JAX WS RS en utilisant Jersey - retour collection, carte etc

Je suis en utilisant Jersey 2.3

Mon WS point de terminaison de la classe :

@Path("/employees")
public class EmployeeWSEndpoint {

    @Context
    Request request;

    @GET
    @Path("/allEmployees")
    @Produces(MediaType.APPLICATION_JSON)
    public List<Employee> getAllEmployees() {

        System.out.println("In EmployeeWSEndpoint.getAllEmployees()");

        EmployeeService employeeService = new EmployeeServiceImpl();
        return employeeService.getAllEmployees();
    }

    @GET
    @Path("/allDept")
    @Produces(MediaType.APPLICATION_JSON)
    public List<String> getAllDept() {

        System.out.println("In EmployeeWSEndpoint.getAllDept()");

        List<String> deptNames = new ArrayList<>();
        deptNames.add("CoE");
        deptNames.add("iLabs");

        return deptNames;
    }

    @GET
    @Path("/allDeptPOJO")
    @Produces(MediaType.APPLICATION_JSON)
    public TempPOJO getAllDeptPOJO() {

        System.out.println("In EmployeeWSEndpoint.getAllDeptPOJO");

        TempPOJO tempPOJO = new TempPOJO();

        return tempPOJO;
    }
}

Employé POJO :

public class Employee {

    private int id;
    private String firstName;
    private String middleName;
    private String lastName;
    private Date dob;
    private int deptId;

    public Employee() {

    }

    public Employee(String firstName, String middleName, String lastName,
            Date dob, int deptId) {
        this.firstName = firstName;
        this.middleName = middleName;
        this.lastName = lastName;
        this.dob = dob;
        this.deptId = deptId;
    }

    public Employee(int id, String firstName, String middleName,
            String lastName, Date dob, int deptId) {
        this.id = id;
        this.firstName = firstName;
        this.middleName = middleName;
        this.lastName = lastName;
        this.dob = dob;
        this.deptId = deptId;
    }

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getFirstName() {
        return firstName;
    }

    public void setFirstName(String firstName) {
        this.firstName = firstName;
    }

    public String getMiddleName() {
        return middleName;
    }

    public void setMiddleName(String middleName) {
        this.middleName = middleName;
    }

    public String getLastName() {
        return lastName;
    }

    public void setLastName(String lastName) {
        this.lastName = lastName;
    }

    public Date getDob() {
        return dob;
    }

    public void setDob(Date dob) {
        this.dob = dob;
    }

    public int getDeptId() {
        return deptId;
    }

    public void setDeptId(int deptId) {
        this.deptId = deptId;
    }

    @Override
    public String toString() {
        return firstName + " " + middleName + " " + " " + lastName;
    }
}

Temporaire POJO :

public class TempPOJO {

    private List<String> deptNames;

    public List<String> getDeptNames() {

        deptNames = new ArrayList<>();
        deptNames.add("CoE");
        deptNames.add("iLabs");

        return deptNames;
    }

    public void setDeptNames(List<String> deptNames) {
        this.deptNames = deptNames;
    }

}

Liste les sortie(s) pour les différentes méthodes :

allEmployees

[{"deptId":1,"dob":"1978-06-19","firstName":"Garfield","id":0,"lastName":"Arbuckle","middleName":"John"},{"deptId":1,"dob":"1946-07-07","firstName":"John","id":0,"lastName":"Rambo","middleName":"R"}]

/allDept

In EmployeeWSEndpoint.getAllDept()
Oct 01, 2013 3:31:08 PM org.glassfish.jersey.server.ServerRuntime$Responder mapException
WARNING: WebApplicationException cause:
javax.xml.bind.MarshalException
 - with linked exception:
[Exception [EclipseLink-25003] (Eclipse Persistence Services - 2.5.0.v20130507-3faac2b): org.eclipse.persistence.exceptions.XMLMarshalException
Exception Description: An error occurred marshalling the object
Internal Exception: Exception [EclipseLink-25007] (Eclipse Persistence Services - 2.5.0.v20130507-3faac2b): org.eclipse.persistence.exceptions.XMLMarshalException
Exception Description: A descriptor for class java.lang.String was not found in the project.  For JAXB, if the JAXBContext was bootstrapped using TypeMappingInfo[] you must call a marshal method that accepts TypeMappingInfo as an input parameter.]
    at org.eclipse.persistence.jaxb.JAXBMarshaller.marshal(JAXBMarshaller.java:403)
    at org.eclipse.persistence.jaxb.rs.MOXyJsonProvider.writeTo(MOXyJsonProvider.java:808)
    at org.glassfish.jersey.message.internal.WriterInterceptorExecutor$TerminalWriterInterceptor.invokeWriteTo(WriterInterceptorExecutor.java:243)
    at org.glassfish.jersey.message.internal.WriterInterceptorExecutor$TerminalWriterInterceptor.aroundWriteTo(WriterInterceptorExecutor.java:230)
    at org.glassfish.jersey.message.internal.WriterInterceptorExecutor.proceed(WriterInterceptorExecutor.java:149)
    at org.glassfish.jersey.server.internal.JsonWithPaddingInterceptor.aroundWriteTo(JsonWithPaddingInterceptor.java:103)
    at org.glassfish.jersey.message.internal.WriterInterceptorExecutor.proceed(WriterInterceptorExecutor.java:149)
    at org.glassfish.jersey.server.internal.MappableExceptionWrapperInterceptor.aroundWriteTo(MappableExceptionWrapperInterceptor.java:88)
    at org.glassfish.jersey.message.internal.WriterInterceptorExecutor.proceed(WriterInterceptorExecutor.java:149)
    at org.glassfish.jersey.message.internal.MessageBodyFactory.writeTo(MessageBodyFactory.java:1139)
    at org.glassfish.jersey.server.ServerRuntime$Responder.writeResponse(ServerRuntime.java:562)
    at org.glassfish.jersey.server.ServerRuntime$Responder.processResponse(ServerRuntime.java:357)
    at org.glassfish.jersey.server.ServerRuntime$Responder.process(ServerRuntime.java:347)
    at org.glassfish.jersey.server.ServerRuntime$1.run(ServerRuntime.java:258)
    at org.glassfish.jersey.internal.Errors$1.call(Errors.java:271)
    at org.glassfish.jersey.internal.Errors$1.call(Errors.java:267)
    at org.glassfish.jersey.internal.Errors.process(Errors.java:315)
    at org.glassfish.jersey.internal.Errors.process(Errors.java:297)
    at org.glassfish.jersey.internal.Errors.process(Errors.java:267)
    at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:318)
    at org.glassfish.jersey.server.ServerRuntime.process(ServerRuntime.java:235)
    at org.glassfish.jersey.server.ApplicationHandler.handle(ApplicationHandler.java:983)
    at org.glassfish.jersey.servlet.WebComponent.service(WebComponent.java:359)
    at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:372)
    at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:335)
    at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:218)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
    at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:947)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
    at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1009)
    at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
    at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
    at java.lang.Thread.run(Unknown Source)
Caused by: Exception [EclipseLink-25003] (Eclipse Persistence Services - 2.5.0.v20130507-3faac2b): org.eclipse.persistence.exceptions.XMLMarshalException
Exception Description: An error occurred marshalling the object
Internal Exception: Exception [EclipseLink-25007] (Eclipse Persistence Services - 2.5.0.v20130507-3faac2b): org.eclipse.persistence.exceptions.XMLMarshalException
Exception Description: A descriptor for class java.lang.String was not found in the project.  For JAXB, if the JAXBContext was bootstrapped using TypeMappingInfo[] you must call a marshal method that accepts TypeMappingInfo as an input parameter.
    at org.eclipse.persistence.exceptions.XMLMarshalException.marshalException(XMLMarshalException.java:97)
    at org.eclipse.persistence.internal.oxm.XMLMarshaller.marshal(XMLMarshaller.java:911)
    at org.eclipse.persistence.internal.oxm.XMLMarshaller.marshal(XMLMarshaller.java:848)
    at org.eclipse.persistence.jaxb.JAXBMarshaller.marshal(JAXBMarshaller.java:401)
    ... 41 more
Caused by: Exception [EclipseLink-25007] (Eclipse Persistence Services - 2.5.0.v20130507-3faac2b): org.eclipse.persistence.exceptions.XMLMarshalException
Exception Description: A descriptor for class java.lang.String was not found in the project.  For JAXB, if the JAXBContext was bootstrapped using TypeMappingInfo[] you must call a marshal method that accepts TypeMappingInfo as an input parameter.
    at org.eclipse.persistence.exceptions.XMLMarshalException.descriptorNotFoundInProject(XMLMarshalException.java:139)
    at org.eclipse.persistence.internal.oxm.Context$ContextState.getSession(Context.java:143)
    at org.eclipse.persistence.oxm.XMLContext$XMLContextState.getSession(XMLContext.java:787)
    at org.eclipse.persistence.oxm.XMLContext$XMLContextState.getSession(XMLContext.java:1)
    at org.eclipse.persistence.internal.oxm.Context.getSession(Context.java:451)
    at org.eclipse.persistence.oxm.XMLContext.getSession(XMLContext.java:356)
    at org.eclipse.persistence.oxm.XMLContext.getSession(XMLContext.java:1)
    at org.eclipse.persistence.internal.oxm.XMLMarshaller.marshal(XMLMarshaller.java:568)
    at org.eclipse.persistence.internal.oxm.XMLMarshaller.marshal(XMLMarshaller.java:1096)
    at org.eclipse.persistence.internal.oxm.XMLMarshaller.marshal(XMLMarshaller.java:869)
    ... 43 more

/allDeptPOJO

{"deptNames":["CoE","iLabs"]}

J'ai quelques requêtes :

Je suppose que depuis Jersey 2.3, annotation 'XmlRootElement" n'est pas nécessaire pour Pojo - je ne l'ai pas fait, pourtant, les appels de travail. S'il vous plaît confirmer
Dans le cas d'une Liste d'un pojo(Employé) ou d'un pojo avoir une Liste, la réponse est bonne mais pour la Liste, Carte, etc. il échoue(en gros, pour les types Java) - pourquoi est-ce donc? Si cela fonctionne pour les Employés, pourquoi ne pas travailler pour les types Java? Est-il nécessaire d'écrire un XmlAdapter?

Note : je veux la réponse en JSON dans la plupart des cas.

La modification de la web.xml pour utiliser Jackson :

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns="http://java.sun.com/xml/ns/javaee"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
    id="WebApp_ID" version="3.0">
    <display-name>Jersey</display-name>
    <welcome-file-list>
        <welcome-file>index.html</welcome-file>
        <welcome-file>index.htm</welcome-file>
        <welcome-file>index.jsp</welcome-file>
        <welcome-file>default.html</welcome-file>
        <welcome-file>default.htm</welcome-file>
        <welcome-file>default.jsp</welcome-file>
    </welcome-file-list>

    <servlet>
        <servlet-name>Jersey REST Service</servlet-name>
        <servlet-class>org.glassfish.jersey.servlet.ServletContainer</servlet-class>
        <init-param>
            <param-name>jersey.config.server.provider.packages</param-name>
            <param-value>com.ws.jaxrs.jersey</param-value>
        </init-param>
        <init-param>
            <param-name>jersey.config.disableMoxyJson.server</param-name>
            <param-value>true</param-value>
        </init-param>

        <init-param>
            <param-name>jersey.config.server.provider.packages</param-name>
            <param-value>com.ws.jaxrs.jersey;org.codehaus.jackson.jaxrs</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>

    <servlet-mapping>
        <servlet-name>Jersey REST Service</servlet-name>
        <url-pattern>/rest/*</url-pattern>
    </servlet-mapping>


</web-app>

Je suis l'exception suivante :

In EmployeeWSEndpoint.getAllDept()
Nov 07, 2013 10:04:12 AM org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Servlet.service() for servlet [Jersey REST Service] in context with path [/Jersey] threw exception [org.glassfish.jersey.message.internal.MessageBodyProviderNotFoundException: MessageBodyWriter not found for media type=application/json, type=class java.util.ArrayList, genericType=java.util.List<java.lang.String>.] with root cause
org.glassfish.jersey.message.internal.MessageBodyProviderNotFoundException: MessageBodyWriter not found for media type=application/json, type=class java.util.ArrayList, genericType=java.util.List<java.lang.String>.
    at org.glassfish.jersey.message.internal.WriterInterceptorExecutor$TerminalWriterInterceptor.aroundWriteTo(WriterInterceptorExecutor.java:227)
    at org.glassfish.jersey.message.internal.WriterInterceptorExecutor.proceed(WriterInterceptorExecutor.java:149)
    at org.glassfish.jersey.server.internal.JsonWithPaddingInterceptor.aroundWriteTo(JsonWithPaddingInterceptor.java:103)
    at org.glassfish.jersey.message.internal.WriterInterceptorExecutor.proceed(WriterInterceptorExecutor.java:149)
    at org.glassfish.jersey.server.internal.MappableExceptionWrapperInterceptor.aroundWriteTo(MappableExceptionWrapperInterceptor.java:88)
    at org.glassfish.jersey.message.internal.WriterInterceptorExecutor.proceed(WriterInterceptorExecutor.java:149)
    at org.glassfish.jersey.message.internal.MessageBodyFactory.writeTo(MessageBodyFactory.java:1139)
    at org.glassfish.jersey.server.ServerRuntime$Responder.writeResponse(ServerRuntime.java:562)
    at org.glassfish.jersey.server.ServerRuntime$Responder.processResponse(ServerRuntime.java:357)
    at org.glassfish.jersey.server.ServerRuntime$Responder.process(ServerRuntime.java:347)
    at org.glassfish.jersey.server.ServerRuntime$1.run(ServerRuntime.java:258)
    at org.glassfish.jersey.internal.Errors$1.call(Errors.java:271)
    at org.glassfish.jersey.internal.Errors$1.call(Errors.java:267)
    at org.glassfish.jersey.internal.Errors.process(Errors.java:315)
    at org.glassfish.jersey.internal.Errors.process(Errors.java:297)
    at org.glassfish.jersey.internal.Errors.process(Errors.java:267)
    at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:318)
    at org.glassfish.jersey.server.ServerRuntime.process(ServerRuntime.java:235)
    at org.glassfish.jersey.server.ApplicationHandler.handle(ApplicationHandler.java:983)
    at org.glassfish.jersey.servlet.WebComponent.service(WebComponent.java:359)
    at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:372)
    at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:335)
    at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:218)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:304)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:224)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:169)
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100)
    at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:929)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:405)
    at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:964)
    at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:515)
    at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:302)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
    at java.lang.Thread.run(Unknown Source)

source d'informationauteur Kaliyug Antagonist | 2013-10-01

Jackson est la meilleure solution pour moi en ce moment.

À utiliser Jackson en tant que votre JSON fournisseur, vous devez ajouter jersey-media-json-jackson module à votre pom.xml fichier:

<dependency>
    <groupId>org.glassfish.jersey.media</groupId>
    <artifactId>jersey-media-json-jackson</artifactId>
    <version>2.7</version>
</dependency>

Remarque: fonctionnalité de détection Automatique ne fonctionne pas.

Client de bâtiment avec Jackson JSON fonction activée:

final Client client = ClientBuilder.newBuilder()
                    .register(JacksonFeature.class)
                    .build();

La création de JAX-RS serveur d'application Jackson JSON fonction activée:

final Application application = new ResourceConfig()
                              .packages("my.rest.package")
                              .register(JacksonFeature.class);

Également vérifier officiel Maillot json-jackson exemple.

7

Utiliser un autre JSON fournisseur de

Je ne sais pas pourquoi jersey commence à adopter MOXy par défaut JSON fournisseur, mais c'est évidemment une mauvaise idée.

Les problèmes que vous (et moi (et d'autres) sont confrontés sont le résultat de MOXy beeing incapable de carte collections de Java simple types (comme String) - c'est tout simplement ridicule à mon humble avis. D'autres fournisseurs (par exemple jackson) n'ont pas ce problème, afin de changer définitivement.

Voici ce que j'ai fait:
1. Dire Jersey pas à utiliser MOXy. Ajoutez ceci à votre web.xml:
```
<init-param>
    <param-name>jersey.config.disableMoxyJson.server</param-name>
    <param-value>true</param-value>
</init-param>
```
2. Ajouter Jackson à votre pom. Quelque chose comme cela va faire:
```
<dependency>
    <groupId>org.codehaus.jackson</groupId>
    <artifactId>jackson-jaxrs</artifactId>
    <version>1.9.12</version>
</dependency>
```
3. Dire jersey pour analyser la jackson jackson paquets. Il va trouver (et d'utiliser) le json fournisseurs fournis par jackson:
```
<init-param>
    <param-name>jersey.config.server.provider.packages</param-name>
    <param-value>com.example.your.package;org.codehaus.jackson.jaxrs</param-value>
</init-param>
```
6

Remarque: je suis le EclipseLink JAXB (MOXy) plomb et un membre de la JAXB (JSR-222) groupe d'experts.

L'exception que vous visez est dû à un bogue dans MOXy est MOXyJsonProvider. MOXyJsonProvider est une implémentation de JAX-RS interfaces MessageBodyReader/MessageBodyWriter. J'ai changé le isWriteable méthode renvoie false pour List<String> de fausse déclaration, de sorte qu'un autre fournisseur peut le manipuler.

J'ai également ouvert à la suite de demande d'amélioration pour avoir cette prise en charge ajoutée pour MOXy:
- http://bugs.eclipse.org/417725

Vous pouvez utiliser RestEasy comme JAX-RS de la mise en œuvre

GlassFish4 utilise Jersey/MOXy que la mise en œuvre de JAX-RS.
Ils ont des problèmes avec la cartographie des collections de Java simple types (type String) en JSON - https://bugs.eclipse.org/bugs/show_bug.cgi?id=417723

WildFly et JBoss utilisation RestEasy/Jackson comme la mise en œuvre de JAX-RS et il n'y a pas de problème avec la cartographie.

Vous pouvez utiliser RestEasy au lieu de Jersey en tout serveur d'applications java, par exemple, WildFly (JBoss), GlassFish ou Tomcat,

il suffit de remplacer:

    <dependency>
        <groupId>javax</groupId>
        <artifactId>javaee-api</artifactId>
        <version>7.0</version>
        <scope>provided</scope>
    </dependency>

avec:

    <dependency>
        <groupId>org.jboss.resteasy</groupId>
        <artifactId>resteasy-servlet-initializer</artifactId>
        <version>3.0.7.Final</version>
        <scope>compile</scope>
    </dependency>        
    <dependency>
       <groupId>org.jboss.resteasy</groupId>
       <artifactId>resteasy-jaxrs</artifactId>
       <version>3.0.7.Final</version>
        <scope>compile</scope>
    </dependency>
    <dependency>
        <groupId>org.jboss.resteasy</groupId>
        <artifactId>resteasy-jackson-provider</artifactId>
        <version>3.0.7.Final</version>
        <scope>compile</scope>
    </dependency>
    <dependency>
        <groupId>org.jboss.resteasy</groupId>
        <artifactId>resteasy-jaxb-provider</artifactId>
        <version>3.0.7.Final</version>
        <scope>compile</scope>
    </dependency>

C'est de travailler pour moi.

Meilleures salutations de Lublin en Pologne 🙂

J'ai eu le même problème retour d'une List<String> objet. Je l'ai enveloppé dans un RestStringList classe et qui fonctionne. Si nous avons plus de ces à faire, je peut passer de l'une à Jackson.

import java.io.Serializable;
import java.util.ArrayList;
import java.util.List;

public class RestStringList implements Serializable {
    private static final long serialVersionUID = 1L;

    private List<String> stringList = null;

    public RestStringList() {
        this.stringList = new ArrayList<String>();
    }

    public void setStringList(List<String> stringList) {
        this.stringList = new ArrayList<String>(stringList);
    }

    public List<String> getStringList() {
        return stringList;
    }

    public String toString() {
        return "{ strings=" + stringList + " }";
    }
}

Vous devez vous connecter pour publier un commentaire.

Client de bâtiment avec Jackson JSON fonction activée:

La création de JAX-RS serveur d'application Jackson JSON fonction activée:

Utiliser un autre JSON fournisseur de