/WebTarget.class): major version 52 is newer than 51, the highest major version supported by this compiler. It is recommended that the compiler be upg.

16/03/2018, 14h47
yildiz-online

les librairies sont apparemment compilées en java 8 et toi tu utilises java 7

Error: A JNI error has occurred, please check your installation and try again

j'ai changé la version java et tous va bien avec
j

Code:

avac -classpath javax.servlet-api-3.0.1.jar;javax.ws.rs-api-2.1.jar;jaxb-api-2.2.7.jar;jboss-interceptors-api_1.1_spec-1.0.0.Beta1.jar;jersey-client.jar;jersey-common.jar;jersey-container-servlet.jar;jersey-container-servlet-core.jar;jersey-hk2.jar;jersey-media-jaxb.jar;jersey-media-json-binding.jar;jersey-media-sse.jar;jersey-server.jar;jsr250-api-1.0.jar;org.osgi.core-4.2.0.jar;osgi-resource-locator-1.0.1.jar;persistence-api-1.0.jar;validation-api-1.1.0.Final.jar;yasson-1.0.jar;aopalliance-repackaged-2.5.0-b42.jar;cdi-api-1.1.jar;el-api-2.2.jar;hk2-api-2.5.0-b42.jar;hk2-locator-2.5.0-b42.jar;hk2-utils-2.5.0-b42.jar;javassist-3.22.0-CR2.jar;javax.annotation-api-1.2.jar;javax.inject-1.jar;javax.inject-2.5.0-b42.jar;javax.json.bind-api-1.0.jar;javax.json-1.1.jar;javax.json-api-1.1.jar ..\..\..\src\ClientJava.java

mais aprés j'ai tapé: >java ClientJava
il m'affiche:
Code:

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Error: A JNI error has occurred, please check your installation and try again Exception in thread "main" java.lang.NoClassDefFoundError: javax/ws/rs/core/Configuration at java.lang.Class.getDeclaredMethods0(Native Method) at java.lang.Class.privateGetDeclaredMethods(Unknown Source) at java.lang.Class.privateGetMethodRecursive(Unknown Source) at java.lang.Class.getMethod0(Unknown Source) at java.lang.Class.getMethod(Unknown Source) at sun.launcher.LauncherHelper.validateMainClass(Unknown Source) at sun.launcher.LauncherHelper.checkAndLoadMain(Unknown Source) Caused by: java.lang.ClassNotFoundException: javax.ws.rs.core.Configuration at java.net.URLClassLoader.findClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) ... 7 more

27/03/2018, 14h08
yildiz-online

tu as pris java 8 ou 9?
27/03/2018, 16h46
emmyhad

java 8
27/03/2018, 17h09
yildiz-online

Pour lancer ton application tu dois aussi spécifier le classpath, quand tu as compilé, il n'a pas ajouté les libraries dans ton jar, javac les as simplement utilisées pour valider la compilation.

Il faut donc à nouveau les appeler lors du lancement de l'application.

il m'affiche
Erreur : impossible de trouver ou charger la classe principale
et je suis sure que la classe existe dans le chemin

Code:

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>java -classpath javax.servlet-api-3.0.1.jar;javax.ws.rs-api-2.1.jar;jaxb-api-2.2.7.jar;jboss-interceptors-api_1.1_spec-1.0.0.Beta1.jar;jersey-client.jar;jersey-common.jar;jersey-container-servlet.jar;jersey-container-servlet-core.jar;jersey-hk2.jar;jersey-media-jaxb.jar;jersey-media-json-binding.jar;jersey-media-sse.jar;jersey-server.jar;jsr250-api-1.0.jar;org.osgi.core-4.2.0.jar;osgi-resource-locator-1.0.1.jar;persistence-api-1.0.jar;validation-api-1.1.0.Final.jar;yasson-1.0.jar;aopalliance-repackaged-2.5.0-b42.jar;cdi-api-1.1.jar;el-api-2.2.jar;hk2-api-2.5.0-b42.jar;hk2-locator-2.5.0-b42.jar;hk2-utils-2.5.0-b42.jar;javassist-3.22.0-CR2.jar;javax.annotation-api-1.2.jar;javax.inject-1.jar;javax.inject-2.5.0-b42.jar;javax.json.bind-api-1.0.jar;javax.json-1.1.jar;javax.json-api-1.1.jar ..\..\..\src\ClientJava
Erreur : impossible de trouver ou charger la classe principale ..\..\..\src\ClientJava

27/03/2018, 18h46
yildiz-online

Il y a bien une fonction main dans ClientJava ?

oui, c'est le code:

Code:

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import java.net.URI;
 
import javax.ws.rs.Path;
import javax.ws.rs.client.Client;
import javax.ws.rs.client.ClientBuilder;
import javax.ws.rs.client.WebTarget;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;
import javax.ws.rs.core.UriBuilder;
 
import org.glassfish.jersey.client.ClientConfig;
public class ClientJava{
	public static void main(String[] args) {
        ClientConfig config = new ClientConfig();
 
        Client client = ClientBuilder.newClient(config);//Creating an Instance of a Client
 
        WebTarget target = client.target(getBaseURI());// Creating a WebTarget using the URI of the targeted web resource:
 
        String response = target.path("aleatoire").path("oper1").request().accept(MediaType.TEXT_PLAIN).get(String.class);
 
        System.out.println(response);
        String response2 = target.path("aleatoire").path("oper2").request().accept(MediaType.TEXT_PLAIN).get(String.class);
 
        System.out.println(response2);
 
    }
	 private static URI getBaseURI() {//chemin de l'application
	        return UriBuilder.fromUri("http://localhost:8082/WSalea").build();
}

27/03/2018, 21h22
yildiz-online

alors c'est peut-être bien le chemin relatif ../src/Client qui ne passe pas